On Wed, Jun 13, 2012 at 05:02:44PM +0200, Christophe Fergeau wrote: > Commit log and autoconf snippet written by Eric Blake for libvirt. > > glibc 2.15 (on Fedora 17) coupled with explicit disabling of > optimization during development dies a painful death: > > In file included from /usr/include/limits.h:27:0, > from /usr/lib/gcc/x86_64-redhat-linux/4.7.0/include/limits.h:169,. > from /usr/lib/gcc/x86_64-redhat-linux/4.7.0/include/syslimits.h:7, > from /usr/lib/gcc/x86_64-redhat-linux/4.7.0/include/limits.h:34, > from util/bitmap.c:26: > /usr/include/features.h:314:4: error: #warning _FORTIFY_SOURCE requires compiling with optimization (-O) [-Werror=cpp] > cc1: all warnings being treated as errors > > Work around this by only conditionally defining _FORTIFY_SOURCE, > in the case where glibc can actually use it. The trick is using > AH_VERBATIM instead of AC_DEFINE. > > * m4/virt-compile-warnings.m4 (LIBOSINFO_COMPILE_WARNINGS): Squelch > _FORTIFY_SOURCE when needed to avoid glibc #warnings. > --- > m4/virt-compile-warnings.m4 | 9 +++++++-- > 1 file changed, 7 insertions(+), 2 deletions(-) ACK Regards, Daniel -- |: http://berrange.com -o- http://www.flickr.com/photos/dberrange/ :| |: http://libvirt.org -o- http://virt-manager.org :| |: http://autobuild.org -o- http://search.cpan.org/~danberr/ :| |: http://entangle-photo.org -o- http://live.gnome.org/gtk-vnc :| -- libvir-list mailing list libvir-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/libvir-list