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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
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(NO_WARNS)
Add a mechanism to allow Makefiles to specify the particular C dialect in which the source code is written. This is controlled by the CSTD variable, which can have one of the following values: - "k&r" => -traditional - "c89" or "c90" => -std=iso9899:1990 - "c94" or "c95" => -std=iso9899:199409 - "c99" => -std=iso9899:1999 The corresponding option is added to CFLAGS regardless of WARNS level. This also removes -ansi from WARNS level 6, but adds -Wno-long-long to work around a weird gcc bug (-ansi, which is supposedly equivalent to -std=iso9899:1990, seems to turn long long warnings off instead of on) If CSTD is undefined, CFLAGS are unchanged except for the -ansi / -Wno-long-long change mentioned above for WARNS level 6.
2003-05-01 14:36:27 +00:00
. 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 ${CSTD} == "c99"
CFLAGS += -std=iso9899:1999
Don't use -pedantic unless we also set -std of some kind.
2003-05-05 21:13:32 +00:00
. else
CFLAGS += -std=${CSTD}
Add a mechanism to allow Makefiles to specify the particular C dialect in which the source code is written. This is controlled by the CSTD variable, which can have one of the following values: - "k&r" => -traditional - "c89" or "c90" => -std=iso9899:1990 - "c94" or "c95" => -std=iso9899:199409 - "c99" => -std=iso9899:1999 The corresponding option is added to CFLAGS regardless of WARNS level. This also removes -ansi from WARNS level 6, but adds -Wno-long-long to work around a weird gcc bug (-ansi, which is supposedly equivalent to -std=iso9899:1990, seems to turn long long warnings off instead of on) If CSTD is undefined, CFLAGS are unchanged except for the -ansi / -Wno-long-long change mentioned above for WARNS level 6.
2003-05-01 14:36:27 +00:00
. endif
Don't use -pedantic unless we also set -std of some kind.
2003-05-05 21:13:32 +00:00
CFLAGS += -pedantic
Add a mechanism to allow Makefiles to specify the particular C dialect in which the source code is written. This is controlled by the CSTD variable, which can have one of the following values: - "k&r" => -traditional - "c89" or "c90" => -std=iso9899:1990 - "c94" or "c95" => -std=iso9899:199409 - "c99" => -std=iso9899:1999 The corresponding option is added to CFLAGS regardless of WARNS level. This also removes -ansi from WARNS level 6, but adds -Wno-long-long to work around a weird gcc bug (-ansi, which is supposedly equivalent to -std=iso9899:1990, seems to turn long long warnings off instead of on) If CSTD is undefined, CFLAGS are unchanged except for the -ansi / -Wno-long-long change mentioned above for WARNS level 6.
2003-05-01 14:36:27 +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
. 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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