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configure: add -Wstrict-prototypes when available 

GCC (and Clang) have this useful warning that is not enabled by -Wall or
-Wextra. This will ensure that issues like those fixed in
4da52e3630
will trigger warnings.

Reviewed-by: Hendrik Leppkes <h.leppkes@gmail.com>
Signed-off-by: Ganesh Ajjanagadde <gajjanagadde@gmail.com>
This commit is contained in:
Ganesh Ajjanagadde 2015-10-22 14:37:31 -04:00
parent 8ed79c45b4
commit e6a93e59ad
1 changed files with 1 additions and 0 deletions
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@ -5637,6 +5637,7 @@ disabled iconv || check_func_headers iconv.h iconv || check_lib2 iconv.h iconv -
enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
# add some useful compiler flags if supported
check_cflags -Wstrict-prototypes
check_cflags -Wdeclaration-after-statement
check_cflags -Wall
check_cflags -Wdisabled-optimization