http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55925
Bug #: 55925
Summary: Unrecognized command line option '-mfxsr' when
building x86_64-w64-mingw32 native compiler
Classification: Unclassified
Product: gcc
Version: 4.8.0
Status: UNCONFIRMED
Severity: major
Priority: P3
Component: other
AssignedTo: [email protected]
ReportedBy: [email protected]
When building a native x86_64-w64-mingw32 compiler using a 4.7.2 cross
compiler, I get the following:
x86_64-w64-mingw32-gcc -L/root/win64-build/native/x86_64-w64-mingw32/lib
-L/root/win64-build/native/mingw/lib -isystem
/root/win64-build/native/x86_64-w64-mingw32/include -isystem
/root/win64-build/native/mingw/include -g -O2 -O2 -g -O2 -DIN_GCC -W
-Wall -Wno-narrowing -Wwrite-strings -Wcast-qual -Wstrict-prototypes
-Wmissing-prototypes -Wold-style-definition -isystem ./include -g
-DIN_LIBGCC2 -fbuilding-libgcc -fno-stack-protector -I. -I. -I../.././gcc
-I../../../gcc-4.8.0/libgcc -I../../../gcc-4.8.0/libgcc/.
-I../../../gcc-4.8.0/libgcc/../gcc -I../../../gcc-4.8.0/libgcc/../include
-I../../../gcc-4.8.0/libgcc/config/libbid -DENABLE_DECIMAL_BID_FORMAT
-DHAVE_CC_TLS -DUSE_EMUTLS -o crtfastmath.o -MT crtfastmath.o -MD -MP -MF
crtfastmath.dep -mfxsr -msse -c
../../../gcc-4.8.0/libgcc/config/i386/crtfastmath.c
x86_64-w64-mingw32-gcc: error: unrecognized command line option '-mfxsr'
make[2]: *** [crtfastmath.o] Error 1
make[2]: Leaving directory
`/root/win64-build/src/gcc-build/x86_64-w64-mingw32/libgcc'
make[1]: *** [all-target-libgcc] Error 2
make[1]: Leaving directory `/root/win64-build/src/gcc-build'
make: *** [all] Error 2
I can't find any documentation at all on this '-mfxsr' option. What is it, and
why is it being used here?
