Unfortunately -frecord-gcc-switches cannot serve our purpose because the recorded switches are mergable, i.e. the linker will merge all options to a set of strings. However, object files may have distinct compile options. We want to preserve every object file's compile options when doing LIPO build.
Thanks, Dehao On Sat, Oct 8, 2011 at 7:41 PM, Jakub Jelinek <ja...@redhat.com> wrote: > On Sat, Oct 08, 2011 at 06:43:47PM +0800, Dehao Chen wrote: >> This patch records the compiler command-line flags to a .note section, >> which could be used by FDO/LIPO. >> >> Bootstrapped on x86_64, no regressions. >> >> Is it ok for google/gcc-4_6 and google/main branches? > > Why yet another record switches option? Isn't -grecord-gcc-switches > good enough for you (or -frecord-gcc-switches)? > > Jakub >
