On 10/30/2010 06:01 AM, Richard W.M. Jones wrote: > On Sat, Oct 30, 2010 at 02:24:02AM -0400, Jon Stanley wrote: >> I noticed on my Fedora 13 box that in the RPM macro %__global_cflags >> that -frecord-gcc-switches is missing, which is a nifty compiler >> feature that will record the flags passed to gcc in a section in the >> object file, thus aiding in the "how in the world was this compiled?" >> problem. An example: >> >> [jstanley@hawtness ~]$ gcc -O2 -frecord-gcc-switches -g -o hello hello.c >> [jstanley@hawtness ~]$ readelf -p .GCC.command.line hello >> >> String dump of section '.GCC.command.line': >> [ 0] hello.c >> [ 8] -mtune=generic >> [ 17] -g >> [ 1a] -O2 >> [ 1e] -frecord-gcc-switches >> >> What do folks think about adding this as a default? Any reason not to >> (other than possibly a few bytes extra in the object files)? > > +1 > > I think would also catch those cases where some gcc flag is found to > break code generation. You reasonably see which binaries were > affected. I agree. Unless there is a notable performance cost in this, I say we should go for it. ~spot -- devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxxx https://admin.fedoraproject.org/mailman/listinfo/devel
