1# $FreeBSD: src/sys/conf/kern.mk,v 1.52 2007/05/24 21:53:42 obrien Exp $ 2 3# 4# Warning flags for compiling the kernel and components of the kernel. 5# 6# For x86_64, we explicitly prohibit the use of FPU, SSE and other SIMD 7# operations inside the kernel itself. These operations are exclusively 8# reserved for user applications. 9# 10CFLAGS+= -fno-stack-protector 11CFLAGS+= -mcmodel=kernel -mno-red-zone -mfpmath=387 12 13CFLAGS+= -mno-mmx -mno-3dnow -mno-sse -mno-sse2 -mno-sse3 14 15.if ${CCVER:Mgcc*} 16CFLAGS+= -mpreferred-stack-boundary=4 17CFLAGS+= -mno-ssse3 -mno-sse4.1 -mno-sse4.2 -mno-sse4 -mno-sse4a \ 18 -mno-sse5 19CFLAGS+= -mno-abm -mno-aes -mno-avx -mno-pclmul -mno-popcnt 20 21.if ${CCVER} == "gcc47" 22CFLAGS+= -mno-avx2 -mno-fsgsbase -mno-rdrnd -mno-f16c 23CFLAGS+= -mno-fma -mno-fma4 24CFLAGS+= -mno-bmi -mno-bmi2 25CFLAGS+= -mno-xop -mno-lwp -mno-lzcnt -mno-tbm 26.endif 27.endif 28 29CFLAGS+= -msoft-float 30CFLAGS+= -fno-asynchronous-unwind-tables -fno-omit-frame-pointer 31 32INLINE_LIMIT?= 8000 33