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freebsd-skq/share/mk/bsd.sys.mk

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Bring in the WARNS directive from NetBSD, localized in a new bsd.sys.mk to avoid polluting sys.mk. This directive controls the addition of compiler warning flags to CFLAGS in a relatively compiler-neutral manner. The idea is that WARNS can be set in Makefile.inc or in individual Makefiles as they become clean, to prevent the introduction of new warnings in the code. -Werror is added by default
2001-05-19 23:18:21 +00:00
# $FreeBSD$
#
# 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.
Gcc 3.1 has different -Wx flags.
2002-05-10 01:58:16 +00:00
# for GCC: http://gcc.gnu.org/onlinedocs/gcc-3.0.4/gcc_3.html#IDX143
Revert to a known-good state. Anyone desiring to experiment with stricter global settings is free to do so in his or her own source tree.
2003-06-14 11:57:44 +00:00
.if !defined(NO_WARNS)
Bring in the WARNS directive from NetBSD, localized in a new bsd.sys.mk to avoid polluting sys.mk. This directive controls the addition of compiler warning flags to CFLAGS in a relatively compiler-neutral manner. The idea is that WARNS can be set in Makefile.inc or in individual Makefiles as they become clean, to prevent the introduction of new warnings in the code. -Werror is added by default
2001-05-19 23:18:21 +00:00
. if defined(WARNS)
. if ${WARNS} > 0
Enable cpp(1) warnings in system headers. GCC is oriented on glibc which is externally maintained, so GCC ships with these warnings turned off by default. This is also consistent with the src/contrib/gcc/c-lex.c,v 1.2 change.
2003-03-31 13:10:51 +00:00
CFLAGS += -Wsystem-headers
Be more strict with WARNS now -- the GCC 3.1 turmoil is behind us.
2002-07-07 18:47:52 +00:00
. if !defined(NO_WERROR)
CFLAGS += -Werror
. endif
Bring in the WARNS directive from NetBSD, localized in a new bsd.sys.mk to avoid polluting sys.mk. This directive controls the addition of compiler warning flags to CFLAGS in a relatively compiler-neutral manner. The idea is that WARNS can be set in Makefile.inc or in individual Makefiles as they become clean, to prevent the introduction of new warnings in the code. -Werror is added by default
2001-05-19 23:18:21 +00:00
. endif
. if ${WARNS} > 1
Gcc 3.1 has different -Wx flags.
2002-05-10 01:58:16 +00:00
CFLAGS += -Wall -Wno-format-y2k
Add some granularity to the WARNS levels. 1: add -Werror 2: -Wall [only], as this is the most used warnings setting by developers 3: our old `1' 4: our old `2'
2001-12-15 06:02:15 +00:00
. endif
. if ${WARNS} > 2
CFLAGS += -W -Wstrict-prototypes -Wmissing-prototypes -Wpointer-arith
. endif
. if ${WARNS} > 3
CFLAGS += -Wreturn-type -Wcast-qual -Wwrite-strings -Wswitch -Wshadow -Wcast-align
Bring in the WARNS directive from NetBSD, localized in a new bsd.sys.mk to avoid polluting sys.mk. This directive controls the addition of compiler warning flags to CFLAGS in a relatively compiler-neutral manner. The idea is that WARNS can be set in Makefile.inc or in individual Makefiles as they become clean, to prevent the introduction of new warnings in the code. -Werror is added by default
2001-05-19 23:18:21 +00:00
. endif
Add WARNS levels 5 and 6: 5 gives us -Wuninitialized rather than -Wno-uninitialized 6 gives us full BDECFLAGS
2002-04-10 02:45:22 +00:00
# BDECFLAGS
. if ${WARNS} > 5
Don't use -pedantic unless we also set -std of some kind.
2003-05-05 21:13:32 +00:00
CFLAGS += -Wbad-function-cast -Wchar-subscripts -Winline -Wnested-externs -Wredundant-decls
Add WARNS levels 5 and 6: 5 gives us -Wuninitialized rather than -Wno-uninitialized 6 gives us full BDECFLAGS
2002-04-10 02:45:22 +00:00
. endif
. if ${WARNS} > 1 && ${WARNS} < 5
Put -Wno-uninitialized at the end of the warns flags as it may be enabeled by several flags (in this case -W and -Wall). Reviewed by: bde
2002-01-05 20:17:50 +00:00
# XXX Delete -Wuninitialized by default for now -- the compiler doesn't
# XXX always get it right.
CFLAGS += -Wno-uninitialized
. endif
Bring in the WARNS directive from NetBSD, localized in a new bsd.sys.mk to avoid polluting sys.mk. This directive controls the addition of compiler warning flags to CFLAGS in a relatively compiler-neutral manner. The idea is that WARNS can be set in Makefile.inc or in individual Makefiles as they become clean, to prevent the introduction of new warnings in the code. -Werror is added by default
2001-05-19 23:18:21 +00:00
. endif
. if defined(FORMAT_AUDIT)
WFORMAT = 1
. endif
. if defined(WFORMAT)
. if ${WFORMAT} > 0
Gcc 3.1 has different -Wx flags.
2002-05-10 01:58:16 +00:00
#CFLAGS += -Wformat-nonliteral -Wformat-security -Wno-format-extra-args
CFLAGS += -Wformat=2 -Wno-format-extra-args
Be more strict with WARNS now -- the GCC 3.1 turmoil is behind us.
2002-07-07 18:47:52 +00:00
. if !defined(NO_WERROR)
CFLAGS += -Werror
. endif
Only add -Werror if in fact we have set WARNS or WFORMAT to >0
2001-05-19 23:32:19 +00:00
. endif
Bring in the WARNS directive from NetBSD, localized in a new bsd.sys.mk to avoid polluting sys.mk. This directive controls the addition of compiler warning flags to CFLAGS in a relatively compiler-neutral manner. The idea is that WARNS can be set in Makefile.inc or in individual Makefiles as they become clean, to prevent the introduction of new warnings in the code. -Werror is added by default
2001-05-19 23:18:21 +00:00
. endif
.endif
# Allow user-specified additional warning flags
CFLAGS += ${CWARNFLAGS}
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