aclocal: Use -Werror when checking compiler flags (try 2)

[Alexandre Julliard]

Per Johansson <per at morth.org> writes:

> ...if supported by compiler.
> This makes clang exit with error on unsupported warnings.
> ---
>  aclocal.m4   | 2 +-
>  configure.ac | 1 +
>  2 files changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/aclocal.m4 b/aclocal.m4
> index 14cf916..a6d9f12 100644
> --- a/aclocal.m4
> +++ b/aclocal.m4
> @@ -74,7 +74,7 @@ AC_DEFUN([WINE_TRY_CFLAGS],
>  [AS_VAR_PUSHDEF([ac_var], ac_cv_cflags_[[$1]])dnl
>  AC_CACHE_CHECK([whether the compiler supports $1], ac_var,
>  [ac_wine_try_cflags_saved=$CFLAGS
> -CFLAGS="$CFLAGS $1"
> +CFLAGS="$CFLAGS $ac_wine_try_cflags_werror $1"
>  AC_LINK_IFELSE([AC_LANG_SOURCE([[int main(int argc, char **argv) { return 0; }]])],
>                 [AS_VAR_SET(ac_var,yes)], [AS_VAR_SET(ac_var,no)])

aclocal macros should be stand-alone, they shouldn't depend on things
done by the main configure.

-- 
Alexandre Julliard
julliard at winehq.org