Comments? (yes, I know -fformat-extensions have just been added...)
diff -r ea5e09d013e7 sys/conf/kern.mk
--- a/sys/conf/kern.mk Thu Jun 10 07:40:51 2010 -0700
+++ b/sys/conf/kern.mk Thu Jun 10 11:35:50 2010 -0700
@@ -9,6 +9,10 @@
.if ${CC} == "icc"
#CWARNFLAGS= -w2 # use this if you are terribly bored
CWARNFLAGS=
+.elif ${CC} == "clang"
+CWARNFLAGS?= -Wall -Wredundant-decls -Wnested-externs -Wstrict-prototypes \
+ -Wmissing-prototypes -Wpointer-arith -Winline -Wcast-qual \
+ -Wundef -Wno-pointer-sign
.else
CWARNFLAGS?= -Wall -Wredundant-decls -Wnested-externs -Wstrict-prototypes \
-Wmissing-prototypes -Wpointer-arith -Winline -Wcast-qual \
@@ -63,9 +67,15 @@
# reserved for user applications.
#
.if ${MACHINE_ARCH} == "amd64"
+.if ${CC} == "clang"
+CFLAGS+= -mcmodel=kernel -mno-red-zone \
+ -mno-sse -mno-sse2 -mno-sse3 -mno-mmx -mno-3dnow \
+ -msoft-float -fno-asynchronous-unwind-tables
+.else
CFLAGS+= -mcmodel=kernel -mno-red-zone \
-mfpmath=387 -mno-sse -mno-sse2 -mno-sse3 -mno-mmx -mno-3dnow \
-msoft-float -fno-asynchronous-unwind-tables
+.endif
INLINE_LIMIT?= 8000
.endif
diff -r ea5e09d013e7 sys/conf/kern.pre.mk
--- a/sys/conf/kern.pre.mk Thu Jun 10 07:40:51 2010 -0700
+++ b/sys/conf/kern.pre.mk Thu Jun 10 11:35:50 2010 -0700
@@ -30,7 +30,11 @@
_MINUS_O= -O2
. endif
. if ${MACHINE_ARCH} == "amd64"
+. if ${CC} == "clang"
+COPTFLAGS?=-O2 -pipe
+. else
COPTFLAGS?=-O2 -frename-registers -pipe
+. endif
. else
COPTFLAGS?=${_MINUS_O} -pipe
. endif
@@ -89,7 +93,7 @@
CFLAGS= ${COPTFLAGS} ${C_DIALECT} ${DEBUG} ${CWARNFLAGS}
CFLAGS+= ${INCLUDES} -D_KERNEL -DHAVE_KERNEL_OPTION_HEADERS -include
opt_global.h
-.if ${CC} != "icc"
+.if ${CC} != "icc" && ${CC} != "clang"
CFLAGS+= -fno-common -finline-limit=${INLINE_LIMIT}
CFLAGS+= --param inline-unit-growth=100
CFLAGS+= --param large-function-growth=1000
diff -r ea5e09d013e7 sys/conf/kmod.mk
--- a/sys/conf/kmod.mk Thu Jun 10 07:40:51 2010 -0700
+++ b/sys/conf/kmod.mk Thu Jun 10 11:35:50 2010 -0700
@@ -111,7 +111,7 @@
# for example.
CFLAGS+= -I@/contrib/altq
-.if ${CC} != "icc"
+.if ${CC} != "icc" && ${CC} != "clang"
CFLAGS+= -finline-limit=${INLINE_LIMIT}
CFLAGS+= --param inline-unit-growth=100
CFLAGS+= --param large-function-growth=1000
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