| #!/usr/bin/env bash |
| |
| set -ex |
| |
| source shared.sh |
| |
| LLVM=llvmorg-9.0.0 |
| |
| mkdir llvm-project |
| cd llvm-project |
| |
| curl -L https://github.com/llvm/llvm-project/archive/$LLVM.tar.gz | \ |
| tar xzf - --strip-components=1 |
| |
| yum install -y patch |
| patch -Np1 < ../llvm-project-centos.patch |
| |
| mkdir clang-build |
| cd clang-build |
| |
| # For whatever reason the default set of include paths for clang is different |
| # than that of gcc. As a result we need to manually include our sysroot's |
| # include path, /rustroot/include, to clang's default include path. |
| # |
| # Alsow there's this weird oddity with gcc where there's an 'include-fixed' |
| # directory that it generates. It turns out [1] that Centos 5's headers are so |
| # old that they're incompatible with modern C semantics. While gcc automatically |
| # fixes that clang doesn't account for this. Tell clang to manually include the |
| # fixed headers so we can successfully compile code later on. |
| # |
| # [1]: https://sourceware.org/ml/crossgcc/2008-11/msg00028.html |
| INC="/rustroot/include" |
| INC="$INC:/rustroot/lib/gcc/x86_64-unknown-linux-gnu/5.5.0/include-fixed" |
| INC="$INC:/usr/include" |
| |
| hide_output \ |
| cmake ../llvm \ |
| -DCMAKE_C_COMPILER=/rustroot/bin/gcc \ |
| -DCMAKE_CXX_COMPILER=/rustroot/bin/g++ \ |
| -DCMAKE_BUILD_TYPE=Release \ |
| -DCMAKE_INSTALL_PREFIX=/rustroot \ |
| -DLLVM_TARGETS_TO_BUILD=X86 \ |
| -DLLVM_ENABLE_PROJECTS="clang;lld" \ |
| -DC_INCLUDE_DIRS="$INC" |
| |
| hide_output make -j10 |
| hide_output make install |
| |
| cd ../.. |
| rm -rf llvm-project |