068ea1beb4
Apparently clang is smart enough to look up runtime files missing from the sysroot in the installation directory automatically.
43 lines
1.9 KiB
Bash
Executable file
43 lines
1.9 KiB
Bash
Executable file
#!/usr/bin/env bash
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set -uxo pipefail
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# run from root build directory as in
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# ```
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# eval cmake ../.. $(../../script/prepare-llvm-macos.sh)
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# ```
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# use full LLVM release for compiling C++ code, but subset for compiling C code and distribution
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[[ -d llvm ]] || (mkdir llvm; gtar xf $1 --strip-components 1 --directory llvm)
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SDK=$(xcrun --show-sdk-path)
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mkdir -p stage1/{bin,lib/libc,include/clang}
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CP="gcp -d" # preserve symlinks
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# a C compiler!
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gcp -L llvm/bin/clang stage1/bin/
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# a linker!
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gcp -L llvm/bin/ld64.lld stage1/bin/
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# a static archiver!
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gcp -L llvm/bin/llvm-ar stage1/bin/
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# dependencies of the above
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$CP llvm/lib/lib{clang-cpp,LLVM}.dylib stage1/lib/
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#find stage1 -type f -exec strip --strip-unneeded '{}' \; 2> /dev/null
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# lean.h dependencies
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$CP llvm/lib/clang/*/include/{std*,__std*,limits}.h stage1/include/clang
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# runtime
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(cd llvm; $CP --parents lib/clang/*/lib/*/libclang_rt.osx.a ../stage1)
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gcp ${GMP:-/usr/local/opt/gmp}/lib/libgmp.a stage1/lib/
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# libSystem stub, includes libc
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cp $SDK/usr/lib/libSystem.tbd stage1/lib/libc
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# use for linking, use system libs for running
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gcp llvm/lib/lib{c++,c++abi,unwind}.dylib stage1/lib/libc
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echo -n " -DLEAN_STANDALONE=ON"
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# do not change C++ compiler; libc++ etc. being system libraries means there's no danger of conflicts,
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# and the custom clang++ outputs a myriad of warnings when consuming the SDK
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echo -n " -DCMAKE_C_COMPILER=$PWD/stage1/bin/clang"
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echo -n " -DGMP_LIBRARIES=lib/libgmp.a -DGMP_INCLUDE_DIR=/usr/local/opt/gmp/include"
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# set sysroot for C to make sure we have all necessary runtime files, but don't embed in `leanc` so users can still link to system libs
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# need no-macro-redefined for weird clang stdint.h
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echo -n " -DLEANC_INTERNAL_FLAGS='-I ROOT/include/clang -Wno-macro-redefined' -DLEANC_OPTS='--sysroot $PWD/stage1' -DLEANC_CC=ROOT/bin/clang"
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echo -n " -DLEANC_INTERNAL_LINKER_FLAGS='-L ROOT/lib -L ROOT/lib/libc -fuse-ld=lld'"
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# do not set `LEAN_CC` for tests
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echo -n " -DLEAN_TEST_VARS=''"
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