build-clang.sh

#!/usr/bin/env bash
WORK_DIR=$GITHUB_WORKSPACE
VERSION=1
LLVM_VERSION=17

cd $WORK_DIR
wget https://snapshots.linaro.org/gnu-toolchain/12.3-2023.06-1/arm-linux-gnueabihf/gcc-linaro-12.3.1-2023.06-x86_64_arm-linux-gnueabihf.tar.xz
tar -xf *.xz
rm *.xz

CC=$WORK_DIR/gcc-linaro-12.3.1-2023.06-x86_64_arm-linux-gnueabihf/bin/arm-linux-gnueabihf-gcc
CXX=$WORK_DIR/gcc-linaro-12.3.1-2023.06-x86_64_arm-linux-gnueabihf/bin/arm-linux-gnueabihf-g++

git clone https://github.com/llvm/llvm-project --depth 1 -b release/$LLVM_VERSION.x
mkdir -p llvm-project/bhost
mkdir -p llvm-project/build

cd llvm-project/bhost
cmake -G Ninja ../llvm -DCMAKE_BUILD_TYPE=Release -DLLVM_TARGETS_TO_BUILD="X86" -DLLVM_ENABLE_PROJECTS="lld;clang;compiler-rt"
ninja clang-tblgen llvm-tblgen

cd $WORK_DIR/llvm-project/build
cmake -G Ninja ../llvm -DCMAKE_BUILD_TYPE=Release \
	-DCMAKE_INSTALL_PREFIX=$WORK_DIR/clang-arm \
	-DLLVM_TARGETS_TO_BUILD="ARM;X86" \
	-DLLVM_DEFAULT_TARGET_TRIPLE=arm-linux-gnueabihf \
	-DLLVM_TARGET_ARCH=ARM \
	-DCMAKE_C_COMPILER=$CC \
	-DCMAKE_CXX_COMPILER=$CXX \
	-DLLVM_TABLEGEN=$WORK_DIR/llvm-project/bhost/bin/llvm-tblgen \
	-DCLANG_TABLEGEN=$WORK_DIR/llvm-project/bhost/bin/clang-tblgen \
	-DLLVM_ENABLE_PROJECTS="lld;clang" \
	-DCLANG_DEFAULT_LINKER=lld \
	-DLLVM_ENABLE_PIC=ON \
	-DLLVM_PARALLEL_LINK_JOBS=1 \
	-DLLVM_BUILD_LLVM_DYLIB=ON \
	-DLLVM_LINK_LLVM_DYLIB=ON \
	-DLLVM_INSTALL_TOOLCHAIN_ONLY=ON \
	-DLLVM_INCLUDE_TESTS=OFF \
	-DCLANG_INCLUDE_TESTS=OFF \
	-DCLANG_TOOL_C_INDEX_TEST_BUILD=OFF \
	-DLLVM_ENABLE_LIBEDIT=OFF \
	-DCMAKE_SYSTEM_NAME="Linux" \
	-DCMAKE_CROSSCOMPILING=True \
	-DLLVM_BUILD_TOOLS=NO \
	/
ninja -j4 && ninja install

cd $WORK_DIR
tar --xz -cf clang-arm.tar clang-arm/
gh release create v$VERSION.2 clang-arm.tar -R valium007/clang -t "LLVM/Clang $LLVM_VERSION.2" -n "LLVM/Clang $LLVM_VERSION for arm linux" -p