sys/conf/bsd.kern.mk

   1 # $FreeBSD: src/share/mk/bsd.kern.mk,v 1.17.2.1 2001/08/01 16:56:56 obrien Exp $
   2
   3 # Warning flags for compiling the kernel and components of the kernel.
   4 #
   5 # Note that -Werror is on by default. To turn it off, e.g. when working
   6 # on adding new warning options, NO_WERROR in make.conf (or on make(1)'s
   7 # command line) should be of material assistance.
   8 #
   9
  10 CSTD?=          gnu11
  11
  12 CWARNFLAGS?=    -Wall -Wredundant-decls -Wnested-externs -Wstrict-prototypes \
  13                 -Wmissing-prototypes -Wpointer-arith -Wcast-qual \
  14                 -Wold-style-definition -Wmissing-include-dirs \
  15                 -Wno-pointer-sign -Winit-self -Wundef
  16
  17 .if ${CCVER:Mgcc*}
  18 # All flags inside this block are gcc-specific except for --param
  19 # Since inline-limit wasn't recognized, and since --param squawks on clang
  20 # when it isn't used, it was shift to GCC compilers only.
  21 CFLAGS+=        -Wold-style-declaration \
  22                 -finline-limit=${INLINE_LIMIT} \
  23                 --param inline-unit-growth=100 \
  24                 --param large-function-growth=1000
  25 .if ${CCVER:Mgcc4[789]} || ${CCVER:Mgcc[5-]*}
  26 CWARNFLAGS+=    -Wno-unused-but-set-variable
  27 .endif
  28 .endif
  29
  30
  31 # Require the proper use of 'extern' for variables.  -fno-common will
  32 # cause duplicate declarations to generate a link error.
  33 #
  34 CFLAGS+=        -fno-common
  35
  36 # Prevent GCC 3.x from making certain libc based inline optimizations
  37 #
  38 CFLAGS+=        -ffreestanding
  39
  40 .include "../platform/${MACHINE_PLATFORM}/conf/kern.mk"