libxkbcommon version-script detection
- Reply: Dimitry Andric : "Re: libxkbcommon version-script detection"
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Date: Fri, 10 Jan 2025 09:22:31 UTC
Hi,
I have recompiled x11/libxkbcommon and it fails to detect if the compiler/linker supports versioned symbols. As a result other code expecting the versioned symbol to exist, fail to link.
C compiler for the host machine: cc (clang 19.1.5 "FreeBSD clang version 19.1.5 (https://github.com/llvm/llvm-project.git llvmorg-19.1.5-0-gab4b5a2db582)")
C linker for the host machine: cc ld.lld 19.1.5
Below the meson.build check. If I force have_version_script to true, the versioned symbols are created and other code links fine.
# Supports -Wl,--version-script?
have_version_script = cc.links(
'int main(){}',
args: '-Wl,--undefined-version,--version-script=' + meson.current_source_dir()/'xkbcommon.map',
name: '-Wl,--version-script',
)
Below the output for the test.
Checking if "-Wl,--version-script" : links: NO
If I create test.c with content "int main(){}” and compile it manually with the same flags AFAIK, it compiles ok. No errors.
However when I capture "make configure" with ktrace, it fails with the error below.
ld: error: non-exported symbol 'environ' in '/usr/lib/crt1.o' is referenced by DSO '/lib/libc.so.7'
ld: error: non-exported symbol '__progname' in '/usr/lib/crt1.o' is referenced by DSO '/lib/libc.so.7'
cc: error: linker command failed with exit code 1 (use -v to see invocation)
What flags need to be added in meson.build to allow it to work?
BTW This is on recent stable, but I suspect it fails the same way on current which I do not run at the moment.
Peter