1#!/usr/bin/env bash 2#===----------------------------------------------------------------------===## 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-exception 7# 8#===----------------------------------------------------------------------===## 9 10set -e 11 12PROGNAME="$(basename "${0}")" 13 14function error() { printf "error: %s\n" "$*"; exit 1; } 15 16function usage() { 17cat <<EOF 18Usage: 19${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 libcxx 24 and libcxxabi directories are required. 25 26--build-dir <DIR> Path to the directory to use for building. This will 27 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--sdk <SDK> SDK used for building the library. This represents 34 the target platform that the library will run on. 35 You can get a list of SDKs with \`xcodebuild -showsdks\`. 36 37--architectures "<arch>..." A whitespace separated list of architectures to build for. 38 The library will be built for each architecture independently, 39 and a universal binary containing all architectures will be 40 created from that. 41 42--version X[.Y[.Z]] The version of the library to encode in the dylib. 43 44--cache <PATH> The CMake cache to use to control how the library gets built. 45EOF 46} 47 48while [[ $# -gt 0 ]]; do 49 case ${1} in 50 -h|--help) 51 usage 52 exit 0 53 ;; 54 --llvm-root) 55 llvm_root="${2}" 56 shift; shift 57 ;; 58 --build-dir) 59 build_dir="${2}" 60 shift; shift 61 ;; 62 --symbols-dir) 63 symbols_dir="${2}" 64 shift; shift 65 ;; 66 --install-dir) 67 install_dir="${2}" 68 shift; shift 69 ;; 70 --sdk) 71 sdk="${2}" 72 shift; shift 73 ;; 74 --architectures) 75 architectures="${2}" 76 shift; shift 77 ;; 78 --version) 79 version="${2}" 80 shift; shift 81 ;; 82 --cache) 83 cache="${2}" 84 shift; shift 85 ;; 86 *) 87 error "Unknown argument '${1}'" 88 ;; 89 esac 90done 91 92for arg in llvm_root build_dir symbols_dir install_dir sdk architectures version cache; do 93 if [ -z ${!arg+x} ]; then 94 error "Missing required argument '--${arg//_/-}'" 95 elif [ "${!arg}" == "" ]; then 96 error "Argument to --${arg//_/-} must not be empty" 97 fi 98done 99 100# Allow using relative paths 101function realpath() { 102 if [[ $1 = /* ]]; then echo "$1"; else echo "$(pwd)/${1#./}"; fi 103} 104for arg in llvm_root build_dir symbols_dir install_dir cache; do 105 path="$(realpath "${!arg}")" 106 eval "${arg}=\"${path}\"" 107done 108 109function step() { 110 separator="$(printf "%0.s-" $(seq 1 ${#1}))" 111 echo 112 echo "${separator}" 113 echo "${1}" 114 echo "${separator}" 115} 116 117install_name_dir="/usr/lib" 118dylib_name="libc++.1.dylib" 119make_symlink="yes" 120headers_prefix="${install_dir}" 121 122for arch in ${architectures}; do 123 step "Building libc++.dylib and libc++abi.dylib for architecture ${arch}" 124 mkdir -p "${build_dir}/${arch}" 125 (cd "${build_dir}/${arch}" && 126 xcrun --sdk "${sdk}" cmake "${llvm_root}/libcxx/utils/ci/runtimes" \ 127 -GNinja \ 128 -DCMAKE_MAKE_PROGRAM="$(xcrun --sdk "${sdk}" --find ninja)" \ 129 -DLLVM_ENABLE_PROJECTS="libcxx;libcxxabi" \ 130 -C "${cache}" \ 131 -DCMAKE_INSTALL_PREFIX="${build_dir}/${arch}-install" \ 132 -DCMAKE_INSTALL_NAME_DIR="${install_name_dir}" \ 133 -DCMAKE_OSX_ARCHITECTURES="${arch}" \ 134 -DLIBCXXABI_LIBRARY_VERSION="${version}" \ 135 -DLIBCXX_INCLUDE_BENCHMARKS=OFF \ 136 -DLIBCXX_INCLUDE_TESTS=OFF 137 ) 138 139 xcrun --sdk "${sdk}" cmake --build "${build_dir}/${arch}" --target install-cxx install-cxxabi -- -v 140done 141 142function universal_dylib() { 143 dylib=${1} 144 145 inputs=$(for arch in ${architectures}; do echo "${build_dir}/${arch}-install/lib/${dylib}"; done) 146 147 step "Creating a universal dylib ${dylib} from the dylibs for all architectures" 148 xcrun --sdk "${sdk}" lipo -create ${inputs} -output "${build_dir}/${dylib}" 149 150 step "Installing the (stripped) universal dylib to ${install_dir}/usr/lib" 151 mkdir -p "${install_dir}/usr/lib" 152 cp "${build_dir}/${dylib}" "${install_dir}/usr/lib/${dylib}" 153 xcrun --sdk "${sdk}" strip -S "${install_dir}/usr/lib/${dylib}" 154 155 step "Installing the unstripped dylib and the dSYM bundle to ${symbols_dir}" 156 xcrun --sdk "${sdk}" dsymutil "${build_dir}/${dylib}" -o "${symbols_dir}/${dylib}.dSYM" 157 cp "${build_dir}/${dylib}" "${symbols_dir}/${dylib}" 158} 159 160universal_dylib ${dylib_name} 161universal_dylib libc++abi.dylib 162 163if [[ "${make_symlink}" == "yes" ]]; then 164 (cd "${install_dir}/usr/lib" && ln -s "${dylib_name}" libc++.dylib) 165fi 166 167# Install the headers by copying the headers from one of the built architectures 168# into the install directory. Headers from all architectures should be the same. 169step "Installing the libc++ and libc++abi headers to ${headers_prefix}/usr/include" 170any_arch=$(echo ${architectures} | cut -d ' ' -f 1) 171mkdir -p "${headers_prefix}/usr/include" 172ditto "${build_dir}/${any_arch}-install/include" "${headers_prefix}/usr/include" 173ditto "${llvm_root}/libcxxabi/include" "${headers_prefix}/usr/include" # TODO: libcxxabi should install its headers in CMake 174if [[ $EUID -eq 0 ]]; then # Only chown if we're running as root 175 chown -R root:wheel "${headers_prefix}/usr/include" 176fi 177 178step "Installing the libc++ and libc++abi licenses" 179mkdir -p "${headers_prefix}/usr/local/OpenSourceLicenses" 180cp "${llvm_root}/libcxx/LICENSE.TXT" "${headers_prefix}/usr/local/OpenSourceLicenses/libcxx.txt" 181cp "${llvm_root}/libcxxabi/LICENSE.TXT" "${headers_prefix}/usr/local/OpenSourceLicenses/libcxxabi.txt" 182 183# Also install a static archive for libc++abi 184libcxxabi_archives=$(for arch in ${architectures}; do echo "${build_dir}/${arch}-install/lib/libc++abi.a"; done) 185step "Creating a universal libc++abi static archive from the static archives for each architecture" 186mkdir -p "${install_dir}/usr/local/lib/libcxx" 187xcrun --sdk "${sdk}" libtool -static ${libcxxabi_archives} -o "${install_dir}/usr/local/lib/libcxx/libc++abi-static.a" 188