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treat invalid C as an error even if warnings aren't enabled.

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This commit is contained in:
Rich Felker 2012-12-11 23:28:31 -05:00
parent bcc20d2b94
commit 2384f27d34
1 changed files with 11 additions and 1 deletions
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12
configure vendored
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@ -270,9 +270,19 @@ fnmatch '-march=*|*\ -march=*' "$CFLAGS" || tryldflag CFLAGS_AUTO -march=i486
fnmatch '-mtune=*|*\ -mtune=*' "$CFLAGS" || tryldflag CFLAGS_AUTO -mtune=generic
fi
#
# Even with -std=c99, gcc accepts some constructs which are constraint
# violations. We want to treat these as errors regardless of whether
# other purely stylistic warnings are enabled -- especially implicit
# function declarations, which are a dangerous programming error.
#
tryflag CFLAGS_AUTO -Werror=implicit-function-declaration
tryflag CFLAGS_AUTO -Werror=implicit-int
tryflag CFLAGS_AUTO -Werror=pointer-sign
tryflag CFLAGS_AUTO -Werror=pointer-arith
if test "x$warnings" = xyes ; then
tryflag CFLAGS_AUTO -Wall
tryflag CFLAGS_AUTO -Wpointer-arith
tryflag CFLAGS_AUTO -Wcast-align
tryflag CFLAGS_AUTO -Wno-parentheses
tryflag CFLAGS_AUTO -Wno-uninitialized