Re: AC_CHECK_FUNCS and gcc with -Werror

[Ralf Corsepius]

On 03/03/2010 11:52 AM, Steffen Dettmer wrote:
> Hi,
>
> in configure.in I have:
>
> AC_CHECK_FUNCS(printf)
>
> together with some
>
> ------------------------------------------------------------------->8=======
> AC_DEFUN([IC_ENABLE_ERRORS],[
>    AC_ARG_ENABLE(errors,
>      [ --enable-errors[=ARG]         Enable error mode
>          (warnings are errors) [ARG=no]],
>    ....
>    if test x$enable_errors = xyes ; then
>      case $CC in
>        dnl Just in case someone would have a non-gcc "thingcc", don't match *gcc
>        gcc|*-gcc)
>          CFLAGS="$CFLAGS -Werror";
>          ;;
> =======8<-------------------------------------------------------------------
>
>
>
> In config.log then:
>
> configure:11204: gcc -o conftest  -Wall -Wmissing-prototypes
> -fstrict-aliasing -D_GNU_SOURCE -ansi -ggdb -D_REENTRANT -Werror
> -ggdb conftest
> .c  -lpthread>&5
> cc1: warnings being treated as errors
> conftest.c:67: warning: conflicting types for built-in function 'printf'
>
> what to do best here?
Not using -Werror

Ralf