Date: Sat, 11 Dec 2010 11:47:07 +0000 From: Alexander Best <arundel@freebsd.org> To: freebsd-toolchain@freebsd.org Subject: clang and -mfpmath=387 on ARCH=amd64 Message-ID: <20101211114707.GA60390@freebsd.org>
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hi there,
clang doesn't seem to make use of -mfpmath=387 on ARCH=amd64 and complains
about it (e.g. during TARGET=buildkernel).
any thoughts about the attached patch?
cheers.
alex
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a13x
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diff --git a/sys/conf/kern.mk b/sys/conf/kern.mk
index 4d8636c..d5077ea 100644
--- a/sys/conf/kern.mk
+++ b/sys/conf/kern.mk
@@ -65,8 +65,11 @@ INLINE_LIMIT?= 15000
# reserved for user applications.
#
.if ${MACHINE_CPUARCH} == "amd64"
+.if ${CC:T:Mclang} != "clang"
+CFLAGS+= -mfpmath=387
+.endif
CFLAGS+= -mcmodel=kernel -mno-red-zone \
- -mfpmath=387 -mno-sse -mno-sse2 -mno-sse3 -mno-mmx -mno-3dnow \
+ -mno-sse -mno-sse2 -mno-sse3 -mno-mmx -mno-3dnow \
-msoft-float -fno-asynchronous-unwind-tables
INLINE_LIMIT?= 8000
.endif
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