On 05/07/2013 08:49 PM, Anatol Pomozov wrote: > Linux Arch distributive recently added following compilation flags to > CPPFLAGS: "-D_FORTIFY_SOURCE=2 -O2". Unfortunately it breaks autoconf based > projects such as gdb, gcc, ... > > The issue is that autoconf compiles some programs to find whether system > has headers. And to compile it uses only preprocessor defines from CPPFLAGS > (-D_FORTIFY_SOURCE=2 in case of Arch). recent versions of glibc produces a > warning when it compiles apps with _FORTIFY_SOURCE but without -O2. Sorry, I don't understand. If CPPFLAGS="-D_FORTIFY_SOURCE=2 -O2", and if 'configure' uses preprocessor defines from CPPFLAGS, then 'configure' should be using -D_FORTIFY_SOURCE=2 -O2. But you seem to be implying that 'configure' is using -D_FORTIFY_SOURCE=2 without -O2. How can this be? > recent versions of glibc produces a > warning when it compiles apps with _FORTIFY_SOURCE but without -O2 That's a real problem, which will break lots of things. Fix that, and your Autoconf issue will go away. _______________________________________________ Autoconf mailing list Autoconf@xxxxxxx https://lists.gnu.org/mailman/listinfo/autoconf
