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