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| author | Michal Schmidt <mschmidt@redhat.com> | 2015-10-13 16:52:53 +0200 |
|---|---|---|
| committer | Michal Schmidt <mschmidt@redhat.com> | 2015-10-14 14:43:38 +0200 |
| commit | 7f7bfcf3cfc6f0d9fabffb63a44b607a7a040d57 (patch) | |
| tree | 4861a8bdac0d32edc67b570e355f907bf1a8b19f /docs | |
| parent | c7e2496a2194557c8c52317209d1020dee845117 (diff) | |
build: fix overlinking to libdw
We have two AC_CHECK_LIB checks for libdw. The first one has an empty
action-if-found, so it defaults to adding "-ldw" to LIBS. LIBS are
applied to everything we build. But only systemd-coredump needs libdw.
It already links to ELFUTILS_LIBS correctly in Makefile.am.
Drop the first AC_CHECK_LIB check. The second check is sufficient.
Q: Don't we already use "-Wl,--as-needed" to eliminate overlinking?
A: We do, but it is effective only for executables, not for shared
libraries. This is due to a libtool bug:
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=347650
Diffstat (limited to 'docs')
0 files changed, 0 insertions, 0 deletions