gcc build with -O0 results in corrupted -debuginfo package

Reindl Harald h.reindl at thelounge.net
Fri Apr 25 14:28:01 UTC 2014


Am 25.04.2014 16:10, schrieb Petr Spacek:
> I'm trying to rebuild bind-9.9.4-12.P2.fc20.src.rpm with
> CFLAGS="$CFLAGS $RPM_OPT_FLAGS -O0 -ggdb".
> 
> I did the simplest possible thing - edited the original spec file (see spec.diff) and built the package:
> $ rpmbuild -ba bind.spec
> 
> The package builds and BIND itself seems to work. The problem is that new debuginfo package is missing 118 out of
> 283 header files in /usr/src/debug/bind-9.9.4-P2.
> 
> It seems that "-O0" alone (instead of "-O0 -ggdb") causes the same problem.
> 
> I would be glad if anyone can give me advice how to debug this.
> 
> Original packages from Fedora 20 (with all headers in /usr/src/debug):
> http://koji.fedoraproject.org/koji/buildinfo?buildID=502596
> 
> Packages built with -O0 -ggdb (scratch build):
> http://koji.fedoraproject.org/koji/taskinfo?taskID=6778483

just don't do that and read compiler warnings
the debuginfo package is your smallest problem
you just kill security features like D_FORTIFY_SOURCE with -O0

warning: #warning _FORTIFY_SOURCE requires compiling with optimization (-O) [-Wcpp]


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