2010-07-08 Dan Nicolaescu <dann@ics.uci.edu>
+ * configure.in: Use -Wold-style-definition if available.
+ This helps with the transition to standard C code, it can be
+ removed when done.
+
* configure.in (PRE_EDIT_LDFLAGS, POST_EDIT_LDFLAGS): Remove.
* configure.in (UNEXEC_OBJ): Add comment about values for MSDOS
unset has_option
unset SAVE_CFLAGS
+### Use -Wold-style-definition if the compiler supports it
+# This can be removed when conversion to standard C is finished.
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether gcc understands -Wold-style-definition" >&5
+$as_echo_n "checking whether gcc understands -Wold-style-definition... " >&6; }
+SAVE_CFLAGS="$CFLAGS"
+CFLAGS="$CFLAGS -Wold-style-definition"
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+
+int
+main ()
+{
+
+ ;
+ return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+ has_option=yes
+else
+ has_option=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+if test $has_option = yes; then
+ C_WARNINGS_SWITCH="-Wold-style-definition $C_WARNINGS_SWITCH"
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $has_option" >&5
+$as_echo "$has_option" >&6; }
+CFLAGS="$SAVE_CFLAGS"
+unset has_option
+unset SAVE_CFLAGS
+
+
#### Some other nice autoconf tests.
ac_ext=c
unset has_option
unset SAVE_CFLAGS
+### Use -Wold-style-definition if the compiler supports it
+# This can be removed when conversion to standard C is finished.
+AC_MSG_CHECKING([whether gcc understands -Wold-style-definition])
+SAVE_CFLAGS="$CFLAGS"
+CFLAGS="$CFLAGS -Wold-style-definition"
+AC_TRY_COMPILE([], [], has_option=yes, has_option=no,)
+if test $has_option = yes; then
+ C_WARNINGS_SWITCH="-Wold-style-definition $C_WARNINGS_SWITCH"
+fi
+AC_MSG_RESULT($has_option)
+CFLAGS="$SAVE_CFLAGS"
+unset has_option
+unset SAVE_CFLAGS
+
+
#### Some other nice autoconf tests.
dnl checks for programs