From: Gaius Mulley <gaiusmod2@gmail.com>
Date: Tue, 11 Feb 2025 01:26:43 +0000 (+0000)
Subject: PR modula2/118761: gm2 driver doesnt behave as gcc for -fhelp=BLA
X-Git-Tag: basepoints/gcc-16~2090
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3c5422e719d1fbabccaa9b63605171ea8bdfe57e;p=thirdparty%2Fgcc.git

PR modula2/118761: gm2 driver doesnt behave as gcc for -fhelp=BLA

This patch enables the gm2 driver to handle -fsyntax-only -fhelp=optimizers,
for example, correctly without terminating with gm2: fatal error:
no input files.

gcc/m2/ChangeLog:

	PR modula2/118761
	* gm2spec.cc (lang_specific_driver): Add case clauses for
	OPT__help, OPT__help_ set in_added_libraries to 0 and early
	return.

Signed-off-by: Gaius Mulley <gaiusmod2@gmail.com>
---

diff --git a/gcc/m2/gm2spec.cc b/gcc/m2/gm2spec.cc
index a9dc4703ce3..868e5c5619e 100644
--- a/gcc/m2/gm2spec.cc
+++ b/gcc/m2/gm2spec.cc
@@ -576,6 +576,12 @@ lang_specific_driver (struct cl_decoded_option **in_decoded_options,
 	  args[i] |= SKIPOPT; /* We will add the option if it is needed.  */
 	  m2_path_name = decoded_options[i].arg;
 	  break;
+	case OPT__help:
+	case OPT__help_:
+	  /* Let gcc.cc handle this, as it has a really
+	     cool facility for handling --help and --verbose --help.  */
+	  *in_added_libraries = 0;
+	  return;
 	case OPT_I:
 	  args[i] |= SKIPOPT; /* We will add the option if it is needed.  */
 	  push_back_Ipath (decoded_options[i].arg);