optc-gen.awk: Error instead of warning for conflicting help.

2012-05-13  Manuel López-Ibáñez  <manu@gcc.gnu.org>

gcc/
	* optc-gen.awk: Error instead of warning for conflicting help.
ada/
	* gcc-interface/lang.opt (I): Comment out help text with no effect.
	(nostdinc): Comment out help text with no effect.

From-SVN: r187437

gcc/ChangeLog

+2012-05-13  Manuel López-Ibáñez  <manu@gcc.gnu.org>
+
+	* optc-gen.awk: Error instead of warning for conflicting help.
+
 2012-05-12  Jason Merrill  <jason@redhat.com>
 
 	PR debug/53235

gcc/ada/ChangeLog

+2012-05-13  Manuel López-Ibáñez  <manu@gcc.gnu.org>
+
+	* gcc-interface/lang.opt (I): Comment out help text with no effect.
+	(nostdinc): Comment out help text with no effect.
+
 2012-05-12  Eric Botcazou  <ebotcazou@adacore.com>
 
 	* gcc-interface/Makefile.in (TOOLS_LIBS): Add ../../ggc-none.o.

gcc/ada/gcc-interface/lang.opt

@@ -48,7 +48,7 @@ Ada AdaWhy Alias(nostdlib)
 
 I
 Ada AdaWhy Joined Separate
--I <dir>.	Add <dir> to the end of the main source path
+; Documented in C but it should be: -I <dir>.	Add <dir> to the end of the main source path
 
 Wall
 Ada AdaWhy
@@ -60,7 +60,7 @@ Synonym of -gnatk8
 
 nostdinc
 Ada AdaWhy RejectNegative
-Do not look for source files in standard path
+; Documented in C but it should be: Do not look for source files in standard path
 
 nostdlib
 Ada AdaWhy

gcc/optc-gen.awk

@@ -188,9 +188,9 @@ for (i = 0; i < n_opts; i++) {
 		if (help[i + 1] == "")
 			help[i + 1] = help[i]
 		else if (help[i] != "" && help[i + 1] != help[i])
-			print "warning: multiple different help strings for " \
-				opts[i] ":\n\t" help[i] "\n\t" help[i + 1] \
-				| "cat 1>&2"
+			print "#error Multiple different help strings for " \
+				opts[i] ":\n\t" help[i] "\n\t" help[i + 1]
+				
 		i++;
 		back_chain[i] = "N_OPTS";
 		indices[opts[i]] = j;