For example, `gcc -march=pentium -flto -fuse-linker-plugin main.c' causes this:
/usr/local/libexec/gcc/i686-pc-linux-gnu/4.5.0/lto1 -quiet -dumpbase cc0AFVJ9 -mtune=generic -march=pentium4 -auxbase-strip /tmp/cc7X43Dc.lto.o -fuse-linker-plugin -fresolution @/tmp/ccoGGiIc -o /tmp/ccCcL0Ff.s "-mtune=generic -march=pentium4" appears because GCC (4.5.0 20091224) was configured with "--with-arch=pentium4 --with-tune=generic" options. -- Summary: lto1 does not see -march and -mtune options Product: gcc Version: 4.5.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: driver AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: d dot g dot gorbachev at gmail dot com GCC build triplet: i686-pc-linux-gnu GCC host triplet: i686-pc-linux-gnu GCC target triplet: i686-pc-linux-gnu http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42520