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# $FreeBSD$
#
# 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
# the default is gnu99 for now
CSTD ?= gnu99
.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
.if !defined(NO_WARNS)
# -pedantic is problematic because it also imposes namespace restrictions
#CFLAGS += -pedantic
. if defined(WARNS)
. if ${WARNS} >= 1
CWARNFLAGS += -Wsystem-headers
. if !defined(NO_WERROR) && (${CC:T:Mclang} != "clang" || !defined(NO_WERROR.clang))
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 ${WARNS} >= 4
CWARNFLAGS += -Wreturn-type -Wcast-qual -Wwrite-strings -Wswitch\
-Wshadow -Wunused-parameter
. if !defined(NO_WCAST_ALIGN) && (${CC:T:Mclang} != "clang" || !defined(NO_WCAST_ALIGN.clang))
CWARNFLAGS += -Wcast-align
. endif
. endif
# BDECFLAGS
. if ${WARNS} >= 6
CWARNFLAGS += -Wchar-subscripts -Winline -Wnested-externs\
-Wredundant-decls -Wold-style-definition
. 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
CWARNFLAGS += -Wno-pointer-sign
# Clang has more warnings enabled by default, and when using -Wall, so if WARNS
# is set to low values, these have to be disabled explicitly.
. if ${CC:T:Mclang} == "clang"
. if ${WARNS} <= 3
CWARNFLAGS += -Wno-tautological-compare -Wno-unused-value\
-Wno-parentheses-equality -Wno-unused-function\
-Wno-conversion
. endif
. if ${WARNS} <= 2
CWARNFLAGS += -Wno-switch-enum -Wno-empty-body
. endif
. if ${WARNS} <= 1
CWARNFLAGS += -Wno-parentheses
. endif
. if defined(NO_WARRAY_BOUNDS)
CWARNFLAGS += -Wno-array-bounds
. endif
. endif
. endif
. if defined(FORMAT_AUDIT)
WFORMAT = 1
. endif
. if defined(WFORMAT)
. if ${WFORMAT} > 0
#CWARNFLAGS += -Wformat-nonliteral -Wformat-security -Wno-format-extra-args
CWARNFLAGS += -Wformat=2 -Wno-format-extra-args
. if !defined(NO_WERROR) && (${CC:T:Mclang} != "clang" || !defined(NO_WERROR.clang))
CWARNFLAGS += -Werror
. endif
. endif
. endif
. if defined(NO_WFORMAT) || (${CC:T:Mclang} == "clang" && defined(NO_WFORMAT.clang))
CWARNFLAGS += -Wno-format
. endif
.endif
.if defined(IGNORE_PRAGMA)
CWARNFLAGS += -Wno-unknown-pragmas
.endif
.if ${CC:T:Mclang} == "clang"
CLANG_NO_IAS = -no-integrated-as
CLANG_OPT_SMALL = -mllvm -stack-alignment=8 -mllvm -inline-threshold=3 \
-mllvm -enable-load-pre=false
.endif
.if ${MK_SSP} != "no" && ${MACHINE_CPUARCH} != "ia64" && \
${MACHINE_CPUARCH} != "arm" && ${MACHINE_CPUARCH} != "mips"
# Don't use -Wstack-protector as it breaks world with -Werror.
SSP_CFLAGS ?= -fstack-protector
CFLAGS += ${SSP_CFLAGS}
.endif
# Allow user-specified additional warning flags
CFLAGS += ${CWARNFLAGS}
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