90 lines
3.5 KiB
Plaintext
90 lines
3.5 KiB
Plaintext
# Description: WASI libc++ implementation for WebAssembly
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# URL: https://libcxx.llvm.org/
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# Maintainer: Danny Rawlins, crux at romster dot me
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# Depends on: clang wasi-libc wasi-compiler-rt
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name=wasi-libc++
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version=13.0.1
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release=1
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source=(https://github.com/llvm/llvm-project/releases/download/llvmorg-$version/llvm-$version.src.tar.xz
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https://github.com/llvm/llvm-project/releases/download/llvmorg-$version/libcxx-$version.src.tar.xz
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https://github.com/llvm/llvm-project/releases/download/llvmorg-$version/libcxxabi-$version.src.tar.xz
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WASI.cmake
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wasi-toolchain.cmake)
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build() {
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# Platform files have been copied from https://github.com/WebAssembly/wasi-sdk
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mkdir -p cmake/Platform
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cp WASI.cmake cmake/Platform
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mv libcxx-${version}.src libcxx
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mv libcxxabi-${version}.src libcxxabi
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mv llvm-${version}.src llvm
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# Build options are derived from https://github.com/WebAssembly/wasi-sdk/blob/main/Makefile
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# Currently, wasi-sdk requires C++ code be compiled with -fno-exceptions.
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# libc++abi is currently compiled with exception-handling support disabled.
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# https://github.com/WebAssembly/wasi-sdk/issues/52#issuecomment-530619365
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cmake -S libcxx -B build-libcxx -G Ninja \
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-D CMAKE_BUILD_TYPE=Release \
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-D CMAKE_C_COMPILER_WORKS=ON \
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-D CMAKE_CXX_COMPILER_WORKS=ON \
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-D CMAKE_MODULE_PATH="$SRC/cmake" \
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-D CMAKE_TOOLCHAIN_FILE="$SRC/wasi-toolchain.cmake" \
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-D CMAKE_STAGING_PREFIX=/usr/share/wasi-sysroot \
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-D LIBCXX_ENABLE_EXCEPTIONS:BOOL=OFF \
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-D LIBCXX_ENABLE_SHARED:BOOL=OFF \
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-D LIBCXX_ENABLE_THREADS:BOOL=OFF \
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-D LIBCXX_HAS_PTHREAD_API:BOOL=OFF \
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-D LIBCXX_HAS_EXTERNAL_THREAD_API:BOOL=OFF \
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-D LIBCXX_BUILD_EXTERNAL_THREAD_LIBRARY:BOOL=OFF \
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-D LIBCXX_HAS_WIN32_THREAD_API:BOOL=OFF \
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-D LIBCXX_ENABLE_EXPERIMENTAL_LIBRARY:BOOL=OFF \
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-D LIBCXX_ENABLE_FILESYSTEM:BOOL=OFF \
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-D LIBCXX_CXX_ABI=libcxxabi \
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-D LIBCXX_CXX_ABI_INCLUDE_PATHS=libcxxabi/include \
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-D LIBCXX_HAS_MUSL_LIBC:BOOL=ON \
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-D LIBCXX_ABI_VERSION=2 \
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-D WASI_SDK_PREFIX=/usr \
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-D CMAKE_C_FLAGS_RELEASE="-fno-exceptions --sysroot=/usr/share/wasi-sysroot" \
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-D CMAKE_CXX_FLAGS_RELEASE="-fno-exceptions --sysroot=/usr/share/wasi-sysroot" \
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-D LIBCXX_LIBDIR_SUFFIX=/wasm32-wasi
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cmake --build build-libcxx
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cmake -S libcxxabi -B build-libcxxabi -G Ninja \
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-D CMAKE_BUILD_TYPE=Release \
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-D CMAKE_C_COMPILER_WORKS=ON \
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-D CMAKE_CXX_COMPILER_WORKS=ON \
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-D CMAKE_MODULE_PATH="$SRC/cmake" \
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-D CMAKE_TOOLCHAIN_FILE="$SRC/wasi-toolchain.cmake" \
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-D CMAKE_STAGING_PREFIX=/usr/share/wasi-sysroot \
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-D LIBCXXABI_ENABLE_EXCEPTIONS:BOOL=OFF \
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-D LIBCXXABI_ENABLE_SHARED:BOOL=OFF \
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-D LIBCXXABI_ENABLE_THREADS:BOOL=OFF \
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-D LIBCXXABI_HAS_PTHREAD_API:BOOL=OFF \
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-D LIBCXXABI_HAS_EXTERNAL_THREAD_API:BOOL=OFF \
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-D LIBCXXABI_BUILD_EXTERNAL_THREAD_LIBRARY:BOOL=OFF \
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-D LIBCXXABI_HAS_WIN32_THREAD_API:BOOL=OFF \
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-D LIBCXXABI_SILENT_TERMINATE:BOOL=ON \
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-D LIBCXXABI_ENABLE_PIC:BOOL=OFF \
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-D UNIX:BOOL=ON \
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-D CXX_SUPPORTS_CXX11=ON \
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-D LIBCXXABI_LIBCXX_PATH=libcxx \
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-D LIBCXXABI_LIBCXX_INCLUDES="$SRC/build-libcxx/include/c++/v1" \
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-D WASI_SDK_PREFIX=/usr \
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-D CMAKE_C_FLAGS_RELEASE="-fno-exceptions --sysroot=/usr/share/wasi-sysroot" \
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-D CMAKE_CXX_FLAGS_RELEASE="-fno-exceptions --sysroot=/usr/share/wasi-sysroot" \
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-D LIBCXXABI_LIBDIR_SUFFIX=/wasm32-wasi
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cmake --build build-libcxxabi -v
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DESTDIR=$PKG cmake --install build-libcxx
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DESTDIR=$PKG cmake --install build-libcxxabi
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cd $PKG/usr/share/wasi-sysroot/lib/wasm32-wasi
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for f in *.a; do
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/usr/bin/llvm-ranlib $f
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/usr/bin/llvm-strip --strip-debug $f
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done
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}
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