This happens when trying to compile strigi 0.3.2
(http://www.vandenoever.info/software/strigi/) with gcc trunk from today
results in
Linking CXX executable dummyindexer
CMakeFiles/dummyindexer.dir/dummyindexer.o: In function `__exchange_and_add':
/usr/lib/gcc/i586-pc-linux-gnu/4.2.0/../../../../include/c++/4.2.0/bits/atomicity.h:47:
undefined reference to `__sync_fetch_and_add_4'
/usr/lib/gcc/i586-pc-linux-gnu/4.2.0/../../../../include/c++/4.2.0/bits/atomicity.h:47:
undefined reference to `__sync_fetch_and_add_4'
CMakeFiles/dummyindexer.dir/dummyindexer.o: In function `__exchange_and_add':
/usr/lib/gcc/i586-pc-linux-gnu/4.2.0/../../../../include/c++/4.2.0/bits/stl_vector.h:120:
undefined reference to `__sync_fetch_and_add_4'
CMakeFiles/dummyindexer.dir/dummyindexer.o: In function `__exchange_and_add':
/usr/lib/gcc/i586-pc-linux-gnu/4.2.0/../../../../include/c++/4.2.0/bits/atomicity.h:47:
undefined reference to `__sync_fetch_and_add_4'
/usr/lib/gcc/i586-pc-linux-gnu/4.2.0/../../../../include/c++/4.2.0/bits/atomicity.h:47:
undefined reference to `__sync_fetch_and_add_4'
CMakeFiles/dummyindexer.dir/indexer.o:/usr/lib/gcc/i586-pc-linux-gnu/4.2.0/../../../../include/c++/4.2.0/bits/atomicity.h:47:
more undefined references to `__sync_fetch_and_add_4' follow
collect2: ld returned 1 exit status
--
Summary: [4.2 regression] undefined reference to
`__sync_fetch_and_add_4'
Product: gcc
Version: 4.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libstdc++
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: bero at arklinux dot org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28671
