199 lines · bash
1#!/usr/bin/env bash2# ===----------------------------------------------------------------------===##3#4# Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.5# See https://llvm.org/LICENSE.txt for license information.6# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception7#8# ===----------------------------------------------------------------------===##9 10set -e11 12PROGNAME="$(basename "${0}")"13 14function error() { printf "error: %s\n" "$*"; exit 1; }15 16function usage() {17cat <<EOF18Usage:19${PROGNAME} [options]20 21[-h|--help] Display this help and exit.22 23--llvm-root <DIR> Path to the root of the LLVM monorepo. Only the libcxx24 and libcxxabi directories are required.25 26--build-dir <DIR> Path to the directory to use for building. This will27 contain intermediate build products.28 29--install-dir <DIR> Path to the directory to install the library to.30 31--symbols-dir <DIR> Path to the directory to install the .dSYM bundle to.32 33--architectures "<arch>..." A whitespace separated list of architectures to build for.34 The library will be built for each architecture independently,35 and a universal binary containing all architectures will be36 created from that.37 38--headers-only Only install the header part of the library -- don't actually39 build the full library.40 41--version X[.Y[.Z]] The version of the library to encode in the dylib.42EOF43}44 45while [[ $# -gt 0 ]]; do46 case ${1} in47 -h|--help)48 usage49 exit 050 ;;51 --llvm-root)52 llvm_root="${2}"53 shift; shift54 ;;55 --build-dir)56 build_dir="${2}"57 shift; shift58 ;;59 --symbols-dir)60 symbols_dir="${2}"61 shift; shift62 ;;63 --install-dir)64 install_dir="${2}"65 shift; shift66 ;;67 --architectures)68 architectures="${2}"69 shift; shift70 ;;71 --headers-only)72 headers_only=true73 shift74 ;;75 --version)76 version="${2}"77 shift; shift78 ;;79 *)80 error "Unknown argument '${1}'"81 ;;82 esac83done84 85for arg in llvm_root build_dir symbols_dir install_dir architectures version; do86 if [ -z ${!arg+x} ]; then87 error "Missing required argument '--${arg//_/-}'"88 elif [ "${!arg}" == "" ]; then89 error "Argument to --${arg//_/-} must not be empty"90 fi91done92 93# Allow using relative paths94function realpath() {95 if [[ $1 = /* ]]; then echo "$1"; else echo "$(pwd)/${1#./}"; fi96}97for arg in llvm_root build_dir symbols_dir install_dir; do98 path="$(realpath "${!arg}")"99 eval "${arg}=\"${path}\""100done101 102function step() {103 separator="$(printf "%0.s-" $(seq 1 ${#1}))"104 echo105 echo "${separator}"106 echo "${1}"107 echo "${separator}"108}109 110for arch in ${architectures}; do111 # Construct the target-triple that we're testing for. Otherwise, the target triple is currently detected112 # as <arch>-apple-darwin<version> instead of <arch>-apple-macosx<version>, which trips up the test suite.113 # TODO: This shouldn't be necessary anymore if `clang -print-target-triple` behaved properly, see https://llvm.org/PR61762.114 # Then LLVM would guess the LLVM_DEFAULT_TARGET_TRIPLE properly and we wouldn't have to specify it.115 target=$(xcrun clang -arch ${arch} -xc - -### 2>&1 | grep --only-matching -E '"-triple" ".+?"' | grep --only-matching -E '"[^ ]+-apple-[^ ]+?"' | tr -d '"')116 117 mkdir -p "${build_dir}/${arch}"118 119 step "Building shims to make libc++ compatible with the system libc++ on Apple platforms when running the tests"120 shims_library="${build_dir}/${arch}/apple-system-shims.a"121 # Note that this doesn't need to match the Standard version used to build the rest of the library.122 # Also note that we explicitly enable sized deallocation when building the shims to ensure that we provide as123 # many symbols as possible.124 xcrun clang++ -c -std=c++2b -fsized-deallocation -target ${target} "${llvm_root}/libcxxabi/src/vendor/apple/shims.cpp" -static -o "${shims_library}"125 126 step "Building libc++.dylib and libc++abi.dylib for architecture ${arch}"127 xcrun cmake -S "${llvm_root}/runtimes" \128 -B "${build_dir}/${arch}" \129 -GNinja \130 -DCMAKE_MAKE_PROGRAM="$(xcrun --find ninja)" \131 -C "${llvm_root}/libcxx/cmake/caches/Apple.cmake" \132 -DLLVM_ENABLE_RUNTIMES="libcxx;libcxxabi" \133 -DCMAKE_INSTALL_PREFIX="${build_dir}/${arch}-install" \134 -DCMAKE_OSX_ARCHITECTURES="${arch}" \135 -DLIBCXXABI_LIBRARY_VERSION="${version}" \136 -DLIBCXX_LIBRARY_VERSION="${version}" \137 -DLIBCXX_TEST_PARAMS="target_triple=${target};apple_system_shims=${shims_library}" \138 -DLIBCXXABI_TEST_PARAMS="target_triple=${target};apple_system_shims=${shims_library}" \139 -DLIBUNWIND_TEST_PARAMS="target_triple=${target};apple_system_shims=${shims_library}"140 141 if [ "$headers_only" = true ]; then142 xcrun cmake --build "${build_dir}/${arch}" --target install-cxx-headers install-cxxabi-headers -- -v143 else144 xcrun cmake --build "${build_dir}/${arch}" --target install-cxx install-cxxabi -- -v145 fi146done147 148function universal_dylib() {149 dylib=${1}150 151 inputs=$(for arch in ${architectures}; do echo "${build_dir}/${arch}-install/lib/${dylib}"; done)152 153 step "Creating a universal dylib ${dylib} from the dylibs for all architectures"154 xcrun lipo -create ${inputs} -output "${build_dir}/${dylib}"155 156 step "Installing the (stripped) universal dylib to ${install_dir}/usr/lib"157 mkdir -p "${install_dir}/usr/lib"158 cp "${build_dir}/${dylib}" "${install_dir}/usr/lib/${dylib}"159 xcrun strip -S "${install_dir}/usr/lib/${dylib}"160 161 step "Installing the unstripped dylib and the dSYM bundle to ${symbols_dir}"162 xcrun dsymutil "${build_dir}/${dylib}" -o "${symbols_dir}/${dylib}.dSYM"163 cp "${build_dir}/${dylib}" "${symbols_dir}/${dylib}"164}165 166if [ "$headers_only" != true ]; then167 universal_dylib libc++.1.dylib168 universal_dylib libc++abi.dylib169 (cd "${install_dir}/usr/lib" && ln -s "libc++.1.dylib" libc++.dylib)170 171 experimental_libs=$(for arch in ${architectures}; do echo "${build_dir}/${arch}-install/lib/libc++experimental.a"; done)172 xcrun lipo -create ${experimental_libs} -output "${install_dir}/usr/lib/libc++experimental.a"173fi174 175# Install the headers by copying the headers from one of the built architectures176# into the install directory. Headers from all architectures should be the same.177step "Installing the libc++ and libc++abi headers to ${install_dir}/usr/include"178any_arch=$(echo ${architectures} | cut -d ' ' -f 1)179mkdir -p "${install_dir}/usr/include"180ditto "${build_dir}/${any_arch}-install/include" "${install_dir}/usr/include"181if [[ $EUID -eq 0 ]]; then # Only chown if we're running as root182 chown -R root:wheel "${install_dir}/usr/include"183fi184 185if [ "$headers_only" != true ]; then186 step "Installing the libc++ and libc++abi licenses"187 mkdir -p "${install_dir}/usr/local/OpenSourceLicenses"188 cp "${llvm_root}/libcxx/LICENSE.TXT" "${install_dir}/usr/local/OpenSourceLicenses/libcxx.txt"189 cp "${llvm_root}/libcxxabi/LICENSE.TXT" "${install_dir}/usr/local/OpenSourceLicenses/libcxxabi.txt"190 191 # Also install universal static archives for libc++ and libc++abi192 libcxx_archives=$(for arch in ${architectures}; do echo "${build_dir}/${arch}-install/lib/libc++.a"; done)193 libcxxabi_archives=$(for arch in ${architectures}; do echo "${build_dir}/${arch}-install/lib/libc++abi.a"; done)194 step "Creating universal static archives for libc++ and libc++abi from the static archives for each architecture"195 mkdir -p "${install_dir}/usr/local/lib/libcxx"196 xcrun libtool -static ${libcxx_archives} -o "${install_dir}/usr/local/lib/libcxx/libc++-static.a"197 xcrun libtool -static ${libcxxabi_archives} -o "${install_dir}/usr/local/lib/libcxx/libc++abi-static.a"198fi199