packages/wasi-libc++/PKGBUILD

# POWER Maintainer: Alexander Baldeck <alex.bldck@gmail.com>
# Maintainer: Frederik Schwan <freswa at archlinux dot org>

pkgbase=wasi-libc++
pkgname=(wasi-libc++ wasi-libc++abi)
pkgver=19.1.6
pkgrel=2
pkgdesc="WASI LLVM C++ standard library"
url="https://libcxx.llvm.org/"
license=('Apache-2.0 WITH LLVM-exception')
arch=(any)
depends=('wasi-libc' 'wasi-compiler-rt')
makedepends=('cmake' 'ninja' 'python' 'clang' 'llvm' 'lld' 'util-linux')
source=("https://github.com/llvm/llvm-project/releases/download/llvmorg-$pkgver/llvm-project-$pkgver.src.tar.xz"{,.sig}
        no-normalize-triple.diff
        WASI.cmake
        wasi-sdk.cmake)
b2sums=('b35ab0c754f28c850ac6fd4ee584e963b1d5cf06885c59827ee4ac11f93cde5b8e0268fbed560839137de2c495c9da2b889331cd12a8a02958d8e0cbdbed2607'
        'SKIP'
        'cdf8d39eb9c11ba363159f995bb7236a11fa5c42d2bc92f7253fb3429e552020902f54afe8a93782b004d55387100eaf84d651809e7d171b2a19c7f086ba119e'
        'c829d807c257921fddb8c4d3752ad2291a2beb116d414dd31e34b7f6b01599d8c4807db87ef9930456ed8c9f30e8648e77028fa0b903c3a5ea840514f6022cf4'
        '9f20eaa64069d20510a5ba6acdedfa4bbf723e1da13792bbbdfc57cc20d232962f5603a56c9723879624ab65e18f3770fda509dc76e3f099c3744acbfeabafc2')
options=('!lto' 'staticlibs' '!debug')
validpgpkeys=(
  '474E22316ABF4785A88C6E8EA2C794A986419D8A' # Tom Stellard <tstellar@redhat.com>
  'D574BD5D1D0E98895E3BF90044F2485E45D59042' # Tobias Hieta <tobias@hieta.se>
)

_targets=(wasm32-wasi wasm32-wasip1 wasm32-wasip1-threads wasm32-wasip2)

prepare() {
  cd llvm-project-$pkgver.src

  # Don't normalize the target triple - causes wrong multiarch dir
  # (also see getMultiarchTriple in clang/lib/Driver/ToolChains/WebAssembly.cpp)
  patch -Np1 -i ../no-normalize-triple.diff

  # Platform files have been copied from
  # https://github.com/WebAssembly/wasi-sdk
  mkdir -p cmake/Platform
  cp ../WASI.cmake cmake/Platform
}

build() {
  # Build options are derived from
  # https://github.com/WebAssembly/wasi-sdk/blob/main/Makefile

  # remove compiler options not supported by the wasi targets
  local sanitize_flags=(
    -r
    -e 's/-fcf-protection ?//'
    -e 's/-fexceptions ?//'
    -e 's/-fstack-clash-protection ?//'
    -e 's/-march=x86-64 ?//'
    -e 's/-mtune=generic ?//'
    -e 's/-mcpu=[a-zA-Z0-9]+ //'
  )
  CFLAGS="$(<<<"$CFLAGS" sed "${sanitize_flags[@]}")"
  CXXFLAGS="$(<<<"$CXXFLAGS" sed "${sanitize_flags[@]}")"

  local target threads_flag threads_cflags
  for target in "${_targets[@]}"; do
    if [[ ${target} == *-threads ]]; then
      threads_flag=ON
      threads_cflags=-pthread
    else
      threads_flag=OFF
      threads_cflags=
    fi

    local cmake_options=(
      -S llvm-project-$pkgver.src/runtimes
      -B build-$target
      -G Ninja
      -DCMAKE_C_COMPILER_WORKS=ON
      -DCMAKE_CXX_COMPILER_WORKS=ON
      -DCMAKE_AR=/usr/bin/ar
      -DCMAKE_TOOLCHAIN_FILE="$srcdir/wasi-sdk.cmake"
      -DCMAKE_STAGING_PREFIX=/usr/share/wasi-sysroot
      -DLIBCXXABI_USE_LLVM_UNWINDER:BOOL=OFF
      -DLIBCXX_ENABLE_THREADS:BOOL=$threads_flag
      -DLIBCXX_HAS_PTHREAD_API:BOOL=$threads_flag
      -DLIBCXX_HAS_EXTERNAL_THREAD_API:BOOL=OFF
      -DLIBCXX_BUILD_EXTERNAL_THREAD_LIBRARY:BOOL=OFF
      -DLIBCXX_HAS_WIN32_THREAD_API:BOOL=OFF
      -DLLVM_COMPILER_CHECKED:BOOL=ON
      -DLLVM_RUNTIMES_LINKING_WORKS:BOOL=ON
      -DLLVM_ENABLE_PER_TARGET_RUNTIME_DIR:BOOL=ON
      -DLLVM_DEFAULT_TARGET_TRIPLE=$target
      -DCMAKE_BUILD_TYPE=Release
      -DLIBCXX_ENABLE_SHARED:BOOL=OFF
      -DLIBCXX_ENABLE_EXCEPTIONS:BOOL=OFF
      -DLIBCXX_ENABLE_FILESYSTEM:BOOL=ON
      -DLIBCXX_ENABLE_ABI_LINKER_SCRIPT:BOOL=OFF
      -DLIBCXX_CXX_ABI=libcxxabi
      -DLIBCXX_HAS_MUSL_LIBC:BOOL=ON
      -DLIBCXX_ABI_VERSION=2
      -DLIBCXXABI_ENABLE_EXCEPTIONS:BOOL=OFF
      -DLIBCXXABI_ENABLE_SHARED:BOOL=OFF
      -DLIBCXXABI_SILENT_TERMINATE:BOOL=ON
      -DLIBCXXABI_ENABLE_THREADS:BOOL=$threads_flag
      -DLIBCXXABI_HAS_PTHREAD_API:BOOL=$threads_flag
      -DLIBCXXABI_HAS_EXTERNAL_THREAD_API:BOOL=OFF
      -DLIBCXXABI_BUILD_EXTERNAL_THREAD_LIBRARY:BOOL=OFF
      -DLIBCXXABI_HAS_WIN32_THREAD_API:BOOL=OFF
      -DLIBCXXABI_USE_LLVM_UNWINDER:BOOL=OFF
      -DWASI_SDK_PREFIX=/usr
      -DUNIX:BOOL=ON
      -DLIBCXX_INCLUDE_TESTS:BOOL=OFF
      -DLIBCXX_INCLUDE_BENCHMARKS:BOOL=OFF
      -DCMAKE_SYSROOT=/usr/share/wasi-sysroot
      -DCMAKE_C_FLAGS="$CFLAGS $threads_cflags --target=$target"
      -DCMAKE_CXX_FLAGS="$CXXFLAGS $threads_cflags --target=$target"
      -DLLVM_ENABLE_RUNTIMES="libcxx;libcxxabi"
      -DCXX_SUPPORTS_CLASS_MEMACCESS_FLAG:BOOL=OFF
      -DCXX_SUPPORTS_COVERED_SWITCH_DEFAULT_FLAG:BOOL=ON
      -DCXX_SUPPORTS_CXX11:BOOL=ON
      -DCXX_SUPPORTS_EHA_FLAG:BOOL=OFF
      -DCXX_SUPPORTS_EHS_FLAG:BOOL=OFF
      -DCXX_SUPPORTS_FALIGNED_ALLOCATION_FLAG:BOOL=ON
      -DCXX_SUPPORTS_FDATA_SECTIONS:BOOL=ON
      -DCXX_SUPPORTS_FNO_EXCEPTIONS_FLAG:BOOL=ON
      -DCXX_SUPPORTS_FSTRICT_ALIASING_FLAG:BOOL=ON
      -DCXX_SUPPORTS_FVISIBILITY_EQ_HIDDEN_FLAG:BOOL=ON
      -DCXX_SUPPORTS_FVISIBILITY_INLINES_HIDDEN_FLAG:BOOL=ON
      -DCXX_SUPPORTS_IMPLICIT_FALLTHROUGH_FLAG:BOOL=ON
      -DCXX_SUPPORTS_MISLEADING_INDENTATION_FLAG:BOOL=ON
      -DCXX_SUPPORTS_MISSING_FIELD_INITIALIZERS_FLAG:BOOL=ON
      -DCXX_SUPPORTS_NOEXCEPT_TYPE_FLAG:BOOL=OFF
      -DCXX_SUPPORTS_NOSTDINCXX_FLAG:BOOL=ON
      -DCXX_SUPPORTS_NOSTDLIBXX_FLAG:BOOL=ON
      -DCXX_SUPPORTS_PEDANTIC_FLAG:BOOL=ON
      -DCXX_SUPPORTS_STRING_CONVERSION_FLAG:BOOL=ON
      -DCXX_SUPPORTS_SUGGEST_OVERRIDE_FLAG:BOOL=ON
      -DCXX_SUPPORTS_UNWINDLIB_EQ_NONE_FLAG:BOOL=ON
      -DCXX_SUPPORTS_WALL_FLAG:BOOL=ON
      -DCXX_SUPPORTS_WCHAR_SUBSCRIPTS_FLAG:BOOL=ON
      -DCXX_SUPPORTS_WCONVERSION_FLAG:BOOL=ON
      -DCXX_SUPPORTS_WERROR_DATE_TIME:BOOL=ON
      -DCXX_SUPPORTS_WERROR_EQ_RETURN_TYPE_FLAG:BOOL=ON
      -DCXX_SUPPORTS_WERROR_UNGUARDED_AVAILABILITY_NEW:BOOL=ON
      -DCXX_SUPPORTS_WEXTRA_FLAG:BOOL=ON
      -DCXX_SUPPORTS_WEXTRA_SEMI_FLAG:BOOL=ON
      -DCXX_SUPPORTS_WFORMAT_NONLITERAL_FLAG:BOOL=ON
      -DCXX_SUPPORTS_WMISMATCHED_TAGS_FLAG:BOOL=ON
      -DCXX_SUPPORTS_WMISSING_BRACES_FLAG:BOOL=ON
      -DCXX_SUPPORTS_WNEWLINE_EOF_FLAG:BOOL=ON
      -DCXX_SUPPORTS_WNO_COVERED_SWITCH_DEFAULT_FLAG:BOOL=ON
      -DCXX_SUPPORTS_WNO_ERROR_FLAG:BOOL=ON
      -DCXX_SUPPORTS_WNO_LONG_LONG_FLAG:BOOL=ON
      -DCXX_SUPPORTS_WNO_SUGGEST_OVERRIDE_FLAG:BOOL=ON
      -DCXX_SUPPORTS_WNO_UNUSED_PARAMETER_FLAG:BOOL=ON
      -DCXX_SUPPORTS_WNO_USER_DEFINED_LITERALS_FLAG:BOOL=ON
      -DCXX_SUPPORTS_WSHADOW_FLAG:BOOL=ON
      -DCXX_SUPPORTS_WSHORTEN_64_TO_32_FLAG:BOOL=ON
      -DCXX_SUPPORTS_WSIGN_COMPARE_FLAG:BOOL=ON
      -DCXX_SUPPORTS_WSIGN_CONVERSION_FLAG:BOOL=ON
      -DCXX_SUPPORTS_WSTRICT_ALIASING_EQ_2_FLAG:BOOL=ON
      -DCXX_SUPPORTS_WSTRICT_OVERFLOW_EQ_4_FLAG:BOOL=ON
      -DCXX_SUPPORTS_WUNDEF_FLAG:BOOL=ON
      -DCXX_SUPPORTS_WUNUSED_FUNCTION_FLAG:BOOL=ON
      -DCXX_SUPPORTS_WUNUSED_PARAMETER_FLAG:BOOL=ON
      -DCXX_SUPPORTS_WUNUSED_VARIABLE_FLAG:BOOL=ON
      -DCXX_SUPPORTS_WWRITE_STRINGS_FLAG:BOOL=ON
      -DCXX_SUPPORTS_WX_FLAG:BOOL=OFF
      -DCXX_SUPPORTS_W_FLAG:BOOL=ON
      -DCXX_WONT_WARN_ON_FINAL_NONVIRTUALDTOR:BOOL=ON
      -DCXX_WSUGGEST_OVERRIDE_ALLOWS_ONLY_FINAL:BOOL=ON
      -DLINKER_SUPPORTS_COLOR_DIAGNOSTICS:BOOL=ON
      -DSUPPORTS_FVISIBILITY_INLINES_HIDDEN_FLAG:BOOL=ON
    )

    cmake "${cmake_options[@]}"
    ninja -C build-$target cxx cxxabi
  done
}

# Do not remove the space before the () or commitpkg will
# accidentally to run this function on the system (!!!)
package_wasi-libc++ () {
  depends+=("wasi-libc++abi=$pkgver-$pkgrel")

  local target
  for target in "${_targets[@]}"; do
    DESTDIR="$pkgdir" ninja -C build-$target install-cxx
  done

  # reduce duplication
  hardlink -c "$pkgdir/usr/share/wasi-sysroot"

  install -Dm0644 llvm-project-$pkgver.src/libcxx/CREDITS.TXT "$pkgdir"/usr/share/licenses/"$pkgname"/CREDITS
  install -Dm0644 llvm-project-$pkgver.src/libcxx/LICENSE.TXT "$pkgdir"/usr/share/licenses/"$pkgname"/LICENSE
}

package_wasi-libc++abi() {
  pkgdesc="Low level support for the $pkgdesc"

  local target
  for target in "${_targets[@]}"; do
    DESTDIR="$pkgdir" ninja -C build-$target install-cxxabi
  done

  # reduce duplication
  hardlink -c "$pkgdir/usr/share/wasi-sysroot"

  install -Dm0644 llvm-project-$pkgver.src/libcxxabi/CREDITS.TXT "$pkgdir"/usr/share/licenses/"$pkgname"/CREDITS
  install -Dm0644 llvm-project-$pkgver.src/libcxxabi/LICENSE.TXT "$pkgdir"/usr/share/licenses/"$pkgname"/LICENSE
}