# Copyright 1999-2025 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2

EAPI=8

ROCM_VERSION=${PV}

inherit cmake rocm

DESCRIPTION="Generate pseudo-random and quasi-random numbers"
HOMEPAGE="https://github.com/ROCm/rocm-libraries/tree/develop/projects/rocrand"
SRC_URI="https://github.com/ROCm/${PN}/archive/rocm-${PV}.tar.gz -> ${P}.tar.gz"
S="${WORKDIR}/rocRAND-rocm-${PV}"

LICENSE="MIT"
SLOT="0/$(ver_cut 1-2)"
KEYWORDS="~amd64"
IUSE="benchmark test"
REQUIRED_USE="${ROCM_REQUIRED_USE}"

RESTRICT="!test? ( test )"

RDEPEND="
	dev-util/hip:${SLOT}
	benchmark? ( dev-cpp/benchmark )
"
DEPEND="${RDEPEND}
	dev-build/rocm-cmake
	test? ( dev-cpp/gtest )"
BDEPEND="dev-build/rocm-cmake
	>=dev-build/cmake-3.22"

src_configure() {
	rocm_use_clang

	export ROCM_PATH="${EPREFIX}/usr"

	local mycmakeargs=(
		-DCMAKE_SKIP_RPATH=ON
		-DAMDGPU_TARGETS="$(get_amdgpu_flags)"
		-DBUILD_FILE_REORG_BACKWARD_COMPATIBILITY=OFF
		-DROCM_SYMLINK_LIBS=OFF
		-DBUILD_TEST=$(usex test ON OFF)
		-DBUILD_BENCHMARK=$(usex benchmark ON OFF)
	)

	cmake_src_configure
}

src_test() {
	check_amdgpu
	export LD_LIBRARY_PATH="${BUILD_DIR}/library"
	# uses HMM to fit tests to default <512M iGPU VRAM
	ROCRAND_USE_HMM="1" cmake_src_test -j1
}

src_install() {
	cmake_src_install

	if use benchmark; then
		cd "${BUILD_DIR}"/benchmark || die
		dobin benchmark_rocrand_*
	fi
}