sci-misc/stable-diffusion-cpp: new package, add 9999

Signed-off-by: Craig Andrews <candrews@gentoo.org>

sci-misc/stable-diffusion-cpp/metadata.xml

@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE pkgmetadata SYSTEM "https://www.gentoo.org/dtd/metadata.dtd">
+<pkgmetadata>
+	<upstream>
+		<remote-id type="github">leejet/stable-diffusion.cpp</remote-id>
+	</upstream>
+	<use>
+		<flag name="blis">Build a BLIS backend</flag>
+		<flag name="flexiblas">Build a FlexiBLAS backend</flag>
+		<flag name="rocm">Build a HIP (ROCm) backend</flag>
+		<flag name="wmma">Use rocWMMA to enhance flash attention performance</flag>
+		<flag name="openblas">Build an OpenBLAS backend</flag>
+	</use>
+	<maintainer type="person">
+		<email>candrews@gentoo.org</email>
+		<name>Craig Andrews</name>
+	</maintainer>
+</pkgmetadata>

sci-misc/stable-diffusion-cpp/stable-diffusion-cpp-9999.ebuild

@@ -0,0 +1,140 @@
+# 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
+}