spec: Enable Vulkan support

Signed-off-by: Vitaly Chikunov <vt@altlinux.org>

.gear/llama.cpp.spec

@@ -8,6 +8,7 @@
 %else
 %def_without cuda
 %endif
+%def_with vulkan
 
 Name: llama.cpp
 Version: 4855
@@ -24,6 +25,9 @@ Requires: %name-cuda = %EVR
 %filter_from_requires /(libcudart\.so\.12)/d
 %filter_from_requires /debug64(libcuda\.so\.1)/d
 %endif
+%if_with vulkan
+Requires: %name-vulkan = %EVR
+%endif
 
 Source: %name-%version.tar
 Patch: %name-%version.patch
@@ -39,6 +43,10 @@ BuildRequires: libstdc++-devel-static
 BuildRequires: gcc12-c++
 BuildRequires: nvidia-cuda-devel-static
 %endif
+%if_with vulkan
+BuildRequires: glslc
+BuildRequires: libvulkan-devel
+%endif
 %{?!_without_check:%{?!_disable_check:
 BuildRequires: ctest
 BuildRequires: tinyllamas-gguf
@@ -120,6 +128,14 @@ Requires: %name-cpu = %EVR
 %description cuda
 %summary.
 
+%package vulkan
+Summary: %name backend for GPU
+Group: Sciences/Computer science
+Requires: %name-cpu = %EVR
+
+%description vulkan
+%summary.
+
 %prep
 %setup
 %autopatch -p1
@@ -153,6 +169,9 @@ export NVCC_PREPEND_FLAGS=-ccbin=g++-12
 %if_with cuda
 	-DGGML_CUDA=ON \
 	-DCMAKE_CUDA_ARCHITECTURES='52-virtual;80-virtual' \
+%endif
+%if_with vulkan
+	-DGGML_VULKAN=ON \
 %endif
 	%nil
 grep -E 'LLAMA|GGML' %_cmake__builddir/CMakeCache.txt | sort | tee build-options.txt
@@ -224,6 +243,13 @@ llama-cli -m %_datadir/tinyllamas/stories260K.gguf -p "Once upon a time" -s 55 -
 %_libexecdir/llama/libggml-cuda.so
 %endif
 
+%if_with vulkan
+%files vulkan
+%_bindir/vulkan-shaders-gen
+%dir %_libexecdir/llama
+%_libexecdir/llama/libggml-vulkan.so
+%endif
+
 %changelog
 * Mon Mar 10 2025 Vitaly Chikunov <vt@altlinux.org> 1:4855-alt1
 - Update to b4855 (2025-03-07).