freebsd-skq/share/mk/bsd.sys.mk
des be4056d8d7 Reintroduce CSTD, which allows a Makefile to specify the precise dialect
of C in which the program or library is written.

Note that this is *not* intended to be used across the whole tree.  It
is intended to be used for individual libraries or programs which use
specific language features which the compiler must know about in order
to produce correct warnings at high WARNS levels.

MFC after:	1 month
2006-08-11 17:28:59 +00:00

72 lines
1.9 KiB
Makefile

# $FreeBSD$
#
# This file contains common settings used for building FreeBSD
# sources.
# Enable various levels of compiler warning checks. These may be
# overridden (e.g. if using a non-gcc compiler) by defining NO_WARNS.
# for GCC: http://gcc.gnu.org/onlinedocs/gcc-3.0.4/gcc_3.html#IDX143
.if !defined(NO_WARNS) && ${CC} != "icc"
. if defined(CSTD)
. if ${CSTD} == "k&r"
CFLAGS += -traditional
. elif ${CSTD} == "c89" || ${CSTD} == "c90"
CFLAGS += -std=iso9899:1990
. elif ${CSTD} == "c94" || ${CSTD} == "c95"
CFLAGS += -std=iso9899:199409
. elif ${CSTD} == "c99"
CFLAGS += -std=iso9899:1999
. else
CFLAGS += -std=${CSTD}
. endif
# -pedantic is problematic because it also imposes namespace restrictions
#CFLAGS += -pedantic
. endif
. if defined(WARNS)
. if ${WARNS} >= 1
CWARNFLAGS += -Wsystem-headers
. if !defined(NO_WERROR)
CWARNFLAGS += -Werror
. endif
. endif
. if ${WARNS} >= 2
CWARNFLAGS += -Wall -Wno-format-y2k
. endif
. if ${WARNS} >= 3
CWARNFLAGS += -W -Wno-unused-parameter -Wstrict-prototypes\
-Wmissing-prototypes -Wpointer-arith
. endif
. if ${WARNS} >= 4
CWARNFLAGS += -Wreturn-type -Wcast-qual -Wwrite-strings -Wswitch\
-Wshadow -Wcast-align -Wunused-parameter
. endif
# BDECFLAGS
. if ${WARNS} >= 6
CWARNFLAGS += -Wchar-subscripts -Winline -Wnested-externs -Wredundant-decls
. endif
. if ${WARNS} >= 2 && ${WARNS} <= 4
# XXX Delete -Wuninitialized by default for now -- the compiler doesn't
# XXX always get it right.
CWARNFLAGS += -Wno-uninitialized
. endif
. endif
. if defined(FORMAT_AUDIT)
WFORMAT = 1
. endif
. if defined(WFORMAT)
. if ${WFORMAT} > 0
#CWARNFLAGS += -Wformat-nonliteral -Wformat-security -Wno-format-extra-args
CWARNFLAGS += -Wformat=2 -Wno-format-extra-args
. if !defined(NO_WERROR)
CWARNFLAGS += -Werror
. endif
. endif
. endif
.endif
# Allow user-specified additional warning flags
CFLAGS += ${CWARNFLAGS}