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| author | Nick Alcock <nick.alcock@oracle.com> | 2021-03-25 16:32:46 +0000 |
|---|---|---|
| committer | Nick Alcock <nick.alcock@oracle.com> | 2021-03-25 16:32:51 +0000 |
| commit | 8f7b22ea2a95ccab6aeaddcdee7472dbdbcfb4d3 (patch) | |
| tree | 99146cfc862fde4ea37024b82f971122e860414b /gdbsupport/btrace-common.cc | |
| parent | 15131809c235047c94387ef9aff207117191ed0b (diff) | |
| download | gdb-8f7b22ea2a95ccab6aeaddcdee7472dbdbcfb4d3.zip gdb-8f7b22ea2a95ccab6aeaddcdee7472dbdbcfb4d3.tar.gz gdb-8f7b22ea2a95ccab6aeaddcdee7472dbdbcfb4d3.tar.bz2 | |
libctf: fix ELF-in-BFD checks in the presence of ASAN
The address sanitizer contains a redirector that captures dlopen calls,
so checks for dlopen with AC_SEARCH_LIBS will always conclude that
dlopen is present when the sanitizer is on. This means it won't add
-ldl to LIBS even if needed, and the immediately-following attempt to
actually link with -lbfd will fail because libbfd also needs dlsym,
which ASAN does *not* contain a redirector for.
If we check for dlsym instead of dlopen, the check works whether ASAN is
on or off. (bfd uses both in close proximity: if it needs one, it will
always need the other.)
libctf/ChangeLog
2021-03-25 Nick Alcock <nick.alcock@oracle.com>
* configure.ac: Check for dlsym, not dlopen.
* configure: Regenerate.
Diffstat (limited to 'gdbsupport/btrace-common.cc')
0 files changed, 0 insertions, 0 deletions