shithub: libdvdcss

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attributes.m4: Properly declare parameterless main() functions.

--- a/m4/attributes.m4

+++ b/m4/attributes.m4

@@ -39,7 +39,7 @@

   AC_CACHE_VAL(AS_TR_SH([cc_cv_cflags_$1]),

     [ac_save_CFLAGS="$CFLAGS"

      CFLAGS="$CFLAGS $1"

-     AC_LINK_IFELSE([AC_LANG_SOURCE([int main() { return 0; }])],

+     AC_LINK_IFELSE([AC_LANG_SOURCE([int main(void) { return 0; }])],

        [eval "AS_TR_SH([cc_cv_cflags_$1])='yes'"],

        [eval "AS_TR_SH([cc_cv_cflags_$1])='no'"])

      CFLAGS="$ac_save_CFLAGS"

@@ -89,7 +89,7 @@

     AS_TR_SH([cc_cv_ldflags_$1]),

     [ac_save_LDFLAGS="$LDFLAGS"

      LDFLAGS="$LDFLAGS $1"

-     AC_LINK_IFELSE([AC_LANG_SOURCE([int main() { return 1; }])],

+     AC_LINK_IFELSE([AC_LANG_SOURCE([int main(void) { return 1; }])],

        [eval "AS_TR_SH([cc_cv_ldflags_$1])='yes'"],

        [eval "AS_TR_SH([cc_cv_ldflags_$1])="])

      LDFLAGS="$ac_save_LDFLAGS"

@@ -281,7 +281,7 @@

      CFLAGS="$CFLAGS $cc_cv_werror"

      for cc_attribute_align_try in 64 32 16 8 4 2; do

         AC_COMPILE_IFELSE([

-          int main() {

+          int main(void) {

             static char c __attribute__ ((aligned($cc_attribute_align_try))) = 0;

             return c;

           }], [cc_cv_attribute_aligned=$cc_attribute_align_try; break])