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# Copyright 2026 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2
EAPI=8
ROCM_VERSION="6.1"
inherit cmake cuda rocm linux-info toolchain-funcs
MY_PN="${PN/-/.}"
MY_P="${MY_PN}-${PV}"
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}/${MY_P}"
KEYWORDS="~amd64"
fi
LICENSE="MIT"
SLOT="0"
# GGML CPU flags
X86_CPU_FLAGS=(
amx_bf16
amx_int8
amx_tile
avx
avx2
avx512_bf16
avx512_vnni
avx512f
avx512vbmi
avx_vnni
bmi2
f16c
fma3
sse4_2
)
CPU_FLAGS=( "${X86_CPU_FLAGS[@]/#/cpu_flags_x86_}" )
GGML_IUSE="${CPU_FLAGS[*]} blis cuda flexiblas openblas opencl +openmp rocm vulkan"
unset X86_CPU_FLAGS CPU_FLAGS
IUSE="${GGML_IUSE} webm webp"
unset GGML_IUSE
REQUIRED_USE="
?? (
openblas
blis
flexiblas
)
rocm? ( ${ROCM_REQUIRED_USE} )
webm? (
webp
)
"
COMMON_DEPEND="
openblas? ( sci-libs/openblas:= )
openmp? ( llvm-runtimes/openmp:= )
blis? ( sci-libs/blis:= )
flexiblas? ( sci-libs/flexiblas:= )
rocm? (
>=dev-util/hip-${ROCM_VERSION}:=
>=sci-libs/hipBLAS-${ROCM_VERSION}:=
)
cuda? ( dev-util/nvidia-cuda-toolkit:= )
webp? ( media-libs/libwebp )
webm? ( media-libs/libwebm )
"
DEPEND="${COMMON_DEPEND}
opencl? ( dev-util/opencl-headers )
vulkan? (
dev-util/spirv-headers
dev-util/vulkan-headers
)
"
RDEPEND="${COMMON_DEPEND}
opencl? ( dev-libs/opencl-icd-loader )
vulkan? ( media-libs/vulkan-loader )
"
BDEPEND="vulkan? ( media-libs/shaderc )"
pkg_pretend() {
[[ ${MERGE_TYPE} != binary ]] && use openmp && tc-check-openmp
}
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
[[ ${MERGE_TYPE} != binary ]] && use openmp && tc-check-openmp
}
src_prepare() {
use cuda && cuda_src_prepare
cmake_src_prepare
}
src_configure() {
local mycmakeargs=(
-DSD_BUILD_EXAMPLES=ON
-DSD_WEBP=$(usex webp)
-DSD_USE_SYSTEM_WEBP=$(usex webp)
-DSD_WEBM=$(usex webm)
-DSD_USE_SYSTEM_WEBM=$(usex webm)
# GGML features controls
-DSD_CUDA=$(usex cuda)
-DSD_VULKAN=$(usex vulkan)
-DSD_OPENCL=$(usex opencl)
-DSD_RPC=ON
-DSD_BUILD_SHARED_LIBS=OFF
-DSD_SERVER_BUILD_FRONTEND=OFF # requires pnpm and network access
# avoid clashing with sci-ml/ggml
-DCMAKE_INSTALL_INCLUDEDIR="include/${MY_PN}"
-DCMAKE_INSTALL_LIBDIR="$(get_libdir)/${MY_PN}"
-DCMAKE_INSTALL_RPATH="\$ORIGIN/../$(get_libdir)/${MY_PN};\$ORIGIN"
)
# GGML backends
mycmakeargs+=(
-DGGML_NATIVE=OFF # don't set march
# CPU Flags
-DGGML_SSE42=$(usex cpu_flags_x86_sse4_2)
-DGGML_AVX=$(usex cpu_flags_x86_avx)
-DGGML_AVX_VNNI=$(usex cpu_flags_x86_avx_vnni)
-DGGML_AVX2=$(usex cpu_flags_x86_avx2)
-DGGML_BMI2=$(usex cpu_flags_x86_bmi2)
-DGGML_AVX512=$(usex cpu_flags_x86_avx512f)
-DGGML_AVX512_VBMI=$(usex cpu_flags_x86_avx512vbmi)
-DGGML_AVX512_VNNI=$(usex cpu_flags_x86_avx512_vnni)
-DGGML_AVX512_BF16=$(usex cpu_flags_x86_avx512_bf16)
-DGGML_FMA=$(usex cpu_flags_x86_fma3)
-DGGML_F16C=$(usex cpu_flags_x86_f16c)
-DGGML_AMX_TILE=$(usex cpu_flags_x86_amx_tile)
-DGGML_AMX_INT8=$(usex cpu_flags_x86_amx_int8)
-DGGML_AMX_BF16=$(usex cpu_flags_x86_amx_bf16)
-DGGML_OPENMP=$(usex openmp)
)
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="$(cuda_gccdir)"
# tries to recreate dev symlinks
cuda_add_sandbox
addpredict "/dev/char/"
fi
if use rocm; then
export HIPCXX="$(hipconfig -l)/clang" HIP_PATH="$(hipconfig -p)"
mycmakeargs+=(
-DSD_HIPBLAS=ON
-DGPU_TARGETS=$(get_amdgpu_flags)
)
fi
cmake_src_configure
}
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