https://gcc.gnu.org/bugzilla/show_bug.cgi?id=47785
H.J. Lu <hjl.tools at gmail dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- Summary|GCC with -flto does not |GCC with -flto does not |pass -Wa options to the |pass -Wa/-Xassembler |assembler |options to the assembler --- Comment #15 from H.J. Lu <hjl.tools at gmail dot com> --- We need to also handle -Xassembler? Since -Wa, doesn't work with comma in assembler options, like -mfoo=foo1,foo2, one needs to use -Xassembler -mfoo=foo1,foo2 to pass -mfoo=foo1,foo2 to assembler.