[New-bugs-announce] [issue39398] AMD64 Fedora Rawhide Clang 3.x: C compiler cannot create executables

[STINNER Victor]

New submission from STINNER Victor <vstinner at python.org>:

"AMD64 Fedora Rawhide Clang 3.x" buildbot worker is currently broken:
https://buildbot.python.org/all/#/builders/169/builds/168

clang cannot build (statically linked) binary using UBSan:

$ ./configure --prefix '$(PWD)/target' CC=clang LD=clang CFLAGS=-fsanitize=undefined LDFLAGS=-fsanitize=undefined
...
checking for gcc... clang
checking whether the C compiler works... no
configure: error: in `/home/buildbot/buildarea/3.x.cstratak-fedora-rawhide-x86_64.clang-ubsan/build':
configure: error: C compiler cannot create executables
See `config.log' for more details

I reproduced the issue on the worker. The issue comes from a version conflict between clang and compiler-rt packages:

compiler-rt-9.0.0-1.fc32.x86_64 uses /usr/lib64/clang/9.0.0/...

vs

clang-9.0.1-2.fc32.x86_64 uses /usr/lib64/clang/9.0.1/...

Charalampos created https://src.fedoraproject.org/rpms/compiler-rt/pull-request/10 to propose to update compiler-rt.

----------
components: Tests
keywords: buildbot
messages: 360324
nosy: vstinner
priority: normal
severity: normal
status: open
title: AMD64 Fedora Rawhide Clang 3.x: C compiler cannot create executables
versions: Python 3.9

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue39398>
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