14 files changed, 3334 insertions, 0 deletions
diff --git a/sci-chemistry/gromacs/Manifest b/sci-chemistry/gromacs/Manifest
new file mode 100644
index 000000000000..9a2f81836bc6
--- /dev/null
+++ b/sci-chemistry/gromacs/Manifest
@@ -0,0 +1,29 @@
+DIST gromacs-2016.1.tar.gz 27336258 SHA256 9e7d2892a903777b982bc9ab4306de969d92cb45b51a562f523ec5fe58db41e3 SHA512 d30a4ad5faa6e12c95b8e94acaabc387d9aab3780490f5442c48ccac2f86bef6dca60df5bb6097dbc68ab28e6f1a15e234e1244606afdf12a841b88ece65c97b WHIRLPOOL 4be9c84d99286889dda23d9f1e2dd7b2d87a70740fb686bd58e59155771e897471d0920b02c5ec529a01a4b01428ebb2ca5b27e4d8df9034d2d3b33c5ab1a1ca
+DIST gromacs-2016.2.tar.gz 27339623 SHA256 b6ac3632b848ab0c19f8f319dd5b58fcd09b8e2005ee7509478606613e5409a5 SHA512 f5e74bb8c126823c90d205ac0f0835e61fdd13a4550bc15aa9c972ee9b187f6451cdc90877c17276d2f889d61abb5eaa5ea1b54f7cbf3da67074146c749c1aa6 WHIRLPOOL 698c4d4e67266483be4f1047eb947b243b5c8caa3c5e30bdab6b5f0dd302bb51ac5aa6e3a3357beab567cf71c1b8ecc1f9684a89754d18f963dd6f5fc90a33f4
+DIST gromacs-2016.3.tar.gz 27342692 SHA256 7bf00e74a9d38b7cef9356141d20e4ba9387289cbbfd4d11be479ef932d77d27 SHA512 16593df0a52620766fb86cfeb16328793503f860cb07cdbbd503ba7f41e6430efb4848389b7179ca3907b57311162666d05224b454e1afb1b74b220f38498d86 WHIRLPOOL dfe31f212545ae2baf7373fde31f715a8df203d098d3ace915d4269b7bf16d06a1f91ead33ccbf8a17e9e0091b593818d0ce2eff151ce532238a8c27f5e20cda
+DIST gromacs-2016.4.tar.gz 27368706 SHA256 4be9d3bfda0bdf3b5c53041e0b8344f7d22b75128759d9bfa9442fe65c289264 SHA512 69661d2a7a8a5259be277de35e2baa4b688d1f7bef225fc7d733a9b00c6ee135dcbad517c7c9f751121647c2fbd085f2c9cdf22dbd941c7ebc5d3b09e7e08f1f WHIRLPOOL c1586377d2a27f0b529370efb63e09ecca64cdb3d418fe9bc4f3ea1ff82ff5293d159834f4ed5d0136d801095d6f4085722e0d91bce873776fa4549853497ff7
+DIST gromacs-2016.tar.gz 27321561 SHA256 aa0a27cd13050a4b70aacfbd169ddce2fe507c7e668f460ecf6cf32afcac5771 SHA512 756771baaa85a1d16e7d5b8e4c96bbd1c04c7acdc536a253886cff186316330f06d60d206a0159efb15f47f161c779d3757dc5dbceab8c097241c1382d376201 WHIRLPOOL 1cc3d3797e1aaf93e1e0cb2e71173896e33fee2bb03f4e97e06be3ab85842e6da3feaf8701425358f1d701e00159ff6ce3b24fa1488d5e8ef70a1acbb914361c
+DIST gromacs-5.0.4.tar.gz 26342095 SHA256 78068eeccc0b950018ddb45c41280e53c8bedae4639dca48e17c940f8896b23b SHA512 bc62b623bf71dcaa948aaf7563a3d3afa973da0702062848a20323db202e862dcee413197dacd1472866ccb40fce7709e283177b1c6c49514064f23e6c46b5ee WHIRLPOOL d8458d3d563e015e830622ae0c924e896765a6329ffe4cb1a31c7aef3c804f392d29e3f1db5617051e85058403422f7d69a160a6c7cc810564696d88f9d50bd4
+DIST gromacs-5.1.3.tar.gz 27095702 SHA256 c962d9446939a9ba9905e7ca440c9306fd310f08600da3b744806bfd0eacccde SHA512 9ab26e1b2268f8d567b89b2d99d0b75b937b28edceaec56d17ca3243c76faa31255ffc0c45d762c7c693fe500b00e36ad43b80572d1d7f92dc87f9d2d98c0ba6 WHIRLPOOL bdd9c63ceb5e61963c4edd0af815cc34a3f237d8dee410c834b9b55bb82374de65b437828390a668282e50428b9907b887cd5265caf2a2007fc7673e7ab23733
+DIST regressiontests-2016.1.tar.gz 67094518 SHA256 10c9f50ff3cb32cf629aa35e35d957965dcfce4af84a6569e6d65a16c4e09eb7 SHA512 fc01c802d81400373a147171881f3b7b9309402e8ffb08287ba393aefbb701ba93bbe0b9549ff6fa264a8befbba445c2d2c7450633063a724f78ec8ca81ae8c9 WHIRLPOOL e8c54164558fcbaa1e65e9280e438882c96bbbaa6c9389a2ee5aed37d70b83b6b36e95dd5141b4e64b303e3799411ee01cf04aa919f25014d172011e49714126
+DIST regressiontests-2016.2.tar.gz 67095329 SHA256 53fa9ad062cc3e269fc6186db1ccbb64a93d36c2fa1cafd6433564ba2583c112 SHA512 e0aceb56d1f38a7e6ab9fdaac5063fd20c5b3a162ffb6eddd0e6dc7dff9b724bfe31363493a9437e9f9d5421a534b375960fcb31e903a4901a0fa94ed8511294 WHIRLPOOL 408741abf781ecf880f8f1337590ed81196cabcf25a49d2cd97bbe0596c8495ea866d6aa64a944c6ee0eb209110883dff204f0f52f6aa6e6dd52f50bcbbade66
+DIST regressiontests-2016.3.tar.gz 67093968 SHA256 a3d1b09acfc61820dddd765a381f706190b4657606488f1e676becb859ea7ecc SHA512 ee87df9f339954da0e1f1b4c8b8d4deb574f3b73d174010a295a7a0e8bc462ead7691090ea7cf8ac3d984a6cd70f1cd22c3592fa161b2967061ae5ba2796286b WHIRLPOOL 2e986136f7faf6db108bc79e6fb6db9fe81d05f5af8bc27037b80cd25869f7cd4162d5cabc03994b36c71945910be79a217ff27f61463d1548cbdff6acd99f56
+DIST regressiontests-2016.4.tar.gz 67643648 SHA256 d58d1a2a53c22c06e2dc03bd98ae1eea0a0d51696a1f20f635dfc394fa3da957 SHA512 367438b897a05e1cc0dcd1d3872fb6a0e9ff6b1146e9448d941d6517dce789f0c478d20cf0a4f3565070f132dc88872441aadb8b499f59efa0e1e4a6dd6a7135 WHIRLPOOL 695a3b7f81915247a90e95c0a83823c0297fba6ae6266195e86c61ec540ca58afd8d01ba236c5ddb3f44b41fb9301ba6a836b15cad1875bae42ba6276670daff
+DIST regressiontests-2016.tar.gz 66908712 SHA256 30a72362f011fd9e3a8d33004018126f938536c13fcb70f590afc74beaec5406 SHA512 59902c1973c33ea8f003f21a737dc7cc64da3258112322eedc9834b53628134a6817d5ee5b3950c9bfd97a3a0580aef88ddef0609ef2c58693c96c7575651e01 WHIRLPOOL 9d210aed00ddfa57df47733169997ef04dec84c524eb5a9c5c6dd9b05ad9ec2d7f3c8a5a43f2ade9be166d80f35a260c04b1a48ac092f5969a213475bb63ae20
+DIST regressiontests-5.0.4.tar.gz 65193251 SHA256 89ad9bc067035ac8f340319b538c446983d937b910067e871911d7afe2ecb3f0 SHA512 747725fa28c1c9525596bdeeb8809e45268e19036c11dac67d043aa1c51748688ca37eb6014eb7e819eb927a8b9ca2631d0ace4cdff8ed491b08c316c530ab65 WHIRLPOOL e15ccab0a0beefac41aeff11e2e596e971167f1590eed159ff82c4a8e3aec1d234287be597026951904ecfe6099f30ef3bcd48f2098b9f5201bde62e15fbc4f9
+DIST regressiontests-5.1.3.tar.gz 66994083 SHA256 fd5797dcfd29f7ae70857a438dcd4200a8006fce222f297892c8e90123993ebc SHA512 486e86eb3b75bae822abe82dac4e1098aa13723bd04214021f835a2f0b847303f015a9ececc33aa5ae63d31a2eeae07e512f22464b6c0e26d1286b0781578022 WHIRLPOOL 6ddb76859ee8fa3aba4d995e397970e6fd270acbdd6cc07ab77de0aebb0bfdbd2bd1107ae39d4410e750641047ae4b75c703eafad95a57ff42deb3bf1c742d08
+EBUILD gromacs-2016.1.ebuild 7987 SHA256 b08ac9aeebcb1be657f0c5158a7ffe4000b4b8006aad0180d800dd813cd867ad SHA512 ce2b0d2730e87831a517468033cada7097ba431d8a60dcef77a04c9e05bf4cfacb6eb500a5196e378f4c69e5020f8e9f871eac6e61dd2776834aee006ecb167f WHIRLPOOL 48c75e1f34974d01cbe418bef84da7d5f11b901abba4f5e690297b703bacd47823a5e29cd502092ddfa7c37460269ac4f45d825d6c1567db2249aa5e8aeab3b2
+EBUILD gromacs-2016.2.ebuild 7971 SHA256 d31a9442cf6a8006a28c9e865d3eadebe456bc74a16eb99e3ff21dc3276025b1 SHA512 7a85084cc29da0d3da6c9aabf65320edb38cd682146cc1b739120b728c6704c3e20941b9022c846b84a111e3ca88f29ca21cdbcdf4c5b7204989ac194bf15725 WHIRLPOOL bb33ab24491d76672c5b90d5257f9f8551a9f5ab1b6ff03e01710876df08175aeefda8af1dc241d05f3e7212ff91adf53e1a8dea25ea753e40f7433d385a0180
+EBUILD gromacs-2016.3.ebuild 7974 SHA256 aa24c46b8980a9e24dc4ef179c74248731f5589f6ce45e1c4a088fc319e70e3b SHA512 9a3415f66fdd5832abf764b6adfe5deccb62b3f233ccd9156e1caac61907835c13623a3772673c43c9a3e9dbe544e83b2f20953a09d9b598c6af0120cfed558d WHIRLPOOL 4c25b8fa669bfd0f9c95f8e55df5c84481a187f7886fcd1b6b1b41a15cf33568b2bda517ca8a49355a6c7c74c084ce5b2f99f4b5e1a79dc21f3fdb676dc57673
+EBUILD gromacs-2016.4.ebuild 7987 SHA256 b08ac9aeebcb1be657f0c5158a7ffe4000b4b8006aad0180d800dd813cd867ad SHA512 ce2b0d2730e87831a517468033cada7097ba431d8a60dcef77a04c9e05bf4cfacb6eb500a5196e378f4c69e5020f8e9f871eac6e61dd2776834aee006ecb167f WHIRLPOOL 48c75e1f34974d01cbe418bef84da7d5f11b901abba4f5e690297b703bacd47823a5e29cd502092ddfa7c37460269ac4f45d825d6c1567db2249aa5e8aeab3b2
+EBUILD gromacs-2016.9999.ebuild 7987 SHA256 b08ac9aeebcb1be657f0c5158a7ffe4000b4b8006aad0180d800dd813cd867ad SHA512 ce2b0d2730e87831a517468033cada7097ba431d8a60dcef77a04c9e05bf4cfacb6eb500a5196e378f4c69e5020f8e9f871eac6e61dd2776834aee006ecb167f WHIRLPOOL 48c75e1f34974d01cbe418bef84da7d5f11b901abba4f5e690297b703bacd47823a5e29cd502092ddfa7c37460269ac4f45d825d6c1567db2249aa5e8aeab3b2
+EBUILD gromacs-2016.ebuild 7968 SHA256 a63d5dccbcb7b6e990376fe76598445eca85d7f3721771b575aab1c1ba9ebb69 SHA512 3ca5d4ae9b01a106b279bc828e42366a017b9517a450b773b944c6d12dce64199e3a80d280e4c475c637c70009a1a0fd1ca74f99b03f08067a10d9e9ad450d8f WHIRLPOOL 8c6fc59a53161b049f92d6920eebc89fda1d1d6b1fc36770dfa5cfcfc83aad476e7fa58345df078984b6457ca2f0d0e273587ee4f271fcc676ab98e37fe310e0
+EBUILD gromacs-4.6.9999.ebuild 8110 SHA256 96cbde0c96f098c536ef0c1f0d21c59e3a36aef5e479ab24167bd47927f4cb4a SHA512 2206e257f0b29b6f3a90c5d7739079b9add3e04f2a3acbd58c814811b389b5d51b3594815a94529d1de43deb380504029c302d18fc16d63a81c92727254e863e WHIRLPOOL e56c938308d7280c6a7ae70a91deae9108c61e8d74542d1c67d061e69fa5b8d65b3477b459737bb87137cbe9c377885024b250189d04ba5cd90acddae55c6114
+EBUILD gromacs-5.0.4.ebuild 8429 SHA256 58a81cb292694c9aeabc0c9c6f16fae3eca51c31b398f32d2976993680e23cbb SHA512 d1e91cc25c5f90bd0fbad15060cae9c8bf1235ca45a2b72521b3a4f5f091bdd7d32ec2e6ff2bb22cd3fe165092f11a24ea148ae8000b8517f0b8671f6c2af6f2 WHIRLPOOL 513f5bcfb5b0a9396334eb38dc6d016b752814b7f459114b38e3c7bed8eadedb12a74697855b578786e6dbee1edcf1efc600fc2882e58ebbb4f7e2ee20b0f4e3
+EBUILD gromacs-5.0.9999.ebuild 8439 SHA256 6076d6c33242030628b75f79c3ac0168768efc000f8acbff271e6c435f3032d3 SHA512 6756116cdeae9c21b094f74ea1b1d9f41617467dc736878cdcff27fed9f53b338830a608e23e87238d0756884799fbc5d62f02685774ea86c239ecc3e8804814 WHIRLPOOL 356da8a8bea3b28d52acb9fb4391615667241530452d78493ed76697c88be05cb5161995268c52e3f51ff9d3c009b7694204102b9d7fe993770f75f559cfc891
+EBUILD gromacs-5.1.3.ebuild 7783 SHA256 dbdef1d04a48534a458562fd9b57ee80884cd79bcfa330c6a73617582c3af557 SHA512 8cf9573ec5dfa09e283b1d50513863214ca216007ad76cce15bc54caa2f1e55de8c992db8bd4b2e4fa95bc3f5d50eef32fce78ca61bc09cae2fe37e35a4cee68 WHIRLPOOL f052b72e7d98b650fd4b5e98c22ab638434cef8d7b980f3d5b3ef8f2f25dbb4829233f4a1d3b55043edf239190c49b093b2a66b9ed2e1da1f02745084243d104
+EBUILD gromacs-5.1.9999.ebuild 7783 SHA256 dbdef1d04a48534a458562fd9b57ee80884cd79bcfa330c6a73617582c3af557 SHA512 8cf9573ec5dfa09e283b1d50513863214ca216007ad76cce15bc54caa2f1e55de8c992db8bd4b2e4fa95bc3f5d50eef32fce78ca61bc09cae2fe37e35a4cee68 WHIRLPOOL f052b72e7d98b650fd4b5e98c22ab638434cef8d7b980f3d5b3ef8f2f25dbb4829233f4a1d3b55043edf239190c49b093b2a66b9ed2e1da1f02745084243d104
+EBUILD gromacs-9999.ebuild 7710 SHA256 abaf042bb97763484fa218d866bd1e5b3d8f6412adc1812474433400ddfe1703 SHA512 a3cb96cf8ada5f278b4b932fafac93659ca2c65ab530337567bf87be53ddea7123e2e03c0c3fefd2faca8bc3ce9494ebf960f1fdf9cff000b548790b5e0c9d81 WHIRLPOOL ffd2dc5f13c0925fe70ae99b318a17400e53d5cf963f803f5a38be4e92eeed0876af4b2443530a1fdaa5240abc652cbc18edc88e321e5dccd993ee3c92ecb594
+MISC ChangeLog 5897 SHA256 f9aa37d4f0d3e91213ecc14abde6a5964e078116d3738d5a6e8d4c6fc8caba9d SHA512 851d8c285829d064faa97aa4dfb754246da26f324f82f86c12d85817b4f21df6da4d4450286d92e589d6248557a5477ae283e627412f93f23b1149051bff304c WHIRLPOOL af9519b2218526a1173e71880c17657353dfa5a9d045f0b5c7d0714e294a808e41b1c0bf26afe30a053ff67c46f49dfb28b3a093e5194a9f86cc2d84cf52becc
+MISC ChangeLog-2015 25428 SHA256 53aac500e5e16707be8e785a6dc56446b68432df865673ec8d2888d1f1af7c09 SHA512 a593fca6785df3966a28fb52c7f4dec13d52a081a26a5df58e43504503b5dbc6ce33e8ede0aa76a63e80a8b4eb38254d7b620be9cbb3698d0dd735392ec9b810 WHIRLPOOL 0e441b5c8555d8c48398fe61e19da0fd3120ed386402729edd72799ab57743cf61091438088923624caf5b709ab94ac4d5967033f06c252610972893dd8785d2
+MISC metadata.xml 1221 SHA256 e97c67c09ba23439f9ca347b568ba4dfb127f646d1b6dfe81c3d0361e1a0466a SHA512 97190ed07204e0c32df368070cf16103f0fb7f263d6e49d5a00294f5c5ae9e25e5280caf9d2931f77cb72e104424c8abe1c13fda839825b5eea21834bd200f42 WHIRLPOOL 482e708eb59ef67664cf865aad5394c243daed6af93839bd997593c00d5fe007fb653869052910c0bff8cd643cbbef07f8cc9add1dc3e033b4cac0631128488e
diff --git a/sci-chemistry/gromacs/gromacs-2016.1.ebuild b/sci-chemistry/gromacs/gromacs-2016.1.ebuild
new file mode 100644
index 000000000000..7e426ddfdf5a
--- /dev/null
+++ b/sci-chemistry/gromacs/gromacs-2016.1.ebuild
@@ -0,0 +1,276 @@
+# Copyright 1999-2017 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=6
+
+CMAKE_MAKEFILE_GENERATOR="ninja"
+
+inherit bash-completion-r1 cmake-utils cuda eutils multilib readme.gentoo-r1 toolchain-funcs xdg-utils
+
+if [[ $PV = *9999* ]]; then
+	EGIT_REPO_URI="git://git.gromacs.org/gromacs.git
+		https://gerrit.gromacs.org/gromacs.git
+		https://github.com/gromacs/gromacs.git
+		http://repo.or.cz/r/gromacs.git"
+	[[ $PV = 9999 ]] && EGIT_BRANCH="master" || EGIT_BRANCH="release-${PV:0:4}"
+	inherit git-r3
+	KEYWORDS=""
+else
+	SRC_URI="ftp://ftp.gromacs.org/pub/${PN}/${PN}-${PV/_/-}.tar.gz
+		test? ( http://gerrit.gromacs.org/download/regressiontests-${PV/_/-}.tar.gz )"
+	KEYWORDS="~amd64 ~arm ~x86 ~amd64-linux ~x86-linux ~x64-macos ~x86-macos"
+fi
+
+ACCE_IUSE="cpu_flags_x86_sse2 cpu_flags_x86_sse4_1 cpu_flags_x86_fma4 cpu_flags_x86_avx cpu_flags_x86_avx2"
+
+DESCRIPTION="The ultimate molecular dynamics simulation package"
+HOMEPAGE="http://www.gromacs.org/"
+
+# see COPYING for details
+# http://repo.or.cz/w/gromacs.git/blob/HEAD:/COPYING
+#        base,    vmd plugins, fftpack from numpy,  blas/lapck from netlib,        memtestG80 library,  mpi_thread lib
+LICENSE="LGPL-2.1 UoI-NCSA !mkl? ( !fftw? ( BSD ) !blas? ( BSD ) !lapack? ( BSD ) ) cuda? ( LGPL-3 ) threads? ( BSD )"
+SLOT="0/${PV}"
+IUSE="X blas cuda +doc -double-precision +fftw +hwloc lapack mkl mpi +offensive openmp +single-precision test +threads +tng ${ACCE_IUSE}"
+
+CDEPEND="
+	X? (
+		x11-libs/libX11
+		x11-libs/libSM
+		x11-libs/libICE
+		)
+	blas? ( virtual/blas )
+	cuda? ( >=dev-util/nvidia-cuda-toolkit-4.2.9-r1 )
+	fftw? ( sci-libs/fftw:3.0 )
+	hwloc? ( sys-apps/hwloc )
+	lapack? ( virtual/lapack )
+	mkl? ( sci-libs/mkl )
+	mpi? ( virtual/mpi )
+	"
+DEPEND="${CDEPEND}
+	virtual/pkgconfig
+	doc? (
+		app-doc/doxygen
+		dev-texlive/texlive-latex
+		dev-texlive/texlive-latexextra
+		media-gfx/imagemagick
+	)
+	dev-libs/tinyxml2
+	"
+RDEPEND="${CDEPEND}"
+
+REQUIRED_USE="
+	|| ( single-precision double-precision )
+	cuda? ( single-precision )
+	mkl? ( !blas !fftw !lapack )"
+
+DOCS=( AUTHORS README )
+
+if [[ ${PV} != *9999 ]]; then
+	S="${WORKDIR}/${PN}-${PV/_/-}"
+fi
+
+pkg_pretend() {
+	[[ $(gcc-version) == "4.1" ]] && die "gcc 4.1 is not supported by gromacs"
+	use openmp && ! tc-has-openmp && \
+		die "Please switch to an openmp compatible compiler"
+}
+
+src_unpack() {
+	if [[ ${PV} != *9999 ]]; then
+		default
+	else
+		git-r3_src_unpack
+		if use test; then
+			EGIT_REPO_URI="git://git.gromacs.org/regressiontests.git" \
+			EGIT_BRANCH="${EGIT_BRANCH}" \
+			EGIT_CHECKOUT_DIR="${WORKDIR}/regressiontests"\
+				git-r3_src_unpack
+		fi
+	fi
+}
+
+src_prepare() {
+	#notes/todos
+	# -on apple: there is framework support
+
+	xdg_environment_reset #591952
+
+	cmake-utils_src_prepare
+
+	use cuda && cuda_src_prepare
+
+	GMX_DIRS=""
+	use single-precision && GMX_DIRS+=" float"
+	use double-precision && GMX_DIRS+=" double"
+
+	if use test; then
+		for x in ${GMX_DIRS}; do
+			mkdir -p "${WORKDIR}/${P}_${x}" || die
+			cp -al "${WORKDIR}/regressiontests"* "${WORKDIR}/${P}_${x}/tests" || die
+		done
+	fi
+
+	DOC_CONTENTS="Gromacs can use sci-chemistry/vmd to read additional file formats"
+}
+
+src_configure() {
+	local mycmakeargs_pre=( ) extra fft_opts=( )
+
+	#go from slowest to fastest acceleration
+	local acce="None"
+	use cpu_flags_x86_sse2 && acce="SSE2"
+	use cpu_flags_x86_sse4_1 && acce="SSE4.1"
+	use cpu_flags_x86_fma4 && acce="AVX_128_FMA"
+	use cpu_flags_x86_avx && acce="AVX_256"
+	use cpu_flags_x86_avx2 && acce="AVX2_256"
+
+	#to create man pages, build tree binaries are executed (bug #398437)
+	[[ ${CHOST} = *-darwin* ]] && \
+		extra+=" -DCMAKE_BUILD_WITH_INSTALL_RPATH=OFF"
+
+	if use fftw; then
+		fft_opts=( -DGMX_FFT_LIBRARY=fftw3 )
+	elif use mkl && has_version "=sci-libs/mkl-10*"; then
+		fft_opts=( -DGMX_FFT_LIBRARY=mkl
+			-DMKL_INCLUDE_DIR="${MKLROOT}/include"
+			-DMKL_LIBRARIES="$(echo /opt/intel/mkl/10.0.5.025/lib/*/libmkl.so);$(echo /opt/intel/mkl/10.0.5.025/lib/*/libiomp*.so)"
+		)
+	elif use mkl && has_version "<sci-libs/mkl-11.3"; then
+		local bits=$(get_libdir)
+		fft_opts=( -DGMX_FFT_LIBRARY=mkl
+			-DMKL_INCLUDE_DIR="$(echo /opt/intel/*/mkl/include)"
+			-DMKL_LIBRARIES="$(echo /opt/intel/*/mkl/lib/*${bits/lib}/libmkl_rt.so)"
+		)
+	elif use mkl; then
+		local bits=$(get_libdir)
+		fft_opts=( -DGMX_FFT_LIBRARY=mkl
+			-DMKL_INCLUDE_DIR="$(echo /opt/intel/*/linux/mkl/include)"
+			-DMKL_LIBRARIES="$(echo /opt/intel/*/linux/mkl/lib/*${bits/lib}/libmkl_rt.so)"
+		)
+	else
+		fft_opts=( -DGMX_FFT_LIBRARY=fftpack )
+	fi
+
+	mycmakeargs_pre+=(
+		"${fft_opts[@]}"
+		-DGMX_X11=$(usex X)
+		-DGMX_EXTERNAL_BLAS=$(usex blas)
+		-DGMX_EXTERNAL_LAPACK=$(usex lapack)
+		-DGMX_OPENMP=$(usex openmp)
+		-DGMX_COOL_QUOTES=$(usex offensive)
+		-DGMX_USE_TNG=$(usex tng)
+		-DGMX_BUILD_MANUAL=$(usex doc)
+		-DGMX_HWLOC=$(usex hwloc)
+		-DGMX_DEFAULT_SUFFIX=off
+		-DGMX_SIMD="$acce"
+		-DGMX_LIB_INSTALL_DIR="$(get_libdir)"
+		-DGMX_VMD_PLUGIN_PATH="${EPREFIX}/usr/$(get_libdir)/vmd/plugins/*/molfile/"
+		-DBUILD_TESTING=OFF
+		-DGMX_BUILD_UNITTESTS=OFF
+		-DGMX_EXTERNAL_TINYXML2=ON
+		${extra}
+	)
+
+	for x in ${GMX_DIRS}; do
+		einfo "Configuring for ${x} precision"
+		local suffix=""
+		#if we build single and double - double is suffixed
+		use double-precision && use single-precision && \
+			[[ ${x} = "double" ]] && suffix="_d"
+		local p
+		[[ ${x} = "double" ]] && p="-DGMX_DOUBLE=ON" || p="-DGMX_DOUBLE=OFF"
+		local cuda=( "-DGMX_GPU=OFF" )
+		[[ ${x} = "float" ]] && use cuda && \
+			cuda=( -DGMX_GPU=ON )
+		mycmakeargs=(
+			${mycmakeargs_pre[@]} ${p}
+			-DGMX_MPI=OFF
+			-DGMX_THREAD_MPI=$(usex threads)
+			"${cuda[@]}"
+			"$(use test && echo -DREGRESSIONTEST_PATH="${WORKDIR}/${P}_${x}/tests")"
+			-DGMX_BINARY_SUFFIX="${suffix}"
+			-DGMX_LIBS_SUFFIX="${suffix}"
+			)
+		BUILD_DIR="${WORKDIR}/${P}_${x}" cmake-utils_src_configure
+		[[ ${CHOST} != *-darwin* ]] || \
+		  sed -i '/SET(CMAKE_INSTALL_NAME_DIR/s/^/#/' "${WORKDIR}/${P}_${x}/gentoo_rules.cmake" || die
+		use mpi || continue
+		einfo "Configuring for ${x} precision with mpi"
+		mycmakeargs=(
+			${mycmakeargs_pre[@]} ${p}
+			-DGMX_THREAD_MPI=OFF
+			-DGMX_MPI=ON ${cuda}
+			-DGMX_OPENMM=OFF
+			-DGMX_BUILD_MDRUN_ONLY=ON
+			-DBUILD_SHARED_LIBS=OFF
+			-DGMX_BUILD_MANUAL=OFF
+			-DGMX_BINARY_SUFFIX="_mpi${suffix}"
+			-DGMX_LIBS_SUFFIX="_mpi${suffix}"
+			)
+		BUILD_DIR="${WORKDIR}/${P}_${x}_mpi" CC="mpicc" cmake-utils_src_configure
+		[[ ${CHOST} != *-darwin* ]] || \
+		  sed -i '/SET(CMAKE_INSTALL_NAME_DIR/s/^/#/' "${WORKDIR}/${P}_${x}_mpi/gentoo_rules.cmake" || die
+	done
+}
+
+src_compile() {
+	for x in ${GMX_DIRS}; do
+		einfo "Compiling for ${x} precision"
+		BUILD_DIR="${WORKDIR}/${P}_${x}"\
+			cmake-utils_src_compile
+		# not 100% necessary for rel ebuilds as available from website
+		if use doc; then
+			BUILD_DIR="${WORKDIR}/${P}_${x}"\
+				cmake-utils_src_compile manual
+		fi
+		use mpi || continue
+		einfo "Compiling for ${x} precision with mpi"
+		BUILD_DIR="${WORKDIR}/${P}_${x}_mpi"\
+			cmake-utils_src_compile
+	done
+}
+
+src_test() {
+	for x in ${GMX_DIRS}; do
+		BUILD_DIR="${WORKDIR}/${P}_${x}"\
+			cmake-utils_src_make check
+	done
+}
+
+src_install() {
+	for x in ${GMX_DIRS}; do
+		BUILD_DIR="${WORKDIR}/${P}_${x}" \
+			cmake-utils_src_install
+		if use doc; then
+			newdoc "${WORKDIR}/${P}_${x}"/docs/manual/gromacs.pdf "${PN}-manual-${PV}.pdf"
+		fi
+		use mpi || continue
+		BUILD_DIR="${WORKDIR}/${P}_${x}_mpi" \
+			cmake-utils_src_install
+	done
+
+	if use tng; then
+		insinto /usr/include/tng
+		doins src/external/tng_io/include/tng/*h
+	fi
+	# drop unneeded stuff
+	rm "${ED}"usr/bin/GMXRC* || die
+	for x in "${ED}"usr/bin/gmx-completion-*.bash ; do
+		local n=${x##*/gmx-completion-}
+		n="${n%.bash}"
+		cat "${ED}"usr/bin/gmx-completion.bash "$x" > "${T}/${n}" || die
+		newbashcomp "${T}"/"${n}" "${n}"
+	done
+	rm "${ED}"usr/bin/gmx-completion*.bash || die
+	readme.gentoo_create_doc
+}
+
+pkg_postinst() {
+	einfo
+	einfo  "Please read and cite:"
+	einfo  "Gromacs 4, J. Chem. Theory Comput. 4, 435 (2008). "
+	einfo  "https://dx.doi.org/10.1021/ct700301q"
+	einfo
+	readme.gentoo_print_elog
+}
diff --git a/sci-chemistry/gromacs/gromacs-2016.2.ebuild b/sci-chemistry/gromacs/gromacs-2016.2.ebuild
new file mode 100644
index 000000000000..3b371d273088
--- /dev/null
+++ b/sci-chemistry/gromacs/gromacs-2016.2.ebuild
@@ -0,0 +1,275 @@
+# Copyright 1999-2017 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=6
+
+CMAKE_MAKEFILE_GENERATOR="ninja"
+
+inherit bash-completion-r1 cmake-utils cuda eutils multilib readme.gentoo-r1 toolchain-funcs xdg-utils
+
+if [[ $PV = *9999* ]]; then
+	EGIT_REPO_URI="git://git.gromacs.org/gromacs.git
+		https://gerrit.gromacs.org/gromacs.git
+		https://github.com/gromacs/gromacs.git
+		http://repo.or.cz/r/gromacs.git"
+	[[ $PV = 9999 ]] && EGIT_BRANCH="master" || EGIT_BRANCH="release-${PV:0:4}"
+	inherit git-r3
+else
+	SRC_URI="ftp://ftp.gromacs.org/pub/${PN}/${PN}-${PV/_/-}.tar.gz
+		test? ( http://gerrit.gromacs.org/download/regressiontests-${PV/_/-}.tar.gz )"
+	KEYWORDS="amd64 arm x86 ~amd64-linux ~x86-linux ~x64-macos ~x86-macos"
+fi
+
+ACCE_IUSE="cpu_flags_x86_sse2 cpu_flags_x86_sse4_1 cpu_flags_x86_fma4 cpu_flags_x86_avx cpu_flags_x86_avx2"
+
+DESCRIPTION="The ultimate molecular dynamics simulation package"
+HOMEPAGE="http://www.gromacs.org/"
+
+# see COPYING for details
+# http://repo.or.cz/w/gromacs.git/blob/HEAD:/COPYING
+#        base,    vmd plugins, fftpack from numpy,  blas/lapck from netlib,        memtestG80 library,  mpi_thread lib
+LICENSE="LGPL-2.1 UoI-NCSA !mkl? ( !fftw? ( BSD ) !blas? ( BSD ) !lapack? ( BSD ) ) cuda? ( LGPL-3 ) threads? ( BSD )"
+SLOT="0/${PV}"
+IUSE="X blas cuda +doc -double-precision +fftw +hwloc lapack mkl mpi +offensive openmp +single-precision test +threads +tng ${ACCE_IUSE}"
+
+CDEPEND="
+	X? (
+		x11-libs/libX11
+		x11-libs/libSM
+		x11-libs/libICE
+		)
+	blas? ( virtual/blas )
+	cuda? ( >=dev-util/nvidia-cuda-toolkit-4.2.9-r1 )
+	fftw? ( sci-libs/fftw:3.0 )
+	hwloc? ( sys-apps/hwloc )
+	lapack? ( virtual/lapack )
+	mkl? ( sci-libs/mkl )
+	mpi? ( virtual/mpi )
+	"
+DEPEND="${CDEPEND}
+	virtual/pkgconfig
+	doc? (
+		app-doc/doxygen
+		dev-texlive/texlive-latex
+		dev-texlive/texlive-latexextra
+		media-gfx/imagemagick
+	)
+	dev-libs/tinyxml2
+	"
+RDEPEND="${CDEPEND}"
+
+REQUIRED_USE="
+	|| ( single-precision double-precision )
+	cuda? ( single-precision )
+	mkl? ( !blas !fftw !lapack )"
+
+DOCS=( AUTHORS README )
+
+if [[ ${PV} != *9999 ]]; then
+	S="${WORKDIR}/${PN}-${PV/_/-}"
+fi
+
+pkg_pretend() {
+	[[ $(gcc-version) == "4.1" ]] && die "gcc 4.1 is not supported by gromacs"
+	use openmp && ! tc-has-openmp && \
+		die "Please switch to an openmp compatible compiler"
+}
+
+src_unpack() {
+	if [[ ${PV} != *9999 ]]; then
+		default
+	else
+		git-r3_src_unpack
+		if use test; then
+			EGIT_REPO_URI="git://git.gromacs.org/regressiontests.git" \
+			EGIT_BRANCH="${EGIT_BRANCH}" \
+			EGIT_CHECKOUT_DIR="${WORKDIR}/regressiontests"\
+				git-r3_src_unpack
+		fi
+	fi
+}
+
+src_prepare() {
+	#notes/todos
+	# -on apple: there is framework support
+
+	xdg_environment_reset #591952
+
+	cmake-utils_src_prepare
+
+	use cuda && cuda_src_prepare
+
+	GMX_DIRS=""
+	use single-precision && GMX_DIRS+=" float"
+	use double-precision && GMX_DIRS+=" double"
+
+	if use test; then
+		for x in ${GMX_DIRS}; do
+			mkdir -p "${WORKDIR}/${P}_${x}" || die
+			cp -al "${WORKDIR}/regressiontests"* "${WORKDIR}/${P}_${x}/tests" || die
+		done
+	fi
+
+	DOC_CONTENTS="Gromacs can use sci-chemistry/vmd to read additional file formats"
+}
+
+src_configure() {
+	local mycmakeargs_pre=( ) extra fft_opts=( )
+
+	#go from slowest to fastest acceleration
+	local acce="None"
+	use cpu_flags_x86_sse2 && acce="SSE2"
+	use cpu_flags_x86_sse4_1 && acce="SSE4.1"
+	use cpu_flags_x86_fma4 && acce="AVX_128_FMA"
+	use cpu_flags_x86_avx && acce="AVX_256"
+	use cpu_flags_x86_avx2 && acce="AVX2_256"
+
+	#to create man pages, build tree binaries are executed (bug #398437)
+	[[ ${CHOST} = *-darwin* ]] && \
+		extra+=" -DCMAKE_BUILD_WITH_INSTALL_RPATH=OFF"
+
+	if use fftw; then
+		fft_opts=( -DGMX_FFT_LIBRARY=fftw3 )
+	elif use mkl && has_version "=sci-libs/mkl-10*"; then
+		fft_opts=( -DGMX_FFT_LIBRARY=mkl
+			-DMKL_INCLUDE_DIR="${MKLROOT}/include"
+			-DMKL_LIBRARIES="$(echo /opt/intel/mkl/10.0.5.025/lib/*/libmkl.so);$(echo /opt/intel/mkl/10.0.5.025/lib/*/libiomp*.so)"
+		)
+	elif use mkl && has_version "<sci-libs/mkl-11.3"; then
+		local bits=$(get_libdir)
+		fft_opts=( -DGMX_FFT_LIBRARY=mkl
+			-DMKL_INCLUDE_DIR="$(echo /opt/intel/*/mkl/include)"
+			-DMKL_LIBRARIES="$(echo /opt/intel/*/mkl/lib/*${bits/lib}/libmkl_rt.so)"
+		)
+	elif use mkl; then
+		local bits=$(get_libdir)
+		fft_opts=( -DGMX_FFT_LIBRARY=mkl
+			-DMKL_INCLUDE_DIR="$(echo /opt/intel/*/linux/mkl/include)"
+			-DMKL_LIBRARIES="$(echo /opt/intel/*/linux/mkl/lib/*${bits/lib}/libmkl_rt.so)"
+		)
+	else
+		fft_opts=( -DGMX_FFT_LIBRARY=fftpack )
+	fi
+
+	mycmakeargs_pre+=(
+		"${fft_opts[@]}"
+		-DGMX_X11=$(usex X)
+		-DGMX_EXTERNAL_BLAS=$(usex blas)
+		-DGMX_EXTERNAL_LAPACK=$(usex lapack)
+		-DGMX_OPENMP=$(usex openmp)
+		-DGMX_COOL_QUOTES=$(usex offensive)
+		-DGMX_USE_TNG=$(usex tng)
+		-DGMX_BUILD_MANUAL=$(usex doc)
+		-DGMX_HWLOC=$(usex hwloc)
+		-DGMX_DEFAULT_SUFFIX=off
+		-DGMX_SIMD="$acce"
+		-DGMX_LIB_INSTALL_DIR="$(get_libdir)"
+		-DGMX_VMD_PLUGIN_PATH="${EPREFIX}/usr/$(get_libdir)/vmd/plugins/*/molfile/"
+		-DBUILD_TESTING=OFF
+		-DGMX_BUILD_UNITTESTS=OFF
+		-DGMX_EXTERNAL_TINYXML2=ON
+		${extra}
+	)
+
+	for x in ${GMX_DIRS}; do
+		einfo "Configuring for ${x} precision"
+		local suffix=""
+		#if we build single and double - double is suffixed
+		use double-precision && use single-precision && \
+			[[ ${x} = "double" ]] && suffix="_d"
+		local p
+		[[ ${x} = "double" ]] && p="-DGMX_DOUBLE=ON" || p="-DGMX_DOUBLE=OFF"
+		local cuda=( "-DGMX_GPU=OFF" )
+		[[ ${x} = "float" ]] && use cuda && \
+			cuda=( -DGMX_GPU=ON )
+		mycmakeargs=(
+			${mycmakeargs_pre[@]} ${p}
+			-DGMX_MPI=OFF
+			-DGMX_THREAD_MPI=$(usex threads)
+			"${cuda[@]}"
+			"$(use test && echo -DREGRESSIONTEST_PATH="${WORKDIR}/${P}_${x}/tests")"
+			-DGMX_BINARY_SUFFIX="${suffix}"
+			-DGMX_LIBS_SUFFIX="${suffix}"
+			)
+		BUILD_DIR="${WORKDIR}/${P}_${x}" cmake-utils_src_configure
+		[[ ${CHOST} != *-darwin* ]] || \
+		  sed -i '/SET(CMAKE_INSTALL_NAME_DIR/s/^/#/' "${WORKDIR}/${P}_${x}/gentoo_rules.cmake" || die
+		use mpi || continue
+		einfo "Configuring for ${x} precision with mpi"
+		mycmakeargs=(
+			${mycmakeargs_pre[@]} ${p}
+			-DGMX_THREAD_MPI=OFF
+			-DGMX_MPI=ON ${cuda}
+			-DGMX_OPENMM=OFF
+			-DGMX_BUILD_MDRUN_ONLY=ON
+			-DBUILD_SHARED_LIBS=OFF
+			-DGMX_BUILD_MANUAL=OFF
+			-DGMX_BINARY_SUFFIX="_mpi${suffix}"
+			-DGMX_LIBS_SUFFIX="_mpi${suffix}"
+			)
+		BUILD_DIR="${WORKDIR}/${P}_${x}_mpi" CC="mpicc" cmake-utils_src_configure
+		[[ ${CHOST} != *-darwin* ]] || \
+		  sed -i '/SET(CMAKE_INSTALL_NAME_DIR/s/^/#/' "${WORKDIR}/${P}_${x}_mpi/gentoo_rules.cmake" || die
+	done
+}
+
+src_compile() {
+	for x in ${GMX_DIRS}; do
+		einfo "Compiling for ${x} precision"
+		BUILD_DIR="${WORKDIR}/${P}_${x}"\
+			cmake-utils_src_compile
+		# not 100% necessary for rel ebuilds as available from website
+		if use doc; then
+			BUILD_DIR="${WORKDIR}/${P}_${x}"\
+				cmake-utils_src_compile manual
+		fi
+		use mpi || continue
+		einfo "Compiling for ${x} precision with mpi"
+		BUILD_DIR="${WORKDIR}/${P}_${x}_mpi"\
+			cmake-utils_src_compile
+	done
+}
+
+src_test() {
+	for x in ${GMX_DIRS}; do
+		BUILD_DIR="${WORKDIR}/${P}_${x}"\
+			cmake-utils_src_make check
+	done
+}
+
+src_install() {
+	for x in ${GMX_DIRS}; do
+		BUILD_DIR="${WORKDIR}/${P}_${x}" \
+			cmake-utils_src_install
+		if use doc; then
+			newdoc "${WORKDIR}/${P}_${x}"/docs/manual/gromacs.pdf "${PN}-manual-${PV}.pdf"
+		fi
+		use mpi || continue
+		BUILD_DIR="${WORKDIR}/${P}_${x}_mpi" \
+			cmake-utils_src_install
+	done
+
+	if use tng; then
+		insinto /usr/include/tng
+		doins src/external/tng_io/include/tng/*h
+	fi
+	# drop unneeded stuff
+	rm "${ED}"usr/bin/GMXRC* || die
+	for x in "${ED}"usr/bin/gmx-completion-*.bash ; do
+		local n=${x##*/gmx-completion-}
+		n="${n%.bash}"
+		cat "${ED}"usr/bin/gmx-completion.bash "$x" > "${T}/${n}" || die
+		newbashcomp "${T}"/"${n}" "${n}"
+	done
+	rm "${ED}"usr/bin/gmx-completion*.bash || die
+	readme.gentoo_create_doc
+}
+
+pkg_postinst() {
+	einfo
+	einfo  "Please read and cite:"
+	einfo  "Gromacs 4, J. Chem. Theory Comput. 4, 435 (2008). "
+	einfo  "https://dx.doi.org/10.1021/ct700301q"
+	einfo
+	readme.gentoo_print_elog
+}
diff --git a/sci-chemistry/gromacs/gromacs-2016.3.ebuild b/sci-chemistry/gromacs/gromacs-2016.3.ebuild
new file mode 100644
index 000000000000..b361f69c44f4
--- /dev/null
+++ b/sci-chemistry/gromacs/gromacs-2016.3.ebuild
@@ -0,0 +1,275 @@
+# Copyright 1999-2017 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=6
+
+CMAKE_MAKEFILE_GENERATOR="ninja"
+
+inherit bash-completion-r1 cmake-utils cuda eutils multilib readme.gentoo-r1 toolchain-funcs xdg-utils
+
+if [[ $PV = *9999* ]]; then
+	EGIT_REPO_URI="git://git.gromacs.org/gromacs.git
+		https://gerrit.gromacs.org/gromacs.git
+		https://github.com/gromacs/gromacs.git
+		http://repo.or.cz/r/gromacs.git"
+	[[ $PV = 9999 ]] && EGIT_BRANCH="master" || EGIT_BRANCH="release-${PV:0:4}"
+	inherit git-r3
+else
+	SRC_URI="ftp://ftp.gromacs.org/pub/${PN}/${PN}-${PV/_/-}.tar.gz
+		test? ( http://gerrit.gromacs.org/download/regressiontests-${PV/_/-}.tar.gz )"
+	KEYWORDS="~amd64 ~arm ~x86 ~amd64-linux ~x86-linux ~x64-macos ~x86-macos"
+fi
+
+ACCE_IUSE="cpu_flags_x86_sse2 cpu_flags_x86_sse4_1 cpu_flags_x86_fma4 cpu_flags_x86_avx cpu_flags_x86_avx2"
+
+DESCRIPTION="The ultimate molecular dynamics simulation package"
+HOMEPAGE="http://www.gromacs.org/"
+
+# see COPYING for details
+# http://repo.or.cz/w/gromacs.git/blob/HEAD:/COPYING
+#        base,    vmd plugins, fftpack from numpy,  blas/lapck from netlib,        memtestG80 library,  mpi_thread lib
+LICENSE="LGPL-2.1 UoI-NCSA !mkl? ( !fftw? ( BSD ) !blas? ( BSD ) !lapack? ( BSD ) ) cuda? ( LGPL-3 ) threads? ( BSD )"
+SLOT="0/${PV}"
+IUSE="X blas cuda +doc -double-precision +fftw +hwloc lapack mkl mpi +offensive openmp +single-precision test +threads +tng ${ACCE_IUSE}"
+
+CDEPEND="
+	X? (
+		x11-libs/libX11
+		x11-libs/libSM
+		x11-libs/libICE
+		)
+	blas? ( virtual/blas )
+	cuda? ( >=dev-util/nvidia-cuda-toolkit-4.2.9-r1 )
+	fftw? ( sci-libs/fftw:3.0 )
+	hwloc? ( sys-apps/hwloc )
+	lapack? ( virtual/lapack )
+	mkl? ( sci-libs/mkl )
+	mpi? ( virtual/mpi )
+	"
+DEPEND="${CDEPEND}
+	virtual/pkgconfig
+	doc? (
+		app-doc/doxygen
+		dev-texlive/texlive-latex
+		dev-texlive/texlive-latexextra
+		media-gfx/imagemagick
+	)
+	dev-libs/tinyxml2
+	"
+RDEPEND="${CDEPEND}"
+
+REQUIRED_USE="
+	|| ( single-precision double-precision )
+	cuda? ( single-precision )
+	mkl? ( !blas !fftw !lapack )"
+
+DOCS=( AUTHORS README )
+
+if [[ ${PV} != *9999 ]]; then
+	S="${WORKDIR}/${PN}-${PV/_/-}"
+fi
+
+pkg_pretend() {
+	[[ $(gcc-version) == "4.1" ]] && die "gcc 4.1 is not supported by gromacs"
+	use openmp && ! tc-has-openmp && \
+		die "Please switch to an openmp compatible compiler"
+}
+
+src_unpack() {
+	if [[ ${PV} != *9999 ]]; then
+		default
+	else
+		git-r3_src_unpack
+		if use test; then
+			EGIT_REPO_URI="git://git.gromacs.org/regressiontests.git" \
+			EGIT_BRANCH="${EGIT_BRANCH}" \
+			EGIT_CHECKOUT_DIR="${WORKDIR}/regressiontests"\
+				git-r3_src_unpack
+		fi
+	fi
+}
+
+src_prepare() {
+	#notes/todos
+	# -on apple: there is framework support
+
+	xdg_environment_reset #591952
+
+	cmake-utils_src_prepare
+
+	use cuda && cuda_src_prepare
+
+	GMX_DIRS=""
+	use single-precision && GMX_DIRS+=" float"
+	use double-precision && GMX_DIRS+=" double"
+
+	if use test; then
+		for x in ${GMX_DIRS}; do
+			mkdir -p "${WORKDIR}/${P}_${x}" || die
+			cp -al "${WORKDIR}/regressiontests"* "${WORKDIR}/${P}_${x}/tests" || die
+		done
+	fi
+
+	DOC_CONTENTS="Gromacs can use sci-chemistry/vmd to read additional file formats"
+}
+
+src_configure() {
+	local mycmakeargs_pre=( ) extra fft_opts=( )
+
+	#go from slowest to fastest acceleration
+	local acce="None"
+	use cpu_flags_x86_sse2 && acce="SSE2"
+	use cpu_flags_x86_sse4_1 && acce="SSE4.1"
+	use cpu_flags_x86_fma4 && acce="AVX_128_FMA"
+	use cpu_flags_x86_avx && acce="AVX_256"
+	use cpu_flags_x86_avx2 && acce="AVX2_256"
+
+	#to create man pages, build tree binaries are executed (bug #398437)
+	[[ ${CHOST} = *-darwin* ]] && \
+		extra+=" -DCMAKE_BUILD_WITH_INSTALL_RPATH=OFF"
+
+	if use fftw; then
+		fft_opts=( -DGMX_FFT_LIBRARY=fftw3 )
+	elif use mkl && has_version "=sci-libs/mkl-10*"; then
+		fft_opts=( -DGMX_FFT_LIBRARY=mkl
+			-DMKL_INCLUDE_DIR="${MKLROOT}/include"
+			-DMKL_LIBRARIES="$(echo /opt/intel/mkl/10.0.5.025/lib/*/libmkl.so);$(echo /opt/intel/mkl/10.0.5.025/lib/*/libiomp*.so)"
+		)
+	elif use mkl && has_version "<sci-libs/mkl-11.3"; then
+		local bits=$(get_libdir)
+		fft_opts=( -DGMX_FFT_LIBRARY=mkl
+			-DMKL_INCLUDE_DIR="$(echo /opt/intel/*/mkl/include)"
+			-DMKL_LIBRARIES="$(echo /opt/intel/*/mkl/lib/*${bits/lib}/libmkl_rt.so)"
+		)
+	elif use mkl; then
+		local bits=$(get_libdir)
+		fft_opts=( -DGMX_FFT_LIBRARY=mkl
+			-DMKL_INCLUDE_DIR="$(echo /opt/intel/*/linux/mkl/include)"
+			-DMKL_LIBRARIES="$(echo /opt/intel/*/linux/mkl/lib/*${bits/lib}/libmkl_rt.so)"
+		)
+	else
+		fft_opts=( -DGMX_FFT_LIBRARY=fftpack )
+	fi
+
+	mycmakeargs_pre+=(
+		"${fft_opts[@]}"
+		-DGMX_X11=$(usex X)
+		-DGMX_EXTERNAL_BLAS=$(usex blas)
+		-DGMX_EXTERNAL_LAPACK=$(usex lapack)
+		-DGMX_OPENMP=$(usex openmp)
+		-DGMX_COOL_QUOTES=$(usex offensive)
+		-DGMX_USE_TNG=$(usex tng)
+		-DGMX_BUILD_MANUAL=$(usex doc)
+		-DGMX_HWLOC=$(usex hwloc)
+		-DGMX_DEFAULT_SUFFIX=off
+		-DGMX_SIMD="$acce"
+		-DGMX_LIB_INSTALL_DIR="$(get_libdir)"
+		-DGMX_VMD_PLUGIN_PATH="${EPREFIX}/usr/$(get_libdir)/vmd/plugins/*/molfile/"
+		-DBUILD_TESTING=OFF
+		-DGMX_BUILD_UNITTESTS=OFF
+		-DGMX_EXTERNAL_TINYXML2=ON
+		${extra}
+	)
+
+	for x in ${GMX_DIRS}; do
+		einfo "Configuring for ${x} precision"
+		local suffix=""
+		#if we build single and double - double is suffixed
+		use double-precision && use single-precision && \
+			[[ ${x} = "double" ]] && suffix="_d"
+		local p
+		[[ ${x} = "double" ]] && p="-DGMX_DOUBLE=ON" || p="-DGMX_DOUBLE=OFF"
+		local cuda=( "-DGMX_GPU=OFF" )
+		[[ ${x} = "float" ]] && use cuda && \
+			cuda=( -DGMX_GPU=ON )
+		mycmakeargs=(
+			${mycmakeargs_pre[@]} ${p}
+			-DGMX_MPI=OFF
+			-DGMX_THREAD_MPI=$(usex threads)
+			"${cuda[@]}"
+			"$(use test && echo -DREGRESSIONTEST_PATH="${WORKDIR}/${P}_${x}/tests")"
+			-DGMX_BINARY_SUFFIX="${suffix}"
+			-DGMX_LIBS_SUFFIX="${suffix}"
+			)
+		BUILD_DIR="${WORKDIR}/${P}_${x}" cmake-utils_src_configure
+		[[ ${CHOST} != *-darwin* ]] || \
+		  sed -i '/SET(CMAKE_INSTALL_NAME_DIR/s/^/#/' "${WORKDIR}/${P}_${x}/gentoo_rules.cmake" || die
+		use mpi || continue
+		einfo "Configuring for ${x} precision with mpi"
+		mycmakeargs=(
+			${mycmakeargs_pre[@]} ${p}
+			-DGMX_THREAD_MPI=OFF
+			-DGMX_MPI=ON ${cuda}
+			-DGMX_OPENMM=OFF
+			-DGMX_BUILD_MDRUN_ONLY=ON
+			-DBUILD_SHARED_LIBS=OFF
+			-DGMX_BUILD_MANUAL=OFF
+			-DGMX_BINARY_SUFFIX="_mpi${suffix}"
+			-DGMX_LIBS_SUFFIX="_mpi${suffix}"
+			)
+		BUILD_DIR="${WORKDIR}/${P}_${x}_mpi" CC="mpicc" cmake-utils_src_configure
+		[[ ${CHOST} != *-darwin* ]] || \
+		  sed -i '/SET(CMAKE_INSTALL_NAME_DIR/s/^/#/' "${WORKDIR}/${P}_${x}_mpi/gentoo_rules.cmake" || die
+	done
+}
+
+src_compile() {
+	for x in ${GMX_DIRS}; do
+		einfo "Compiling for ${x} precision"
+		BUILD_DIR="${WORKDIR}/${P}_${x}"\
+			cmake-utils_src_compile
+		# not 100% necessary for rel ebuilds as available from website
+		if use doc; then
+			BUILD_DIR="${WORKDIR}/${P}_${x}"\
+				cmake-utils_src_compile manual
+		fi
+		use mpi || continue
+		einfo "Compiling for ${x} precision with mpi"
+		BUILD_DIR="${WORKDIR}/${P}_${x}_mpi"\
+			cmake-utils_src_compile
+	done
+}
+
+src_test() {
+	for x in ${GMX_DIRS}; do
+		BUILD_DIR="${WORKDIR}/${P}_${x}"\
+			cmake-utils_src_make check
+	done
+}
+
+src_install() {
+	for x in ${GMX_DIRS}; do
+		BUILD_DIR="${WORKDIR}/${P}_${x}" \
+			cmake-utils_src_install
+		if use doc; then
+			newdoc "${WORKDIR}/${P}_${x}"/docs/manual/gromacs.pdf "${PN}-manual-${PV}.pdf"
+		fi
+		use mpi || continue
+		BUILD_DIR="${WORKDIR}/${P}_${x}_mpi" \
+			cmake-utils_src_install
+	done
+
+	if use tng; then
+		insinto /usr/include/tng
+		doins src/external/tng_io/include/tng/*h
+	fi
+	# drop unneeded stuff
+	rm "${ED}"usr/bin/GMXRC* || die
+	for x in "${ED}"usr/bin/gmx-completion-*.bash ; do
+		local n=${x##*/gmx-completion-}
+		n="${n%.bash}"
+		cat "${ED}"usr/bin/gmx-completion.bash "$x" > "${T}/${n}" || die
+		newbashcomp "${T}"/"${n}" "${n}"
+	done
+	rm "${ED}"usr/bin/gmx-completion*.bash || die
+	readme.gentoo_create_doc
+}
+
+pkg_postinst() {
+	einfo
+	einfo  "Please read and cite:"
+	einfo  "Gromacs 4, J. Chem. Theory Comput. 4, 435 (2008). "
+	einfo  "https://dx.doi.org/10.1021/ct700301q"
+	einfo
+	readme.gentoo_print_elog
+}
diff --git a/sci-chemistry/gromacs/gromacs-2016.4.ebuild b/sci-chemistry/gromacs/gromacs-2016.4.ebuild
new file mode 100644
index 000000000000..7e426ddfdf5a
--- /dev/null
+++ b/sci-chemistry/gromacs/gromacs-2016.4.ebuild
@@ -0,0 +1,276 @@
+# Copyright 1999-2017 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=6
+
+CMAKE_MAKEFILE_GENERATOR="ninja"
+
+inherit bash-completion-r1 cmake-utils cuda eutils multilib readme.gentoo-r1 toolchain-funcs xdg-utils
+
+if [[ $PV = *9999* ]]; then
+	EGIT_REPO_URI="git://git.gromacs.org/gromacs.git
+		https://gerrit.gromacs.org/gromacs.git
+		https://github.com/gromacs/gromacs.git
+		http://repo.or.cz/r/gromacs.git"
+	[[ $PV = 9999 ]] && EGIT_BRANCH="master" || EGIT_BRANCH="release-${PV:0:4}"
+	inherit git-r3
+	KEYWORDS=""
+else
+	SRC_URI="ftp://ftp.gromacs.org/pub/${PN}/${PN}-${PV/_/-}.tar.gz
+		test? ( http://gerrit.gromacs.org/download/regressiontests-${PV/_/-}.tar.gz )"
+	KEYWORDS="~amd64 ~arm ~x86 ~amd64-linux ~x86-linux ~x64-macos ~x86-macos"
+fi
+
+ACCE_IUSE="cpu_flags_x86_sse2 cpu_flags_x86_sse4_1 cpu_flags_x86_fma4 cpu_flags_x86_avx cpu_flags_x86_avx2"
+
+DESCRIPTION="The ultimate molecular dynamics simulation package"
+HOMEPAGE="http://www.gromacs.org/"
+
+# see COPYING for details
+# http://repo.or.cz/w/gromacs.git/blob/HEAD:/COPYING
+#        base,    vmd plugins, fftpack from numpy,  blas/lapck from netlib,        memtestG80 library,  mpi_thread lib
+LICENSE="LGPL-2.1 UoI-NCSA !mkl? ( !fftw? ( BSD ) !blas? ( BSD ) !lapack? ( BSD ) ) cuda? ( LGPL-3 ) threads? ( BSD )"
+SLOT="0/${PV}"
+IUSE="X blas cuda +doc -double-precision +fftw +hwloc lapack mkl mpi +offensive openmp +single-precision test +threads +tng ${ACCE_IUSE}"
+
+CDEPEND="
+	X? (
+		x11-libs/libX11
+		x11-libs/libSM
+		x11-libs/libICE
+		)
+	blas? ( virtual/blas )
+	cuda? ( >=dev-util/nvidia-cuda-toolkit-4.2.9-r1 )
+	fftw? ( sci-libs/fftw:3.0 )
+	hwloc? ( sys-apps/hwloc )
+	lapack? ( virtual/lapack )
+	mkl? ( sci-libs/mkl )
+	mpi? ( virtual/mpi )
+	"
+DEPEND="${CDEPEND}
+	virtual/pkgconfig
+	doc? (
+		app-doc/doxygen
+		dev-texlive/texlive-latex
+		dev-texlive/texlive-latexextra
+		media-gfx/imagemagick
+	)
+	dev-libs/tinyxml2
+	"
+RDEPEND="${CDEPEND}"
+
+REQUIRED_USE="
+	|| ( single-precision double-precision )
+	cuda? ( single-precision )
+	mkl? ( !blas !fftw !lapack )"
+
+DOCS=( AUTHORS README )
+
+if [[ ${PV} != *9999 ]]; then
+	S="${WORKDIR}/${PN}-${PV/_/-}"
+fi
+
+pkg_pretend() {
+	[[ $(gcc-version) == "4.1" ]] && die "gcc 4.1 is not supported by gromacs"
+	use openmp && ! tc-has-openmp && \
+		die "Please switch to an openmp compatible compiler"
+}
+
+src_unpack() {
+	if [[ ${PV} != *9999 ]]; then
+		default
+	else
+		git-r3_src_unpack
+		if use test; then
+			EGIT_REPO_URI="git://git.gromacs.org/regressiontests.git" \
+			EGIT_BRANCH="${EGIT_BRANCH}" \
+			EGIT_CHECKOUT_DIR="${WORKDIR}/regressiontests"\
+				git-r3_src_unpack
+		fi
+	fi
+}
+
+src_prepare() {
+	#notes/todos
+	# -on apple: there is framework support
+
+	xdg_environment_reset #591952
+
+	cmake-utils_src_prepare
+
+	use cuda && cuda_src_prepare
+
+	GMX_DIRS=""
+	use single-precision && GMX_DIRS+=" float"
+	use double-precision && GMX_DIRS+=" double"
+
+	if use test; then
+		for x in ${GMX_DIRS}; do
+			mkdir -p "${WORKDIR}/${P}_${x}" || die
+			cp -al "${WORKDIR}/regressiontests"* "${WORKDIR}/${P}_${x}/tests" || die
+		done
+	fi
+
+	DOC_CONTENTS="Gromacs can use sci-chemistry/vmd to read additional file formats"
+}
+
+src_configure() {
+	local mycmakeargs_pre=( ) extra fft_opts=( )
+
+	#go from slowest to fastest acceleration
+	local acce="None"
+	use cpu_flags_x86_sse2 && acce="SSE2"
+	use cpu_flags_x86_sse4_1 && acce="SSE4.1"
+	use cpu_flags_x86_fma4 && acce="AVX_128_FMA"
+	use cpu_flags_x86_avx && acce="AVX_256"
+	use cpu_flags_x86_avx2 && acce="AVX2_256"
+
+	#to create man pages, build tree binaries are executed (bug #398437)
+	[[ ${CHOST} = *-darwin* ]] && \
+		extra+=" -DCMAKE_BUILD_WITH_INSTALL_RPATH=OFF"
+
+	if use fftw; then
+		fft_opts=( -DGMX_FFT_LIBRARY=fftw3 )
+	elif use mkl && has_version "=sci-libs/mkl-10*"; then
+		fft_opts=( -DGMX_FFT_LIBRARY=mkl
+			-DMKL_INCLUDE_DIR="${MKLROOT}/include"
+			-DMKL_LIBRARIES="$(echo /opt/intel/mkl/10.0.5.025/lib/*/libmkl.so);$(echo /opt/intel/mkl/10.0.5.025/lib/*/libiomp*.so)"
+		)
+	elif use mkl && has_version "<sci-libs/mkl-11.3"; then
+		local bits=$(get_libdir)
+		fft_opts=( -DGMX_FFT_LIBRARY=mkl
+			-DMKL_INCLUDE_DIR="$(echo /opt/intel/*/mkl/include)"
+			-DMKL_LIBRARIES="$(echo /opt/intel/*/mkl/lib/*${bits/lib}/libmkl_rt.so)"
+		)
+	elif use mkl; then
+		local bits=$(get_libdir)
+		fft_opts=( -DGMX_FFT_LIBRARY=mkl
+			-DMKL_INCLUDE_DIR="$(echo /opt/intel/*/linux/mkl/include)"
+			-DMKL_LIBRARIES="$(echo /opt/intel/*/linux/mkl/lib/*${bits/lib}/libmkl_rt.so)"
+		)
+	else
+		fft_opts=( -DGMX_FFT_LIBRARY=fftpack )
+	fi
+
+	mycmakeargs_pre+=(
+		"${fft_opts[@]}"
+		-DGMX_X11=$(usex X)
+		-DGMX_EXTERNAL_BLAS=$(usex blas)
+		-DGMX_EXTERNAL_LAPACK=$(usex lapack)
+		-DGMX_OPENMP=$(usex openmp)
+		-DGMX_COOL_QUOTES=$(usex offensive)
+		-DGMX_USE_TNG=$(usex tng)
+		-DGMX_BUILD_MANUAL=$(usex doc)
+		-DGMX_HWLOC=$(usex hwloc)
+		-DGMX_DEFAULT_SUFFIX=off
+		-DGMX_SIMD="$acce"
+		-DGMX_LIB_INSTALL_DIR="$(get_libdir)"
+		-DGMX_VMD_PLUGIN_PATH="${EPREFIX}/usr/$(get_libdir)/vmd/plugins/*/molfile/"
+		-DBUILD_TESTING=OFF
+		-DGMX_BUILD_UNITTESTS=OFF
+		-DGMX_EXTERNAL_TINYXML2=ON
+		${extra}
+	)
+
+	for x in ${GMX_DIRS}; do
+		einfo "Configuring for ${x} precision"
+		local suffix=""
+		#if we build single and double - double is suffixed
+		use double-precision && use single-precision && \
+			[[ ${x} = "double" ]] && suffix="_d"
+		local p
+		[[ ${x} = "double" ]] && p="-DGMX_DOUBLE=ON" || p="-DGMX_DOUBLE=OFF"
+		local cuda=( "-DGMX_GPU=OFF" )
+		[[ ${x} = "float" ]] && use cuda && \
+			cuda=( -DGMX_GPU=ON )
+		mycmakeargs=(
+			${mycmakeargs_pre[@]} ${p}
+			-DGMX_MPI=OFF
+			-DGMX_THREAD_MPI=$(usex threads)
+			"${cuda[@]}"
+			"$(use test && echo -DREGRESSIONTEST_PATH="${WORKDIR}/${P}_${x}/tests")"
+			-DGMX_BINARY_SUFFIX="${suffix}"
+			-DGMX_LIBS_SUFFIX="${suffix}"
+			)
+		BUILD_DIR="${WORKDIR}/${P}_${x}" cmake-utils_src_configure
+		[[ ${CHOST} != *-darwin* ]] || \
+		  sed -i '/SET(CMAKE_INSTALL_NAME_DIR/s/^/#/' "${WORKDIR}/${P}_${x}/gentoo_rules.cmake" || die
+		use mpi || continue
+		einfo "Configuring for ${x} precision with mpi"
+		mycmakeargs=(
+			${mycmakeargs_pre[@]} ${p}
+			-DGMX_THREAD_MPI=OFF
+			-DGMX_MPI=ON ${cuda}
+			-DGMX_OPENMM=OFF
+			-DGMX_BUILD_MDRUN_ONLY=ON
+			-DBUILD_SHARED_LIBS=OFF
+			-DGMX_BUILD_MANUAL=OFF
+			-DGMX_BINARY_SUFFIX="_mpi${suffix}"
+			-DGMX_LIBS_SUFFIX="_mpi${suffix}"
+			)
+		BUILD_DIR="${WORKDIR}/${P}_${x}_mpi" CC="mpicc" cmake-utils_src_configure
+		[[ ${CHOST} != *-darwin* ]] || \
+		  sed -i '/SET(CMAKE_INSTALL_NAME_DIR/s/^/#/' "${WORKDIR}/${P}_${x}_mpi/gentoo_rules.cmake" || die
+	done
+}
+
+src_compile() {
+	for x in ${GMX_DIRS}; do
+		einfo "Compiling for ${x} precision"
+		BUILD_DIR="${WORKDIR}/${P}_${x}"\
+			cmake-utils_src_compile
+		# not 100% necessary for rel ebuilds as available from website
+		if use doc; then
+			BUILD_DIR="${WORKDIR}/${P}_${x}"\
+				cmake-utils_src_compile manual
+		fi
+		use mpi || continue
+		einfo "Compiling for ${x} precision with mpi"
+		BUILD_DIR="${WORKDIR}/${P}_${x}_mpi"\
+			cmake-utils_src_compile
+	done
+}
+
+src_test() {
+	for x in ${GMX_DIRS}; do
+		BUILD_DIR="${WORKDIR}/${P}_${x}"\
+			cmake-utils_src_make check
+	done
+}
+
+src_install() {
+	for x in ${GMX_DIRS}; do
+		BUILD_DIR="${WORKDIR}/${P}_${x}" \
+			cmake-utils_src_install
+		if use doc; then
+			newdoc "${WORKDIR}/${P}_${x}"/docs/manual/gromacs.pdf "${PN}-manual-${PV}.pdf"
+		fi
+		use mpi || continue
+		BUILD_DIR="${WORKDIR}/${P}_${x}_mpi" \
+			cmake-utils_src_install
+	done
+
+	if use tng; then
+		insinto /usr/include/tng
+		doins src/external/tng_io/include/tng/*h
+	fi
+	# drop unneeded stuff
+	rm "${ED}"usr/bin/GMXRC* || die
+	for x in "${ED}"usr/bin/gmx-completion-*.bash ; do
+		local n=${x##*/gmx-completion-}
+		n="${n%.bash}"
+		cat "${ED}"usr/bin/gmx-completion.bash "$x" > "${T}/${n}" || die
+		newbashcomp "${T}"/"${n}" "${n}"
+	done
+	rm "${ED}"usr/bin/gmx-completion*.bash || die
+	readme.gentoo_create_doc
+}
+
+pkg_postinst() {
+	einfo
+	einfo  "Please read and cite:"
+	einfo  "Gromacs 4, J. Chem. Theory Comput. 4, 435 (2008). "
+	einfo  "https://dx.doi.org/10.1021/ct700301q"
+	einfo
+	readme.gentoo_print_elog
+}
diff --git a/sci-chemistry/gromacs/gromacs-2016.9999.ebuild b/sci-chemistry/gromacs/gromacs-2016.9999.ebuild
new file mode 100644
index 000000000000..7e426ddfdf5a
--- /dev/null
+++ b/sci-chemistry/gromacs/gromacs-2016.9999.ebuild
@@ -0,0 +1,276 @@
+# Copyright 1999-2017 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=6
+
+CMAKE_MAKEFILE_GENERATOR="ninja"
+
+inherit bash-completion-r1 cmake-utils cuda eutils multilib readme.gentoo-r1 toolchain-funcs xdg-utils
+
+if [[ $PV = *9999* ]]; then
+	EGIT_REPO_URI="git://git.gromacs.org/gromacs.git
+		https://gerrit.gromacs.org/gromacs.git
+		https://github.com/gromacs/gromacs.git
+		http://repo.or.cz/r/gromacs.git"
+	[[ $PV = 9999 ]] && EGIT_BRANCH="master" || EGIT_BRANCH="release-${PV:0:4}"
+	inherit git-r3
+	KEYWORDS=""
+else
+	SRC_URI="ftp://ftp.gromacs.org/pub/${PN}/${PN}-${PV/_/-}.tar.gz
+		test? ( http://gerrit.gromacs.org/download/regressiontests-${PV/_/-}.tar.gz )"
+	KEYWORDS="~amd64 ~arm ~x86 ~amd64-linux ~x86-linux ~x64-macos ~x86-macos"
+fi
+
+ACCE_IUSE="cpu_flags_x86_sse2 cpu_flags_x86_sse4_1 cpu_flags_x86_fma4 cpu_flags_x86_avx cpu_flags_x86_avx2"
+
+DESCRIPTION="The ultimate molecular dynamics simulation package"
+HOMEPAGE="http://www.gromacs.org/"
+
+# see COPYING for details
+# http://repo.or.cz/w/gromacs.git/blob/HEAD:/COPYING
+#        base,    vmd plugins, fftpack from numpy,  blas/lapck from netlib,        memtestG80 library,  mpi_thread lib
+LICENSE="LGPL-2.1 UoI-NCSA !mkl? ( !fftw? ( BSD ) !blas? ( BSD ) !lapack? ( BSD ) ) cuda? ( LGPL-3 ) threads? ( BSD )"
+SLOT="0/${PV}"
+IUSE="X blas cuda +doc -double-precision +fftw +hwloc lapack mkl mpi +offensive openmp +single-precision test +threads +tng ${ACCE_IUSE}"
+
+CDEPEND="
+	X? (
+		x11-libs/libX11
+		x11-libs/libSM
+		x11-libs/libICE
+		)
+	blas? ( virtual/blas )
+	cuda? ( >=dev-util/nvidia-cuda-toolkit-4.2.9-r1 )
+	fftw? ( sci-libs/fftw:3.0 )
+	hwloc? ( sys-apps/hwloc )
+	lapack? ( virtual/lapack )
+	mkl? ( sci-libs/mkl )
+	mpi? ( virtual/mpi )
+	"
+DEPEND="${CDEPEND}
+	virtual/pkgconfig
+	doc? (
+		app-doc/doxygen
+		dev-texlive/texlive-latex
+		dev-texlive/texlive-latexextra
+		media-gfx/imagemagick
+	)
+	dev-libs/tinyxml2
+	"
+RDEPEND="${CDEPEND}"
+
+REQUIRED_USE="
+	|| ( single-precision double-precision )
+	cuda? ( single-precision )
+	mkl? ( !blas !fftw !lapack )"
+
+DOCS=( AUTHORS README )
+
+if [[ ${PV} != *9999 ]]; then
+	S="${WORKDIR}/${PN}-${PV/_/-}"
+fi
+
+pkg_pretend() {
+	[[ $(gcc-version) == "4.1" ]] && die "gcc 4.1 is not supported by gromacs"
+	use openmp && ! tc-has-openmp && \
+		die "Please switch to an openmp compatible compiler"
+}
+
+src_unpack() {
+	if [[ ${PV} != *9999 ]]; then
+		default
+	else
+		git-r3_src_unpack
+		if use test; then
+			EGIT_REPO_URI="git://git.gromacs.org/regressiontests.git" \
+			EGIT_BRANCH="${EGIT_BRANCH}" \
+			EGIT_CHECKOUT_DIR="${WORKDIR}/regressiontests"\
+				git-r3_src_unpack
+		fi
+	fi
+}
+
+src_prepare() {
+	#notes/todos
+	# -on apple: there is framework support
+
+	xdg_environment_reset #591952
+
+	cmake-utils_src_prepare
+
+	use cuda && cuda_src_prepare
+
+	GMX_DIRS=""
+	use single-precision && GMX_DIRS+=" float"
+	use double-precision && GMX_DIRS+=" double"
+
+	if use test; then
+		for x in ${GMX_DIRS}; do
+			mkdir -p "${WORKDIR}/${P}_${x}" || die
+			cp -al "${WORKDIR}/regressiontests"* "${WORKDIR}/${P}_${x}/tests" || die
+		done
+	fi
+
+	DOC_CONTENTS="Gromacs can use sci-chemistry/vmd to read additional file formats"
+}
+
+src_configure() {
+	local mycmakeargs_pre=( ) extra fft_opts=( )
+
+	#go from slowest to fastest acceleration
+	local acce="None"
+	use cpu_flags_x86_sse2 && acce="SSE2"
+	use cpu_flags_x86_sse4_1 && acce="SSE4.1"
+	use cpu_flags_x86_fma4 && acce="AVX_128_FMA"
+	use cpu_flags_x86_avx && acce="AVX_256"
+	use cpu_flags_x86_avx2 && acce="AVX2_256"
+
+	#to create man pages, build tree binaries are executed (bug #398437)
+	[[ ${CHOST} = *-darwin* ]] && \
+		extra+=" -DCMAKE_BUILD_WITH_INSTALL_RPATH=OFF"
+
+	if use fftw; then
+		fft_opts=( -DGMX_FFT_LIBRARY=fftw3 )
+	elif use mkl && has_version "=sci-libs/mkl-10*"; then
+		fft_opts=( -DGMX_FFT_LIBRARY=mkl
+			-DMKL_INCLUDE_DIR="${MKLROOT}/include"
+			-DMKL_LIBRARIES="$(echo /opt/intel/mkl/10.0.5.025/lib/*/libmkl.so);$(echo /opt/intel/mkl/10.0.5.025/lib/*/libiomp*.so)"
+		)
+	elif use mkl && has_version "<sci-libs/mkl-11.3"; then
+		local bits=$(get_libdir)
+		fft_opts=( -DGMX_FFT_LIBRARY=mkl
+			-DMKL_INCLUDE_DIR="$(echo /opt/intel/*/mkl/include)"
+			-DMKL_LIBRARIES="$(echo /opt/intel/*/mkl/lib/*${bits/lib}/libmkl_rt.so)"
+		)
+	elif use mkl; then
+		local bits=$(get_libdir)
+		fft_opts=( -DGMX_FFT_LIBRARY=mkl
+			-DMKL_INCLUDE_DIR="$(echo /opt/intel/*/linux/mkl/include)"
+			-DMKL_LIBRARIES="$(echo /opt/intel/*/linux/mkl/lib/*${bits/lib}/libmkl_rt.so)"
+		)
+	else
+		fft_opts=( -DGMX_FFT_LIBRARY=fftpack )
+	fi
+
+	mycmakeargs_pre+=(
+		"${fft_opts[@]}"
+		-DGMX_X11=$(usex X)
+		-DGMX_EXTERNAL_BLAS=$(usex blas)
+		-DGMX_EXTERNAL_LAPACK=$(usex lapack)
+		-DGMX_OPENMP=$(usex openmp)
+		-DGMX_COOL_QUOTES=$(usex offensive)
+		-DGMX_USE_TNG=$(usex tng)
+		-DGMX_BUILD_MANUAL=$(usex doc)
+		-DGMX_HWLOC=$(usex hwloc)
+		-DGMX_DEFAULT_SUFFIX=off
+		-DGMX_SIMD="$acce"
+		-DGMX_LIB_INSTALL_DIR="$(get_libdir)"
+		-DGMX_VMD_PLUGIN_PATH="${EPREFIX}/usr/$(get_libdir)/vmd/plugins/*/molfile/"
+		-DBUILD_TESTING=OFF
+		-DGMX_BUILD_UNITTESTS=OFF
+		-DGMX_EXTERNAL_TINYXML2=ON
+		${extra}
+	)
+
+	for x in ${GMX_DIRS}; do
+		einfo "Configuring for ${x} precision"
+		local suffix=""
+		#if we build single and double - double is suffixed
+		use double-precision && use single-precision && \
+			[[ ${x} = "double" ]] && suffix="_d"
+		local p
+		[[ ${x} = "double" ]] && p="-DGMX_DOUBLE=ON" || p="-DGMX_DOUBLE=OFF"
+		local cuda=( "-DGMX_GPU=OFF" )
+		[[ ${x} = "float" ]] && use cuda && \
+			cuda=( -DGMX_GPU=ON )
+		mycmakeargs=(
+			${mycmakeargs_pre[@]} ${p}
+			-DGMX_MPI=OFF
+			-DGMX_THREAD_MPI=$(usex threads)
+			"${cuda[@]}"
+			"$(use test && echo -DREGRESSIONTEST_PATH="${WORKDIR}/${P}_${x}/tests")"
+			-DGMX_BINARY_SUFFIX="${suffix}"
+			-DGMX_LIBS_SUFFIX="${suffix}"
+			)
+		BUILD_DIR="${WORKDIR}/${P}_${x}" cmake-utils_src_configure
+		[[ ${CHOST} != *-darwin* ]] || \
+		  sed -i '/SET(CMAKE_INSTALL_NAME_DIR/s/^/#/' "${WORKDIR}/${P}_${x}/gentoo_rules.cmake" || die
+		use mpi || continue
+		einfo "Configuring for ${x} precision with mpi"
+		mycmakeargs=(
+			${mycmakeargs_pre[@]} ${p}
+			-DGMX_THREAD_MPI=OFF
+			-DGMX_MPI=ON ${cuda}
+			-DGMX_OPENMM=OFF
+			-DGMX_BUILD_MDRUN_ONLY=ON
+			-DBUILD_SHARED_LIBS=OFF
+			-DGMX_BUILD_MANUAL=OFF
+			-DGMX_BINARY_SUFFIX="_mpi${suffix}"
+			-DGMX_LIBS_SUFFIX="_mpi${suffix}"
+			)
+		BUILD_DIR="${WORKDIR}/${P}_${x}_mpi" CC="mpicc" cmake-utils_src_configure
+		[[ ${CHOST} != *-darwin* ]] || \
+		  sed -i '/SET(CMAKE_INSTALL_NAME_DIR/s/^/#/' "${WORKDIR}/${P}_${x}_mpi/gentoo_rules.cmake" || die
+	done
+}
+
+src_compile() {
+	for x in ${GMX_DIRS}; do
+		einfo "Compiling for ${x} precision"
+		BUILD_DIR="${WORKDIR}/${P}_${x}"\
+			cmake-utils_src_compile
+		# not 100% necessary for rel ebuilds as available from website
+		if use doc; then
+			BUILD_DIR="${WORKDIR}/${P}_${x}"\
+				cmake-utils_src_compile manual
+		fi
+		use mpi || continue
+		einfo "Compiling for ${x} precision with mpi"
+		BUILD_DIR="${WORKDIR}/${P}_${x}_mpi"\
+			cmake-utils_src_compile
+	done
+}
+
+src_test() {
+	for x in ${GMX_DIRS}; do
+		BUILD_DIR="${WORKDIR}/${P}_${x}"\
+			cmake-utils_src_make check
+	done
+}
+
+src_install() {
+	for x in ${GMX_DIRS}; do
+		BUILD_DIR="${WORKDIR}/${P}_${x}" \
+			cmake-utils_src_install
+		if use doc; then
+			newdoc "${WORKDIR}/${P}_${x}"/docs/manual/gromacs.pdf "${PN}-manual-${PV}.pdf"
+		fi
+		use mpi || continue
+		BUILD_DIR="${WORKDIR}/${P}_${x}_mpi" \
+			cmake-utils_src_install
+	done
+
+	if use tng; then
+		insinto /usr/include/tng
+		doins src/external/tng_io/include/tng/*h
+	fi
+	# drop unneeded stuff
+	rm "${ED}"usr/bin/GMXRC* || die
+	for x in "${ED}"usr/bin/gmx-completion-*.bash ; do
+		local n=${x##*/gmx-completion-}
+		n="${n%.bash}"
+		cat "${ED}"usr/bin/gmx-completion.bash "$x" > "${T}/${n}" || die
+		newbashcomp "${T}"/"${n}" "${n}"
+	done
+	rm "${ED}"usr/bin/gmx-completion*.bash || die
+	readme.gentoo_create_doc
+}
+
+pkg_postinst() {
+	einfo
+	einfo  "Please read and cite:"
+	einfo  "Gromacs 4, J. Chem. Theory Comput. 4, 435 (2008). "
+	einfo  "https://dx.doi.org/10.1021/ct700301q"
+	einfo
+	readme.gentoo_print_elog
+}
diff --git a/sci-chemistry/gromacs/gromacs-2016.ebuild b/sci-chemistry/gromacs/gromacs-2016.ebuild
new file mode 100644
index 000000000000..84f5c56a6aae
--- /dev/null
+++ b/sci-chemistry/gromacs/gromacs-2016.ebuild
@@ -0,0 +1,273 @@
+# Copyright 1999-2017 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=6
+
+CMAKE_MAKEFILE_GENERATOR="ninja"
+
+inherit bash-completion-r1 cmake-utils cuda eutils multilib readme.gentoo-r1 toolchain-funcs xdg-utils
+
+if [[ $PV = *9999* ]]; then
+	EGIT_REPO_URI="git://git.gromacs.org/gromacs.git
+		https://gerrit.gromacs.org/gromacs.git
+		https://github.com/gromacs/gromacs.git
+		http://repo.or.cz/r/gromacs.git"
+	[[ $PV = 9999 ]] && EGIT_BRANCH="master" || EGIT_BRANCH="release-${PV:0:1}-${PV:2:1}"
+	inherit git-r3
+	KEYWORDS=""
+else
+	SRC_URI="ftp://ftp.gromacs.org/pub/${PN}/${PN}-${PV/_/-}.tar.gz
+		test? ( http://gerrit.gromacs.org/download/regressiontests-${PV/_/-}.tar.gz )"
+	KEYWORDS="~alpha ~amd64 ~arm ~ppc64 ~sparc ~x86 ~amd64-linux ~x86-linux ~x64-macos ~x86-macos"
+fi
+
+ACCE_IUSE="cpu_flags_x86_sse2 cpu_flags_x86_sse4_1 cpu_flags_x86_fma4 cpu_flags_x86_avx cpu_flags_x86_avx2"
+
+DESCRIPTION="The ultimate molecular dynamics simulation package"
+HOMEPAGE="http://www.gromacs.org/"
+
+# see COPYING for details
+# http://repo.or.cz/w/gromacs.git/blob/HEAD:/COPYING
+#        base,    vmd plugins, fftpack from numpy,  blas/lapck from netlib,        memtestG80 library,  mpi_thread lib
+LICENSE="LGPL-2.1 UoI-NCSA !mkl? ( !fftw? ( BSD ) !blas? ( BSD ) !lapack? ( BSD ) ) cuda? ( LGPL-3 ) threads? ( BSD )"
+SLOT="0/${PV}"
+IUSE="X blas cuda +doc -double-precision +fftw +hwloc lapack mkl mpi +offensive openmp +single-precision test +threads +tng ${ACCE_IUSE}"
+
+CDEPEND="
+	X? (
+		x11-libs/libX11
+		x11-libs/libSM
+		x11-libs/libICE
+		)
+	blas? ( virtual/blas )
+	cuda? ( >=dev-util/nvidia-cuda-toolkit-4.2.9-r1 )
+	fftw? ( sci-libs/fftw:3.0 )
+	hwloc? ( sys-apps/hwloc )
+	lapack? ( virtual/lapack )
+	mkl? ( sci-libs/mkl )
+	mpi? ( virtual/mpi )
+	"
+DEPEND="${CDEPEND}
+	virtual/pkgconfig
+	doc? (
+		app-doc/doxygen
+		dev-texlive/texlive-latex
+		dev-texlive/texlive-latexextra
+		media-gfx/imagemagick
+	)"
+RDEPEND="${CDEPEND}"
+
+REQUIRED_USE="
+	|| ( single-precision double-precision )
+	cuda? ( single-precision )
+	mkl? ( !blas !fftw !lapack )"
+
+DOCS=( AUTHORS README )
+
+if [[ ${PV} != *9999 ]]; then
+	S="${WORKDIR}/${PN}-${PV/_/-}"
+fi
+
+pkg_pretend() {
+	[[ $(gcc-version) == "4.1" ]] && die "gcc 4.1 is not supported by gromacs"
+	use openmp && ! tc-has-openmp && \
+		die "Please switch to an openmp compatible compiler"
+}
+
+src_unpack() {
+	if [[ ${PV} != *9999 ]]; then
+		default
+	else
+		git-r3_src_unpack
+		if use test; then
+			EGIT_REPO_URI="git://git.gromacs.org/regressiontests.git" \
+			EGIT_BRANCH="${EGIT_BRANCH}" \
+			EGIT_CHECKOUT_DIR="${WORKDIR}/regressiontests"\
+				git-r3_src_unpack
+		fi
+	fi
+}
+
+src_prepare() {
+	#notes/todos
+	# -on apple: there is framework support
+
+	xdg_environment_reset #591952
+
+	cmake-utils_src_prepare
+
+	use cuda && cuda_src_prepare
+
+	GMX_DIRS=""
+	use single-precision && GMX_DIRS+=" float"
+	use double-precision && GMX_DIRS+=" double"
+
+	if use test; then
+		for x in ${GMX_DIRS}; do
+			mkdir -p "${WORKDIR}/${P}_${x}" || die
+			cp -al "${WORKDIR}/regressiontests"* "${WORKDIR}/${P}_${x}/tests" || die
+		done
+	fi
+
+	DOC_CONTENTS="Gromacs can use sci-chemistry/vmd to read additional file formats"
+}
+
+src_configure() {
+	local mycmakeargs_pre=( ) extra fft_opts=( )
+
+	#go from slowest to fastest acceleration
+	local acce="None"
+	use cpu_flags_x86_sse2 && acce="SSE2"
+	use cpu_flags_x86_sse4_1 && acce="SSE4.1"
+	use cpu_flags_x86_fma4 && acce="AVX_128_FMA"
+	use cpu_flags_x86_avx && acce="AVX_256"
+	use cpu_flags_x86_avx2 && acce="AVX2_256"
+
+	#to create man pages, build tree binaries are executed (bug #398437)
+	[[ ${CHOST} = *-darwin* ]] && \
+		extra+=" -DCMAKE_BUILD_WITH_INSTALL_RPATH=OFF"
+
+	if use fftw; then
+		fft_opts=( -DGMX_FFT_LIBRARY=fftw3 )
+	elif use mkl && has_version "=sci-libs/mkl-10*"; then
+		fft_opts=( -DGMX_FFT_LIBRARY=mkl
+			-DMKL_INCLUDE_DIR="${MKLROOT}/include"
+			-DMKL_LIBRARIES="$(echo /opt/intel/mkl/10.0.5.025/lib/*/libmkl.so);$(echo /opt/intel/mkl/10.0.5.025/lib/*/libiomp*.so)"
+		)
+	elif use mkl && has_version "<sci-libs/mkl-11.3"; then
+		local bits=$(get_libdir)
+		fft_opts=( -DGMX_FFT_LIBRARY=mkl
+			-DMKL_INCLUDE_DIR="$(echo /opt/intel/*/mkl/include)"
+			-DMKL_LIBRARIES="$(echo /opt/intel/*/mkl/lib/*${bits/lib}/libmkl_rt.so)"
+		)
+	elif use mkl; then
+		local bits=$(get_libdir)
+		fft_opts=( -DGMX_FFT_LIBRARY=mkl
+			-DMKL_INCLUDE_DIR="$(echo /opt/intel/*/linux/mkl/include)"
+			-DMKL_LIBRARIES="$(echo /opt/intel/*/linux/mkl/lib/*${bits/lib}/libmkl_rt.so)"
+		)
+	else
+		fft_opts=( -DGMX_FFT_LIBRARY=fftpack )
+	fi
+
+	mycmakeargs_pre+=(
+		"${fft_opts[@]}"
+		-DGMX_X11=$(usex X)
+		-DGMX_EXTERNAL_BLAS=$(usex blas)
+		-DGMX_EXTERNAL_LAPACK=$(usex lapack)
+		-DGMX_OPENMP=$(usex openmp)
+		-DGMX_COOL_QUOTES=$(usex offensive)
+		-DGMX_USE_TNG=$(usex tng)
+		-DGMX_BUILD_MANUAL=$(usex doc)
+		-DGMX_HWLOC=$(usex hwloc)
+		-DGMX_DEFAULT_SUFFIX=off
+		-DGMX_SIMD="$acce"
+		-DGMX_LIB_INSTALL_DIR="$(get_libdir)"
+		-DGMX_VMD_PLUGIN_PATH="${EPREFIX}/usr/$(get_libdir)/vmd/plugins/*/molfile/"
+		-DBUILD_TESTING=OFF
+		-DGMX_BUILD_UNITTESTS=OFF
+		${extra}
+	)
+
+	for x in ${GMX_DIRS}; do
+		einfo "Configuring for ${x} precision"
+		local suffix=""
+		#if we build single and double - double is suffixed
+		use double-precision && use single-precision && \
+			[[ ${x} = "double" ]] && suffix="_d"
+		local p
+		[[ ${x} = "double" ]] && p="-DGMX_DOUBLE=ON" || p="-DGMX_DOUBLE=OFF"
+		local cuda=( "-DGMX_GPU=OFF" )
+		[[ ${x} = "float" ]] && use cuda && \
+			cuda=( -DGMX_GPU=ON )
+		mycmakeargs=(
+			${mycmakeargs_pre[@]} ${p}
+			-DGMX_MPI=OFF
+			-DGMX_THREAD_MPI=$(usex threads)
+			"${cuda[@]}"
+			"$(use test && echo -DREGRESSIONTEST_PATH="${WORKDIR}/${P}_${x}/tests")"
+			-DGMX_BINARY_SUFFIX="${suffix}"
+			-DGMX_LIBS_SUFFIX="${suffix}"
+			)
+		BUILD_DIR="${WORKDIR}/${P}_${x}" cmake-utils_src_configure
+		[[ ${CHOST} != *-darwin* ]] || \
+		  sed -i '/SET(CMAKE_INSTALL_NAME_DIR/s/^/#/' "${WORKDIR}/${P}_${x}/gentoo_rules.cmake" || die
+		use mpi || continue
+		einfo "Configuring for ${x} precision with mpi"
+		mycmakeargs=(
+			${mycmakeargs_pre[@]} ${p}
+			-DGMX_THREAD_MPI=OFF
+			-DGMX_MPI=ON ${cuda}
+			-DGMX_OPENMM=OFF
+			-DGMX_BUILD_MDRUN_ONLY=ON
+			-DBUILD_SHARED_LIBS=OFF
+			-DGMX_BUILD_MANUAL=OFF
+			-DGMX_BINARY_SUFFIX="_mpi${suffix}"
+			-DGMX_LIBS_SUFFIX="_mpi${suffix}"
+			)
+		BUILD_DIR="${WORKDIR}/${P}_${x}_mpi" CC="mpicc" cmake-utils_src_configure
+		[[ ${CHOST} != *-darwin* ]] || \
+		  sed -i '/SET(CMAKE_INSTALL_NAME_DIR/s/^/#/' "${WORKDIR}/${P}_${x}_mpi/gentoo_rules.cmake" || die
+	done
+}
+
+src_compile() {
+	for x in ${GMX_DIRS}; do
+		einfo "Compiling for ${x} precision"
+		BUILD_DIR="${WORKDIR}/${P}_${x}"\
+			cmake-utils_src_compile
+		# not 100% necessary for rel ebuilds as available from website
+		if use doc; then
+			BUILD_DIR="${WORKDIR}/${P}_${x}"\
+				cmake-utils_src_compile manual
+		fi
+		use mpi || continue
+		einfo "Compiling for ${x} precision with mpi"
+		BUILD_DIR="${WORKDIR}/${P}_${x}_mpi"\
+			cmake-utils_src_compile
+	done
+}
+
+src_test() {
+	for x in ${GMX_DIRS}; do
+		BUILD_DIR="${WORKDIR}/${P}_${x}"\
+			cmake-utils_src_make check
+	done
+}
+
+src_install() {
+	for x in ${GMX_DIRS}; do
+		BUILD_DIR="${WORKDIR}/${P}_${x}" \
+			cmake-utils_src_install
+		if use doc; then
+			newdoc "${WORKDIR}/${P}_${x}"/docs/manual/gromacs.pdf "${PN}-manual-${PV}.pdf"
+		fi
+		use mpi || continue
+		BUILD_DIR="${WORKDIR}/${P}_${x}_mpi" \
+			cmake-utils_src_install
+	done
+
+	if use tng; then
+		insinto /usr/include/tng
+		doins src/external/tng_io/include/tng/*h
+	fi
+	# drop unneeded stuff
+	rm "${ED}"usr/bin/GMXRC* || die
+	for x in "${ED}"usr/bin/gmx-completion-*.bash ; do
+		local n=${x##*/gmx-completion-}
+		n="${n%.bash}"
+		cat "${ED}"usr/bin/gmx-completion.bash "$x" > "${T}/${n}" || die
+		newbashcomp "${T}"/"${n}" "${n}"
+	done
+	rm "${ED}"usr/bin/gmx-completion*.bash || die
+	readme.gentoo_create_doc
+}
+
+pkg_postinst() {
+	einfo
+	einfo  "Please read and cite:"
+	einfo  "Gromacs 4, J. Chem. Theory Comput. 4, 435 (2008). "
+	einfo  "https://dx.doi.org/10.1021/ct700301q"
+	einfo
+	readme.gentoo_print_elog
+}
diff --git a/sci-chemistry/gromacs/gromacs-4.6.9999.ebuild b/sci-chemistry/gromacs/gromacs-4.6.9999.ebuild
new file mode 100644
index 000000000000..082685525590
--- /dev/null
+++ b/sci-chemistry/gromacs/gromacs-4.6.9999.ebuild
@@ -0,0 +1,262 @@
+# Copyright 1999-2017 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=6
+
+TEST_PV="4.6.6"
+MANUAL_PV="4.6.6"
+
+CMAKE_MAKEFILE_GENERATOR="ninja"
+
+inherit bash-completion-r1 cmake-utils cuda eutils multilib readme.gentoo-r1 toolchain-funcs
+
+if [[ $PV = *9999* ]]; then
+	EGIT_REPO_URI="git://git.gromacs.org/gromacs.git
+		https://gerrit.gromacs.org/gromacs.git
+		https://github.com/gromacs/gromacs.git
+		http://repo.or.cz/r/gromacs.git"
+	EGIT_BRANCH="release-4-6"
+	inherit git-r3
+	LIVE_DEPEND="doc? (
+		app-doc/doxygen
+		dev-texlive/texlive-latex
+		dev-texlive/texlive-latexextra
+		media-gfx/imagemagick
+		sys-apps/coreutils
+	)"
+	KEYWORDS=""
+else
+	SRC_URI="ftp://ftp.gromacs.org/pub/${PN}/${P}.tar.gz
+		doc? ( ftp://ftp.gromacs.org/pub/manual/manual-${MANUAL_PV}.pdf -> ${PN}-manual-${MANUAL_PV}.pdf )
+		test? ( http://gerrit.gromacs.org/download/regressiontests-${TEST_PV}.tar.gz )"
+	LIVE_DEPEND=""
+	KEYWORDS="~alpha ~amd64 ~arm ~ppc64 ~sparc ~x86 ~amd64-linux ~x86-linux ~x86-macos"
+fi
+
+ACCE_IUSE="cpu_flags_x86_sse2 cpu_flags_x86_sse4_1 cpu_flags_x86_fma4 cpu_flags_x86_avx"
+
+DESCRIPTION="The ultimate molecular dynamics simulation package"
+HOMEPAGE="http://www.gromacs.org/"
+
+# see COPYING for details
+# http://repo.or.cz/w/gromacs.git/blob/HEAD:/COPYING
+#        base,    vmd plugins, fftpack from numpy,  blas/lapck from netlib,        memtestG80 library,  mpi_thread lib
+LICENSE="LGPL-2.1 UoI-NCSA !mkl? ( !fftw? ( BSD ) !blas? ( BSD ) !lapack? ( BSD ) ) cuda? ( LGPL-3 ) threads? ( BSD )"
+SLOT="0/${PV}"
+IUSE="X blas cuda doc -double-precision +fftw gsl lapack mkl mpi +offensive openmp +single-precision test +threads zsh-completion ${ACCE_IUSE}"
+
+CDEPEND="
+	X? (
+		x11-libs/libX11
+		x11-libs/libSM
+		x11-libs/libICE
+		)
+	blas? ( virtual/blas )
+	cuda? ( >=dev-util/nvidia-cuda-toolkit-4.2.9-r1 )
+	fftw? ( sci-libs/fftw:3.0 )
+	gsl? ( sci-libs/gsl )
+	lapack? ( virtual/lapack )
+	mkl? ( sci-libs/mkl )
+	mpi? ( virtual/mpi )"
+DEPEND="${CDEPEND}
+	virtual/pkgconfig
+	${LIVE_DEPEND}
+	doc? ( app-doc/doxygen )"
+RDEPEND="${CDEPEND}"
+
+REQUIRED_USE="
+	|| ( single-precision double-precision )
+	cuda? ( single-precision )
+	mkl? ( !blas !fftw !lapack )"
+
+DOCS=( AUTHORS README )
+HTML_DOCS=( "${ED}"/usr/share/gromacs/html/ )
+
+pkg_pretend() {
+	[[ $(gcc-version) == "4.1" ]] && die "gcc 4.1 is not supported by gromacs"
+	use openmp && ! tc-has-openmp && \
+		die "Please switch to an openmp compatible compiler"
+}
+
+src_unpack() {
+	if [[ ${PV} != *9999 ]]; then
+		default
+	else
+		git-r3_src_unpack
+		if use doc; then
+			EGIT_REPO_URI="git://git.gromacs.org/manual.git" \
+			EGIT_BRANCH="release-4-6" EGIT_COMMIT="release-4-6" \
+			EGIT_CHECKOUT_DIR="${WORKDIR}/manual"\
+				git-r3_src_unpack
+		fi
+		if use test; then
+			EGIT_REPO_URI="git://git.gromacs.org/regressiontests.git" \
+			EGIT_BRANCH="release-4-6" EGIT_COMMIT="release-4-6" \
+			EGIT_CHECKOUT_DIR="${WORKDIR}/regressiontests"\
+				git-r3_src_unpack
+		fi
+	fi
+}
+
+src_prepare() {
+	#notes/todos
+	# -on apple: there is framework support
+
+	cmake-utils_src_prepare
+
+	use cuda && cuda_src_prepare
+
+	GMX_DIRS=""
+	use single-precision && GMX_DIRS+=" float"
+	use double-precision && GMX_DIRS+=" double"
+
+	if use test; then
+		for x in ${GMX_DIRS}; do
+			mkdir -p "${WORKDIR}/${P}_${x}" || die
+			cp -al "${WORKDIR}/regressiontests"* "${WORKDIR}/${P}_${x}/tests" || die
+		done
+	fi
+
+	DOC_CONTENTS="Gromacs can use sci-chemistry/vmd to read additional file formats"
+}
+
+src_configure() {
+	local mycmakeargs_pre=( ) extra fft_opts=( )
+
+	#go from slowest to fastest acceleration
+	local acce="None"
+	use cpu_flags_x86_sse2 && acce="SSE2"
+	use cpu_flags_x86_sse4_1 && acce="SSE4.1"
+	use cpu_flags_x86_fma4 && acce="AVX_128_FMA"
+	use cpu_flags_x86_avx && acce="AVX_256"
+
+	#to create man pages, build tree binaries are executed (bug #398437)
+	[[ ${CHOST} = *-darwin* ]] && \
+		extra+=" -DCMAKE_BUILD_WITH_INSTALL_RPATH=OFF"
+
+	if use fftw; then
+		fft_opts=( -DGMX_FFT_LIBRARY=fftw3 )
+	elif use mkl && has_version "=sci-libs/mkl-10*"; then
+		fft_opts=( -DGMX_FFT_LIBRARY=mkl
+			-DMKL_INCLUDE_DIR="${MKLROOT}/include"
+			-DMKL_LIBRARIES="$(echo /opt/intel/mkl/10.0.5.025/lib/*/libmkl.so);$(echo /opt/intel/mkl/10.0.5.025/lib/*/libiomp*.so)"
+		)
+	elif use mkl; then
+		local bits=$(get_libdir)
+		fft_opts=( -DGMX_FFT_LIBRARY=mkl
+			-DMKL_INCLUDE_DIR="$(echo /opt/intel/*/mkl/include)"
+			-DMKL_LIBRARIES="$(echo /opt/intel/*/mkl/lib/*${bits/lib}/libmkl_rt.so)"
+		)
+	else
+		fft_opts=( -DGMX_FFT_LIBRARY=fftpack )
+	fi
+
+	mycmakeargs_pre+=(
+		"${fft_opts[@]}"
+		-DGMX_X11=$(usex X)
+		-DGMX_EXTERNAL_BLAS=$(usex blas)
+		-DGMX_GSL=$(usex gsl)
+		-DGMX_EXTERNAL_LAPACK=$(usex lapack)
+		-DGMX_OPENMP=$(usex openmp)
+		-DGMX_COOL_QUOTES=$(usex offensive)
+		-DGMX_DEFAULT_SUFFIX=off
+		-DGMX_ACCELERATION="$acce"
+		-DGMXLIB="$(get_libdir)"
+		-DGMX_VMD_PLUGIN_PATH="${EPREFIX}/usr/$(get_libdir)/vmd/plugins/*/molfile/"
+		-DGMX_PREFIX_LIBMD=ON
+		-DGMX_X86_AVX_GCC_MASKLOAD_BUG=OFF
+		-DGMX_USE_GCC44_BUG_WORKAROUND=OFF
+		${extra}
+	)
+
+	for x in ${GMX_DIRS}; do
+		einfo "Configuring for ${x} precision"
+		local suffix=""
+		#if we build single and double - double is suffixed
+		use double-precision && use single-precision && \
+			[[ ${x} = "double" ]] && suffix="_d"
+		local p
+		[[ ${x} = "double" ]] && p="-DGMX_DOUBLE=ON" || p="-DGMX_DOUBLE=OFF"
+		local cuda=( "-DGMX_GPU=OFF" )
+		[[ ${x} = "float" ]] && use cuda && \
+			cuda=( -DGMX_GPU=ON )
+		mycmakeargs=( ${mycmakeargs_pre[@]} ${p} -DGMX_MPI=OFF
+			-DGMX_THREAD_MPI=$(usex threads) "${cuda[@]}" -DGMX_OPENMM=OFF
+			"$(use test && echo -DREGRESSIONTEST_PATH="${WORKDIR}/${P}_${x}/tests")"
+			-DGMX_BINARY_SUFFIX="${suffix}" -DGMX_LIBS_SUFFIX="${suffix}" )
+		BUILD_DIR="${WORKDIR}/${P}_${x}" cmake-utils_src_configure
+		use mpi || continue
+		einfo "Configuring for ${x} precision with mpi"
+		mycmakeargs=( ${mycmakeargs_pre[@]} ${p} -DGMX_THREAD_MPI=OFF
+			-DGMX_MPI=ON ${cuda} -DGMX_OPENMM=OFF
+			-DGMX_BINARY_SUFFIX="_mpi${suffix}" -DGMX_LIBS_SUFFIX="_mpi${suffix}" )
+		BUILD_DIR="${WORKDIR}/${P}_${x}_mpi" CC="mpicc" cmake-utils_src_configure
+	done
+}
+
+src_compile() {
+	for x in ${GMX_DIRS}; do
+		einfo "Compiling for ${x} precision"
+		BUILD_DIR="${WORKDIR}/${P}_${x}"\
+			cmake-utils_src_compile
+		use mpi || continue
+		einfo "Compiling for ${x} precision with mpi"
+		BUILD_DIR="${WORKDIR}/${P}_${x}_mpi"\
+			cmake-utils_src_compile mdrun
+	done
+}
+
+src_test() {
+	for x in ${GMX_DIRS}; do
+		BUILD_DIR="${WORKDIR}/${P}_${x}"\
+			cmake-utils_src_make check
+	done
+}
+
+src_install() {
+	for x in ${GMX_DIRS}; do
+		BUILD_DIR="${WORKDIR}/${P}_${x}" \
+			cmake-utils_src_install
+		#manual can only be build after gromacs was installed once in image
+		if use doc && [[ $PV = *9999*  && ! -d ${WORKDIR}/manual_build ]]; then
+			mycmakeargs=( -DGMXBIN="${ED}"/usr/bin -DGMXSRC="${WORKDIR}/${P}" )
+			BUILD_DIR="${WORKDIR}"/manual_build \
+				CMAKE_USE_DIR="${WORKDIR}/manual" cmake-utils_src_configure
+			[[ ${CHOST} = *-darwin* ]] && \
+				export DYLD_LIBRARY_PATH="${DYLD_LIBRARY_PATH}${DYLD_LIBRARY_PATH:+:}${ED}/usr/$(get_libdir)"
+			BUILD_DIR="${WORKDIR}"/manual_build cmake-utils_src_make
+			[[ ${CHOST} = *-darwin* ]] && DYLD_LIBRARY_PATH="${ED}/usr/$(get_libdir)"
+			newdoc "${WORKDIR}"/manual_build/gromacs.pdf "${PN}-manual-${PV}.pdf"
+		fi
+		use mpi || continue
+		BUILD_DIR="${WORKDIR}/${P}_${x}_mpi" \
+			DESTDIR="${D}" cmake-utils_src_make install-mdrun
+	done
+
+	use doc && [[ $PV != *9999* ]] && dodoc "${DISTDIR}/${PN}-manual-${MANUAL_PV}.pdf"
+	newbashcomp "${ED}"/usr/bin/completion.bash ${PN}
+	if use zsh-completion ; then
+		insinto /usr/share/zsh/site-functions
+		newins "${ED}"/usr/bin/completion.zsh _${PN}
+	fi
+	rm -f "${ED}"usr/bin/completion.*
+	rm -rf "${ED}"usr/share/gromacs/html
+	rm -f "${ED}"usr/bin/g_options*
+	rm -f "${ED}"usr/bin/GMXRC*
+
+	readme.gentoo_create_doc
+}
+
+pkg_postinst() {
+	einfo
+	einfo  "Please read and cite:"
+	einfo  "Gromacs 4, J. Chem. Theory Comput. 4, 435 (2008). "
+	einfo  "https://dx.doi.org/10.1021/ct700301q"
+	if use offensive; then
+		einfo
+		einfo  $(g_luck)
+		einfo  "For more Gromacs cool quotes (gcq) add g_luck to your .bashrc"
+	fi
+	einfo
+	readme.gentoo_print_elog
+}
diff --git a/sci-chemistry/gromacs/gromacs-5.0.4.ebuild b/sci-chemistry/gromacs/gromacs-5.0.4.ebuild
new file mode 100644
index 000000000000..ac93b9770c1e
--- /dev/null
+++ b/sci-chemistry/gromacs/gromacs-5.0.4.ebuild
@@ -0,0 +1,278 @@
+# Copyright 1999-2017 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=5
+
+CMAKE_MAKEFILE_GENERATOR="ninja"
+
+inherit bash-completion-r1 cmake-utils cuda eutils multilib readme.gentoo toolchain-funcs
+
+if [[ $PV = *9999* ]]; then
+	EGIT_REPO_URI="git://git.gromacs.org/gromacs.git
+		https://gerrit.gromacs.org/gromacs.git
+		https://github.com/gromacs/gromacs.git
+		http://repo.or.cz/r/gromacs.git"
+	EGIT_BRANCH="release-5-0"
+	inherit git-r3
+	KEYWORDS=""
+else
+	SRC_URI="ftp://ftp.gromacs.org/pub/${PN}/${PN}-${PV/_/-}.tar.gz
+		test? ( http://gerrit.gromacs.org/download/regressiontests-${PV}.tar.gz )"
+	KEYWORDS="~alpha amd64 arm ppc64 ~sparc x86 ~amd64-linux ~x86-linux ~x64-macos ~x86-macos"
+fi
+
+ACCE_IUSE="cpu_flags_x86_sse2 cpu_flags_x86_sse4_1 cpu_flags_x86_fma4 cpu_flags_x86_avx cpu_flags_x86_avx2"
+
+DESCRIPTION="The ultimate molecular dynamics simulation package"
+HOMEPAGE="http://www.gromacs.org/"
+
+# see COPYING for details
+# http://repo.or.cz/w/gromacs.git/blob/HEAD:/COPYING
+#        base,    vmd plugins, fftpack from numpy,  blas/lapck from netlib,        memtestG80 library,  mpi_thread lib
+LICENSE="LGPL-2.1 UoI-NCSA !mkl? ( !fftw? ( BSD ) !blas? ( BSD ) !lapack? ( BSD ) ) cuda? ( LGPL-3 ) threads? ( BSD )"
+SLOT="0/${PV}"
+IUSE="X blas boost cuda +doc -double-precision +fftw lapack +make-symlinks mkl mpi +offensive openmp +single-precision test +threads +tng ${ACCE_IUSE}"
+
+CDEPEND="
+	X? (
+		x11-libs/libX11
+		x11-libs/libSM
+		x11-libs/libICE
+		)
+	blas? ( virtual/blas )
+	boost? ( >=dev-libs/boost-1.55 )
+	cuda? ( >=dev-util/nvidia-cuda-toolkit-4.2.9-r1 )
+	fftw? ( sci-libs/fftw:3.0 )
+	lapack? ( virtual/lapack )
+	mkl? ( sci-libs/mkl )
+	mpi? ( virtual/mpi )
+	"
+DEPEND="${CDEPEND}
+	virtual/pkgconfig
+	doc? (
+		app-doc/doxygen
+		dev-texlive/texlive-latex
+		dev-texlive/texlive-latexextra
+		media-gfx/imagemagick
+	)"
+RDEPEND="${CDEPEND}"
+
+REQUIRED_USE="
+	|| ( single-precision double-precision )
+	cuda? ( single-precision )
+	mkl? ( !blas !fftw !lapack )"
+
+DOCS=( AUTHORS README )
+
+if [[ ${PV} != *9999 ]]; then
+	S="${WORKDIR}/${PN}-${PV/_/-}"
+fi
+
+pkg_pretend() {
+	[[ $(gcc-version) == "4.1" ]] && die "gcc 4.1 is not supported by gromacs"
+	use openmp && ! tc-has-openmp && \
+		die "Please switch to an openmp compatible compiler"
+}
+
+src_unpack() {
+	if [[ ${PV} != *9999 ]]; then
+		default
+	else
+		git-r3_src_unpack
+		if use test; then
+			EGIT_REPO_URI="git://git.gromacs.org/regressiontests.git" \
+			EGIT_BRANCH="master" EGIT_COMMIT="master" \
+			EGIT_CHECKOUT_DIR="${WORKDIR}/regressiontests"\
+				git-r3_src_unpack
+		fi
+	fi
+}
+
+src_prepare() {
+	#notes/todos
+	# -on apple: there is framework support
+
+	cmake-utils_src_prepare
+
+	use cuda && cuda_src_prepare
+
+	GMX_DIRS=""
+	use single-precision && GMX_DIRS+=" float"
+	use double-precision && GMX_DIRS+=" double"
+
+	if use test; then
+		for x in ${GMX_DIRS}; do
+			mkdir -p "${WORKDIR}/${P}_${x}" || die
+			cp -al "${WORKDIR}/regressiontests"* "${WORKDIR}/${P}_${x}/tests" || die
+		done
+	fi
+
+	DOC_CONTENTS="Gromacs can use sci-chemistry/vmd to read additional file formats"
+}
+
+src_configure() {
+	local mycmakeargs_pre=( ) extra fft_opts=( )
+
+	#go from slowest to fastest acceleration
+	local acce="None"
+	use cpu_flags_x86_sse2 && acce="SSE2"
+	use cpu_flags_x86_sse4_1 && acce="SSE4.1"
+	use cpu_flags_x86_fma4 && acce="AVX_128_FMA"
+	use cpu_flags_x86_avx && acce="AVX_256"
+	use cpu_flags_x86_avx2 && acce="AVX2_256"
+
+	#to create man pages, build tree binaries are executed (bug #398437)
+	[[ ${CHOST} = *-darwin* ]] && \
+		extra+=" -DCMAKE_BUILD_WITH_INSTALL_RPATH=OFF"
+
+	if use fftw; then
+		fft_opts=( -DGMX_FFT_LIBRARY=fftw3 )
+	elif use mkl && has_version "=sci-libs/mkl-10*"; then
+		fft_opts=( -DGMX_FFT_LIBRARY=mkl
+			-DMKL_INCLUDE_DIR="${MKLROOT}/include"
+			-DMKL_LIBRARIES="$(echo /opt/intel/mkl/10.0.5.025/lib/*/libmkl.so);$(echo /opt/intel/mkl/10.0.5.025/lib/*/libiomp*.so)"
+		)
+	elif use mkl; then
+		local bits=$(get_libdir)
+		fft_opts=( -DGMX_FFT_LIBRARY=mkl
+			-DMKL_INCLUDE_DIR="$(echo /opt/intel/*/mkl/include)"
+			-DMKL_LIBRARIES="$(echo /opt/intel/*/mkl/lib/*${bits/lib}/libmkl_rt.so)"
+		)
+	else
+		fft_opts=( -DGMX_FFT_LIBRARY=fftpack )
+	fi
+
+	mycmakeargs_pre+=(
+		"${fft_opts[@]}"
+		$(cmake-utils_use X GMX_X11)
+		$(cmake-utils_use blas GMX_EXTERNAL_BLAS)
+		$(cmake-utils_use lapack GMX_EXTERNAL_LAPACK)
+		$(cmake-utils_use openmp GMX_OPENMP)
+		$(cmake-utils_use offensive GMX_COOL_QUOTES)
+		$(cmake-utils_use boost GMX_EXTERNAL_BOOST)
+		$(cmake-utils_use tng GMX_USE_TNG)
+		$(cmake-utils_use doc GMX_BUILD_MANUAL)
+		$(cmake-utils_use make-symlinks GMX_SYMLINK_OLD_BINARY_NAMES)
+		-DGMX_DEFAULT_SUFFIX=off
+		-DGMX_SIMD="$acce"
+		-DGMX_LIB_INSTALL_DIR="$(get_libdir)"
+		-DGMX_VMD_PLUGIN_PATH="${EPREFIX}/usr/$(get_libdir)/vmd/plugins/*/molfile/"
+		-DGMX_X86_AVX_GCC_MASKLOAD_BUG=OFF
+		-DGMX_USE_GCC44_BUG_WORKAROUND=OFF
+		-DBUILD_TESTING=OFF
+		-DGMX_BUILD_UNITTESTS=OFF
+		${extra}
+	)
+
+	for x in ${GMX_DIRS}; do
+		einfo "Configuring for ${x} precision"
+		local suffix=""
+		#if we build single and double - double is suffixed
+		use double-precision && use single-precision && \
+			[[ ${x} = "double" ]] && suffix="_d"
+		local p
+		[[ ${x} = "double" ]] && p="-DGMX_DOUBLE=ON" || p="-DGMX_DOUBLE=OFF"
+		local cuda=( "-DGMX_GPU=OFF" )
+		[[ ${x} = "float" ]] && use cuda && \
+			cuda=( -DGMX_GPU=ON )
+		mycmakeargs=(
+			${mycmakeargs_pre[@]} ${p}
+			-DGMX_MPI=OFF
+			$(cmake-utils_use threads GMX_THREAD_MPI)
+			"${cuda[@]}"
+			-DGMX_OPENMM=OFF
+			"$(use test && echo -DREGRESSIONTEST_PATH="${WORKDIR}/${P}_${x}/tests")"
+			-DGMX_BINARY_SUFFIX="${suffix}"
+			-DGMX_LIBS_SUFFIX="${suffix}"
+			)
+		BUILD_DIR="${WORKDIR}/${P}_${x}" cmake-utils_src_configure
+		[[ ${CHOST} != *-darwin* ]] || \
+		  sed -i '/SET(CMAKE_INSTALL_NAME_DIR/s/^/#/' "${WORKDIR}/${P}_${x}/gentoo_rules.cmake" || die
+		use mpi || continue
+		einfo "Configuring for ${x} precision with mpi"
+		mycmakeargs=(
+			${mycmakeargs_pre[@]} ${p}
+			-DGMX_THREAD_MPI=OFF
+			-DGMX_MPI=ON ${cuda}
+			-DGMX_OPENMM=OFF
+			-DGMX_BUILD_MDRUN_ONLY=ON
+			-DBUILD_SHARED_LIBS=OFF
+			-DGMX_BUILD_MANUAL=OFF
+			-DGMX_BINARY_SUFFIX="_mpi${suffix}"
+			-DGMX_LIBS_SUFFIX="_mpi${suffix}"
+			)
+		BUILD_DIR="${WORKDIR}/${P}_${x}_mpi" CC="mpicc" cmake-utils_src_configure
+		[[ ${CHOST} != *-darwin* ]] || \
+		  sed -i '/SET(CMAKE_INSTALL_NAME_DIR/s/^/#/' "${WORKDIR}/${P}_${x}_mpi/gentoo_rules.cmake" || die
+	done
+}
+
+src_compile() {
+	for x in ${GMX_DIRS}; do
+		einfo "Compiling for ${x} precision"
+		BUILD_DIR="${WORKDIR}/${P}_${x}"\
+			cmake-utils_src_compile
+		# generate bash completion, not 100% necessary for
+		# rel ebuilds as bundled
+		BUILD_DIR="${WORKDIR}/${P}_${x}"\
+			cmake-utils_src_compile completion
+		# not 100% necessary for rel ebuilds as available from website
+		if use doc; then
+			BUILD_DIR="${WORKDIR}/${P}_${x}"\
+				cmake-utils_src_compile manual
+		fi
+		use mpi || continue
+		einfo "Compiling for ${x} precision with mpi"
+		BUILD_DIR="${WORKDIR}/${P}_${x}_mpi"\
+			cmake-utils_src_compile
+	done
+}
+
+src_test() {
+	for x in ${GMX_DIRS}; do
+		BUILD_DIR="${WORKDIR}/${P}_${x}"\
+			cmake-utils_src_make check
+	done
+}
+
+src_install() {
+	for x in ${GMX_DIRS}; do
+		BUILD_DIR="${WORKDIR}/${P}_${x}" \
+			cmake-utils_src_install
+		if use doc; then
+			newdoc "${WORKDIR}/${P}_${x}"/docs/manual/gromacs.pdf "${PN}-manual-${PV}.pdf"
+		fi
+		#release ebuild does this automatically
+		if [[ $PV = *9999* ]]; then
+			cp "${WORKDIR}/${P}_${x}"/src/programs/completion/gmx-completion.bash "${ED}/usr/bin" || die
+			echo "complete -o nospace -F _gmx_compl gmx" > "${ED}/usr/bin/gmx-completion-gmx.bash" || die
+		fi
+		use mpi || continue
+		BUILD_DIR="${WORKDIR}/${P}_${x}_mpi" \
+			cmake-utils_src_install
+	done
+	# drop unneeded stuff
+	rm "${ED}"usr/bin/GMXRC* || die
+	#concatenate all gmx-completion*, starting with gmx-completion.bash (fct defs)
+	#little hacckery as some gmx-completion* newlines ,so cat won't work
+	for x in "${ED}"usr/bin/gmx-completion{,?*}.bash ; do
+		echo $(<${x})
+	done > "${T}"/gmx-bashcomp || die
+	newbashcomp "${T}"/gmx-bashcomp gmx
+	bashcomp_alias gmx mdrun
+	rm "${ED}"usr/bin/gmx-completion{,?*}.bash || die
+	if use double-precision && use single-precision; then
+		bashcomp_alias gmx gmx_d
+		bashcomp_alias gmx mdrun_d
+	fi
+	readme.gentoo_create_doc
+}
+
+pkg_postinst() {
+	einfo
+	einfo  "Please read and cite:"
+	einfo  "Gromacs 4, J. Chem. Theory Comput. 4, 435 (2008). "
+	einfo  "https://dx.doi.org/10.1021/ct700301q"
+	einfo
+	readme.gentoo_print_elog
+}
diff --git a/sci-chemistry/gromacs/gromacs-5.0.9999.ebuild b/sci-chemistry/gromacs/gromacs-5.0.9999.ebuild
new file mode 100644
index 000000000000..d417af1167a2
--- /dev/null
+++ b/sci-chemistry/gromacs/gromacs-5.0.9999.ebuild
@@ -0,0 +1,283 @@
+# Copyright 1999-2017 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=6
+
+CMAKE_MAKEFILE_GENERATOR="ninja"
+
+inherit bash-completion-r1 cmake-utils cuda eutils multilib readme.gentoo-r1 toolchain-funcs
+
+if [[ $PV = *9999* ]]; then
+	EGIT_REPO_URI="git://git.gromacs.org/gromacs.git
+		https://gerrit.gromacs.org/gromacs.git
+		https://github.com/gromacs/gromacs.git
+		http://repo.or.cz/r/gromacs.git"
+	EGIT_BRANCH="release-5-0"
+	inherit git-r3
+	KEYWORDS=""
+else
+	SRC_URI="ftp://ftp.gromacs.org/pub/${PN}/${PN}-${PV/_/-}.tar.gz
+		test? ( http://gerrit.gromacs.org/download/regressiontests-${PV}.tar.gz )"
+	KEYWORDS="~alpha ~amd64 ~arm ~ppc64 ~sparc ~x86 ~amd64-linux ~x86-linux ~x64-macos ~x86-macos"
+fi
+
+ACCE_IUSE="cpu_flags_x86_sse2 cpu_flags_x86_sse4_1 cpu_flags_x86_fma4 cpu_flags_x86_avx cpu_flags_x86_avx2"
+
+DESCRIPTION="The ultimate molecular dynamics simulation package"
+HOMEPAGE="http://www.gromacs.org/"
+
+# see COPYING for details
+# http://repo.or.cz/w/gromacs.git/blob/HEAD:/COPYING
+#        base,    vmd plugins, fftpack from numpy,  blas/lapck from netlib,        memtestG80 library,  mpi_thread lib
+LICENSE="LGPL-2.1 UoI-NCSA !mkl? ( !fftw? ( BSD ) !blas? ( BSD ) !lapack? ( BSD ) ) cuda? ( LGPL-3 ) threads? ( BSD )"
+SLOT="0/${PV}"
+IUSE="X blas boost cuda +doc -double-precision +fftw lapack +make-symlinks mkl mpi +offensive openmp +single-precision test +threads +tng ${ACCE_IUSE}"
+
+CDEPEND="
+	X? (
+		x11-libs/libX11
+		x11-libs/libSM
+		x11-libs/libICE
+		)
+	blas? ( virtual/blas )
+	boost? ( >=dev-libs/boost-1.55 )
+	cuda? ( >=dev-util/nvidia-cuda-toolkit-4.2.9-r1 )
+	fftw? ( sci-libs/fftw:3.0 )
+	lapack? ( virtual/lapack )
+	mkl? ( sci-libs/mkl )
+	mpi? ( virtual/mpi )
+	"
+DEPEND="${CDEPEND}
+	virtual/pkgconfig
+	doc? (
+		app-doc/doxygen
+		dev-texlive/texlive-latex
+		dev-texlive/texlive-latexextra
+		media-gfx/imagemagick
+	)"
+RDEPEND="${CDEPEND}"
+
+REQUIRED_USE="
+	|| ( single-precision double-precision )
+	cuda? ( single-precision )
+	mkl? ( !blas !fftw !lapack )"
+
+DOCS=( AUTHORS README )
+
+if [[ ${PV} != *9999 ]]; then
+	S="${WORKDIR}/${PN}-${PV/_/-}"
+fi
+
+pkg_pretend() {
+	[[ $(gcc-version) == "4.1" ]] && die "gcc 4.1 is not supported by gromacs"
+	use openmp && ! tc-has-openmp && \
+		die "Please switch to an openmp compatible compiler"
+}
+
+src_unpack() {
+	if [[ ${PV} != *9999 ]]; then
+		default
+	else
+		git-r3_src_unpack
+		if use test; then
+			EGIT_REPO_URI="git://git.gromacs.org/regressiontests.git" \
+			EGIT_BRANCH="master" EGIT_COMMIT="master" \
+			EGIT_CHECKOUT_DIR="${WORKDIR}/regressiontests"\
+				git-r3_src_unpack
+		fi
+	fi
+}
+
+src_prepare() {
+	#notes/todos
+	# -on apple: there is framework support
+
+	cmake-utils_src_prepare
+
+	use cuda && cuda_src_prepare
+
+	GMX_DIRS=""
+	use single-precision && GMX_DIRS+=" float"
+	use double-precision && GMX_DIRS+=" double"
+
+	if use test; then
+		for x in ${GMX_DIRS}; do
+			mkdir -p "${WORKDIR}/${P}_${x}" || die
+			cp -al "${WORKDIR}/regressiontests"* "${WORKDIR}/${P}_${x}/tests" || die
+		done
+	fi
+
+	DOC_CONTENTS="Gromacs can use sci-chemistry/vmd to read additional file formats"
+}
+
+src_configure() {
+	local mycmakeargs_pre=( ) extra fft_opts=( )
+
+	#go from slowest to fastest acceleration
+	local acce="None"
+	use cpu_flags_x86_sse2 && acce="SSE2"
+	use cpu_flags_x86_sse4_1 && acce="SSE4.1"
+	use cpu_flags_x86_fma4 && acce="AVX_128_FMA"
+	use cpu_flags_x86_avx && acce="AVX_256"
+	use cpu_flags_x86_avx2 && acce="AVX2_256"
+
+	#to create man pages, build tree binaries are executed (bug #398437)
+	[[ ${CHOST} = *-darwin* ]] && \
+		extra+=" -DCMAKE_BUILD_WITH_INSTALL_RPATH=OFF"
+
+	if use fftw; then
+		fft_opts=( -DGMX_FFT_LIBRARY=fftw3 )
+	elif use mkl && has_version "=sci-libs/mkl-10*"; then
+		fft_opts=( -DGMX_FFT_LIBRARY=mkl
+			-DMKL_INCLUDE_DIR="${MKLROOT}/include"
+			-DMKL_LIBRARIES="$(echo /opt/intel/mkl/10.0.5.025/lib/*/libmkl.so);$(echo /opt/intel/mkl/10.0.5.025/lib/*/libiomp*.so)"
+		)
+	elif use mkl; then
+		local bits=$(get_libdir)
+		fft_opts=( -DGMX_FFT_LIBRARY=mkl
+			-DMKL_INCLUDE_DIR="$(echo /opt/intel/*/mkl/include)"
+			-DMKL_LIBRARIES="$(echo /opt/intel/*/mkl/lib/*${bits/lib}/libmkl_rt.so)"
+		)
+	else
+		fft_opts=( -DGMX_FFT_LIBRARY=fftpack )
+	fi
+
+	mycmakeargs_pre+=(
+		"${fft_opts[@]}"
+		-DGMX_X11=$(usex X)
+		-DGMX_EXTERNAL_BLAS=$(usex blas)
+		-DGMX_EXTERNAL_LAPACK=$(usex lapack)
+		-DGMX_OPENMP=$(usex openmp)
+		-DGMX_COOL_QUOTES=$(usex offensive)
+		-DGMX_EXTERNAL_BOOST=$(usex boost)
+		-DGMX_USE_TNG=$(usex tng)
+		-DGMX_BUILD_MANUAL=$(usex doc)
+		-DGMX_SYMLINK_OLD_BINARY_NAMES=$(usex make-symlinks)
+		-DGMX_DEFAULT_SUFFIX=off
+		-DGMX_SIMD="$acce"
+		-DGMX_LIB_INSTALL_DIR="$(get_libdir)"
+		-DGMX_VMD_PLUGIN_PATH="${EPREFIX}/usr/$(get_libdir)/vmd/plugins/*/molfile/"
+		-DGMX_X86_AVX_GCC_MASKLOAD_BUG=OFF
+		-DGMX_USE_GCC44_BUG_WORKAROUND=OFF
+		-DBUILD_TESTING=OFF
+		-DGMX_BUILD_UNITTESTS=OFF
+		${extra}
+	)
+
+	for x in ${GMX_DIRS}; do
+		einfo "Configuring for ${x} precision"
+		local suffix=""
+		#if we build single and double - double is suffixed
+		use double-precision && use single-precision && \
+			[[ ${x} = "double" ]] && suffix="_d"
+		local p
+		[[ ${x} = "double" ]] && p="-DGMX_DOUBLE=ON" || p="-DGMX_DOUBLE=OFF"
+		local cuda=( "-DGMX_GPU=OFF" )
+		[[ ${x} = "float" ]] && use cuda && \
+			cuda=( -DGMX_GPU=ON )
+		mycmakeargs=(
+			${mycmakeargs_pre[@]} ${p}
+			-DGMX_MPI=OFF
+			-DGMX_THREAD_MPI=$(usex threads)
+			"${cuda[@]}"
+			-DGMX_OPENMM=OFF
+			"$(use test && echo -DREGRESSIONTEST_PATH="${WORKDIR}/${P}_${x}/tests")"
+			-DGMX_BINARY_SUFFIX="${suffix}"
+			-DGMX_LIBS_SUFFIX="${suffix}"
+			)
+		BUILD_DIR="${WORKDIR}/${P}_${x}" cmake-utils_src_configure
+		[[ ${CHOST} != *-darwin* ]] || \
+		  sed -i '/SET(CMAKE_INSTALL_NAME_DIR/s/^/#/' "${WORKDIR}/${P}_${x}/gentoo_rules.cmake" || die
+		use mpi || continue
+		einfo "Configuring for ${x} precision with mpi"
+		mycmakeargs=(
+			${mycmakeargs_pre[@]} ${p}
+			-DGMX_THREAD_MPI=OFF
+			-DGMX_MPI=ON ${cuda}
+			-DGMX_OPENMM=OFF
+			-DGMX_BUILD_MDRUN_ONLY=ON
+			-DBUILD_SHARED_LIBS=OFF
+			-DGMX_BUILD_MANUAL=OFF
+			-DGMX_BINARY_SUFFIX="_mpi${suffix}"
+			-DGMX_LIBS_SUFFIX="_mpi${suffix}"
+			)
+		BUILD_DIR="${WORKDIR}/${P}_${x}_mpi" CC="mpicc" cmake-utils_src_configure
+		[[ ${CHOST} != *-darwin* ]] || \
+		  sed -i '/SET(CMAKE_INSTALL_NAME_DIR/s/^/#/' "${WORKDIR}/${P}_${x}_mpi/gentoo_rules.cmake" || die
+	done
+}
+
+src_compile() {
+	for x in ${GMX_DIRS}; do
+		einfo "Compiling for ${x} precision"
+		BUILD_DIR="${WORKDIR}/${P}_${x}"\
+			cmake-utils_src_compile
+		# generate bash completion, not 100% necessary for
+		# rel ebuilds as bundled
+		BUILD_DIR="${WORKDIR}/${P}_${x}"\
+			cmake-utils_src_compile completion
+		# not 100% necessary for rel ebuilds as available from website
+		if use doc; then
+			BUILD_DIR="${WORKDIR}/${P}_${x}"\
+				cmake-utils_src_compile manual
+		fi
+		use mpi || continue
+		einfo "Compiling for ${x} precision with mpi"
+		BUILD_DIR="${WORKDIR}/${P}_${x}_mpi"\
+			cmake-utils_src_compile
+	done
+}
+
+src_test() {
+	for x in ${GMX_DIRS}; do
+		BUILD_DIR="${WORKDIR}/${P}_${x}"\
+			cmake-utils_src_make check
+	done
+}
+
+src_install() {
+	for x in ${GMX_DIRS}; do
+		BUILD_DIR="${WORKDIR}/${P}_${x}" \
+			cmake-utils_src_install
+		if use doc; then
+			newdoc "${WORKDIR}/${P}_${x}"/docs/manual/gromacs.pdf "${PN}-manual-${PV}.pdf"
+		fi
+		#release ebuild does this automatically
+		if [[ $PV = *9999* ]]; then
+			cp "${WORKDIR}/${P}_${x}"/src/programs/completion/gmx-completion.bash "${ED}/usr/bin" || die
+			echo "complete -o nospace -F _gmx_compl gmx" > "${ED}/usr/bin/gmx-completion-gmx.bash" || die
+		fi
+		use mpi || continue
+		BUILD_DIR="${WORKDIR}/${P}_${x}_mpi" \
+			cmake-utils_src_install
+	done
+
+	if use tng; then
+		insinto /usr/include/tng
+		doins src/external/tng_io/include/tng/*h
+	fi
+	# drop unneeded stuff
+	rm "${ED}"usr/bin/GMXRC* || die
+	#concatenate all gmx-completion*, starting with gmx-completion.bash (fct defs)
+	#little hacckery as some gmx-completion* newlines ,so cat won't work
+	for x in "${ED}"usr/bin/gmx-completion{,?*}.bash ; do
+		echo $(<${x})
+	done > "${T}"/gmx-bashcomp || die
+	newbashcomp "${T}"/gmx-bashcomp gmx
+	bashcomp_alias gmx mdrun
+	rm "${ED}"usr/bin/gmx-completion{,?*}.bash || die
+	if use double-precision && use single-precision; then
+		bashcomp_alias gmx gmx_d
+		bashcomp_alias gmx mdrun_d
+	fi
+	readme.gentoo_create_doc
+}
+
+pkg_postinst() {
+	einfo
+	einfo  "Please read and cite:"
+	einfo  "Gromacs 4, J. Chem. Theory Comput. 4, 435 (2008). "
+	einfo  "https://dx.doi.org/10.1021/ct700301q"
+	einfo
+	readme.gentoo_print_elog
+}
diff --git a/sci-chemistry/gromacs/gromacs-5.1.3.ebuild b/sci-chemistry/gromacs/gromacs-5.1.3.ebuild
new file mode 100644
index 000000000000..b08ea7c3af7f
--- /dev/null
+++ b/sci-chemistry/gromacs/gromacs-5.1.3.ebuild
@@ -0,0 +1,268 @@
+# Copyright 1999-2017 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=6
+
+CMAKE_MAKEFILE_GENERATOR="ninja"
+
+inherit bash-completion-r1 cmake-utils cuda eutils multilib readme.gentoo-r1 toolchain-funcs
+
+if [[ $PV = *9999* ]]; then
+	EGIT_REPO_URI="git://git.gromacs.org/gromacs.git
+		https://gerrit.gromacs.org/gromacs.git
+		https://github.com/gromacs/gromacs.git
+		http://repo.or.cz/r/gromacs.git"
+	[[ $PV = 9999 ]] && EGIT_BRANCH="master" || EGIT_BRANCH="release-${PV:0:1}-${PV:2:1}"
+	inherit git-r3
+	KEYWORDS=""
+else
+	SRC_URI="ftp://ftp.gromacs.org/pub/${PN}/${PN}-${PV/_/-}.tar.gz
+		test? ( http://gerrit.gromacs.org/download/regressiontests-${PV}.tar.gz )"
+	KEYWORDS="~alpha ~amd64 ~arm ~ppc64 ~sparc ~x86 ~amd64-linux ~x86-linux ~x64-macos ~x86-macos"
+fi
+
+ACCE_IUSE="cpu_flags_x86_sse2 cpu_flags_x86_sse4_1 cpu_flags_x86_fma4 cpu_flags_x86_avx cpu_flags_x86_avx2"
+
+DESCRIPTION="The ultimate molecular dynamics simulation package"
+HOMEPAGE="http://www.gromacs.org/"
+
+# see COPYING for details
+# http://repo.or.cz/w/gromacs.git/blob/HEAD:/COPYING
+#        base,    vmd plugins, fftpack from numpy,  blas/lapck from netlib,        memtestG80 library,  mpi_thread lib
+LICENSE="LGPL-2.1 UoI-NCSA !mkl? ( !fftw? ( BSD ) !blas? ( BSD ) !lapack? ( BSD ) ) cuda? ( LGPL-3 ) threads? ( BSD )"
+SLOT="0/${PV}"
+IUSE="X blas boost cuda +doc -double-precision +fftw lapack mkl mpi +offensive openmp +single-precision test +threads +tng ${ACCE_IUSE}"
+
+CDEPEND="
+	X? (
+		x11-libs/libX11
+		x11-libs/libSM
+		x11-libs/libICE
+		)
+	blas? ( virtual/blas )
+	boost? ( >=dev-libs/boost-1.55 )
+	cuda? ( >=dev-util/nvidia-cuda-toolkit-4.2.9-r1 )
+	fftw? ( sci-libs/fftw:3.0 )
+	lapack? ( virtual/lapack )
+	mkl? ( sci-libs/mkl )
+	mpi? ( virtual/mpi )
+	"
+DEPEND="${CDEPEND}
+	virtual/pkgconfig
+	doc? (
+		app-doc/doxygen
+		dev-texlive/texlive-latex
+		dev-texlive/texlive-latexextra
+		media-gfx/imagemagick
+	)"
+RDEPEND="${CDEPEND}"
+
+REQUIRED_USE="
+	|| ( single-precision double-precision )
+	cuda? ( single-precision )
+	mkl? ( !blas !fftw !lapack )"
+
+DOCS=( AUTHORS README )
+
+if [[ ${PV} != *9999 ]]; then
+	S="${WORKDIR}/${PN}-${PV/_/-}"
+fi
+
+pkg_pretend() {
+	[[ $(gcc-version) == "4.1" ]] && die "gcc 4.1 is not supported by gromacs"
+	use openmp && ! tc-has-openmp && \
+		die "Please switch to an openmp compatible compiler"
+}
+
+src_unpack() {
+	if [[ ${PV} != *9999 ]]; then
+		default
+	else
+		git-r3_src_unpack
+		if use test; then
+			EGIT_REPO_URI="git://git.gromacs.org/regressiontests.git" \
+			EGIT_BRANCH="${EGIT_BRANCH}" \
+			EGIT_CHECKOUT_DIR="${WORKDIR}/regressiontests"\
+				git-r3_src_unpack
+		fi
+	fi
+}
+
+src_prepare() {
+	#notes/todos
+	# -on apple: there is framework support
+
+	cmake-utils_src_prepare
+
+	use cuda && cuda_src_prepare
+
+	GMX_DIRS=""
+	use single-precision && GMX_DIRS+=" float"
+	use double-precision && GMX_DIRS+=" double"
+
+	if use test; then
+		for x in ${GMX_DIRS}; do
+			mkdir -p "${WORKDIR}/${P}_${x}" || die
+			cp -al "${WORKDIR}/regressiontests"* "${WORKDIR}/${P}_${x}/tests" || die
+		done
+	fi
+
+	DOC_CONTENTS="Gromacs can use sci-chemistry/vmd to read additional file formats"
+}
+
+src_configure() {
+	local mycmakeargs_pre=( ) extra fft_opts=( )
+
+	#go from slowest to fastest acceleration
+	local acce="None"
+	use cpu_flags_x86_sse2 && acce="SSE2"
+	use cpu_flags_x86_sse4_1 && acce="SSE4.1"
+	use cpu_flags_x86_fma4 && acce="AVX_128_FMA"
+	use cpu_flags_x86_avx && acce="AVX_256"
+	use cpu_flags_x86_avx2 && acce="AVX2_256"
+
+	#to create man pages, build tree binaries are executed (bug #398437)
+	[[ ${CHOST} = *-darwin* ]] && \
+		extra+=" -DCMAKE_BUILD_WITH_INSTALL_RPATH=OFF"
+
+	if use fftw; then
+		fft_opts=( -DGMX_FFT_LIBRARY=fftw3 )
+	elif use mkl && has_version "=sci-libs/mkl-10*"; then
+		fft_opts=( -DGMX_FFT_LIBRARY=mkl
+			-DMKL_INCLUDE_DIR="${MKLROOT}/include"
+			-DMKL_LIBRARIES="$(echo /opt/intel/mkl/10.0.5.025/lib/*/libmkl.so);$(echo /opt/intel/mkl/10.0.5.025/lib/*/libiomp*.so)"
+		)
+	elif use mkl; then
+		local bits=$(get_libdir)
+		fft_opts=( -DGMX_FFT_LIBRARY=mkl
+			-DMKL_INCLUDE_DIR="$(echo /opt/intel/*/mkl/include)"
+			-DMKL_LIBRARIES="$(echo /opt/intel/*/mkl/lib/*${bits/lib}/libmkl_rt.so)"
+		)
+	else
+		fft_opts=( -DGMX_FFT_LIBRARY=fftpack )
+	fi
+
+	mycmakeargs_pre+=(
+		"${fft_opts[@]}"
+		-DGMX_X11=$(usex X)
+		-DGMX_EXTERNAL_BLAS=$(usex blas)
+		-DGMX_EXTERNAL_LAPACK=$(usex lapack)
+		-DGMX_OPENMP=$(usex openmp)
+		-DGMX_COOL_QUOTES=$(usex offensive)
+		-DGMX_EXTERNAL_BOOST=$(usex boost)
+		-DGMX_USE_TNG=$(usex tng)
+		-DGMX_BUILD_MANUAL=$(usex doc)
+		-DGMX_DEFAULT_SUFFIX=off
+		-DGMX_SIMD="$acce"
+		-DGMX_LIB_INSTALL_DIR="$(get_libdir)"
+		-DGMX_VMD_PLUGIN_PATH="${EPREFIX}/usr/$(get_libdir)/vmd/plugins/*/molfile/"
+		-DGMX_X86_AVX_GCC_MASKLOAD_BUG=OFF
+		-DGMX_USE_GCC44_BUG_WORKAROUND=OFF
+		-DBUILD_TESTING=$(usex test)
+		-DGMX_BUILD_UNITTESTS=$(usex test)
+		${extra}
+	)
+
+	for x in ${GMX_DIRS}; do
+		einfo "Configuring for ${x} precision"
+		local suffix=""
+		#if we build single and double - double is suffixed
+		use double-precision && use single-precision && \
+			[[ ${x} = "double" ]] && suffix="_d"
+		local p
+		[[ ${x} = "double" ]] && p="-DGMX_DOUBLE=ON" || p="-DGMX_DOUBLE=OFF"
+		local cuda=( "-DGMX_GPU=OFF" )
+		[[ ${x} = "float" ]] && use cuda && \
+			cuda=( -DGMX_GPU=ON )
+		mycmakeargs=(
+			${mycmakeargs_pre[@]} ${p}
+			-DGMX_MPI=OFF
+			-DGMX_THREAD_MPI=$(usex threads)
+			"${cuda[@]}"
+			-DGMX_OPENMM=OFF
+			"$(use test && echo -DREGRESSIONTEST_PATH="${WORKDIR}/${P}_${x}/tests")"
+			-DGMX_BINARY_SUFFIX="${suffix}"
+			-DGMX_LIBS_SUFFIX="${suffix}"
+			)
+		BUILD_DIR="${WORKDIR}/${P}_${x}" cmake-utils_src_configure
+		[[ ${CHOST} != *-darwin* ]] || \
+		  sed -i '/SET(CMAKE_INSTALL_NAME_DIR/s/^/#/' "${WORKDIR}/${P}_${x}/gentoo_rules.cmake" || die
+		use mpi || continue
+		einfo "Configuring for ${x} precision with mpi"
+		mycmakeargs=(
+			${mycmakeargs_pre[@]} ${p}
+			-DGMX_THREAD_MPI=OFF
+			-DGMX_MPI=ON ${cuda}
+			-DGMX_OPENMM=OFF
+			-DGMX_BUILD_MDRUN_ONLY=ON
+			-DBUILD_SHARED_LIBS=OFF
+			-DGMX_BUILD_MANUAL=OFF
+			-DGMX_BINARY_SUFFIX="_mpi${suffix}"
+			-DGMX_LIBS_SUFFIX="_mpi${suffix}"
+			)
+		BUILD_DIR="${WORKDIR}/${P}_${x}_mpi" CC="mpicc" cmake-utils_src_configure
+		[[ ${CHOST} != *-darwin* ]] || \
+		  sed -i '/SET(CMAKE_INSTALL_NAME_DIR/s/^/#/' "${WORKDIR}/${P}_${x}_mpi/gentoo_rules.cmake" || die
+	done
+}
+
+src_compile() {
+	for x in ${GMX_DIRS}; do
+		einfo "Compiling for ${x} precision"
+		BUILD_DIR="${WORKDIR}/${P}_${x}"\
+			cmake-utils_src_compile
+		# not 100% necessary for rel ebuilds as available from website
+		if use doc; then
+			BUILD_DIR="${WORKDIR}/${P}_${x}"\
+				cmake-utils_src_compile manual
+		fi
+		use mpi || continue
+		einfo "Compiling for ${x} precision with mpi"
+		BUILD_DIR="${WORKDIR}/${P}_${x}_mpi"\
+			cmake-utils_src_compile
+	done
+}
+
+src_test() {
+	for x in ${GMX_DIRS}; do
+		BUILD_DIR="${WORKDIR}/${P}_${x}"\
+			cmake-utils_src_make check
+	done
+}
+
+src_install() {
+	for x in ${GMX_DIRS}; do
+		BUILD_DIR="${WORKDIR}/${P}_${x}" \
+			cmake-utils_src_install
+		if use doc; then
+			newdoc "${WORKDIR}/${P}_${x}"/docs/manual/gromacs.pdf "${PN}-manual-${PV}.pdf"
+		fi
+		use mpi || continue
+		BUILD_DIR="${WORKDIR}/${P}_${x}_mpi" \
+			cmake-utils_src_install
+	done
+
+	if use tng; then
+		insinto /usr/include/tng
+		doins src/external/tng_io/include/tng/*h
+	fi
+	# drop unneeded stuff
+	rm "${ED}"usr/bin/GMXRC* || die
+	for x in "${ED}"usr/bin/gmx-completion-*.bash ; do
+		local n=${x##*/gmx-completion-}
+		n="${n%.bash}"
+		cat "${ED}"usr/bin/gmx-completion.bash "$x" > "${T}/${n}" || die
+		newbashcomp "${T}"/"${n}" "${n}"
+	done
+	rm "${ED}"usr/bin/gmx-completion*.bash || die
+	readme.gentoo_create_doc
+}
+
+pkg_postinst() {
+	einfo
+	einfo  "Please read and cite:"
+	einfo  "Gromacs 4, J. Chem. Theory Comput. 4, 435 (2008). "
+	einfo  "https://dx.doi.org/10.1021/ct700301q"
+	einfo
+	readme.gentoo_print_elog
+}
diff --git a/sci-chemistry/gromacs/gromacs-5.1.9999.ebuild b/sci-chemistry/gromacs/gromacs-5.1.9999.ebuild
new file mode 100644
index 000000000000..b08ea7c3af7f
--- /dev/null
+++ b/sci-chemistry/gromacs/gromacs-5.1.9999.ebuild
@@ -0,0 +1,268 @@
+# Copyright 1999-2017 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=6
+
+CMAKE_MAKEFILE_GENERATOR="ninja"
+
+inherit bash-completion-r1 cmake-utils cuda eutils multilib readme.gentoo-r1 toolchain-funcs
+
+if [[ $PV = *9999* ]]; then
+	EGIT_REPO_URI="git://git.gromacs.org/gromacs.git
+		https://gerrit.gromacs.org/gromacs.git
+		https://github.com/gromacs/gromacs.git
+		http://repo.or.cz/r/gromacs.git"
+	[[ $PV = 9999 ]] && EGIT_BRANCH="master" || EGIT_BRANCH="release-${PV:0:1}-${PV:2:1}"
+	inherit git-r3
+	KEYWORDS=""
+else
+	SRC_URI="ftp://ftp.gromacs.org/pub/${PN}/${PN}-${PV/_/-}.tar.gz
+		test? ( http://gerrit.gromacs.org/download/regressiontests-${PV}.tar.gz )"
+	KEYWORDS="~alpha ~amd64 ~arm ~ppc64 ~sparc ~x86 ~amd64-linux ~x86-linux ~x64-macos ~x86-macos"
+fi
+
+ACCE_IUSE="cpu_flags_x86_sse2 cpu_flags_x86_sse4_1 cpu_flags_x86_fma4 cpu_flags_x86_avx cpu_flags_x86_avx2"
+
+DESCRIPTION="The ultimate molecular dynamics simulation package"
+HOMEPAGE="http://www.gromacs.org/"
+
+# see COPYING for details
+# http://repo.or.cz/w/gromacs.git/blob/HEAD:/COPYING
+#        base,    vmd plugins, fftpack from numpy,  blas/lapck from netlib,        memtestG80 library,  mpi_thread lib
+LICENSE="LGPL-2.1 UoI-NCSA !mkl? ( !fftw? ( BSD ) !blas? ( BSD ) !lapack? ( BSD ) ) cuda? ( LGPL-3 ) threads? ( BSD )"
+SLOT="0/${PV}"
+IUSE="X blas boost cuda +doc -double-precision +fftw lapack mkl mpi +offensive openmp +single-precision test +threads +tng ${ACCE_IUSE}"
+
+CDEPEND="
+	X? (
+		x11-libs/libX11
+		x11-libs/libSM
+		x11-libs/libICE
+		)
+	blas? ( virtual/blas )
+	boost? ( >=dev-libs/boost-1.55 )
+	cuda? ( >=dev-util/nvidia-cuda-toolkit-4.2.9-r1 )
+	fftw? ( sci-libs/fftw:3.0 )
+	lapack? ( virtual/lapack )
+	mkl? ( sci-libs/mkl )
+	mpi? ( virtual/mpi )
+	"
+DEPEND="${CDEPEND}
+	virtual/pkgconfig
+	doc? (
+		app-doc/doxygen
+		dev-texlive/texlive-latex
+		dev-texlive/texlive-latexextra
+		media-gfx/imagemagick
+	)"
+RDEPEND="${CDEPEND}"
+
+REQUIRED_USE="
+	|| ( single-precision double-precision )
+	cuda? ( single-precision )
+	mkl? ( !blas !fftw !lapack )"
+
+DOCS=( AUTHORS README )
+
+if [[ ${PV} != *9999 ]]; then
+	S="${WORKDIR}/${PN}-${PV/_/-}"
+fi
+
+pkg_pretend() {
+	[[ $(gcc-version) == "4.1" ]] && die "gcc 4.1 is not supported by gromacs"
+	use openmp && ! tc-has-openmp && \
+		die "Please switch to an openmp compatible compiler"
+}
+
+src_unpack() {
+	if [[ ${PV} != *9999 ]]; then
+		default
+	else
+		git-r3_src_unpack
+		if use test; then
+			EGIT_REPO_URI="git://git.gromacs.org/regressiontests.git" \
+			EGIT_BRANCH="${EGIT_BRANCH}" \
+			EGIT_CHECKOUT_DIR="${WORKDIR}/regressiontests"\
+				git-r3_src_unpack
+		fi
+	fi
+}
+
+src_prepare() {
+	#notes/todos
+	# -on apple: there is framework support
+
+	cmake-utils_src_prepare
+
+	use cuda && cuda_src_prepare
+
+	GMX_DIRS=""
+	use single-precision && GMX_DIRS+=" float"
+	use double-precision && GMX_DIRS+=" double"
+
+	if use test; then
+		for x in ${GMX_DIRS}; do
+			mkdir -p "${WORKDIR}/${P}_${x}" || die
+			cp -al "${WORKDIR}/regressiontests"* "${WORKDIR}/${P}_${x}/tests" || die
+		done
+	fi
+
+	DOC_CONTENTS="Gromacs can use sci-chemistry/vmd to read additional file formats"
+}
+
+src_configure() {
+	local mycmakeargs_pre=( ) extra fft_opts=( )
+
+	#go from slowest to fastest acceleration
+	local acce="None"
+	use cpu_flags_x86_sse2 && acce="SSE2"
+	use cpu_flags_x86_sse4_1 && acce="SSE4.1"
+	use cpu_flags_x86_fma4 && acce="AVX_128_FMA"
+	use cpu_flags_x86_avx && acce="AVX_256"
+	use cpu_flags_x86_avx2 && acce="AVX2_256"
+
+	#to create man pages, build tree binaries are executed (bug #398437)
+	[[ ${CHOST} = *-darwin* ]] && \
+		extra+=" -DCMAKE_BUILD_WITH_INSTALL_RPATH=OFF"
+
+	if use fftw; then
+		fft_opts=( -DGMX_FFT_LIBRARY=fftw3 )
+	elif use mkl && has_version "=sci-libs/mkl-10*"; then
+		fft_opts=( -DGMX_FFT_LIBRARY=mkl
+			-DMKL_INCLUDE_DIR="${MKLROOT}/include"
+			-DMKL_LIBRARIES="$(echo /opt/intel/mkl/10.0.5.025/lib/*/libmkl.so);$(echo /opt/intel/mkl/10.0.5.025/lib/*/libiomp*.so)"
+		)
+	elif use mkl; then
+		local bits=$(get_libdir)
+		fft_opts=( -DGMX_FFT_LIBRARY=mkl
+			-DMKL_INCLUDE_DIR="$(echo /opt/intel/*/mkl/include)"
+			-DMKL_LIBRARIES="$(echo /opt/intel/*/mkl/lib/*${bits/lib}/libmkl_rt.so)"
+		)
+	else
+		fft_opts=( -DGMX_FFT_LIBRARY=fftpack )
+	fi
+
+	mycmakeargs_pre+=(
+		"${fft_opts[@]}"
+		-DGMX_X11=$(usex X)
+		-DGMX_EXTERNAL_BLAS=$(usex blas)
+		-DGMX_EXTERNAL_LAPACK=$(usex lapack)
+		-DGMX_OPENMP=$(usex openmp)
+		-DGMX_COOL_QUOTES=$(usex offensive)
+		-DGMX_EXTERNAL_BOOST=$(usex boost)
+		-DGMX_USE_TNG=$(usex tng)
+		-DGMX_BUILD_MANUAL=$(usex doc)
+		-DGMX_DEFAULT_SUFFIX=off
+		-DGMX_SIMD="$acce"
+		-DGMX_LIB_INSTALL_DIR="$(get_libdir)"
+		-DGMX_VMD_PLUGIN_PATH="${EPREFIX}/usr/$(get_libdir)/vmd/plugins/*/molfile/"
+		-DGMX_X86_AVX_GCC_MASKLOAD_BUG=OFF
+		-DGMX_USE_GCC44_BUG_WORKAROUND=OFF
+		-DBUILD_TESTING=$(usex test)
+		-DGMX_BUILD_UNITTESTS=$(usex test)
+		${extra}
+	)
+
+	for x in ${GMX_DIRS}; do
+		einfo "Configuring for ${x} precision"
+		local suffix=""
+		#if we build single and double - double is suffixed
+		use double-precision && use single-precision && \
+			[[ ${x} = "double" ]] && suffix="_d"
+		local p
+		[[ ${x} = "double" ]] && p="-DGMX_DOUBLE=ON" || p="-DGMX_DOUBLE=OFF"
+		local cuda=( "-DGMX_GPU=OFF" )
+		[[ ${x} = "float" ]] && use cuda && \
+			cuda=( -DGMX_GPU=ON )
+		mycmakeargs=(
+			${mycmakeargs_pre[@]} ${p}
+			-DGMX_MPI=OFF
+			-DGMX_THREAD_MPI=$(usex threads)
+			"${cuda[@]}"
+			-DGMX_OPENMM=OFF
+			"$(use test && echo -DREGRESSIONTEST_PATH="${WORKDIR}/${P}_${x}/tests")"
+			-DGMX_BINARY_SUFFIX="${suffix}"
+			-DGMX_LIBS_SUFFIX="${suffix}"
+			)
+		BUILD_DIR="${WORKDIR}/${P}_${x}" cmake-utils_src_configure
+		[[ ${CHOST} != *-darwin* ]] || \
+		  sed -i '/SET(CMAKE_INSTALL_NAME_DIR/s/^/#/' "${WORKDIR}/${P}_${x}/gentoo_rules.cmake" || die
+		use mpi || continue
+		einfo "Configuring for ${x} precision with mpi"
+		mycmakeargs=(
+			${mycmakeargs_pre[@]} ${p}
+			-DGMX_THREAD_MPI=OFF
+			-DGMX_MPI=ON ${cuda}
+			-DGMX_OPENMM=OFF
+			-DGMX_BUILD_MDRUN_ONLY=ON
+			-DBUILD_SHARED_LIBS=OFF
+			-DGMX_BUILD_MANUAL=OFF
+			-DGMX_BINARY_SUFFIX="_mpi${suffix}"
+			-DGMX_LIBS_SUFFIX="_mpi${suffix}"
+			)
+		BUILD_DIR="${WORKDIR}/${P}_${x}_mpi" CC="mpicc" cmake-utils_src_configure
+		[[ ${CHOST} != *-darwin* ]] || \
+		  sed -i '/SET(CMAKE_INSTALL_NAME_DIR/s/^/#/' "${WORKDIR}/${P}_${x}_mpi/gentoo_rules.cmake" || die
+	done
+}
+
+src_compile() {
+	for x in ${GMX_DIRS}; do
+		einfo "Compiling for ${x} precision"
+		BUILD_DIR="${WORKDIR}/${P}_${x}"\
+			cmake-utils_src_compile
+		# not 100% necessary for rel ebuilds as available from website
+		if use doc; then
+			BUILD_DIR="${WORKDIR}/${P}_${x}"\
+				cmake-utils_src_compile manual
+		fi
+		use mpi || continue
+		einfo "Compiling for ${x} precision with mpi"
+		BUILD_DIR="${WORKDIR}/${P}_${x}_mpi"\
+			cmake-utils_src_compile
+	done
+}
+
+src_test() {
+	for x in ${GMX_DIRS}; do
+		BUILD_DIR="${WORKDIR}/${P}_${x}"\
+			cmake-utils_src_make check
+	done
+}
+
+src_install() {
+	for x in ${GMX_DIRS}; do
+		BUILD_DIR="${WORKDIR}/${P}_${x}" \
+			cmake-utils_src_install
+		if use doc; then
+			newdoc "${WORKDIR}/${P}_${x}"/docs/manual/gromacs.pdf "${PN}-manual-${PV}.pdf"
+		fi
+		use mpi || continue
+		BUILD_DIR="${WORKDIR}/${P}_${x}_mpi" \
+			cmake-utils_src_install
+	done
+
+	if use tng; then
+		insinto /usr/include/tng
+		doins src/external/tng_io/include/tng/*h
+	fi
+	# drop unneeded stuff
+	rm "${ED}"usr/bin/GMXRC* || die
+	for x in "${ED}"usr/bin/gmx-completion-*.bash ; do
+		local n=${x##*/gmx-completion-}
+		n="${n%.bash}"
+		cat "${ED}"usr/bin/gmx-completion.bash "$x" > "${T}/${n}" || die
+		newbashcomp "${T}"/"${n}" "${n}"
+	done
+	rm "${ED}"usr/bin/gmx-completion*.bash || die
+	readme.gentoo_create_doc
+}
+
+pkg_postinst() {
+	einfo
+	einfo  "Please read and cite:"
+	einfo  "Gromacs 4, J. Chem. Theory Comput. 4, 435 (2008). "
+	einfo  "https://dx.doi.org/10.1021/ct700301q"
+	einfo
+	readme.gentoo_print_elog
+}
diff --git a/sci-chemistry/gromacs/gromacs-9999.ebuild b/sci-chemistry/gromacs/gromacs-9999.ebuild
new file mode 100644
index 000000000000..b38e62cc3e58
--- /dev/null
+++ b/sci-chemistry/gromacs/gromacs-9999.ebuild
@@ -0,0 +1,267 @@
+# Copyright 1999-2017 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=6
+
+CMAKE_MAKEFILE_GENERATOR="ninja"
+
+inherit bash-completion-r1 cmake-utils cuda eutils multilib readme.gentoo-r1 toolchain-funcs xdg-utils
+
+if [[ $PV = *9999* ]]; then
+	EGIT_REPO_URI="git://git.gromacs.org/gromacs.git
+		https://gerrit.gromacs.org/gromacs.git
+		https://github.com/gromacs/gromacs.git
+		http://repo.or.cz/r/gromacs.git"
+	[[ $PV = 9999 ]] && EGIT_BRANCH="master" || EGIT_BRANCH="release-${PV:0:4}"
+	inherit git-r3
+	KEYWORDS=""
+else
+	SRC_URI="ftp://ftp.gromacs.org/pub/${PN}/${PN}-${PV/_/-}.tar.gz
+		test? ( http://gerrit.gromacs.org/download/regressiontests-${PV/_/-}.tar.gz )"
+	KEYWORDS="~alpha ~amd64 ~arm ~ppc64 ~sparc ~x86 ~amd64-linux ~x86-linux ~x64-macos ~x86-macos"
+fi
+
+ACCE_IUSE="cpu_flags_x86_sse2 cpu_flags_x86_sse4_1 cpu_flags_x86_fma4 cpu_flags_x86_avx cpu_flags_x86_avx2"
+
+DESCRIPTION="The ultimate molecular dynamics simulation package"
+HOMEPAGE="http://www.gromacs.org/"
+
+# see COPYING for details
+# http://repo.or.cz/w/gromacs.git/blob/HEAD:/COPYING
+#        base,    vmd plugins, fftpack from numpy,  blas/lapck from netlib,        memtestG80 library,  mpi_thread lib
+LICENSE="LGPL-2.1 UoI-NCSA !mkl? ( !fftw? ( BSD ) !blas? ( BSD ) !lapack? ( BSD ) ) cuda? ( LGPL-3 ) threads? ( BSD )"
+SLOT="0/${PV}"
+IUSE="X blas cuda +doc -double-precision +fftw +hwloc lapack mkl mpi +offensive openmp +single-precision test +threads +tng ${ACCE_IUSE}"
+
+CDEPEND="
+	X? (
+		x11-libs/libX11
+		x11-libs/libSM
+		x11-libs/libICE
+		)
+	blas? ( virtual/blas )
+	cuda? ( >=dev-util/nvidia-cuda-toolkit-4.2.9-r1 )
+	fftw? ( sci-libs/fftw:3.0 )
+	hwloc? ( sys-apps/hwloc )
+	lapack? ( virtual/lapack )
+	mkl? ( sci-libs/mkl )
+	mpi? ( virtual/mpi )
+	"
+DEPEND="${CDEPEND}
+	virtual/pkgconfig
+	doc? (
+		app-doc/doxygen
+		dev-texlive/texlive-latex
+		dev-texlive/texlive-latexextra
+		media-gfx/imagemagick
+	)"
+RDEPEND="${CDEPEND}"
+
+REQUIRED_USE="
+	|| ( single-precision double-precision )
+	cuda? ( single-precision )
+	mkl? ( !blas !fftw !lapack )"
+
+DOCS=( AUTHORS README )
+
+if [[ ${PV} != *9999 ]]; then
+	S="${WORKDIR}/${PN}-${PV/_/-}"
+fi
+
+pkg_pretend() {
+	[[ $(gcc-version) == "4.1" ]] && die "gcc 4.1 is not supported by gromacs"
+	use openmp && ! tc-has-openmp && \
+		die "Please switch to an openmp compatible compiler"
+}
+
+src_unpack() {
+	if [[ ${PV} != *9999 ]]; then
+		default
+	else
+		git-r3_src_unpack
+		if use test; then
+			EGIT_REPO_URI="git://git.gromacs.org/regressiontests.git" \
+			EGIT_BRANCH="${EGIT_BRANCH}" \
+			EGIT_CHECKOUT_DIR="${WORKDIR}/regressiontests"\
+				git-r3_src_unpack
+		fi
+	fi
+}
+
+src_prepare() {
+	#notes/todos
+	# -on apple: there is framework support
+
+	xdg_environment_reset #591952
+
+	cmake-utils_src_prepare
+
+	use cuda && cuda_src_prepare
+
+	GMX_DIRS=""
+	use single-precision && GMX_DIRS+=" float"
+	use double-precision && GMX_DIRS+=" double"
+
+	if use test; then
+		for x in ${GMX_DIRS}; do
+			mkdir -p "${WORKDIR}/${P}_${x}" || die
+			cp -al "${WORKDIR}/regressiontests"* "${WORKDIR}/${P}_${x}/tests" || die
+		done
+	fi
+
+	DOC_CONTENTS="Gromacs can use sci-chemistry/vmd to read additional file formats"
+}
+
+src_configure() {
+	local mycmakeargs_pre=( ) extra fft_opts=( )
+
+	#go from slowest to fastest acceleration
+	local acce="None"
+	use cpu_flags_x86_sse2 && acce="SSE2"
+	use cpu_flags_x86_sse4_1 && acce="SSE4.1"
+	use cpu_flags_x86_fma4 && acce="AVX_128_FMA"
+	use cpu_flags_x86_avx && acce="AVX_256"
+	use cpu_flags_x86_avx2 && acce="AVX2_256"
+
+	#to create man pages, build tree binaries are executed (bug #398437)
+	[[ ${CHOST} = *-darwin* ]] && \
+		extra+=" -DCMAKE_BUILD_WITH_INSTALL_RPATH=OFF"
+
+	if use fftw; then
+		fft_opts=( -DGMX_FFT_LIBRARY=fftw3 )
+	elif use mkl && has_version "=sci-libs/mkl-10*"; then
+		fft_opts=( -DGMX_FFT_LIBRARY=mkl
+			-DMKL_INCLUDE_DIR="${MKLROOT}/include"
+			-DMKL_LIBRARIES="$(echo /opt/intel/mkl/10.0.5.025/lib/*/libmkl.so);$(echo /opt/intel/mkl/10.0.5.025/lib/*/libiomp*.so)"
+		)
+	elif use mkl; then
+		local bits=$(get_libdir)
+		fft_opts=( -DGMX_FFT_LIBRARY=mkl
+			-DMKL_INCLUDE_DIR="$(echo /opt/intel/*/mkl/include)"
+			-DMKL_LIBRARIES="$(echo /opt/intel/*/mkl/lib/*${bits/lib}/libmkl_rt.so)"
+		)
+	else
+		fft_opts=( -DGMX_FFT_LIBRARY=fftpack )
+	fi
+
+	mycmakeargs_pre+=(
+		"${fft_opts[@]}"
+		-DGMX_X11=$(usex X)
+		-DGMX_EXTERNAL_BLAS=$(usex blas)
+		-DGMX_EXTERNAL_LAPACK=$(usex lapack)
+		-DGMX_OPENMP=$(usex openmp)
+		-DGMX_COOL_QUOTES=$(usex offensive)
+		-DGMX_USE_TNG=$(usex tng)
+		-DGMX_BUILD_MANUAL=$(usex doc)
+		-DGMX_HWLOC=$(usex hwloc)
+		-DGMX_DEFAULT_SUFFIX=off
+		-DGMX_SIMD="$acce"
+		-DGMX_LIB_INSTALL_DIR="$(get_libdir)"
+		-DGMX_VMD_PLUGIN_PATH="${EPREFIX}/usr/$(get_libdir)/vmd/plugins/*/molfile/"
+		-DBUILD_TESTING=$(usex test)
+		-DGMX_BUILD_UNITTESTS=$(usex test)
+		${extra}
+	)
+
+	for x in ${GMX_DIRS}; do
+		einfo "Configuring for ${x} precision"
+		local suffix=""
+		#if we build single and double - double is suffixed
+		use double-precision && use single-precision && \
+			[[ ${x} = "double" ]] && suffix="_d"
+		local p
+		[[ ${x} = "double" ]] && p="-DGMX_DOUBLE=ON" || p="-DGMX_DOUBLE=OFF"
+		local cuda=( "-DGMX_GPU=OFF" )
+		[[ ${x} = "float" ]] && use cuda && \
+			cuda=( -DGMX_GPU=ON )
+		mycmakeargs=(
+			${mycmakeargs_pre[@]} ${p}
+			-DGMX_MPI=OFF
+			-DGMX_THREAD_MPI=$(usex threads)
+			"${cuda[@]}"
+			"$(use test && echo -DREGRESSIONTEST_PATH="${WORKDIR}/${P}_${x}/tests")"
+			-DGMX_BINARY_SUFFIX="${suffix}"
+			-DGMX_LIBS_SUFFIX="${suffix}"
+			)
+		BUILD_DIR="${WORKDIR}/${P}_${x}" cmake-utils_src_configure
+		[[ ${CHOST} != *-darwin* ]] || \
+		  sed -i '/SET(CMAKE_INSTALL_NAME_DIR/s/^/#/' "${WORKDIR}/${P}_${x}/gentoo_rules.cmake" || die
+		use mpi || continue
+		einfo "Configuring for ${x} precision with mpi"
+		mycmakeargs=(
+			${mycmakeargs_pre[@]} ${p}
+			-DGMX_THREAD_MPI=OFF
+			-DGMX_MPI=ON ${cuda}
+			-DGMX_OPENMM=OFF
+			-DGMX_BUILD_MDRUN_ONLY=ON
+			-DBUILD_SHARED_LIBS=OFF
+			-DGMX_BUILD_MANUAL=OFF
+			-DGMX_BINARY_SUFFIX="_mpi${suffix}"
+			-DGMX_LIBS_SUFFIX="_mpi${suffix}"
+			)
+		BUILD_DIR="${WORKDIR}/${P}_${x}_mpi" CC="mpicc" cmake-utils_src_configure
+		[[ ${CHOST} != *-darwin* ]] || \
+		  sed -i '/SET(CMAKE_INSTALL_NAME_DIR/s/^/#/' "${WORKDIR}/${P}_${x}_mpi/gentoo_rules.cmake" || die
+	done
+}
+
+src_compile() {
+	for x in ${GMX_DIRS}; do
+		einfo "Compiling for ${x} precision"
+		BUILD_DIR="${WORKDIR}/${P}_${x}"\
+			cmake-utils_src_compile
+		# not 100% necessary for rel ebuilds as available from website
+		if use doc; then
+			BUILD_DIR="${WORKDIR}/${P}_${x}"\
+				cmake-utils_src_compile manual
+		fi
+		use mpi || continue
+		einfo "Compiling for ${x} precision with mpi"
+		BUILD_DIR="${WORKDIR}/${P}_${x}_mpi"\
+			cmake-utils_src_compile
+	done
+}
+
+src_test() {
+	for x in ${GMX_DIRS}; do
+		BUILD_DIR="${WORKDIR}/${P}_${x}"\
+			cmake-utils_src_make check
+	done
+}
+
+src_install() {
+	for x in ${GMX_DIRS}; do
+		BUILD_DIR="${WORKDIR}/${P}_${x}" \
+			cmake-utils_src_install
+		if use doc; then
+			newdoc "${WORKDIR}/${P}_${x}"/docs/manual/gromacs.pdf "${PN}-manual-${PV}.pdf"
+		fi
+		use mpi || continue
+		BUILD_DIR="${WORKDIR}/${P}_${x}_mpi" \
+			cmake-utils_src_install
+	done
+
+	if use tng; then
+		insinto /usr/include/tng
+		doins src/external/tng_io/include/tng/*h
+	fi
+	# drop unneeded stuff
+	rm "${ED}"usr/bin/GMXRC* || die
+	for x in "${ED}"usr/bin/gmx-completion-*.bash ; do
+		local n=${x##*/gmx-completion-}
+		n="${n%.bash}"
+		cat "${ED}"usr/bin/gmx-completion.bash "$x" > "${T}/${n}" || die
+		newbashcomp "${T}"/"${n}" "${n}"
+	done
+	rm "${ED}"usr/bin/gmx-completion*.bash || die
+	readme.gentoo_create_doc
+}
+
+pkg_postinst() {
+	einfo
+	einfo  "Please read and cite:"
+	einfo  "Gromacs 4, J. Chem. Theory Comput. 4, 435 (2008). "
+	einfo  "https://dx.doi.org/10.1021/ct700301q"
+	einfo
+	readme.gentoo_print_elog
+}
diff --git a/sci-chemistry/gromacs/metadata.xml b/sci-chemistry/gromacs/metadata.xml
new file mode 100644
index 000000000000..b8361e7073ce
--- /dev/null
+++ b/sci-chemistry/gromacs/metadata.xml
@@ -0,0 +1,28 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
+<pkgmetadata>
+  <maintainer type="person">
+    <email>junghans@gentoo.org</email>
+    <name>Christoph Junghans</name>
+  </maintainer>
+  <maintainer type="person">
+	  <email>alexxy@gentoo.org</email>
+	  <name>Alexey Shvetsov</name>
+  </maintainer>
+  <maintainer type="project">
+    <email>sci-chemistry@gentoo.org</email>
+    <name>Gentoo Chemistry Project</name>
+  </maintainer>
+  <use>
+    <flag name="cuda">Enable cuda non-bonded kernels</flag>
+    <flag name="double-precision">More precise calculations at the expense of speed</flag>
+    <flag name="single-precision">Single precision version of gromacs (default)</flag>
+	<flag name="boost">Enable external boost library</flag>
+	<flag name="hwloc">Enable HWLoc lib support</flag>
+    <flag name="tng">Enable new trajectory format - tng</flag>
+    <flag name="make-symlinks">Create symbolic links for pre-5.0 binary names</flag>
+    <!-- acceleration optimization flags -->
+    <flag name="offensive">Enable gromacs partly offensive quotes</flag>
+    <flag name="mkl">Use <pkg>sci-libs/mkl</pkg> for fft, blas, lapack routines</flag>
+  </use>
+</pkgmetadata>