42 lines
2.3 KiB
Bash
Executable file
42 lines
2.3 KiB
Bash
Executable file
#!/usr/bin/env bash
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set -uo pipefail
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# run from root build directory (from inside nix-shell or otherwise defining GLIBC/GMP) as in
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# ```
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# eval cmake ../.. $(../../script/prepare-llvm-linux.sh ~/Downloads/clang+llvm-13.0.0-x86_64-linux-gnu-ubuntu-16.04.tar.xz)
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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; tar xf $1 --strip-components 1 --directory llvm)
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mkdir -p stage1/{bin,lib,lib/glibc,include/clang}
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CP="cp -d" # preserve symlinks
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# a C compiler!
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$CP $(realpath llvm/bin/clang) stage1/bin/clang
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# a linker!
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$CP llvm/bin/{lld,ld.lld} stage1/bin/
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# dependencies of the above
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$CP llvm/lib/lib{clang-cpp,LLVM}*.so* stage1/lib/
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# clang can't even find its own deps in a standard build? ¯\_(ツ)_/¯
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ln llvm/lib/x86*/* llvm/lib
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# ...nor are the rpaths sensible
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patchelf --set-rpath '$ORIGIN' llvm/lib/libc++.so.*
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# lean.h dependencies
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$CP llvm/lib/clang/*/include/{std*,__std*,limits}.h stage1/include/clang
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# ELF dependencies, must be put there for `--sysroot`
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$CP $GLIBC/lib/crt* llvm/lib/
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$CP $GLIBC/lib/crt* stage1/lib/
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# runtime
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(cd llvm; $CP --parents lib/clang/*/lib/*/{*crt{begin,end}.o,libclang_rt.builtins*} ../stage1)
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$CP llvm/lib/lib{c++,c++abi,unwind}.* $GMP/lib/libgmp.a stage1/lib/
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# glibc: use for linking (so Lean programs don't embed newer symbol versions), but not for running (because libc.so, librt.so, and ld.so must be compatible)!
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$CP $GLIBC/lib/libc_nonshared.a stage1/lib/glibc
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for f in $GLIBC/lib/lib{c,dl,m,rt,pthread}-*; do b=$(basename $f); cp $f stage1/lib/glibc/${b%-*}.so; done
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OPTIONS=()
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echo -n " -DCMAKE_C_COMPILER=$PWD/stage1/bin/clang -DCMAKE_CXX_COMPILER=$PWD/llvm/bin/clang++ -DLEAN_CXX_STDLIB='-Wl,-Bstatic -lc++ -lc++abi -Wl,-Bdynamic'"
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# allow C++ code to include /usr since it needs quite a few more headers
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echo -n " -DLEAN_EXTRA_CXX_FLAGS='--sysroot $PWD/llvm --stdlib=libc++ -I/usr/include -I/usr/include/x86_64-linux-gnu'"
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echo -n " -DLEANC_INTERNAL_FLAGS='--sysroot ROOT -I ROOT/include/clang' -DLEANC_CC=ROOT/bin/clang"
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echo -n " -DLEANC_INTERNAL_LINKER_FLAGS='-L ROOT/lib -L ROOT/lib/glibc ROOT/lib/glibc/libc_nonshared.a --rtlib=compiler-rt -static-libgcc -Wl,-Bstatic -lgmp -lunwind -Wl,-Bdynamic -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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