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# Copyright 1999-2025 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2
EAPI=8
inherit cmake flag-o-matic toolchain-funcs
DESCRIPTION="Streamlined C++ linear algebra library"
HOMEPAGE="https://arma.sourceforge.net"
SRC_URI="https://downloads.sourceforge.net/arma/${P}.tar.xz"
LICENSE="Apache-2.0"
SLOT="0/14"
KEYWORDS="amd64 ~arm ppc64 ~riscv ~x86"
IUSE="arpack blas doc examples lapack mkl superlu test"
RESTRICT="!test? ( test )"
REQUIRED_USE="test? ( arpack lapack superlu )"
# atlas? ( sci-libs/atlas[lapack] )
RDEPEND="
dev-libs/boost
arpack? ( sci-libs/arpack )
blas? ( virtual/blas )
lapack? ( virtual/lapack )
mkl? ( sci-libs/mkl )
superlu? ( >=sci-libs/superlu-5.2:= )
"
DEPEND="${RDEPEND}
arpack? ( virtual/pkgconfig )
blas? ( virtual/pkgconfig )
lapack? ( virtual/pkgconfig )
"
src_prepare() {
# avoid the automagic cmake macros...
sed -i -e 's/^ *include(ARMA_Find/# No automagic include(ARMA_Find/g' CMakeLists.txt || die
# ... except for mkl, since without a license it's hard to figure out what to do there
if use mkl; then
sed -i -e 's/^# No automagic include(ARMA_FindMKL)/include(ARMA_FindMKL)/g' CMakeLists.txt || die
fi
cmake_src_prepare
}
src_configure() {
# odr violations
filter-lto
# Similar case to https://github.com/AcademySoftwareFoundation/OpenColorIO/issues/1361
# spmat.cpp:1137: FAILED:
# REQUIRE( c(1, 0) == d(1, 0) )
#with expansion:
# 0 == -0.0
append-flags -ffp-contract=on
local mycmakeargs=(
-DINSTALL_LIB_DIR="${EPREFIX}/usr/$(get_libdir)"
)
if use arpack; then
mycmakeargs+=(
-DARPACK_FOUND=ON
-DARPACK_LIBRARY="$($(tc-getPKG_CONFIG) --libs arpack)"
)
# bug #902451
# config.hpp is supposed to define -DARMA_USE_*. but this header isnt included consistently...
append-cppflags -DARMA_USE_ARPACK
else
mycmakeargs+=(
-DARPACK_FOUND=OFF
)
fi
# if use atlas; then
# local c=atlas-cblas l=atlas-clapack
# $(tc-getPKG_CONFIG) --exists ${c}-threads && c+=-threads
# $(tc-getPKG_CONFIG) --exists ${l}-threads && l+=-threads
# mycmakeargs+=(
# -DCBLAS_FOUND=ON
# -DCBLAS_INCLUDE_DIR="$($(tc-getPKG_CONFIG) --cflags-only-I ${c} | sed 's/-I//')"
# -DCBLAS_LIBRARIES="$($(tc-getPKG_CONFIG) --libs ${c})"
# -DCLAPACK_FOUND=ON
# -DCLAPACK_INCLUDE_DIR="$($(tc-getPKG_CONFIG) --cflags-only-I ${l} | sed 's/-I//')"
# -DCLAPACK_LIBRARIES="$($(tc-getPKG_CONFIG) --libs ${l})"
# )
# fi
if use blas; then
mycmakeargs+=(
-DBLAS_FOUND=ON
-DBLAS_LIBRARIES="$($(tc-getPKG_CONFIG) --libs blas)"
)
# bug #902451
append-cppflags -DARMA_USE_BLAS
else
mycmakeargs+=(
-DBLAS_FOUND=OFF
)
fi
if use lapack; then
mycmakeargs+=(
-DLAPACK_FOUND=ON
-DLAPACK_LIBRARIES="$($(tc-getPKG_CONFIG) --libs lapack)"
)
# bug #902451
append-cppflags -DARMA_USE_LAPACK
else
mycmakeargs+=(
-DLAPACK_FOUND=OFF
)
fi
if use superlu; then
mycmakeargs+=(
-DSuperLU_FOUND=ON
-DSuperLU_LIBRARY="$($(tc-getPKG_CONFIG) --libs superlu)"
-DSuperLU_INCLUDE_DIR="$($(tc-getPKG_CONFIG) --cflags-only-I superlu | awk '{print $1}' | sed 's/-I//')"
)
# bug #902451
append-cppflags -DARMA_USE_SUPERLU
else
mycmakeargs+=(
-DSuperLU_FOUND=OFF
)
fi
cmake_src_configure
}
src_test() {
cmake_src_test || die
pushd tests2 > /dev/null
emake \
CXX="$(tc-getCXX)" \
CXX_FLAGS="-I../include ${CXXFLAGS} ${CPPFLAGS}" \
LIB_FLAGS="-L${BUILD_DIR} -larmadillo $($(tc-getPKG_CONFIG) --libs blas lapack) $($(tc-getPKG_CONFIG) --libs superlu) $($(tc-getPKG_CONFIG) --libs arpack)"
LD_LIBRARY_PATH="${BUILD_DIR}:${LD_LIBRARY_PATH}" ./main || die
emake clean
popd > /dev/null
}
src_install() {
cmake_src_install
dodoc README.md
use doc && dodoc *pdf *html
if use examples; then
docinto examples
dodoc -r examples/*
docompress -x /usr/share/doc/${PF}/examples
fi
}
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