sci-libs/suitesparseconfig: 7.12.2-r2 add USE=cuda

Signed-off-by: Paul Zander <negril.nx+gentoo@gmail.com>
Part-of: https://codeberg.org/gentoo/gentoo/pulls/985
Signed-off-by: Nowa Ammerlaan <nowa@gentoo.org>

sci-libs/suitesparseconfig/suitesparseconfig-7.12.2-r2.ebuild

@@ -3,7 +3,7 @@
 
 EAPI=8
 
-inherit cmake toolchain-funcs
+inherit cmake cuda toolchain-funcs
 
 Sparse_PV=$(ver_rs 3 '.')
 Sparse_P="SuiteSparse-${Sparse_PV}"
@@ -15,7 +15,7 @@ S="${WORKDIR}/${Sparse_P}/SuiteSparse_config"
 LICENSE="BSD"
 SLOT="0/$(ver_cut 1)"
 KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~loong ~mips ~ppc ~ppc64 ~riscv ~s390 ~sparc ~x86"
-IUSE="openmp"
+IUSE="cuda openmp"
 
 # we need to depend on blas as the cmake file looks for it.
 # It is also a runtime dependency as it has headers to link with blas
@@ -32,6 +32,14 @@ pkg_setup() {
 	[[ ${MERGE_TYPE} != binary ]] && use openmp && tc-check-openmp
 }
 
+src_prepare() {
+	cmake_src_prepare
+
+	if use cuda; then
+		cuda_src_prepare
+	fi
+}
+
 src_configure() {
 	# Make sure we always include the Fortran interface.
 	# It doesn't require a Fortran compiler to be present
@@ -58,5 +66,16 @@ src_configure() {
 	fi
 	# TODO: Figure out how to make sci-libs/mkl work. Bug 974246
 
+	if use cuda; then
+		cuda_add_sandbox
+		addpredict "/dev/char/"
+
+		mycmakeargs+=(
+			-DSUITESPARSE_CUDA_ARCHITECTURES="${CUDAARCHS:-all-major}"
+		)
+		local -x CUDAHOSTCXX="$(cuda_gccdir)"
+		local -x CUDAHOSTLD="$(tc-getCXX)"
+	fi
+
 	cmake_src_configure
 }