2 # This script installs clang on the local machine. Note that we don't install
3 # clang on Linux since its compiler story is just so different. Each container
4 # has its own toolchain configured appropriately already.
9 source "$(cd "$(dirname "$0")" && pwd)/../shared.sh"
11 # Update both macOS's and Windows's tarballs when bumping the version here.
15 # If the job selects a specific Xcode version, use that instead of
16 # downloading our own version.
17 if [[ ${USE_XCODE_CLANG-0} -eq 1 ]]; then
18 bindir="$(xcode-select --print-path)/Toolchains/XcodeDefault.xctoolchain/usr/bin"
20 file="${MIRRORS_BASE}/clang%2Bllvm-${LLVM_VERSION}-x86_64-apple-darwin.tar.xz"
21 retry curl -f "${file}" -o "clang+llvm-${LLVM_VERSION}-x86_64-apple-darwin.tar.xz"
22 tar xJf "clang+llvm-${LLVM_VERSION}-x86_64-apple-darwin.tar.xz"
23 bindir="$(pwd)/clang+llvm-${LLVM_VERSION}-x86_64-apple-darwin/bin"
26 ciCommandSetEnv CC "${bindir}/clang"
27 ciCommandSetEnv CXX "${bindir}/clang++"
29 # macOS 10.15 onwards doesn't have libraries in /usr/include anymore: those
30 # are now located deep into the filesystem, under Xcode's own files. The
31 # native clang is configured to use the correct path, but our custom one
32 # doesn't. This sets the SDKROOT environment variable to the SDK so that
33 # our own clang can figure out the correct include path on its own.
34 ciCommandSetEnv SDKROOT "$(xcrun --sdk macosx --show-sdk-path)"
36 # Configure `AR` specifically so rustbuild doesn't try to infer it as
37 # `clang-ar` by accident.
38 ciCommandSetEnv AR "ar"
39 elif isWindows && [[ ${CUSTOM_MINGW-0} -ne 1 ]]; then
41 if [[ ${WINDOWS_SDK_20348_HACK-0} -eq 1 ]]; then
42 rm -rf '/c/Program Files (x86)/Windows Kits/10/include/10.0.20348.0'
43 mv '/c/Program Files (x86)/Windows Kits/10/include/'10.0.{19041,20348}.0
46 # If we're compiling for MSVC then we, like most other distribution builders,
47 # switch to clang as the compiler. This'll allow us eventually to enable LTO
48 # amongst LLVM and rustc. Note that we only do this on MSVC as I don't think
49 # clang has an output mode compatible with MinGW that we need. If it does we
50 # should switch to clang for MinGW as well!
52 # The LLVM installer is an NSIS installer, which we can extract with 7z. We
53 # don't want to run the installer directly; extracting it is more reliable
56 mkdir -p citools/clang-rust
58 retry curl -f "${MIRRORS_BASE}/LLVM-${LLVM_VERSION}-win64.exe" \
59 -o "LLVM-${LLVM_VERSION}-win64.exe"
60 7z x -oclang-rust/ "LLVM-${LLVM_VERSION}-win64.exe"
61 ciCommandSetEnv RUST_CONFIGURE_ARGS \
62 "${RUST_CONFIGURE_ARGS} --set llvm.clang-cl=$(pwd)/clang-rust/bin/clang-cl.exe"
66 # GitHub image 20210928.2 added LLVM, but it is broken (and we don't want
68 rm -rf /c/Program\ Files/LLVM