gentoo resync : 05.12.2021

4 files changed, 713 insertions, 3 deletions

diff --git a/media-libs/opencv/Manifest b/media-libs/opencv/Manifest
index 939cb3d56930..9bf278e3e68b 100644
--- a/media-libs/opencv/Manifest
+++ b/media-libs/opencv/Manifest
@@ -3,6 +3,7 @@ AUX opencv-3.4.1-cuda-add-relaxed-constexpr.patch 707 BLAKE2B 743a9c259c59fc4e30
 AUX opencv-4.1.2-opencl-license.patch 519 BLAKE2B 6dcdf809c3c75a39d0e44f02e157a0c0ee074fd15144565ed51ade7e7849cb313c084100f499cc1240424f4647a2ff73c8d5e61cbdf6d0499846db61b8a30729 SHA512 2874a5140ef5028eb6c64f36325904000edd722560cf876fc49d63b040633bcfea01cae27c156b18191564805cafd2986f26eea322b1376af4f2982d66ed7653
 AUX opencv-4.4.0-disable-native-cpuflag-detect.patch 1218 BLAKE2B 06569f6b7d33eccb11cae74624a2cc7d7e1eb788145813509220dc8436d2380892392be8c4af03fec845f3eade74b6277985cf80e38785317b15f17890bcaa4c SHA512 3be60f7ee28e3b001ef0c791e3ce1c849ff6fa9fdb70731716668b2698eed9abb24ee3aead1dbc857ed68fc46a645c70a1e3831e8a3e5a5b1791aa06bd2f9ee1
 AUX opencv-4.5.0-link-with-cblas-for-lapack.patch 726 BLAKE2B adbffd961c88229bf810e13fe20705352ff506a653c1d55bb0687c03d8daf9e05aed0f2ba9cd6e306c625837d6ddf64eeb99dc6cbf2b15fae833f4a7eea6aad0 SHA512 4c3108e304721c2cd78eb82f5d7bccc18831db5f47bc628a98ae6a37da389deef30e7e9b6dc5644e3bc0e0fafdd907dc37822a58a25555999698527d2ac364b0
+AUX opencv-4.5.2-lapack-3.10.patch 6646 BLAKE2B e4e379b638fff6779fc9baae9f17a43d6cbddbc4c3c2f9435f1409dc547c6ef3fe729c9f35859644cabb45763f013bc7c1434a1d413a4be9aa2030587892650b SHA512 ca3ba2517cc02e633807871048099c175f9b8f73cf7a44a67632d48595b1e3c5a7a1160e6692fc3fdb4e79551b34cc8421277a62e9bddfe2a227dc012a9ec855
 DIST opencv-3.4.0-face_landmark_model.tar.gz 63299830 BLAKE2B 58f08cd8c030ee1c8b66e76a561fd625e112face427d001185f8d7c0eaace55adbd8474663021841a1382bfe393a210e64c51223441713cdb9156fac866a845c SHA512 2cd29ce42c08b2966db3ef4a2bc217ab3d07051819757ec6de8f3deea29e28f60abab39f101dba03f766f17018598e411bd687a7eaab0c681c113e10a2de2b23
 DIST opencv-3.4.0-res10_300x300-caffeemodel.tar.gz 10036604 BLAKE2B 2a2de48fc420f13e7be146ac88f311901c5b4e409c30e466152e33cae1f8afd87dcb6d758af447c268d90bd67989c8798cd80cab172b10499a6ad5224509dbdf SHA512 96fee9f447d5739bc01a5cab37c453cf7237457dfb5d2bf93ac37f8e5aa557ac222316f449cd58e37e856abe4d8e9d4a7820daaba32f0b22cbcde8e340287d4b
 DIST opencv-4.4.0_extdep.tar.gz 65334871 BLAKE2B 89fa0083da428e986bb4287295bdbff626d0f84866377413649c1d7ca77338288141f22d2a3c0b64d6d0fc1db98f918c8b33a665274cee4c4aefb44359e4333d SHA512 7b758099ce4abef151051e3e9e1e45b73e4054669d3aa53051e4d4c5f43d9373c9bda5ecbce51f6b024562cb566bd1117505af29ab5f3c36a493f185111a3b4e
@@ -12,9 +13,12 @@ DIST opencv-4.5.1.tar.gz 88245766 BLAKE2B 219403844b459fcce012b942920a7a8264fb85
 DIST opencv-4.5.1_contrib.tar.gz 60602431 BLAKE2B 629e820e74147f442f8264c610228892e88c1e84575fb4efa612c8568df40a2e533f90ed2727ba7416e2ff08d9a655400b326841bf090fec79cd31f39334966e SHA512 1ebb9fec53b74039ffa2dc9f00899ab83af615f01156c0454ea7c53161256b6c9fd4548387fbfd197182c2d03db4de8c7170e2877b4648ce92531f821e81fdd7
 DIST opencv-4.5.2.tar.gz 88925795 BLAKE2B 625d3e1d98d4438ebfa165e595fc661658ae1f218d3c50c0b8dfedf936019093c1e61ead86b19c643205f0d77e40c69ea15c3d95454129a23a2c4e17885b65f3 SHA512 07788ec49801bdab963a057871e81fc2b081149c75764810197766d987e54db0d6fd142d2397bbbacefcea6a8be100235ea886ee7e5d5c07ed1156e76249dfec
 DIST opencv-4.5.2_contrib.tar.gz 60800680 BLAKE2B d96b3c440090d3ab26f99a3822d1d85581e370dc0fde7cf3a0ff89e79cd598942be7d9bc9f892510f2d66474ceb59c645483a94131ccbbe09f1cf4eeaaa44879 SHA512 72ce91dfefc1c3e12cc8e965d90392cfed6c236daafb512aafc14cdad83242bfa0fc1adea308cd07a5483e010633e2996c3b239b2ce12cea47e6e21c36ed398b
+DIST opencv-4.5.4.tar.gz 89724634 BLAKE2B 76ce5ab8182c87e5f9e18faf62f2ee0eb629e4997877c59aa0f6ac334c27d737cf5205f4b85f64cabfdd587a57096fa3241ae6e48cebbd963ec8ad3ebe07ad35 SHA512 39a7af95bc30d427c6df5e5d481469ab1ceea7878a93ae5c119991333e877a88d0a644e17dc6bd316e64b2840e48411a97f1b2397a8000719c5cec32751fa954
+DIST opencv-4.5.4_contrib.tar.gz 61054226 BLAKE2B c553bfc6fd1b5fd17f562b27248ddd4bd946089cd8cce346f152b47d4a8a22faa35ceb9bd501c31901189b884d782fbfec1dc041d69e1b8cc0ac0d5d079e610e SHA512 a48d4b5d764170814d9027fdf50f61bb4a24f0b5a547dded79d06b948f86443f14734efc7bbb708b3870781cafc6bc9e3092d35dac34a81da2bf1740d5f93ff9
 DIST vgg_boostdesc-3.2.0.tar.gz 1867770 BLAKE2B 1fa5b58e73b6fa56ecf8d19af22298f729942ee1369082e173445d09d3de767bf844bad3d2b462efc1199c392f37c88ba49a9996ba8bfd84b4abeba7de94db63 SHA512 4a046aedd639c8eb4b295b0f499e756deb66210ca083f0124c75531e540663367cb58f6d175f66c4713324177036cd89a8869bdab2de8d1736dafc7f00ef9f44
 EBUILD opencv-4.5.0-r3.ebuild 20527 BLAKE2B c268b0a0e8c7e47a5b14af5dad3757c9df07096e285d23feb6c6b3af15138037c45f4bd7da104fa4a643b6329faa13e733bf76098b45a2db2efb60f96016746b SHA512 322e98d5a2ad73397880f27b03b9f3717d8387be382973d6ec4059ce7b87b7740e4c91f3180038651517800ad2d6868b90ab7df085d450d43f253aef9b4aadfb
 EBUILD opencv-4.5.1-r3.ebuild 20614 BLAKE2B 5377f4c1af0957ec9bc6f5d0ca83fa14977c4bbf5d0e2e2982c32bd9d3ea1f42ce5c9faec398010858109eaa3a04303141207573c5672ac749467e3f5b0c3fea SHA512 33a3028a698ddbeebd91afc006949cb4f1837df8fec4b20c6f5570dc3f65fac05bfa8109325bba8d26fa7faeece0b79974b7b9c6fd111a5e5a4189dfc0c58ba1
 EBUILD opencv-4.5.2-r3.ebuild 20667 BLAKE2B 1482e70d2c5dcaa6d568f6c4326eac12a5380433fb40267cd1961a83f4ea3a2ca2b2d2c4351b0304d9882a84b144d81a52a9da6ccc34fb05987356a8d21f6e86 SHA512 121fa6c8b4297290808ea1fd67d56dec075c96d90c7b60484294cc939fb5bd9595d6aa9cf833eefcd93f36ea31e1c3c032791a21074ebe6da460bc01fd2d0945
-EBUILD opencv-4.5.2-r5.ebuild 20673 BLAKE2B c403dd754baeb9205089c9b7743bdbf49e34c1d8c12e6a16a431dc32a430c984a948ba1e3b0043161f54b45db252ce6d9aa3fa01276462cfda54f8a4cba30210 SHA512 1290667db7132a004662d320bda45b068941ee4df535b29ad4cfa32a1646e32e97bc26fb168bb71ac61e60c7ad62e71c6d7d8a9eb388984bdf2541515847204c
+EBUILD opencv-4.5.2-r5.ebuild 20722 BLAKE2B 1eff4e40444049fa054ebe99b6675b9ae780310aaa85a678ac1216936773afffab32d372f181bbfc72bdd3ee86732639ae02383a16344a6fdb1a3bad55bec159 SHA512 c28a914751319a8fa7140838debba1d745fe09e4f2f6d5564549246c916f91b69446e823aa6262a7d94176d60404f37b271bf79299100f47d14a22a045ddc12b
+EBUILD opencv-4.5.4.ebuild 21209 BLAKE2B 88a04808917c5e68cf291714fc4cd7dace64b44cde914f15ef133848c282cf36b2069bf4649921ab71d7ee23ed1e8088d874f9d163da3e211bb4814770f83e01 SHA512 f0d2fdbc9df513a37c0278d3950c16363977a2c7cdc13986d708a9c47642a2b8afbd5c6adbcc627c6088d1115fa7de44a9fae65550c2f1eb359af1568c0f0f17
 MISC metadata.xml 3186 BLAKE2B 0293399368d675e350992184bcaad2de17e68aae0ea3fa15bb885ac975f14f0350efc5a00a17737be22cf8b5c0808b3853c77b66ff43294f443305ee188aaa06 SHA512 6d3ee73a3b78581b3e4f12287578cae84afa8747d2432fa436860c265ae92f1072cb83a1b41a2f80ed9141f4c097224df6280c78970d7d68e1c9baa92d383395
diff --git a/media-libs/opencv/files/opencv-4.5.2-lapack-3.10.patch b/media-libs/opencv/files/opencv-4.5.2-lapack-3.10.patch
new file mode 100644
index 000000000000..31e2fc60d121
--- /dev/null
+++ b/media-libs/opencv/files/opencv-4.5.2-lapack-3.10.patch
@@ -0,0 +1,123 @@
+https://bugs.gentoo.org/800539
+
+--- a/modules/core/src/hal_internal.cpp
++++ b/modules/core/src/hal_internal.cpp
+@@ -163,9 +163,9 @@
+         if(n == 1 && b_step == sizeof(fptype))
+         {
+             if(typeid(fptype) == typeid(float))
+-                sposv_(L, &m, &n, (float*)a, &lda, (float*)b, &m, &lapackStatus);
++                LAPACK_sposv_(L, &m, &n, (float*)a, &lda, (float*)b, &m, &lapackStatus);
+             else if(typeid(fptype) == typeid(double))
+-                dposv_(L, &m, &n, (double*)a, &lda, (double*)b, &m, &lapackStatus);
++                LAPACK_dposv_(L, &m, &n, (double*)a, &lda, (double*)b, &m, &lapackStatus);
+         }
+         else
+         {
+@@ -174,9 +174,9 @@
+             transpose(b, ldb, tmpB, m, m, n);
+ 
+             if(typeid(fptype) == typeid(float))
+-                sposv_(L, &m, &n, (float*)a, &lda, (float*)tmpB, &m, &lapackStatus);
++                LAPACK_sposv_(L, &m, &n, (float*)a, &lda, (float*)tmpB, &m, &lapackStatus);
+             else if(typeid(fptype) == typeid(double))
+-                dposv_(L, &m, &n, (double*)a, &lda, (double*)tmpB, &m, &lapackStatus);
++                LAPACK_dposv_(L, &m, &n, (double*)a, &lda, (double*)tmpB, &m, &lapackStatus);
+ 
+             transpose(tmpB, m, b, ldb, n, m);
+             delete[] tmpB;
+@@ -185,9 +185,9 @@
+     else
+     {
+         if(typeid(fptype) == typeid(float))
+-            spotrf_(L, &m, (float*)a, &lda, &lapackStatus);
++            LAPACK_spotrf_(L, &m, (float*)a, &lda, &lapackStatus);
+         else if(typeid(fptype) == typeid(double))
+-            dpotrf_(L, &m, (double*)a, &lda, &lapackStatus);
++            LAPACK_dpotrf_(L, &m, (double*)a, &lda, &lapackStatus);
+     }
+ 
+     if(lapackStatus == 0) *info = true;
+@@ -227,17 +227,17 @@
+     }
+ 
+     if(typeid(fptype) == typeid(float))
+-        sgesdd_(mode, &m, &n, (float*)a, &lda, (float*)w, (float*)u, &ldu, (float*)vt, &ldv, (float*)&work1, &lwork, iworkBuf, info);
++        LAPACK_sgesdd_(mode, &m, &n, (float*)a, &lda, (float*)w, (float*)u, &ldu, (float*)vt, &ldv, (float*)&work1, &lwork, iworkBuf, info);
+     else if(typeid(fptype) == typeid(double))
+-        dgesdd_(mode, &m, &n, (double*)a, &lda, (double*)w, (double*)u, &ldu, (double*)vt, &ldv, (double*)&work1, &lwork, iworkBuf, info);
++        LAPACK_dgesdd_(mode, &m, &n, (double*)a, &lda, (double*)w, (double*)u, &ldu, (double*)vt, &ldv, (double*)&work1, &lwork, iworkBuf, info);
+ 
+     lwork = (int)round(work1); //optimal buffer size
+     fptype* buffer = new fptype[lwork + 1];
+ 
+     if(typeid(fptype) == typeid(float))
+-        sgesdd_(mode, &m, &n, (float*)a, &lda, (float*)w, (float*)u, &ldu, (float*)vt, &ldv, (float*)buffer, &lwork, iworkBuf, info);
++        LAPACK_sgesdd_(mode, &m, &n, (float*)a, &lda, (float*)w, (float*)u, &ldu, (float*)vt, &ldv, (float*)buffer, &lwork, iworkBuf, info);
+     else if(typeid(fptype) == typeid(double))
+-        dgesdd_(mode, &m, &n, (double*)a, &lda, (double*)w, (double*)u, &ldu, (double*)vt, &ldv, (double*)buffer, &lwork, iworkBuf, info);
++        LAPACK_dgesdd_(mode, &m, &n, (double*)a, &lda, (double*)w, (double*)u, &ldu, (double*)vt, &ldv, (double*)buffer, &lwork, iworkBuf, info);
+ 
+     if(!(flags & CV_HAL_SVD_NO_UV))
+         transpose_square_inplace(vt, ldv, n);
+@@ -288,18 +288,18 @@
+         if (k == 1 && b_step == sizeof(fptype))
+         {
+             if (typeid(fptype) == typeid(float))
+-                sgels_(mode, &m, &n, &k, (float*)tmpA, &ldtmpA, (float*)b, &m, (float*)&work1, &lwork, info);
++                LAPACK_sgels_(mode, &m, &n, &k, (float*)tmpA, &ldtmpA, (float*)b, &m, (float*)&work1, &lwork, info);
+             else if (typeid(fptype) == typeid(double))
+-                dgels_(mode, &m, &n, &k, (double*)tmpA, &ldtmpA, (double*)b, &m, (double*)&work1, &lwork, info);
++                LAPACK_dgels_(mode, &m, &n, &k, (double*)tmpA, &ldtmpA, (double*)b, &m, (double*)&work1, &lwork, info);
+ 
+             lwork = cvRound(work1); //optimal buffer size
+             std::vector<fptype> workBufMemHolder(lwork + 1);
+             fptype* buffer = &workBufMemHolder.front();
+ 
+             if (typeid(fptype) == typeid(float))
+-                sgels_(mode, &m, &n, &k, (float*)tmpA, &ldtmpA, (float*)b, &m, (float*)buffer, &lwork, info);
++                LAPACK_sgels_(mode, &m, &n, &k, (float*)tmpA, &ldtmpA, (float*)b, &m, (float*)buffer, &lwork, info);
+             else if (typeid(fptype) == typeid(double))
+-                dgels_(mode, &m, &n, &k, (double*)tmpA, &ldtmpA, (double*)b, &m, (double*)buffer, &lwork, info);
++                LAPACK_dgels_(mode, &m, &n, &k, (double*)tmpA, &ldtmpA, (double*)b, &m, (double*)buffer, &lwork, info);
+         }
+         else
+         {
+@@ -309,18 +309,18 @@
+             transpose(b, ldb, tmpB, m, m, k);
+ 
+             if (typeid(fptype) == typeid(float))
+-                sgels_(mode, &m, &n, &k, (float*)tmpA, &ldtmpA, (float*)tmpB, &m, (float*)&work1, &lwork, info);
++                LAPACK_sgels_(mode, &m, &n, &k, (float*)tmpA, &ldtmpA, (float*)tmpB, &m, (float*)&work1, &lwork, info);
+             else if (typeid(fptype) == typeid(double))
+-                dgels_(mode, &m, &n, &k, (double*)tmpA, &ldtmpA, (double*)tmpB, &m, (double*)&work1, &lwork, info);
++                LAPACK_dgels_(mode, &m, &n, &k, (double*)tmpA, &ldtmpA, (double*)tmpB, &m, (double*)&work1, &lwork, info);
+ 
+             lwork = cvRound(work1); //optimal buffer size
+             std::vector<fptype> workBufMemHolder(lwork + 1);
+             fptype* buffer = &workBufMemHolder.front();
+ 
+             if (typeid(fptype) == typeid(float))
+-                sgels_(mode, &m, &n, &k, (float*)tmpA, &ldtmpA, (float*)tmpB, &m, (float*)buffer, &lwork, info);
++                LAPACK_sgels_(mode, &m, &n, &k, (float*)tmpA, &ldtmpA, (float*)tmpB, &m, (float*)buffer, &lwork, info);
+             else if (typeid(fptype) == typeid(double))
+-                dgels_(mode, &m, &n, &k, (double*)tmpA, &ldtmpA, (double*)tmpB, &m, (double*)buffer, &lwork, info);
++                LAPACK_dgels_(mode, &m, &n, &k, (double*)tmpA, &ldtmpA, (double*)tmpB, &m, (double*)buffer, &lwork, info);
+ 
+             transpose(tmpB, m, b, ldb, k, m);
+         }
+--- a/cmake/checks/lapack_check.cpp
++++ b/cmake/checks/lapack_check.cpp
+@@ -2,9 +2,9 @@
+ #include "opencv_lapack.h"
+ 
+ static char* check_fn1 = (char*)sgesv_;
+-static char* check_fn2 = (char*)sposv_;
+-static char* check_fn3 = (char*)spotrf_;
+-static char* check_fn4 = (char*)sgesdd_;
++static char* check_fn2 = (char*)LAPACK_sposv_;
++static char* check_fn3 = (char*)LAPACK_spotrf_;
++static char* check_fn4 = (char*)LAPACK_sgesdd_;
+ 
+ int main(int argc, char* argv[])
+ {
diff --git a/media-libs/opencv/opencv-4.5.2-r5.ebuild b/media-libs/opencv/opencv-4.5.2-r5.ebuild
index 773e61c6fb4a..21f9624b9049 100644
--- a/media-libs/opencv/opencv-4.5.2-r5.ebuild
+++ b/media-libs/opencv/opencv-4.5.2-r5.ebuild
@@ -21,7 +21,7 @@ SRC_URI="https://github.com/${PN}/${PN}/archive/${PV}.tar.gz -> ${P}.tar.gz
 
 LICENSE="Apache-2.0"
 SLOT="0/${PV}" # subslot = libopencv* soname version
-KEYWORDS="~amd64 ~arm ~arm64 ~ppc ~ppc64 ~riscv ~x86"
+KEYWORDS="amd64 ~arm arm64 ~ppc ~ppc64 ~riscv x86"
 IUSE="contrib contribcvv contribdnn contribfreetype contribhdf contribovis contribsfm contribxfeatures2d cuda debug dnnsamples download +eigen examples +features2d ffmpeg gdal gflags glog gphoto2 gstreamer gtk3 ieee1394 jpeg jpeg2k lapack lto opencl openexr opengl openmp opencvapps png +python qt5 tesseract testprograms threads tiff vaapi v4l vtk webp xine"
 
 # The following lines are shamelessly stolen from ffmpeg-9999.ebuild with modifications
@@ -118,7 +118,7 @@ RDEPEND="
 	jpeg2k? ( media-libs/openjpeg:2=[${MULTILIB_USEDEP}] )
 	lapack? (
 		virtual/cblas
-		virtual/lapack
+		>=virtual/lapack-3.10
 	)
 	opencl? ( virtual/opencl[${MULTILIB_USEDEP}] )
 	openexr? ( <media-libs/openexr-3.0.0:0=[${MULTILIB_USEDEP}] )
@@ -283,6 +283,7 @@ PATCHES=(
 	"${FILESDIR}"/${PN}-4.1.2-opencl-license.patch
 	"${FILESDIR}"/${PN}-4.4.0-disable-native-cpuflag-detect.patch
 	"${FILESDIR}"/${PN}-4.5.0-link-with-cblas-for-lapack.patch
+	"${FILESDIR}"/${PN}-4.5.2-lapack-3.10.patch
 )
 
 pkg_pretend() {
diff --git a/media-libs/opencv/opencv-4.5.4.ebuild b/media-libs/opencv/opencv-4.5.4.ebuild
new file mode 100644
index 000000000000..55c89688fe82
--- /dev/null
+++ b/media-libs/opencv/opencv-4.5.4.ebuild
@@ -0,0 +1,582 @@
+# Copyright 1999-2021 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=7
+
+PYTHON_COMPAT=( python3_{8..10} )
+CMAKE_ECLASS=cmake
+inherit java-pkg-opt-2 java-ant-2 cmake-multilib python-r1 toolchain-funcs
+
+DESCRIPTION="A collection of algorithms and sample code for various computer vision problems"
+HOMEPAGE="https://opencv.org"
+TINY_DNN_PV="1.0.0a3"
+SRC_URI="https://github.com/${PN}/${PN}/archive/${PV}.tar.gz -> ${P}.tar.gz
+	dnnsamples? ( https://dev.gentoo.org/~amynka/snap/${PN}-3.4.0-res10_300x300-caffeemodel.tar.gz )
+	download? ( https://github.com/rossbridger/opencv-extdep/archive/4.4.0.tar.gz -> ${PN}-4.4.0_extdep.tar.gz )
+	contrib? (
+		https://github.com/${PN}/${PN}_contrib/archive/${PV}.tar.gz -> ${P}_contrib.tar.gz
+		contribdnn? ( https://dev.gentoo.org/~amynka/snap/${PN}-3.4.0-face_landmark_model.tar.gz )
+		contribxfeatures2d? ( https://dev.gentoo.org/~amynka/snap/vgg_boostdesc-3.2.0.tar.gz )
+	)"
+
+LICENSE="Apache-2.0"
+SLOT="0/${PV}" # subslot = libopencv* soname version
+KEYWORDS="~amd64 ~arm ~arm64 ~ppc ~ppc64 ~riscv ~x86"
+IUSE="contrib contribcvv contribdnn contribfreetype contribhdf contribovis contribsfm contribxfeatures2d cuda debug dnnsamples download +eigen examples +features2d ffmpeg gdal gflags glog gphoto2 gstreamer gtk3 ieee1394 jpeg jpeg2k lapack lto opencl openexr opengl openmp opencvapps png +python qt5 tesseract testprograms threads tiff vaapi v4l vtk webp xine"
+
+# The following lines are shamelessly stolen from ffmpeg-9999.ebuild with modifications
+ARM_CPU_FEATURES=(
+	cpu_flags_arm_neon:NEON
+	cpu_flags_arm_vfpv3:VFPV3
+)
+PPC_CPU_FEATURES=(
+	cpu_flags_ppc_vsx:VSX
+	cpu_flags_ppc_vsx3:VSX3
+)
+X86_CPU_FEATURES_RAW=(
+	avx:AVX
+	avx2:AVX2
+	avx512f:AVX_512F
+	f16c:FP16
+	fma3:FMA3
+	popcnt:POPCNT
+	sse:SSE
+	sse2:SSE2
+	sse3:SSE3
+	ssse3:SSSE3
+	sse4_1:SSE4_1
+	sse4_2:SSE4_2
+)
+X86_CPU_FEATURES=( ${X86_CPU_FEATURES_RAW[@]/#/cpu_flags_x86_} )
+CPU_FEATURES_MAP=(
+	${ARM_CPU_FEATURES[@]}
+	${PPC_CPU_FEATURES[@]}
+	${X86_CPU_FEATURES[@]}
+)
+IUSE="${IUSE} ${CPU_FEATURES_MAP[@]%:*}"
+
+# OpenGL needs gtk or Qt installed to activate, otherwise build system
+# will silently disable it Wwithout the user knowing, which defeats the
+# purpose of the opengl use flag.
+# cuda needs contrib, bug #701712
+REQUIRED_USE="
+	cpu_flags_x86_avx2? ( cpu_flags_x86_f16c )
+	cpu_flags_x86_f16c? ( cpu_flags_x86_avx )
+	cuda? ( contrib
+		tesseract? ( opencl ) )
+	dnnsamples? ( examples )
+	gflags? ( contrib )
+	glog? ( contrib )
+	contribcvv? ( contrib qt5 )
+	contribdnn? ( contrib )
+	contribfreetype? ( contrib )
+	contribhdf? ( contrib )
+	contribovis? ( contrib )
+	contribsfm? ( contrib eigen gflags glog )
+	contribxfeatures2d? ( contrib download )
+	examples? ( contribdnn )
+	java? ( python )
+	opengl? ( qt5 )
+	python? ( ${PYTHON_REQUIRED_USE} )
+	tesseract? ( contrib )
+	?? ( gtk3 qt5 )"
+
+# The following logic is intrinsic in the build system, but we do not enforce
+# it on the useflags since this just blocks emerging pointlessly:
+#	openmp? ( !threads )
+
+RDEPEND="
+	app-arch/bzip2[${MULTILIB_USEDEP}]
+	dev-libs/protobuf:=[${MULTILIB_USEDEP}]
+	sys-libs/zlib[${MULTILIB_USEDEP}]
+	cuda? ( dev-util/nvidia-cuda-toolkit:0= )
+	contribhdf? ( sci-libs/hdf5:= )
+	contribfreetype? (
+		media-libs/freetype:2[${MULTILIB_USEDEP}]
+		media-libs/harfbuzz:=[${MULTILIB_USEDEP}]
+	)
+	contribovis? ( dev-games/ogre:0/1.12 )
+	ffmpeg? ( media-video/ffmpeg:0=[${MULTILIB_USEDEP}] )
+	gdal? ( sci-libs/gdal:= )
+	gflags? ( dev-cpp/gflags[${MULTILIB_USEDEP}] )
+	glog? ( dev-cpp/glog[${MULTILIB_USEDEP}] )
+	gphoto2? ( media-libs/libgphoto2:=[${MULTILIB_USEDEP}] )
+	gstreamer? (
+		media-libs/gstreamer:1.0[${MULTILIB_USEDEP}]
+		media-libs/gst-plugins-base:1.0[${MULTILIB_USEDEP}]
+	)
+	gtk3? (
+		dev-libs/glib:2[${MULTILIB_USEDEP}]
+		x11-libs/gtk+:3[${MULTILIB_USEDEP}]
+	)
+	ieee1394? (
+		media-libs/libdc1394:=[${MULTILIB_USEDEP}]
+		sys-libs/libraw1394[${MULTILIB_USEDEP}]
+	)
+	java? ( >=virtual/jre-1.8:* )
+	jpeg? ( virtual/jpeg:0[${MULTILIB_USEDEP}] )
+	jpeg2k? ( media-libs/openjpeg:2=[${MULTILIB_USEDEP}] )
+	lapack? (
+		virtual/cblas
+		>=virtual/lapack-3.10
+	)
+	opencl? ( virtual/opencl[${MULTILIB_USEDEP}] )
+	openexr? ( <media-libs/openexr-3.0.0:0=[${MULTILIB_USEDEP}] )
+	opengl? (
+		virtual/opengl[${MULTILIB_USEDEP}]
+		virtual/glu[${MULTILIB_USEDEP}]
+	)
+	png? ( media-libs/libpng:0=[${MULTILIB_USEDEP}] )
+	python? (
+		${PYTHON_DEPS}
+		dev-python/numpy[${PYTHON_USEDEP}]
+	)
+	qt5? (
+		dev-qt/qtgui:5=
+		dev-qt/qtwidgets:5=
+		dev-qt/qttest:5=
+		dev-qt/qtconcurrent:5=
+		opengl? ( dev-qt/qtopengl:5= )
+	)
+	tesseract? ( app-text/tesseract[opencl=,${MULTILIB_USEDEP}] )
+	threads? ( dev-cpp/tbb:=[${MULTILIB_USEDEP}] )
+	tiff? ( media-libs/tiff:0[${MULTILIB_USEDEP}] )
+	v4l? ( >=media-libs/libv4l-0.8.3[${MULTILIB_USEDEP}] )
+	vaapi? ( x11-libs/libva[${MULTILIB_USEDEP}] )
+	vtk? ( sci-libs/vtk[rendering] )
+	webp? ( media-libs/libwebp:=[${MULTILIB_USEDEP}] )
+	xine? ( media-libs/xine-lib )"
+# bug #747949 for eigen (eigen-3.3.8 was broken upstream)
+DEPEND="${RDEPEND}
+	eigen? (
+		|| (
+			>=dev-cpp/eigen-3.3.8-r1:3
+			<dev-cpp/eigen-3.3.8:3
+		)
+	)
+	java? ( >=virtual/jdk-1.8:* )"
+BDEPEND="virtual/pkgconfig"
+
+MULTILIB_WRAPPED_HEADERS=(
+	# [opencv4]
+	/usr/include/opencv4/opencv2/cvconfig.h
+	/usr/include/opencv4/opencv2/opencv_modules.hpp
+	# [cudev]
+	/usr/include/opencv4/opencv2/cudaarithm.hpp
+	/usr/include/opencv4/opencv2/cudabgsegm.hpp
+	/usr/include/opencv4/opencv2/cudacodec.hpp
+	/usr/include/opencv4/opencv2/cudafeatures2d.hpp
+	/usr/include/opencv4/opencv2/cudafilters.hpp
+	/usr/include/opencv4/opencv2/cudaimgproc.hpp
+	/usr/include/opencv4/opencv2/cudalegacy.hpp
+	/usr/include/opencv4/opencv2/cudalegacy/NCVBroxOpticalFlow.hpp
+	/usr/include/opencv4/opencv2/cudalegacy/NCVHaarObjectDetection.hpp
+	/usr/include/opencv4/opencv2/cudalegacy/NCV.hpp
+	/usr/include/opencv4/opencv2/cudalegacy/NCVPyramid.hpp
+	/usr/include/opencv4/opencv2/cudalegacy/NPP_staging.hpp
+	/usr/include/opencv4/opencv2/cudaobjdetect.hpp
+	/usr/include/opencv4/opencv2/cudaoptflow.hpp
+	/usr/include/opencv4/opencv2/cudastereo.hpp
+	/usr/include/opencv4/opencv2/cudawarping.hpp
+	/usr/include/opencv4/opencv2/cudev/block/block.hpp
+	/usr/include/opencv4/opencv2/cudev/block/detail/reduce.hpp
+	/usr/include/opencv4/opencv2/cudev/block/detail/reduce_key_val.hpp
+	/usr/include/opencv4/opencv2/cudev/block/dynamic_smem.hpp
+	/usr/include/opencv4/opencv2/cudev/block/reduce.hpp
+	/usr/include/opencv4/opencv2/cudev/block/scan.hpp
+	/usr/include/opencv4/opencv2/cudev/block/vec_distance.hpp
+	/usr/include/opencv4/opencv2/cudev/common.hpp
+	/usr/include/opencv4/opencv2/cudev/expr/binary_func.hpp
+	/usr/include/opencv4/opencv2/cudev/expr/binary_op.hpp
+	/usr/include/opencv4/opencv2/cudev/expr/color.hpp
+	/usr/include/opencv4/opencv2/cudev/expr/deriv.hpp
+	/usr/include/opencv4/opencv2/cudev/expr/expr.hpp
+	/usr/include/opencv4/opencv2/cudev/expr/per_element_func.hpp
+	/usr/include/opencv4/opencv2/cudev/expr/reduction.hpp
+	/usr/include/opencv4/opencv2/cudev/expr/unary_func.hpp
+	/usr/include/opencv4/opencv2/cudev/expr/unary_op.hpp
+	/usr/include/opencv4/opencv2/cudev/expr/warping.hpp
+	/usr/include/opencv4/opencv2/cudev/functional/color_cvt.hpp
+	/usr/include/opencv4/opencv2/cudev/functional/detail/color_cvt.hpp
+	/usr/include/opencv4/opencv2/cudev/functional/functional.hpp
+	/usr/include/opencv4/opencv2/cudev/functional/tuple_adapter.hpp
+	/usr/include/opencv4/opencv2/cudev/grid/copy.hpp
+	/usr/include/opencv4/opencv2/cudev/grid/detail/copy.hpp
+	/usr/include/opencv4/opencv2/cudev/grid/detail/histogram.hpp
+	/usr/include/opencv4/opencv2/cudev/grid/detail/integral.hpp
+	/usr/include/opencv4/opencv2/cudev/grid/detail/minmaxloc.hpp
+	/usr/include/opencv4/opencv2/cudev/grid/detail/pyr_down.hpp
+	/usr/include/opencv4/opencv2/cudev/grid/detail/pyr_up.hpp
+	/usr/include/opencv4/opencv2/cudev/grid/detail/reduce.hpp
+	/usr/include/opencv4/opencv2/cudev/grid/detail/reduce_to_column.hpp
+	/usr/include/opencv4/opencv2/cudev/grid/detail/reduce_to_row.hpp
+	/usr/include/opencv4/opencv2/cudev/grid/detail/split_merge.hpp
+	/usr/include/opencv4/opencv2/cudev/grid/detail/transform.hpp
+	/usr/include/opencv4/opencv2/cudev/grid/detail/transpose.hpp
+	/usr/include/opencv4/opencv2/cudev/grid/histogram.hpp
+	/usr/include/opencv4/opencv2/cudev/grid/integral.hpp
+	/usr/include/opencv4/opencv2/cudev/grid/pyramids.hpp
+	/usr/include/opencv4/opencv2/cudev/grid/reduce.hpp
+	/usr/include/opencv4/opencv2/cudev/grid/reduce_to_vec.hpp
+	/usr/include/opencv4/opencv2/cudev/grid/split_merge.hpp
+	/usr/include/opencv4/opencv2/cudev/grid/transform.hpp
+	/usr/include/opencv4/opencv2/cudev/grid/transpose.hpp
+	/usr/include/opencv4/opencv2/cudev.hpp
+	/usr/include/opencv4/opencv2/cudev/ptr2d/constant.hpp
+	/usr/include/opencv4/opencv2/cudev/ptr2d/deriv.hpp
+	/usr/include/opencv4/opencv2/cudev/ptr2d/detail/gpumat.hpp
+	/usr/include/opencv4/opencv2/cudev/ptr2d/extrapolation.hpp
+	/usr/include/opencv4/opencv2/cudev/ptr2d/glob.hpp
+	/usr/include/opencv4/opencv2/cudev/ptr2d/gpumat.hpp
+	/usr/include/opencv4/opencv2/cudev/ptr2d/interpolation.hpp
+	/usr/include/opencv4/opencv2/cudev/ptr2d/lut.hpp
+	/usr/include/opencv4/opencv2/cudev/ptr2d/mask.hpp
+	/usr/include/opencv4/opencv2/cudev/ptr2d/remap.hpp
+	/usr/include/opencv4/opencv2/cudev/ptr2d/resize.hpp
+	/usr/include/opencv4/opencv2/cudev/ptr2d/texture.hpp
+	/usr/include/opencv4/opencv2/cudev/ptr2d/traits.hpp
+	/usr/include/opencv4/opencv2/cudev/ptr2d/transform.hpp
+	/usr/include/opencv4/opencv2/cudev/ptr2d/warping.hpp
+	/usr/include/opencv4/opencv2/cudev/ptr2d/zip.hpp
+	/usr/include/opencv4/opencv2/cudev/util/atomic.hpp
+	/usr/include/opencv4/opencv2/cudev/util/detail/tuple.hpp
+	/usr/include/opencv4/opencv2/cudev/util/detail/type_traits.hpp
+	/usr/include/opencv4/opencv2/cudev/util/limits.hpp
+	/usr/include/opencv4/opencv2/cudev/util/saturate_cast.hpp
+	/usr/include/opencv4/opencv2/cudev/util/simd_functions.hpp
+	/usr/include/opencv4/opencv2/cudev/util/tuple.hpp
+	/usr/include/opencv4/opencv2/cudev/util/type_traits.hpp
+	/usr/include/opencv4/opencv2/cudev/util/vec_math.hpp
+	/usr/include/opencv4/opencv2/cudev/util/vec_traits.hpp
+	/usr/include/opencv4/opencv2/cudev/warp/detail/reduce.hpp
+	/usr/include/opencv4/opencv2/cudev/warp/detail/reduce_key_val.hpp
+	/usr/include/opencv4/opencv2/cudev/warp/reduce.hpp
+	/usr/include/opencv4/opencv2/cudev/warp/scan.hpp
+	/usr/include/opencv4/opencv2/cudev/warp/shuffle.hpp
+	/usr/include/opencv4/opencv2/cudev/warp/warp.hpp
+	# [contrib_cvv]
+	/usr/include/opencv4/opencv2/cvv/call_meta_data.hpp
+	/usr/include/opencv4/opencv2/cvv/cvv.hpp
+	/usr/include/opencv4/opencv2/cvv/debug_mode.hpp
+	/usr/include/opencv4/opencv2/cvv/dmatch.hpp
+	/usr/include/opencv4/opencv2/cvv/filter.hpp
+	/usr/include/opencv4/opencv2/cvv/final_show.hpp
+	/usr/include/opencv4/opencv2/cvv.hpp
+	/usr/include/opencv4/opencv2/cvv/show_image.hpp
+	# [contrib_hdf]
+	/usr/include/opencv4/opencv2/hdf/hdf5.hpp
+	/usr/include/opencv4/opencv2/hdf.hpp
+	# [contrib_ovis]
+	/usr/include/opencv4/opencv2/ovis.hpp
+	# [contrib_sfm]
+	/usr/include/opencv4/opencv2/sfm.hpp
+	/usr/include/opencv4/opencv2/sfm/conditioning.hpp
+	/usr/include/opencv4/opencv2/sfm/fundamental.hpp
+	/usr/include/opencv4/opencv2/sfm/io.hpp
+	/usr/include/opencv4/opencv2/sfm/numeric.hpp
+	/usr/include/opencv4/opencv2/sfm/projection.hpp
+	/usr/include/opencv4/opencv2/sfm/reconstruct.hpp
+	/usr/include/opencv4/opencv2/sfm/robust.hpp
+	/usr/include/opencv4/opencv2/sfm/simple_pipeline.hpp
+	/usr/include/opencv4/opencv2/sfm/triangulation.hpp
+	# [vtk]
+	/usr/include/opencv4/opencv2/viz.hpp
+	/usr/include/opencv4/opencv2/viz/types.hpp
+	/usr/include/opencv4/opencv2/viz/viz3d.hpp
+	/usr/include/opencv4/opencv2/viz/vizcore.hpp
+	/usr/include/opencv4/opencv2/viz/widget_accessor.hpp
+	/usr/include/opencv4/opencv2/viz/widgets.hpp
+)
+
+PATCHES=(
+	"${FILESDIR}"/${PN}-3.4.0-disable-download.patch
+	"${FILESDIR}"/${PN}-3.4.1-cuda-add-relaxed-constexpr.patch
+	"${FILESDIR}"/${PN}-4.1.2-opencl-license.patch
+	"${FILESDIR}"/${PN}-4.4.0-disable-native-cpuflag-detect.patch
+	"${FILESDIR}"/${PN}-4.5.0-link-with-cblas-for-lapack.patch
+	"${FILESDIR}"/${PN}-4.5.2-lapack-3.10.patch
+)
+
+pkg_pretend() {
+	[[ ${MERGE_TYPE} != binary ]] && use openmp && tc-check-openmp
+}
+
+pkg_setup() {
+	[[ ${MERGE_TYPE} != binary ]] && use openmp && tc-check-openmp
+	java-pkg-opt-2_pkg_setup
+}
+
+src_prepare() {
+	cmake_src_prepare
+
+	# remove bundled stuff
+	rm -r 3rdparty || die "Removing 3rd party components failed"
+	sed -e '/add_subdirectory(.*3rdparty.*)/ d' \
+		-i CMakeLists.txt cmake/*cmake || die
+
+	if use dnnsamples; then
+		mv  "${WORKDIR}/res10_300x300_ssd_iter_140000.caffemodel" "${WORKDIR}/${P}/samples/dnn/" || die
+	fi
+
+	if use contrib; then
+		cd  "${WORKDIR}/${PN}_contrib-${PV}" || die
+		if use contribxfeatures2d; then
+			mv "${WORKDIR}"/*.i "${WORKDIR}/${PN}_contrib-${PV}"/modules/xfeatures2d/src/ || die
+		fi
+	fi
+
+	if use download; then
+		mv "${WORKDIR}/${PN}-extdep-4.4.0" "${WORKDIR}/${P}/.cache/" || die
+	fi
+
+	java-pkg-opt-2_src_prepare
+
+	# this really belongs in src_prepare() too
+	JAVA_ANT_ENCODING="iso-8859-1"
+	# set encoding so even this cmake build will pick it up.
+	export ANT_OPTS+=" -Dfile.encoding=iso-8859-1"
+	java-ant-2_src_configure
+}
+
+multilib_src_configure() {
+	# please dont sort here, order is the same as in CMakeLists.txt
+	GLOBALCMAKEARGS=(
+	# Optional 3rd party components
+	# ===================================================
+		-DENABLE_DOWNLOAD=$(usex download)
+		-DWITH_QUIRC=OFF # Do not have dependencies
+		-DWITH_1394=$(usex ieee1394)
+	#	-DWITH_AVFOUNDATION=OFF # IOS
+		-DWITH_VTK=$(multilib_native_usex vtk)
+		-DWITH_EIGEN=$(usex eigen)
+		-DWITH_VFW=OFF # Video windows support
+		-DWITH_FFMPEG=$(usex ffmpeg)
+		-DWITH_GSTREAMER=$(usex gstreamer)
+		-DWITH_GSTREAMER_0_10=OFF	# Don't want this
+		-DWITH_GTK=$(usex gtk3)
+		-DWITH_GTK_2_X=OFF # only want gtk3 nowadays
+		-DWITH_IPP=OFF
+		# Jasper was removed from tree because of security problems.
+		# Upstream were/are making progress. We use openjpeg instead.
+		# bug 734284
+		-DWITH_JASPER=OFF
+		-DWITH_JPEG=$(usex jpeg)
+		-DWITH_OPENJPEG=$(usex jpeg2k)
+		-DWITH_WEBP=$(usex webp)
+		-DWITH_OPENEXR=$(usex openexr)
+		-DWITH_OPENGL=$(usex opengl)
+		-DWITH_OPENVX=OFF
+		-DWITH_OPENNI=OFF	# Not packaged
+		-DWITH_OPENNI2=OFF	# Not packaged
+		-DWITH_PNG=$(usex png)
+		-DWITH_GDCM=OFF
+		-DWITH_PVAPI=OFF
+		-DWITH_GIGEAPI=OFF
+		-DWITH_ARAVIS=OFF
+		-DWITH_QT=$(multilib_native_usex qt5 5 OFF)
+		-DWITH_WIN32UI=OFF		# Windows only
+	#	-DWITH_QUICKTIME=OFF
+	#	-DWITH_QTKIT=OFF
+		-DWITH_TBB=$(usex threads)
+		-DWITH_OPENMP=$(usex openmp)
+		-DWITH_CSTRIPES=OFF
+		-DWITH_PTHREADS_PF=ON
+		-DWITH_TIFF=$(usex tiff)
+		-DWITH_UNICAP=OFF		# Not packaged
+		-DWITH_V4L=$(usex v4l)
+		-DWITH_LIBV4L=$(usex v4l)
+	#	-DWITH_DSHOW=ON			# direct show supp
+		-DWITH_MSMF=OFF
+		-DWITH_XIMEA=OFF	# Windows only
+		-DWITH_XINE=$(multilib_native_usex xine)
+		-DWITH_CLP=OFF
+		-DWITH_OPENCL=$(usex opencl)
+		-DWITH_OPENCL_SVM=OFF
+		-DWITH_OPENCLAMDFFT=$(usex opencl)
+		-DWITH_OPENCLAMDBLAS=$(usex opencl)
+		-DWITH_DIRECTX=OFF
+		-DWITH_INTELPERC=OFF
+		-DWITH_IPP_A=OFF
+		-DWITH_MATLAB=OFF
+		-DWITH_VA=$(usex vaapi)
+		-DWITH_VA_INTEL=$(usex vaapi)
+		-DWITH_GDAL=$(multilib_native_usex gdal)
+		-DWITH_GPHOTO2=$(usex gphoto2)
+		-DWITH_LAPACK=$(multilib_native_usex lapack)
+		-DWITH_ITT=OFF # 3dparty libs itt_notify
+	# ===================================================
+	# CUDA build components: nvidia-cuda-toolkit takes care of GCC version
+	# ===================================================
+		-DWITH_CUDA=$(multilib_native_usex cuda)
+		-DWITH_CUBLAS=$(multilib_native_usex cuda)
+		-DWITH_CUFFT=$(multilib_native_usex cuda)
+		-DWITH_NVCUVID=OFF
+	#	-DWITH_NVCUVID=$(usex cuda)
+		-DCUDA_NPP_LIBRARY_ROOT_DIR=$(usex cuda "${EPREFIX}/opt/cuda" "")
+	# ===================================================
+	# OpenCV build components
+	# ===================================================
+		-DBUILD_SHARED_LIBS=ON
+		-DBUILD_JAVA=$(multilib_native_usex java) # Ant needed, no compile flag
+		-DBUILD_ANDROID_EXAMPLES=OFF
+		-DBUILD_opencv_apps=$(usex opencvapps ON OFF)
+		-DBUILD_DOCS=OFF # Doesn't install anyways.
+		-DBUILD_EXAMPLES=$(multilib_native_usex examples)
+		-DBUILD_PERF_TESTS=OFF
+		-DBUILD_TESTS=$(multilib_native_usex testprograms)
+		-DBUILD_WITH_DEBUG_INFO=$(usex debug)
+	#	-DBUILD_WITH_STATIC_CRT=OFF
+		-DBUILD_WITH_DYNAMIC_IPP=OFF
+		-DBUILD_FAT_JAVA_LIB=OFF
+	#	-DBUILD_ANDROID_SERVICE=OFF
+		-DBUILD_CUDA_STUBS=$(multilib_native_usex cuda)
+		-DOPENCV_EXTRA_MODULES_PATH=$(usex contrib "${WORKDIR}/opencv_contrib-${PV}/modules" "")
+	# ===================================================
+	# OpenCV installation options
+	# ===================================================
+		-DINSTALL_CREATE_DISTRIB=OFF
+		-DINSTALL_C_EXAMPLES=$(multilib_native_usex examples)
+		-DINSTALL_TESTS=$(multilib_native_usex testprograms)
+		-DINSTALL_PYTHON_EXAMPLES=$(multilib_native_usex examples)
+	#	-DINSTALL_ANDROID_EXAMPLES=OFF
+		-DINSTALL_TO_MANGLED_PATHS=OFF
+		-DOPENCV_GENERATE_PKGCONFIG=ON
+		# opencv uses both ${CMAKE_INSTALL_LIBDIR} and ${LIB_SUFFIX}
+		# to set its destination libdir
+		-DLIB_SUFFIX=
+	# ===================================================
+	# OpenCV build options
+	# ===================================================
+		-DENABLE_CCACHE=OFF
+		# bug 733796, but PCH is a risky game in CMake anyway
+		-DENABLE_PRECOMPILED_HEADERS=OFF
+		-DENABLE_SOLUTION_FOLDERS=OFF
+		-DENABLE_PROFILING=OFF
+		-DENABLE_COVERAGE=OFF
+
+		-DHAVE_opencv_java=$(multilib_native_usex java YES NO)
+		-DENABLE_NOISY_WARNINGS=OFF
+		-DOPENCV_WARNINGS_ARE_ERRORS=OFF
+		-DENABLE_IMPL_COLLECTION=OFF
+		-DENABLE_INSTRUMENTATION=OFF
+		-DGENERATE_ABI_DESCRIPTOR=OFF
+		-DDOWNLOAD_EXTERNAL_TEST_DATA=OFF
+		-DENABLE_LTO=$(usex lto)
+	# ===================================================
+	# things we want to be hard off or not yet figured out
+	# ===================================================
+		-DBUILD_PACKAGE=OFF
+	# ===================================================
+	# Not building protobuf but update files bug #631418
+	# ===================================================
+		-DBUILD_PROTOBUF=OFF
+		-DPROTOBUF_UPDATE_FILES=ON
+	# ===================================================
+	# things we want to be hard enabled not worth useflag
+	# ===================================================
+		-DCMAKE_SKIP_RPATH=ON
+		-DOPENCV_DOC_INSTALL_PATH=
+		-DBUILD_opencv_features2d=$(usex features2d ON OFF)
+	)
+
+	# ==================================================
+	# cpu flags, should solve 633900
+	#===================================================
+	local CPU_BASELINE=""
+	for i in "${CPU_FEATURES_MAP[@]}" ; do
+		if [[ ${ABI} != x86 || ${i%:*} != "cpu_flags_x86_avx2" ]]; then # workaround for Bug 747163
+			use ${i%:*} && CPU_BASELINE="${CPU_BASELINE}${i#*:};"
+		fi
+	done
+
+	GLOBALCMAKEARGS+=(
+		-DOPENCV_CPU_OPT_IMPLIES_IGNORE=ON
+		-DCPU_BASELINE=${CPU_BASELINE}
+		-DCPU_DISPATCH=
+	)
+
+	# ===================================================
+	# OpenCV Contrib Modules
+	# ===================================================
+	if use contrib; then
+		GLOBALCMAKEARGS+=(
+			-DBUILD_opencv_dnn=$(usex contribdnn ON OFF)
+			-DTINYDNN_ROOT="${WORKDIR}/tiny-dnn-${TINY_DNN_PV}"
+			-DBUILD_opencv_dnns_easily_fooled=OFF
+			-DBUILD_opencv_xfeatures2d=$(usex contribxfeatures2d ON OFF)
+			-DBUILD_opencv_cvv=$(usex contribcvv ON OFF)
+			-DBUILD_opencv_hdf=$(multilib_native_usex contribhdf ON OFF)
+			-DBUILD_opencv_sfm=$(usex contribsfm ON OFF)
+			-DBUILD_opencv_freetype=$(usex contribfreetype ON OFF)
+			-DBUILD_opencv_ovis=$(usex contribovis ON OFF)
+		)
+
+		if multilib_is_native_abi; then
+			GLOBALCMAKEARGS+=(
+				-DCMAKE_DISABLE_FIND_PACKAGE_Tesseract=$(usex !tesseract)
+			)
+		else
+			GLOBALCMAKEARGS+=(
+				-DCMAKE_DISABLE_FIND_PACKAGE_Tesseract=ON
+			)
+		fi
+	fi
+
+	# workaround for bug 413429
+	tc-export CC CXX
+
+	local mycmakeargs=(
+		${GLOBALCMAKEARGS[@]}
+		-DPYTHON_EXECUTABLE=OFF
+		-DINSTALL_PYTHON_EXAMPLES=OFF
+		-DBUILD_opencv_python2=OFF
+		-DBUILD_opencv_python3=OFF
+	)
+
+	cmake_src_configure
+
+	# Copy face_land_model to ${CMAKE_BINARY_DIR}/${OPENCV_TEST_DATA_INSTALL_PATH}
+	# TODO patch ocv_download to copy files into destination dirs
+	if use contribdnn; then
+		mkdir -p "${BUILD_DIR}"/share/OpenCV/testdata/cv/face/ || die
+		cp "${WORKDIR}"/face_landmark_model.dat "${BUILD_DIR}"/share/OpenCV/testdata/cv/face/ || die
+	fi
+
+}
+
+python_module_compile() {
+	local BUILD_DIR="${orig_BUILD_DIR}"
+	local mycmakeargs=( ${GLOBALCMAKEARGS[@]} )
+
+	# Set all python variables to load the correct Gentoo paths
+	mycmakeargs+=(
+		# python_setup alters PATH and sets this as wrapper
+		# to the correct interpreter we are building for
+		-DPYTHON_DEFAULT_EXECUTABLE=${EPYTHON}
+		-DINSTALL_PYTHON_EXAMPLES=$(usex examples)
+	)
+
+	# Regenerate cache file. Can't use rebuild_cache as it won't
+	# have the Gentoo specific options.
+	rm CMakeCache.txt || die "rm failed"
+	cmake_src_configure
+	cmake_src_compile
+	cmake_src_install
+
+	# Remove compiled binary so new version compiles
+	# Avoid conflicts with new module builds as build system doesn't
+	# really support it.
+	rm -r modules/python3 || die "rm failed"
+
+	python_optimize "${ED}"/$(python_get_sitedir)
+}
+
+multilib_src_install() {
+	cmake_src_install
+
+	# Build and install the python modules for all targets
+	if multilib_is_native_abi && use python; then
+		local orig_BUILD_DIR="${BUILD_DIR}"
+		python_foreach_impl python_module_compile
+	fi
+}