• H. Peter Anvin's avatar
    x86, build: Pass in additional -mno-mmx, -mno-sse options · 8b3b005d
    H. Peter Anvin authored
    In checkin
    
        5551a34e x86-64, build: Always pass in -mno-sse
    
    we unconditionally added -mno-sse to the main build, to keep newer
    compilers from generating SSE instructions from autovectorization.
    However, this did not extend to the special environments
    (arch/x86/boot, arch/x86/boot/compressed, and arch/x86/realmode/rm).
    Add -mno-sse to the compiler command line for these environments, and
    add -mno-mmx to all the environments as well, as we don't want a
    compiler to generate MMX code either.
    
    This patch also removes a $(cc-option) call for -m32, since we have
    long since stopped supporting compilers too old for the -m32 option,
    and in fact hardcode it in other places in the Makefiles.
    Reported-by: default avatarKevin B. Smith <kevin.b.smith@intel.com>
    Cc: Sunil K. Pandey <sunil.k.pandey@intel.com>
    Signed-off-by: default avatarH. Peter Anvin <hpa@linux.intel.com>
    Cc: H. J. Lu <hjl.tools@gmail.com>
    Link: http://lkml.kernel.org/n/tip-j21wzqv790q834n7yc6g80j1@git.kernel.org
    Cc: <stable@vger.kernel.org> # build fix only
    8b3b005d
Makefile 2.63 KB