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 "$0")" && pwd)/../shared.sh"
12 curl -f "${MIRRORS_BASE}/clang%2Bllvm-9.0.0-x86_64-darwin-apple.tar.xz" | tar xJf -
14 ciCommandSetEnv CC "$(pwd)/clang+llvm-9.0.0-x86_64-darwin-apple/bin/clang"
15 ciCommandSetEnv CXX "$(pwd)/clang+llvm-9.0.0-x86_64-darwin-apple/bin/clang++"
17 # macOS 10.15 onwards doesn't have libraries in /usr/include anymore: those
18 # are now located deep into the filesystem, under Xcode's own files. The
19 # native clang is configured to use the correct path, but our custom one
20 # doesn't. This sets the SDKROOT environment variable to the SDK so that
21 # our own clang can figure out the correct include path on its own.
22 ciCommandSetEnv SDKROOT "$(xcrun --sdk macosx --show-sdk-path)"
24 # Configure `AR` specifically so rustbuild doesn't try to infer it as
25 # `clang-ar` by accident.
26 ciCommandSetEnv AR "ar"
27 elif isWindows && [[ ${CUSTOM_MINGW-0} -ne 1 ]]; then
28 # If we're compiling for MSVC then we, like most other distribution builders,
29 # switch to clang as the compiler. This'll allow us eventually to enable LTO
30 # amongst LLVM and rustc. Note that we only do this on MSVC as I don't think
31 # clang has an output mode compatible with MinGW that we need. If it does we
32 # should switch to clang for MinGW as well!
34 # Note that the LLVM installer is an NSIS installer
36 # Original downloaded here came from
37 # http://releases.llvm.org/9.0.0/LLVM-9.0.0-win64.exe
38 # That installer was run through `wine ./installer.exe /S /NCRC` on Linux
39 # and then the resulting installation directory (found in
40 # `$HOME/.wine/drive_c/Program Files/LLVM`) was packaged up into a tarball.
41 # We've had issues otherwise that the installer will randomly hang, provide
42 # not a lot of useful information, pollute global state, etc. In general the
43 # tarball is just more confined and easier to deal with when working with
44 # various CI environments.
48 curl -f "${MIRRORS_BASE}/LLVM-9.0.0-win64.tar.gz" | tar xzf -
49 ciCommandSetEnv RUST_CONFIGURE_ARGS \
50 "${RUST_CONFIGURE_ARGS} --set llvm.clang-cl=$(pwd)/clang-rust/bin/clang-cl.exe"