commit: d8b23402c5128638963111e9952d338af0d10305
Author: Michał Górny <mgorny <AT> gentoo <DOT> org>
AuthorDate: Thu Sep 11 18:50:02 2025 +0000
Commit: Michał Górny <mgorny <AT> gentoo <DOT> org>
CommitDate: Sun Sep 28 18:19:48 2025 +0000
URL: https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=d8b23402
sci-libs/lapack: Introduce USE=flexiblas for sys flexiblas use
Introduce a USE=flexiblas that adds a "-reference" suffix to all
the libraries, and moves the headers into a "lapack-reference"
subdirectory. This is meant to make it possible to symlink the system
BLAS/LAPACK libraries into sci-libs/flexiblas instead.
Signed-off-by: Michał Górny <mgorny <AT> gentoo.org>
sci-libs/lapack/lapack-3.12.1-r2.ebuild | 153 ++++++++++++++++++++++++++++++++
sci-libs/lapack/metadata.xml | 3 +
2 files changed, 156 insertions(+)
diff --git a/sci-libs/lapack/lapack-3.12.1-r2.ebuild
b/sci-libs/lapack/lapack-3.12.1-r2.ebuild
new file mode 100644
index 000000000000..d05a7a91a70f
--- /dev/null
+++ b/sci-libs/lapack/lapack-3.12.1-r2.ebuild
@@ -0,0 +1,153 @@
+# Copyright 1999-2025 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+# Some additional tests are run if Python is found
+PYTHON_COMPAT=( python3_{11..14} )
+inherit cmake flag-o-matic fortran-2 python-any-r1
+
+DESCRIPTION="BLAS, CBLAS, LAPACK, LAPACKE reference implementations"
+HOMEPAGE="https://www.netlib.org/lapack/";
+SRC_URI="https://github.com/Reference-LAPACK/lapack/archive/v${PV}.tar.gz ->
${P}.tar.gz"
+
+LICENSE="BSD"
+SLOT="0"
+KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~loong ~mips ~ppc ~ppc64 ~riscv
~s390 ~sparc ~x86 ~amd64-linux ~x86-linux ~arm64-macos ~ppc-macos ~x64-macos"
+IUSE="flexiblas lapacke deprecated doc eselect-ldso index64 test"
+REQUIRED_USE="flexiblas? ( deprecated !eselect-ldso )"
+RESTRICT="!test? ( test )"
+
+RDEPEND="
+ !app-eselect/eselect-cblas
+ virtual/fortran
+ eselect-ldso? (
+ >=app-eselect/eselect-blas-0.2
+ >=app-eselect/eselect-lapack-0.2
+ )
+ doc? ( app-doc/blas-docs )
+"
+DEPEND="${RDEPEND}"
+BDEPEND="
+ virtual/pkgconfig
+ test? ( ${PYTHON_DEPS} )
+"
+PDEPEND="
+ flexiblas? (
+ sci-libs/flexiblas[system-blas(-)]
+ )
+"
+
+PATCHES=(
+ "${FILESDIR}"/${PN}-3.12.1-broken-flow.patch
+ "${FILESDIR}"/${PN}-3.12.1-broken-flow-deux.patch
+ "${FILESDIR}"/${PN}-3.12.1-broken-flow-trois.patch
+ "${FILESDIR}"/${PN}-3.12.1-lapack64-pc.patch
+)
+
+pkg_setup() {
+ fortran-2_pkg_setup
+ use test && python-any-r1_pkg_setup
+}
+
+src_prepare() {
+ cmake_src_prepare
+
+ if use flexiblas; then
+ # install libraries renamed to '*-reference'
+ sed -i -e '/set([A-Z]*LIB/s:"):-reference"):' CMakeLists.txt ||
die
+ fi
+}
+
+src_configure() {
+ # bug #878891
+ filter-lto
+
+ local mycmakeargs=(
+ -DCBLAS=ON
+ -DLAPACKE=$(usex lapacke)
+ -DBUILD_DEPRECATED=$(usex deprecated)
+ -DBUILD_SHARED_LIBS=ON
+ -DBUILD_TESTING=$(usex test)
+ -DLAPACK_TESTING_USE_PYTHON=$(usex test)
+ # Breaks cross
+ -DTEST_FORTRAN_COMPILER=OFF
+ )
+ if use flexiblas; then
+ mycmakeargs+=(
+ -DCMAKE_INSTALL_INCLUDEDIR=include/lapack-reference
+ # Disable the additional ILP64 symbols in LP64 libraries
+ # for now, to save time. FlexiBLAS cannot use them
+ # at the moment.
+ -DBUILD_INDEX64_EXT_API=OFF
+ )
+ fi
+
+ cmake_src_configure
+
+ if use index64; then
+ mycmakeargs+=(
+ -DBUILD_INDEX64=ON
+ )
+ BUILD_DIR=${BUILD_DIR}-ilp64 cmake_src_configure
+ fi
+}
+
+src_compile() {
+ cmake_src_compile
+ use index64 && BUILD_DIR=${BUILD_DIR}-ilp64 cmake_src_compile
+}
+
+src_install() {
+ cmake_src_install
+ use index64 && BUILD_DIR=${BUILD_DIR}-ilp64 cmake_src_install
+
+ use eselect-ldso || return
+ # Create private lib directory for eselect::blas (ld.so.conf)
+ dodir /usr/$(get_libdir)/blas/reference
+ dosym -r /usr/$(get_libdir)/libblas.so
/usr/$(get_libdir)/blas/reference/libblas.so
+ dosym -r /usr/$(get_libdir)/libblas.so.3
/usr/$(get_libdir)/blas/reference/libblas.so.3
+ dosym -r /usr/$(get_libdir)/libcblas.so
/usr/$(get_libdir)/blas/reference/libcblas.so
+ dosym -r /usr/$(get_libdir)/libcblas.so.3
/usr/$(get_libdir)/blas/reference/libcblas.so.3
+
+ # Create private lib directory for eselect::lapack (ld.so.conf)
+ dodir /usr/$(get_libdir)/lapack/reference
+ dosym -r /usr/$(get_libdir)/liblapack.so
/usr/$(get_libdir)/lapack/reference/liblapack.so
+ dosym -r /usr/$(get_libdir)/liblapack.so.3
/usr/$(get_libdir)/lapack/reference/liblapack.so.3
+}
+
+pkg_postinst() {
+ use eselect-ldso || return
+
+ local me=reference libdir=$(get_libdir)
+ # check eselect-blas
+ eselect blas add ${libdir} "${EPREFIX}"/usr/${libdir}/blas/${me} ${me}
+ local current_blas=$(eselect blas show ${libdir} | cut -d' ' -f2)
+ if [[ ${current_blas} == ${me} || -z ${current_blas} ]]; then
+ eselect blas set ${libdir} ${me}
+ elog "Current eselect: BLAS ($libdir) -> [${current_blas}]."
+ else
+ elog "Current eselect: BLAS ($libdir) -> [${current_blas}]."
+ elog "To use blas [${me}] implementation, you have to issue (as
root):"
+ elog "\t eselect blas set ${libdir} ${me}"
+ fi
+
+ # check eselect-lapack
+ eselect lapack add ${libdir} "${EPREFIX}"/usr/${libdir}/lapack/${me}
${me}
+ local current_lapack=$(eselect lapack show ${libdir} | cut -d' ' -f2)
+ if [[ ${current_lapack} == ${me} || -z ${current_lapack} ]]; then
+ eselect lapack set ${libdir} ${me}
+ elog "Current eselect: LAPACK ($libdir) -> [${current_lapack}]."
+ else
+ elog "Current eselect: LAPACK ($libdir) -> [${current_lapack}]."
+ elog "To use lapack [${me}] implementation, you have to issue
(as root):"
+ elog "\t eselect lapack set ${libdir} ${me}"
+ fi
+}
+
+pkg_postrm() {
+ use eselect-ldso || return
+
+ eselect blas validate
+ eselect lapack validate
+}
diff --git a/sci-libs/lapack/metadata.xml b/sci-libs/lapack/metadata.xml
index 539164e91398..99e27523a2df 100644
--- a/sci-libs/lapack/metadata.xml
+++ b/sci-libs/lapack/metadata.xml
@@ -28,6 +28,9 @@ This package installs the reference FORTRAN 77 implementation
from Netlib.
</longdescription>
<use>
<flag name="deprecated">Also build deprecated functions</flag>
+ <flag name="flexiblas">
+ Rename install files, for system FlexiBLAS compatibility
+ </flag>
<flag name="index64">Build a separate ILP64 library in addition
to LP64</flag>
<flag name="lapacke">Build LAPACKE</flag>
<flag name="eselect-ldso">Enable runtime library switching by
