Aaron Lewis wrote:
[r...@meilk /usr/src/sys/i386/compile/AARON]# make
CC='cc' make -f ../../../dev/aic7xxx/aicasm/Makefile
MAKESRCPATH=../../../dev/aic7xxx/aicasm
Warning: Object directory not changed from original
/usr/src/sys/i386/compile/AARON
cc -O2 -pipe -march=i686 -ffast-math -mfpmath=sse -O3
[ ... ]
cc1: warnings being treated as errors
../../../dev/aic7xxx/aicasm/aicasm.c:1: warning: SSE instruction set
disabled, using 387 arithmetics
*** Error code 1
It's interesting something can work with SSE instruction , while some
are not , Warnings are treated as errors , if we can safely disable it in some
specific occasions.
Dude, the FreeBSD kernel doesn't use floating point, MMX, or SSE. See
sys/conf/kern.mk:
# [ ... ] Explicitly prohibit the use of SSE and other SIMD
# operations inside the kernel itself. These operations are exclusively
# reserved for user applications.
#
.if ${MACHINE_ARCH} == "i386" && ${CC} != "icc"
CFLAGS+= -mno-align-long-strings -mpreferred-stack-boundary=2 \
-mno-mmx -mno-3dnow -mno-sse -mno-sse2
INLINE_LIMIT?= 8000
.endif
Trying to override the default compiler flags to force it to use SSE is simply
not going to work.
--
-Chuck
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