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glibc: copy libgcc_s.so from .lib output if it exists

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Otherwise copy it from the default output. The difference is visible
when we build `glibc` with:

- `bootstrapTools` `gcc`: ${stdenv.cc.cc.out}/lib/libgcc_s.so.1 is used
- `nixpkgs` `gcc`: ${stdenv.cc.cc.lib}/lib/libgcc_s.so.1 is used

Noticed when experimented with multiple `gcc` rebuilds in bootstrap.

While at it killing `RUNPATH` reference to bootstrap `glibc`.
This commit is contained in:
Sergei Trofimovich 2023-01-04 14:14:54 +00:00
parent 77bded303a
commit 76f5618e1e
1 changed files with 8 additions and 3 deletions
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11
pkgs/development/libraries/glibc/default.nix
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@ -76,11 +76,16 @@ in
# - clang-wrapper in cross-compilation
# Last attempt: https://github.com/NixOS/nixpkgs/pull/36948
preInstall = lib.optionalString (stdenv.hostPlatform == stdenv.buildPlatform) ''
if [ -f ${stdenv.cc.cc}/lib/libgcc_s.so.1 ]; then
if [ -f ${lib.getLib stdenv.cc.cc}/lib/libgcc_s.so.1 ]; then
mkdir -p $out/lib
cp ${stdenv.cc.cc}/lib/libgcc_s.so.1 $out/lib/libgcc_s.so.1
cp ${lib.getLib stdenv.cc.cc}/lib/libgcc_s.so.1 $out/lib/libgcc_s.so.1
# the .so It used to be a symlink, but now it is a script
cp -a ${stdenv.cc.cc}/lib/libgcc_s.so $out/lib/libgcc_s.so
cp -a ${lib.getLib stdenv.cc.cc}/lib/libgcc_s.so $out/lib/libgcc_s.so
# wipe out reference to previous libc it was built against
chmod +w $out/lib/libgcc_s.so.1
# rely on default RUNPATHs of the binary and other libraries
# Do no force-pull wrong glibc.
patchelf --remove-rpath $out/lib/libgcc_s.so.1
fi
'';