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# Copyright 1999-2017 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
EAPI=6
FORTRAN_NEEDED=fortran
inherit alternatives-2 cmake-utils fortran-2 multilib numeric vcs-snapshot
DESCRIPTION="C++ template library for linear algebra"
HOMEPAGE="http://eigen.tuxfamily.org/"
SRC_URI="
https://bitbucket.org/eigen/eigen/get/${PV}.tar.bz2 -> ${P}.tar.bz2
https://bitbucket.org/eigen/eigen/commits/1d71b1341c03a7c485289be2c8bd906a259c0487/raw/ -> ${P}-cmake.patch
"
SLOT="3"
LICENSE="MPL-2.0"
KEYWORDS="~amd64 ~x86 ~amd64-linux ~x86-linux"
IUSE="adolc doc fortran fftw gmp metis mkl pastix sparse static-libs test"
CDEPEND="
adolc? ( sci-libs/adolc[sparse?] )
fftw? ( sci-libs/fftw:3.0 )
gmp? ( dev-libs/gmp:0 dev-libs/mpfr:0 )
metis? ( sci-libs/metis )
mkl? ( sci-libs/mkl )
pastix? ( sci-libs/pastix )
sparse? (
dev-cpp/sparsehash
sci-libs/cholmod[metis?]
sci-libs/spqr
sci-libs/superlu
sci-libs/umfpack
)"
DEPEND="
doc? ( app-doc/doxygen[dot,latex] )
test? ( ${CDEPEND} )"
RDEPEND="
!dev-cpp/eigen:0
${CDEPEND}"
PATCHES=( "${DISTDIR}"/${P}-cmake.patch )
src_prepare() {
sed -i \
-e "s:/usr:${EPREFIX}/usr:g" \
-e "s:/bin/bash:${EPREFIX}/bin/bash:g" \
cmake/*.cmake || die
sed -i \
-e "/DESTINATION/s:lib:$(get_libdir):g" \
{blas,lapack}/CMakeLists.txt || die
# TOFIX: static-libs for blas are always built with PIC
if ! use static-libs; then
sed \
-e "/add_dependencies/s/eigen_[a-z]*_static//g" \
-e "/TARGETS/s/eigen_[a-z]*_static//g" \
-e "/add_library(eigen_[a-z]*_static/d" \
-e "/target_link_libraries(eigen_[a-z]*_static/d" \
-i {blas,lapack}/CMakeLists.txt || die
fi
sed -i -e "/Unknown build type/d" CMakeLists.txt || die
sed \
-e '/Cflags/s|:.*|: -I${CMAKE_INSTALL_PREFIX}/${INCLUDE_INSTALL_DIR}|g' \
-i eigen3.pc.in || die
cmake-utils_src_prepare
}
src_configure() {
# TOFIX: is it worth fixing all the automagic given no library is built?
# cmake has buggy disable_testing feature, so leave it for now
local mycmakeargs=(
-DDART_TESTING_TIMEOUT=300
-DEIGEN_BUILD_BTL=OFF
)
export VARTEXFONTS="${T}/fonts"
export PKG_CONFIG_LIBDIR=/usr/$(get_libdir)/
cmake-utils_src_configure
# use fortran && FORTRAN_LIBS="blas lapack" not ready
use fortran && FORTRAN_LIBS="blas"
}
src_compile() {
local targets="${FORTRAN_LIBS}"
use doc && targets+=" doc"
use test && targets+=" check"
cmake-utils_src_compile ${targets}
}
src_install() {
cmake-utils_src_install
use doc && dohtml -r "${BUILD_DIR}"/doc/html/*
local x
for x in ${FORTRAN_LIBS}; do
local libname="eigen_${x}"
emake DESTDIR="${D}" -C "${BUILD_DIR}/${x}" install ${libname}
create_pkgconfig \
--description "${DESCRIPTION} ${x^^} implementation" \
--libs "-L\${libdir} -l${libname}" \
--libs-private "-lm" \
$([[ ${x} == lapack ]] && echo "--requires 'blas'") \
${libname}
alternatives_for ${x} eigen 0 \
/usr/$(get_libdir)/pkgconfig/${x}.pc ${libname}.pc
done
# Debian installs it and some projects started using it.
insinto /usr/share/cmake/Modules/
doins "${S}/cmake/FindEigen3.cmake"
}
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