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Add a mechanism to allow Makefiles to specify the particular C dialect

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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.
This commit is contained in:
des 2003-05-01 14:36:27 +00:00
parent c7b799cc91
commit d147648191
1 changed files with 12 additions and 1 deletions
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13
share/mk/bsd.sys.mk
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@ -9,6 +9,17 @@
# for GCC: http://gcc.gnu.org/onlinedocs/gcc-3.0.4/gcc_3.html#IDX143
.if !defined(NO_WARNS)
. 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
. endif
. endif
. if defined(WARNS)
. if ${WARNS} > 0
CFLAGS += -Wsystem-headers
@ -27,7 +38,7 @@ CFLAGS += -Wreturn-type -Wcast-qual -Wwrite-strings -Wswitch -Wshadow -Wcast-al
. endif
# BDECFLAGS
. if ${WARNS} > 5
CFLAGS += -ansi -pedantic -Wbad-function-cast -Wchar-subscripts -Winline -Wnested-externs -Wredundant-decls
CFLAGS += -pedantic -Wno-long-long -Wbad-function-cast -Wchar-subscripts -Winline -Wnested-externs -Wredundant-decls
. endif
. if ${WARNS} > 1 && ${WARNS} < 5
# XXX Delete -Wuninitialized by default for now -- the compiler doesn't