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Re: -march=native
On Mon, Feb 06, 2017 at 11:40:14AM +0100, Thomas Klausner wrote:
> Why doesn't NetBSD's gcc support -march=native?
>
> "error: bad value (native) for -march= switch"
Works with pkgsrc GCC. I think this mgiht be the responsible
logic:
external/gpl3/gcc/dist/gcc/config.host
101 case ${host} in
...
118 i[34567]86-*-* \
119 | x86_64-*-* )
120 case ${target} in
121 i[34567]86-*-* \
122 | x86_64-*-* )
123 host_extra_gcc_objs="driver-i386.o"
124 host_xmake_file="${host_xmake_file} i386/x-i386"
I think I need mknative for this change to take effect,
but maybe it should be case ${target} (we're cross compiling)?
Also why we need this workaround:
external/gpl3/gcc/dist/gcc/config/arm/arm.h:
2412 #if defined(__arm__) && defined(__linux__)
2413 extern const char *host_detect_local_cpu (int argc, const char **argv);
(original is 'if defined(__arm__)')
right above here, in the same file:
101 case ${host} in
102 arm*-*-freebsd* | arm*-*-linux*)
103 case ${target} in
104 arm*-*-*)
105 host_extra_gcc_objs="driver-arm.o"
106 host_xmake_file="${host_xmake_file} arm/x-arm"
However I think I need a mknative run to change this?
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