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# Copyright 2026 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2
EAPI=8
ROCM_VERSION="6.3"
inherit cmake cuda rocm linux-info
DESCRIPTION="Diffusion model(SD,Flux,Wan,Qwen Image,Z-Image,...) inference in pure C/C++"
HOMEPAGE="https://github.com/leejet/stable-diffusion.cpp"
if [[ ${PV} == *9999* ]]; then
inherit git-r3
EGIT_REPO_URI="https://github.com/leejet/stable-diffusion.cpp.git"
else
MY_PV="b${PV#0_pre}"
SRC_URI="https://github.com/leejet/stable-diffusion.cpp/archive/refs/tags/${MY_PV}.tar.gz -> ${P}.tar.gz"
S="${WORKDIR}/stable-diffusion-cpp-${MY_PV}"
KEYWORDS="~amd64"
fi
LICENSE="MIT"
SLOT="0"
CPU_FLAGS_X86=( avx avx2 f16c )
IUSE="openblas blis rocm cuda opencl vulkan flexiblas wmma"
REQUIRED_USE="
?? (
openblas
blis
flexiblas
)
wmma? (
rocm
)
"
CDEPEND="
openblas? ( sci-libs/openblas:= )
blis? ( sci-libs/blis:= )
flexiblas? ( sci-libs/flexiblas:= )
rocm? (
>=dev-util/hip-${ROCM_VERSION}:=
>=sci-libs/hipBLAS-${ROCM_VERSION}:=
wmma? (
>=sci-libs/rocWMMA-${ROCM_VERSION}:=
)
)
cuda? ( dev-util/nvidia-cuda-toolkit:= )
"
DEPEND="${CDEPEND}
opencl? ( dev-util/opencl-headers )
vulkan? ( dev-util/vulkan-headers )
"
RDEPEND="${CDEPEND}
dev-python/numpy
opencl? ( dev-libs/opencl-icd-loader )
vulkan? ( media-libs/vulkan-loader )
"
BDEPEND="media-libs/shaderc"
pkg_setup() {
if use rocm; then
linux-info_pkg_setup
if linux-info_get_any_version && linux_config_exists; then
if ! linux_chkconfig_present HSA_AMD_SVM; then
ewarn "To use ROCm/HIP, you need to have HSA_AMD_SVM option enabled in your kernel."
fi
fi
fi
}
src_prepare() {
use cuda && cuda_src_prepare
cmake_src_prepare
}
src_configure() {
local mycmakeargs=(
-DCMAKE_SKIP_BUILD_RPATH=ON
-DSD_BUILD_SHARED_LIBS=OFF
-DSD_SERVER_BUILD_FRONTEND=OFF # requires pnpm and network access
-DGGML_NATIVE=0 # don't set march
-DGGML_RPC=ON
-DGENTOO_REMOVE_CMAKE_BLAS_HACK=ON
-DSD_CUDA=$(usex cuda)
-DSD_OPENCL=$(usex opencl)
-DSD_VULKAN=$(usex vulkan)
# avoid clashing with whisper.cpp
-DCMAKE_INSTALL_LIBDIR="${EPREFIX}/usr/$(get_libdir)/stable-diffusion.cpp"
-DCMAKE_INSTALL_RPATH="${EPREFIX}/usr/$(get_libdir)/stable-diffusion.cpp"
)
if use openblas ; then
mycmakeargs+=(
-DGGML_BLAS=ON -DGGML_BLAS_VENDOR=OpenBLAS
)
fi
if use blis ; then
mycmakeargs+=(
-DGGML_BLAS=ON -DGGML_BLAS_VENDOR=FLAME
)
fi
if use flexiblas; then
mycmakeargs+=(
-DGGML_BLAS=ON -DGGML_BLAS_VENDOR=FlexiBLAS
)
fi
if use cuda; then
local -x CUDAHOSTCXX="$(cuda_gccdir)"
# tries to recreate dev symlinks
cuda_add_sandbox
addpredict "/dev/char/"
fi
if use rocm; then
rocm_use_hLipcc
mycmakeargs+=(
-DSD_HIPBLAS=ON -DAMDGPU_TARGETS=$(get_amdgpu_flags) -DGPU_TARGETS=$(get_amdgpu_flags)
-DGGML_HIP_ROCWMMA_FATTN=$(usex wmma)
)
fi
cmake_src_configure
}
src_install() {
cmake_src_install
# avoid clashing with whisper.cpp
rm -rf "${ED}/usr/include"
find "${ED}" -name "*.a" -delete || die
}
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