pkg download command and patches

assets/var/gnu/llama.cpp.md

@@ -0,0 +1,29 @@
+llama.cpp
+=
+https://github.com/ggml-org/llama.cpp/archive/refs/tags/b10094.tar.gz
+
+``` env *** env ***
+HIP_DEVICE_LIB_PATH=/pkg/gnu/rocm/llvm/amd/device-libs/amdgcn/bitcode
+ROCM_PATH=/pkg/gnu
+HIP_PATH=/pkg/gnu
+GPU_TARGETS=gfx1150
+```
+
+``` sh *** patch ***
+sed -i '/^ggml_add_backend_library(ggml-hip$/,/^[[:space:]]*)$/{ /^[[:space:]]*)$/a\
+target_compile_options(ggml-hip PRIVATE $<$<COMPILE_LANGUAGE:HIP>:-include __clang_hip_runtime_wrapper.h>)
+}' ggml/src/ggml-hip/CMakeLists.txt
+```
+
+``` sh *** build ***
+mkdir -p build; cd build
+cmake .. \
+    -DCMAKE_INSTALL_PREFIX="$pkgpath" \
+    -DGGML_HIP=ON \
+    -DCMAKE_C_COMPILER=amdclang \
+    -DCMAKE_CXX_COMPILER=amdclang++ \
+    -DCMAKE_CXX_FLAGS="-D_GNU_SOURCE -O3 -march=native" \
+    -DGPU_TARGETS="gfx1150"
+cmake --build . -j$(nproc)
+cmake --install .
+```