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fix: ld.so linking on Linux (#8228)

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This PR fixes an issue where, depending on the host glibc version,
Lean-built executables fail with an assertion in `ld.so`.
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Sebastian Ullrich 2025-05-05 13:50:59 +02:00 • committed by GitHub
parent 208ff3e2b3
commit cdb18f48cd
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1 changed files with 3 additions and 2 deletions
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5
script/prepare-llvm-linux.sh
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@ -68,8 +68,9 @@ fi
# use `-nostdinc` to make sure headers are not visible by default (in particular, not to `#include_next` in the clang headers),
# but do not change sysroot so users can still link against system libs
echo -n " -DLEANC_INTERNAL_FLAGS='--sysroot ROOT -nostdinc -isystem ROOT/include/clang' -DLEANC_CC=ROOT/bin/clang"
# ld.so is usually included by the libc.so linker script but we discard those
echo -n " -DLEANC_INTERNAL_LINKER_FLAGS='--sysroot ROOT -L ROOT/lib -L ROOT/lib/glibc ROOT/lib/glibc/libc_nonshared.a ROOT/lib/glibc/libpthread_nonshared.a -Wl,--as-needed -Wl,-Bstatic -lgmp -lunwind -luv -Wl,-Bdynamic ROOT/lib/glibc/ld.so -Wl,--no-as-needed -fuse-ld=lld'"
# ld.so is usually included by the libc.so linker script but we discard those. Make sure it is linked to only after `libc.so` like in the original
# linker script so that no libc symbols are bound to it instead.
echo -n " -DLEANC_INTERNAL_LINKER_FLAGS='--sysroot ROOT -L ROOT/lib -L ROOT/lib/glibc -lc -lc_nonshared -Wl,--as-needed -l:ld.so -Wl,--no-as-needed -lpthread_nonshared -Wl,--as-needed -Wl,-Bstatic -lgmp -lunwind -luv -Wl,-Bdynamic -Wl,--no-as-needed -fuse-ld=lld'"
# when not using the above flags, link GMP dynamically/as usual
echo -n " -DLEAN_EXTRA_LINKER_FLAGS='-Wl,--as-needed -lgmp -luv -lpthread -ldl -lrt -Wl,--no-as-needed'"
# do not set `LEAN_CC` for tests