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188 lines
6.6 KiB
188 lines
6.6 KiB
4 months ago
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#!/usr/bin/env bash
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#===----------------------------------------------------------------------===##
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#
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# Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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# See https://llvm.org/LICENSE.txt for license information.
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# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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#
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#===----------------------------------------------------------------------===##
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set -e
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PROGNAME="$(basename "${0}")"
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function error() { printf "error: %s\n" "$*"; exit 1; }
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function usage() {
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cat <<EOF
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Usage:
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${PROGNAME} [options]
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[-h|--help] Display this help and exit.
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--llvm-root <DIR> Path to the root of the LLVM monorepo. Only the libcxx
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and libcxxabi directories are required.
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--build-dir <DIR> Path to the directory to use for building. This will
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contain intermediate build products.
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--install-dir <DIR> Path to the directory to install the library to.
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--symbols-dir <DIR> Path to the directory to install the .dSYM bundle to.
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--sdk <SDK> SDK used for building the library. This represents
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the target platform that the library will run on.
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You can get a list of SDKs with \`xcodebuild -showsdks\`.
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--architectures "<arch>..." A whitespace separated list of architectures to build for.
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The library will be built for each architecture independently,
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and a universal binary containing all architectures will be
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created from that.
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--version X[.Y[.Z]] The version of the library to encode in the dylib.
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--cache <PATH> The CMake cache to use to control how the library gets built.
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EOF
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}
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while [[ $# -gt 0 ]]; do
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case ${1} in
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-h|--help)
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usage
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exit 0
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;;
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--llvm-root)
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llvm_root="${2}"
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shift; shift
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;;
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--build-dir)
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build_dir="${2}"
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shift; shift
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;;
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--symbols-dir)
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symbols_dir="${2}"
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shift; shift
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;;
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--install-dir)
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install_dir="${2}"
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shift; shift
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;;
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--sdk)
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sdk="${2}"
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shift; shift
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;;
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--architectures)
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architectures="${2}"
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shift; shift
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;;
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--version)
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version="${2}"
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shift; shift
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;;
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--cache)
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cache="${2}"
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shift; shift
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;;
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*)
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error "Unknown argument '${1}'"
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;;
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esac
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done
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for arg in llvm_root build_dir symbols_dir install_dir sdk architectures version cache; do
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if [ -z ${!arg+x} ]; then
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error "Missing required argument '--${arg//_/-}'"
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elif [ "${!arg}" == "" ]; then
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error "Argument to --${arg//_/-} must not be empty"
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fi
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done
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# Allow using relative paths
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function realpath() {
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if [[ $1 = /* ]]; then echo "$1"; else echo "$(pwd)/${1#./}"; fi
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}
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for arg in llvm_root build_dir symbols_dir install_dir cache; do
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path="$(realpath "${!arg}")"
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eval "${arg}=\"${path}\""
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done
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function step() {
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separator="$(printf "%0.s-" $(seq 1 ${#1}))"
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echo
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echo "${separator}"
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echo "${1}"
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echo "${separator}"
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}
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install_name_dir="/usr/lib"
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dylib_name="libc++.1.dylib"
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make_symlink="yes"
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headers_prefix="${install_dir}"
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for arch in ${architectures}; do
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step "Building libc++.dylib and libc++abi.dylib for architecture ${arch}"
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mkdir -p "${build_dir}/${arch}"
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(cd "${build_dir}/${arch}" &&
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xcrun --sdk "${sdk}" cmake "${llvm_root}/libcxx/utils/ci/runtimes" \
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-GNinja \
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-DCMAKE_MAKE_PROGRAM="$(xcrun --sdk "${sdk}" --find ninja)" \
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-DLLVM_ENABLE_PROJECTS="libcxx;libcxxabi" \
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-C "${cache}" \
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-DCMAKE_INSTALL_PREFIX="${build_dir}/${arch}-install" \
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-DCMAKE_INSTALL_NAME_DIR="${install_name_dir}" \
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-DCMAKE_OSX_ARCHITECTURES="${arch}" \
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-DLIBCXXABI_LIBRARY_VERSION="${version}" \
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-DLIBCXX_INCLUDE_BENCHMARKS=OFF \
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-DLIBCXX_INCLUDE_TESTS=OFF
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)
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xcrun --sdk "${sdk}" cmake --build "${build_dir}/${arch}" --target install-cxx install-cxxabi -- -v
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done
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function universal_dylib() {
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dylib=${1}
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inputs=$(for arch in ${architectures}; do echo "${build_dir}/${arch}-install/lib/${dylib}"; done)
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step "Creating a universal dylib ${dylib} from the dylibs for all architectures"
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xcrun --sdk "${sdk}" lipo -create ${inputs} -output "${build_dir}/${dylib}"
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step "Installing the (stripped) universal dylib to ${install_dir}/usr/lib"
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mkdir -p "${install_dir}/usr/lib"
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cp "${build_dir}/${dylib}" "${install_dir}/usr/lib/${dylib}"
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xcrun --sdk "${sdk}" strip -S "${install_dir}/usr/lib/${dylib}"
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step "Installing the unstripped dylib and the dSYM bundle to ${symbols_dir}"
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xcrun --sdk "${sdk}" dsymutil "${build_dir}/${dylib}" -o "${symbols_dir}/${dylib}.dSYM"
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cp "${build_dir}/${dylib}" "${symbols_dir}/${dylib}"
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}
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universal_dylib ${dylib_name}
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universal_dylib libc++abi.dylib
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if [[ "${make_symlink}" == "yes" ]]; then
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(cd "${install_dir}/usr/lib" && ln -s "${dylib_name}" libc++.dylib)
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fi
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# Install the headers by copying the headers from one of the built architectures
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# into the install directory. Headers from all architectures should be the same.
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step "Installing the libc++ and libc++abi headers to ${headers_prefix}/usr/include"
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any_arch=$(echo ${architectures} | cut -d ' ' -f 1)
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mkdir -p "${headers_prefix}/usr/include"
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ditto "${build_dir}/${any_arch}-install/include" "${headers_prefix}/usr/include"
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ditto "${llvm_root}/libcxxabi/include" "${headers_prefix}/usr/include" # TODO: libcxxabi should install its headers in CMake
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if [[ $EUID -eq 0 ]]; then # Only chown if we're running as root
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chown -R root:wheel "${headers_prefix}/usr/include"
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fi
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step "Installing the libc++ and libc++abi licenses"
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mkdir -p "${headers_prefix}/usr/local/OpenSourceLicenses"
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cp "${llvm_root}/libcxx/LICENSE.TXT" "${headers_prefix}/usr/local/OpenSourceLicenses/libcxx.txt"
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cp "${llvm_root}/libcxxabi/LICENSE.TXT" "${headers_prefix}/usr/local/OpenSourceLicenses/libcxxabi.txt"
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# Also install a static archive for libc++abi
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libcxxabi_archives=$(for arch in ${architectures}; do echo "${build_dir}/${arch}-install/lib/libc++abi.a"; done)
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step "Creating a universal libc++abi static archive from the static archives for each architecture"
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mkdir -p "${install_dir}/usr/local/lib/libcxx"
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xcrun --sdk "${sdk}" libtool -static ${libcxxabi_archives} -o "${install_dir}/usr/local/lib/libcxx/libc++abi-static.a"
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