Test works ok when using clang18 from ports
> On 10 Jan 2025, at 11:19, Dimitry Andric <d...@freebsd.org> wrote:
>
> On 10 Jan 2025, at 10:22, Peter Blok <pb...@bsd4all.org> wrote:
>>
>> 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.
>
> It works just fine on -CURRENT:
>
> ...
> Checking if "-Wl,--version-script" : links: YES
>
> Not sure what is going wrong in your environment. Is this stable/14?
>
> -Dimitry
>
