[Clang][test] Limit library search when linking shared lib

[apolloww]

Don't search for unnecessary libs when linking the shared lib. This allows the test to run in chroot environment.

[llvmbot]

@llvm/pr-subscribers-clang

Author: Wei Wang (apolloww)

Changes

Don't search for unnecessary libs when linking the shared lib. This allows the test to run in chroot environment.

---

Full diff: https://github.com/llvm/llvm-project/pull/80253.diff

1 Files Affected:

• (modified) clang/test/Interpreter/cxx20-modules.cppm (+1-1)

diff --git a/clang/test/Interpreter/cxx20-modules.cppm b/clang/test/Interpreter/cxx20-modules.cppm
index 239968d8c7445..4e56e2fc1528a 100644
--- a/clang/test/Interpreter/cxx20-modules.cppm
+++ b/clang/test/Interpreter/cxx20-modules.cppm
@@ -8,7 +8,7 @@
 // RUN: %clang -std=c++20 %t/mod.cppm --precompile \
 // RUN:     -o %t/mod.pcm --target=x86_64-linux-gnu
 // RUN: %clang -fPIC %t/mod.pcm -c -o %t/mod.o --target=x86_64-linux-gnu
-// RUN: %clang -fPIC -shared %t/mod.o -o %t/libmod.so --target=x86_64-linux-gnu
+// RUN: %clang -nostdlib -fPIC -shared %t/mod.o -o %t/libmod.so --target=x86_64-linux-gnu
 //
 // RUN: cat %t/import.cpp | env LD_LIBRARY_PATH=%t:$LD_LIBRARY_PATH \
 // RUN:     clang-repl -Xcc=-std=c++20 -Xcc=-fmodule-file=M=%t/mod.pcm \

[apolloww]

Our internal builds run in chroot and the test fails with the following error

/bin/ld: cannot find crti.o: No such file or directory
/bin/ld: cannot find crtbeginS.o: No such file or directory
/bin/ld: cannot find -lgcc
/bin/ld: cannot find -lgcc_s
/bin/ld: cannot find -lc
/bin/ld: cannot find -lgcc
/bin/ld: cannot find -lgcc_s
/bin/ld: cannot find crtendS.o: No such file or directory
/bin/ld: cannot find crtn.o: No such file or directory

[ChuanqiXu9]

LGTM. Thanks.