3 files changed, 130 insertions, 0 deletions
diff --git a/dev-libs/gmp/Manifest b/dev-libs/gmp/Manifest
index 3acede9931e2..44b9cba1d9e4 100644
--- a/dev-libs/gmp/Manifest
+++ b/dev-libs/gmp/Manifest
@@ -1,6 +1,8 @@
 AUX gmp-6.1.0-noexecstack-detect.patch 970 BLAKE2B 3b74021e37d5fd6b0b7baa6ad8298962c54cceb769a5f70b3c5fb5ef82392ee2308e6613cd93b0a78b69235c1a73aedc0eb54bbc77b0daebc022d3f1bd05413d SHA512 29af921eed5dbd2d506bc1acdc0eacb8b7f5e7f575fd62038f00a910242bf622980a4197dae18daf5915963c3407ca7eb5bdcb9760f958794348b449fc54e042
 AUX gmp-6.1.2-gcc-apple-4.0.1.patch 979 BLAKE2B 0fe8bf2db0e4633f5d230f02a0bbeb8f0a0dea5c5f2b79e0821733612dadcb0ae4c5815255640afe383e8424e2cf323c0ae33990ee2c21e963811ac434b466a1 SHA512 d1d9898c1978dcdc41dce95d2fc9e23f2ccb0615d02ca453045ece04e9bfd45aa9194774e1e3ea4efe7b40c8f2179233dbecbaa748e7c40d4f31f3adc78d878e
+AUX gmp-6.2.1-no-zarch.patch 623 BLAKE2B 4cdf9b780ca92f56eb3dd030a3614169b8cf4df94ec3b419d97c5488dd091c1847605b3525e1d90f07434b38cb82135b9a91d87785b79f0af828cbb09c54adde SHA512 6f071f6c44d3991a92f157545832238bcd2d7275321f7420aff0b4f88a95a66ba7cfd457d3c56040f8579a1be0b77ddedadc7dc4ce8a31c75266909fbb61c399
 DIST gmp-6.2.1.tar.xz 2027316 BLAKE2B c0d85f175392a50cfa01bc6b0a312b235946ad8b4f6f84f6dabd33d7a6f2cc75c9b0e1e33057be07750bfa0145b7c4cf3b6188a5be6ca9d7271ec2276c84ebcb SHA512 c99be0950a1d05a0297d65641dd35b75b74466f7bf03c9e8a99895a3b2f9a0856cd17887738fa51cf7499781b65c049769271cbcb77d057d2e9f1ec52e07dd84
 DIST gmp-man-6.2.0.pdf 828998 BLAKE2B 0bf56bf0a6f1aac0e1fb9a5a37552f846a2d4a01bfd3f5b5c531d42a9afc48c19552e08971785805f59e3f2a5fd89e3f986f841dca2e340813596cfd76574e61 SHA512 25d129efedd329cd2d4535557c6912191f587bfd8ef028618b4ca6199ec7bf7a9ae862e7f5e5b5448c86888452a39fc7bf95cf9c18311858dd1aa9ae1c716239
+EBUILD gmp-6.2.1-r1.ebuild 3101 BLAKE2B a042c754bf50429a85c65d63e33f5391b6f3ff3acdf5325a965b60a93ec5302104e31271803a2df9081216d8dcddad82304ef4b13e11cd4a5e5a6ef4dfe10927 SHA512 a8c4dd19a4c20b9723af536a967333bd8c1d011f74f93c7bef24422f1369963340de217a77e66ff62bdcfda4b563d13be6a5dd89c56669ca4391568663ad8d54
 EBUILD gmp-6.2.1.ebuild 3050 BLAKE2B bf2eb852144ec36f5ba182371b501d9c9c2e66a311fdb83ca1288017615a5ea07839eea21a4aa8d7fccad342f5ff8b0d842517254419f6af80cebdc8c8485324 SHA512 52be7365be21e1b4109df63cd8dc544a54681bbeede58ab1e518b9bf3f852ab1b6360066dc17d85eae7f43d8757016b50e2558709779462f53d6c3cc775fe78f
 MISC metadata.xml 523 BLAKE2B fc919502e81ea5a1a169284b1782a8044887082e485cfb8497eef7c4cd5cf6c2170818ca6a60b43d90d92eea03f82535a58e72346ba3e8eff240a3a3be4a7f99 SHA512 ea63c1b90851f602787ff84b8e6dbc51f56bf9e5c724ff4a9e7367af83ce8d2d8d0a17770c29e23d00167cbe033292b614195912bd40cb404824c4d22bdda82b
diff --git a/dev-libs/gmp/files/gmp-6.2.1-no-zarch.patch b/dev-libs/gmp/files/gmp-6.2.1-no-zarch.patch
new file mode 100644
index 000000000000..6ba7c8aa561b
--- /dev/null
+++ b/dev-libs/gmp/files/gmp-6.2.1-no-zarch.patch
@@ -0,0 +1,20 @@
+configure.ac decides whether udiv_w_sdiv.c fallback is needed
+based on $CHOST value (without $CFLAGS). longlong.h relies
+on compiler macros (relies on $CFLAGS implicitly).
+
+That leads to use of undefined macros. The workaround makes
+udiv_w_sdiv.c a no-on for -mzarch.
+
+https://bugs.gentoo.org/761310
+--- a/mpn/generic/udiv_w_sdiv.c
++++ b/mpn/generic/udiv_w_sdiv.c
+@@ -1,3 +1,4 @@
++#if !defined(__zarch__)
+ /* mpn_udiv_w_sdiv -- implement udiv_qrnnd on machines with only signed
+    division.
+ 
+@@ -139,3 +140,4 @@ mpn_udiv_w_sdiv (mp_limb_t *rp, mp_limb_t a1, mp_limb_t a0, mp_limb_t d)
+   *rp = r;
+   return q;
+ }
++#endif
diff --git a/dev-libs/gmp/gmp-6.2.1-r1.ebuild b/dev-libs/gmp/gmp-6.2.1-r1.ebuild
new file mode 100644
index 000000000000..9046e8651103
--- /dev/null
+++ b/dev-libs/gmp/gmp-6.2.1-r1.ebuild
@@ -0,0 +1,108 @@
+# Copyright 1999-2021 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=7
+
+inherit flag-o-matic eutils libtool multilib-minimal toolchain-funcs
+
+MY_PV=${PV/_p*}
+MY_PV=${MY_PV/_/-}
+MANUAL_PV=$MY_PV
+MANUAL_PV=6.2.0 # 6.2.1 manual is not ready yet
+MY_P=${PN}-${MY_PV}
+PLEVEL=${PV/*p}
+DESCRIPTION="Library for arbitrary-precision arithmetic on different type of numbers"
+HOMEPAGE="https://gmplib.org/"
+SRC_URI="ftp://ftp.gmplib.org/pub/${MY_P}/${MY_P}.tar.xz
+	mirror://gnu/${PN}/${MY_P}.tar.xz
+	doc? ( https://gmplib.org/${PN}-man-${MANUAL_PV}.pdf )"
+
+LICENSE="|| ( LGPL-3+ GPL-2+ )"
+# The subslot reflects the C & C++ SONAMEs.
+SLOT="0/10.4"
+KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~ia64 ~m68k ~mips ~ppc ~ppc64 ~riscv ~s390 ~sparc ~x86 ~x64-cygwin ~amd64-linux ~x86-linux ~ppc-macos ~x64-macos ~sparc-solaris ~sparc64-solaris ~x64-solaris ~x86-solaris"
+IUSE="+asm doc +cxx pic static-libs"
+
+BDEPEND="sys-devel/m4
+	app-arch/xz-utils"
+
+S=${WORKDIR}/${MY_P%a}
+
+DOCS=( AUTHORS ChangeLog NEWS README doc/configuration doc/isa_abi_headache )
+HTML_DOCS=( doc )
+MULTILIB_WRAPPED_HEADERS=( /usr/include/gmp.h )
+
+PATCHES=(
+	"${FILESDIR}"/${PN}-6.1.0-noexecstack-detect.patch
+	"${FILESDIR}"/${PN}-6.2.1-no-zarch.patch
+)
+
+src_prepare() {
+	default
+
+	# note: we cannot run autotools here as gcc depends on this package
+	elibtoolize
+
+	# https://bugs.gentoo.org/536894
+	if [[ ${CHOST} == *-darwin* ]] ; then
+		eapply "${FILESDIR}"/${PN}-6.1.2-gcc-apple-4.0.1.patch
+	fi
+
+	# GMP uses the "ABI" env var during configure as does Gentoo (econf).
+	# So, to avoid patching the source constantly, wrap things up.
+	mv configure configure.wrapped || die
+	cat <<-\EOF > configure
+	#!/usr/bin/env sh
+	exec env ABI="${GMPABI}" "$0.wrapped" "$@"
+	EOF
+	# Patches to original configure might have lost the +x bit.
+	chmod a+rx configure{,.wrapped} || die
+}
+
+multilib_src_configure() {
+	# Because of our 32-bit userland, 1.0 is the only HPPA ABI that works
+	# https://gmplib.org/manual/ABI-and-ISA.html#ABI-and-ISA (bug #344613)
+	if [[ ${CHOST} == hppa2.0-* ]] ; then
+		GMPABI="1.0"
+	fi
+
+	# ABI mappings (needs all architectures supported)
+	case ${ABI} in
+		32|x86)       GMPABI=32;;
+		64|amd64|n64) GMPABI=64;;
+		[onx]32)      GMPABI=${ABI};;
+	esac
+	export GMPABI
+
+	#367719
+	if [[ ${CHOST} == *-mint* ]]; then
+		filter-flags -O?
+	fi
+
+	# --with-pic forces static libraries to be built as PIC
+	# and without TEXTRELs. musl does not support TEXTRELs: bug #707332
+	tc-export CC
+	ECONF_SOURCE="${S}" econf \
+		CC_FOR_BUILD="$(tc-getBUILD_CC)" \
+		--localstatedir="${EPREFIX}"/var/state/gmp \
+		--enable-shared \
+		$(use_enable asm assembly) \
+		$(use_enable cxx) \
+		$(use pic && echo --with-pic) \
+		$(use_enable static-libs static)
+}
+
+multilib_src_install() {
+	emake DESTDIR="${D}" install
+
+	# should be a standalone lib
+	rm -f "${ED}"/usr/$(get_libdir)/libgmp.la
+	# this requires libgmp
+	local la="${ED}/usr/$(get_libdir)/libgmpxx.la"
+	use static-libs || rm -f "${la}"
+}
+
+multilib_src_install_all() {
+	einstalldocs
+	use doc && cp "${DISTDIR}"/gmp-man-${MANUAL_PV}.pdf "${ED}"/usr/share/doc/${PF}/
+}