# Description: LLVM compiler backend
# URL: http://llvm.org/
# Maintainer: Thomas Penteker, tek at serverop dot de
# Depends on: cmake libxml2 ninja

name=llvm
version=11.1.0
release=1
source=(https://github.com/llvm/llvm-project/releases/download/llvmorg-$version/$name-$version.src.tar.xz
  llvm-config.h)

build() {
  export CC=gcc
  export CXX=g++

  cmake -S $name-$version.src -B build -G Ninja \
    -D CMAKE_INSTALL_PREFIX=/usr \
    -D CMAKE_BUILD_TYPE=Release \
    -D CMAKE_C_FLAGS_RELEASE="$CFLAGS" \
    -D CMAKE_CXX_FLAGS_RELEASE="$CXXFLAGS" \
    -D LLVM_TARGETS_TO_BUILD='AArch64' \
    -D LLVM_BUILD_LLVM_DYLIB=1 \
    -D LLVM_LINK_LLVM_DYLIB=1 \
    -D LLVM_PARALLEL_COMPILE_JOBS="${JOBS:-1}" \
    -D LLVM_INCLUDE_EXAMPLES=0 \
    -D LLVM_INCLUDE_TESTS=0 \
    -D LLVM_ENABLE_FFI=1 \
    -D LLVM_ENABLE_RTTI=1 \
    -D LLVM_ENABLE_OCAMLDOC=0 \
    -D LLVM_INSTALL_UTILS=1 \
    -Wno-dev

  cmake --build build
  DESTDIR=$PKG cmake --install build

  # multilib stub
  mv $PKG/usr/include/llvm/Config/llvm-config{,-64}.h
  install -m 0644 $SRC/llvm-config.h $PKG/usr/include/llvm/Config/
}