Change in osmo-bsc[master]: configure.ac: fix libtool issue with clang and sanitizer

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Hoernchen gerrit-no-reply at lists.osmocom.org
Sat Apr 11 18:27:17 UTC 2020


Hello laforge, Jenkins Builder, 

I'd like you to reexamine a change. Please visit

    https://gerrit.osmocom.org/c/osmo-bsc/+/17793

to look at the new patch set (#3).

Change subject: configure.ac: fix libtool issue  with clang and sanitizer
......................................................................

configure.ac: fix libtool issue  with clang and sanitizer

As pointed out at https://github.com/libexpat/libexpat/issues/312
libtool does not play nice with clang sanitizer builds at all.
For those builds LD shoud be set to clang too (and LDFLAGS needs the
sanitizer flags as well), because the clang compiler driver knows how
linking to the sanitizer libs works, but then at a later stage libtool
fails to actually produce the shared libraries and the build fails. This
is fixed by this patch.

Addtionally LD_LIBRARY_PATH has no effect on conftest runs during
configure time, so the rpath needs to be set to the asan library path to
ensure the configure run does not fail due to a missing asan library,
i.e.:

SANS='-fsanitize=memory -fsanitize-recover=all -shared-libsan'
export CC=clang-10
ASANPATH=$(dirname `$CC -print-file-name=libclang_rt.asan-x86_64.so`)
export LDFLAGS="-Wl,-rpath,$ASANPATH $SANS $LDFLAGS"

Change-Id: If71654d87b375b4b882ab527e89353cd035f695b
---
M configure.ac
1 file changed, 5 insertions(+), 0 deletions(-)


  git pull ssh://gerrit.osmocom.org:29418/osmo-bsc refs/changes/93/17793/3
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Gerrit-Project: osmo-bsc
Gerrit-Branch: master
Gerrit-Change-Id: If71654d87b375b4b882ab527e89353cd035f695b
Gerrit-Change-Number: 17793
Gerrit-PatchSet: 3
Gerrit-Owner: Hoernchen <ewild at sysmocom.de>
Gerrit-Reviewer: Jenkins Builder
Gerrit-Reviewer: laforge <laforge at osmocom.org>
Gerrit-MessageType: newpatchset
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