Allow --specs options.

2012-05-30  Christian Bruel  <christian.bruel@st.com>

	* gcc.c (save_switch): Add user_p parameter.
	(read_specs): Likewise.
	(set_specs): Likewise.
	(validate_switches): Likewise.
	(validate_switches_from_spec): Likewise.
	(validate_all_switches): Pass on user_p parameter.
	(struct spec_list): Add user_p field.
	(struct switchstr): Add known field.
	(save_switch): Add known parameter.
	(INIT_STATIC_SPEC): Initialize user_p;
	(driver_unknown_option_callbac): call save_switch if
	OPT_SPECIAL_unknown.
	(driver_handle_option): Propagate OPT_specs.
	(do_spec_1): Set validated only if known.
	(check_live_switch): Likewise.
	(validate_switches): Set validated if known or user_spec.

From-SVN: r188102

gcc/ChangeLog

+2012-06-01  Christian Bruel  <christian.bruel@st.com>
+
+	* gcc.c (save_switch): Add user_p parameter.
+	(read_specs): Likewise.
+	(set_specs): Likewise.
+	(validate_switches): Likewise.
+	(validate_switches_from_spec): Likewise.
+	(validate_all_switches): Pass on user_p parameter.
+	(struct spec_list): Add user_p field.
+	(struct switchstr): Add known field.
+	(save_switch): Add known parameter.
+	(INIT_STATIC_SPEC): Initialize user_p;
+	(driver_unknown_option_callbac): call save_switch if
+	OPT_SPECIAL_unknown.
+	(driver_handle_option): Propagate OPT_specs.
+	(do_spec_1): Set validated only if known.
+	(check_live_switch): Likewise.
+	(validate_switches): Set validated if known or user_spec.
+
 2012-06-01  Hans-Peter Nilsson  <hp@axis.com>
 
 	Add CRIS atomic patterns for 1, 2, and 4 bytes.

gcc/testsuite/ChangeLog

+2012-06-01  Christian Bruel  <christian.bruel@st.com>
+
+	* gcc.dg/spec-options.c: New test.
+	* gcc.dg/foo.specs: New file.
+
 2012-06-01  Eric Botcazou  <ebotcazou@adacore.com>
 
 	PR ada/53517

gcc/testsuite/gcc.dg/foo.specs

+*cppruntime:
++ %{tfoo: -DFOO}

gcc/testsuite/gcc.dg/spec-options.c

+/* Check that -mfoo is accepted if defined in a user spec
+   and that it is not passed on the command line.  */
+/* Must be processed in EXTRA_SPECS to run.  */
+/* { dg-do run { target sh*-*-* } } */
+/* { dg-do compile } */
+/* { dg-options "-B${srcdir}/gcc.dg --specs=foo.specs -tfoo" } */
+
+extern void abort(void);
+
+int main(void)
+{
+#ifdef FOO
+  return 0;
+#else
+  abort();
+#endif
+}