[Bug 1051881] New: clang can't find libc.so with -m32
http://bugzilla.opensuse.org/show_bug.cgi?id=1051881 Bug ID: 1051881 Summary: clang can't find libc.so with -m32 Classification: openSUSE Product: openSUSE Tumbleweed Version: Current Hardware: Other OS: Other Status: NEW Severity: Normal Priority: P5 - None Component: Basesystem Assignee: bnc-team-screening@forge.provo.novell.com Reporter: martin.liska@suse.com QA Contact: qa-bugs@suse.de Found By: --- Blocker: --- Running: $ clang --version clang version 4.0.1 (tags/RELEASE_401/final 305264) $ cat a.c int main() {} $ clang -m32 a.c /usr/bin/ld: skipping incompatible /usr/bin/../lib64/gcc/x86_64-suse-linux/7/../../../libc.so when searching for -lc /lib/libc.so.6: error adding symbols: File format not recognized clang-4.0.1: error: linker command failed with exit code 1 (use -v to see invocation) I've noticed we have openSUSE specific patches: https://build.opensuse.org/package/view_file/openSUSE:Factory/llvm4/clang-re... https://build.opensuse.org/package/view_file/openSUSE:Factory/llvm4/assume-o... But it does not work properly with -m32. Note the code in DetectDistro.cpp checks for /etc/SuSE-release, which is legacy. One should use /etc/os-release. I can fix that after we resolve this issue. Thanks, Martin -- You are receiving this mail because: You are on the CC list for the bug.
http://bugzilla.opensuse.org/show_bug.cgi?id=1051881 Martin Liška <martin.liska@suse.com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |idonmez@suse.com, | |msrb@suse.com -- You are receiving this mail because: You are on the CC list for the bug.
http://bugzilla.opensuse.org/show_bug.cgi?id=1051881 Ismail Donmez <idonmez@suse.com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC|msrb@suse.com | Assignee|bnc-team-screening@forge.pr |msrb@suse.com |ovo.novell.com | -- You are receiving this mail because: You are on the CC list for the bug.
http://bugzilla.opensuse.org/show_bug.cgi?id=1051881 http://bugzilla.opensuse.org/show_bug.cgi?id=1051881#c1 --- Comment #1 from Martin Liška <martin.liska@suse.com> --- Note that I've got installed glibc-32bit package. I also tested Fedora 25 and one needs to install their glibc-devel.x86_64 to have it working. -- You are receiving this mail because: You are on the CC list for the bug.
http://bugzilla.opensuse.org/show_bug.cgi?id=1051881 http://bugzilla.opensuse.org/show_bug.cgi?id=1051881#c2 --- Comment #2 from Martin Liška <martin.liska@suse.com> --- Last observation is that gcc -m32 uses following 2 packages to get crt*.o and libm.so: # rpm -qf /usr/lib/crtn.o glibc-devel-32bit-2.25-2.5.x86_64 # rpm -qf /lib/libm-2.25.so glibc-32bit-2.25-2.5.x86_64 -- You are receiving this mail because: You are on the CC list for the bug.
http://bugzilla.opensuse.org/show_bug.cgi?id=1051881 http://bugzilla.opensuse.org/show_bug.cgi?id=1051881#c3 --- Comment #3 from Martin Liška <martin.liska@suse.com> --- Ping. -- You are receiving this mail because: You are on the CC list for the bug.
http://bugzilla.opensuse.org/show_bug.cgi?id=1051881 http://bugzilla.opensuse.org/show_bug.cgi?id=1051881#c4 Michal Srb <msrb@suse.com> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |IN_PROGRESS --- Comment #4 from Michal Srb <msrb@suse.com> --- Sorry, I was busy with other llvm issues, now I finally have time to dig into this one. (In reply to Martin Liška from comment #0)
But it does not work properly with -m32. Note the code in DetectDistro.cpp checks for /etc/SuSE-release, which is legacy. One should use /etc/os-release. I can fix that after we resolve this issue.
So far I don't think the issue comes from here. The whole DetectDistro function is removed and Distro::OpenSUSE is returned unconditionally. The "/etc/SuSE-release" file is not even read. It seems that clang correctly discovers that the 32bit gcc is in "/usr/lib64/gcc/x86_64-suse-linux/7/32". It links with some files from that directory (for example crtcend.o or libgcc_s.so), which is correct. However, it fails to detect the right place for glibc files. It discovers them in "/usr/bin/../lib64/gcc/x86_64-suse-linux/7/../../.." = "/usr/lib64" directory. It seems that clang does not expect the 32bit gcc to be under the /usr/lib64 directory. We will probably need special case for finding the glibc. -- You are receiving this mail because: You are on the CC list for the bug.
http://bugzilla.opensuse.org/show_bug.cgi?id=1051881 http://bugzilla.opensuse.org/show_bug.cgi?id=1051881#c6 Martin Li��ka <martin.liska@suse.com> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|IN_PROGRESS |RESOLVED Resolution|--- |FIXED --- Comment #6 from Martin Li��ka <martin.liska@suse.com> --- It seems it works fine now. -- You are receiving this mail because: You are on the CC list for the bug.
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