re PR driver/44076 (-MT <target> behaves different as -MT<target> (w/o space))

	PR driver/44076
	* opts.h (struct cl_option): Add alias_arg, neg_alias_arg and
	alias_target fields.
	* opt-functions.awk (opt_sanitized_name): Don't handle
	finline-limit=, Wlarger-than= and ftemplate-depth= specially.
	* optc-gen.awk: Generate alias fields.
	* opth-gen.awk: Explicitly give values for OPT_* enum constants.
	Don't generate such constants for aliases.
	* opts-common.c (generate_canonical_option): New.
	(decode_cmdline_option): Handle aliases.  Use
	generate_canonical_option for known options instead of copying the
	input option text.
	* doc/options.texi (Alias): Document.
	* common.opt (W, Wlarger-than-, aux-info=, finline-limit-,
	fstack-check, specs): Mark as aliases.
	* gcc.c (driver_handle_option): Canonicalize -L options to joined
	arguments.
	(driver_handle_option): Don't handle OPT_specs.
	* opts.c (common_handle_option): Don't handle options marked as
	aliases.
	(enable_warning_as_error): Handle aliases.
	* stor-layout.c (layout_decl): Use OPT_Wlarger_than_ instead of
	OPT_Wlarger_than_eq.
	* tree-optimize.c (tree_rest_of_compilation): Use
	OPT_Wlarger_than_ instead of OPT_Wlarger_than_eq.

c-family:
	* c.opt (Wcomments, Werror-implicit-function-declaration,
	ftemplate-depth-, std=c89, std=c9x, std=gnu89, std=gnu9x,
	std=iso9899:1990, std=iso9899:1999, std=iso9899:199x): Mark as
	aliases.
	* c-common.c (option_codes): Use OPT_Wcomment instead of
	OPT_Wcomments.
	* c-opts.c (warning_as_error_callback, c_common_handle_option):
	Don't handle options marked as aliases.

java:
	* lang.opt (CLASSPATH, bootclasspath, classpath, encoding,
	fCLASSPATH=): Mark as Java options and as aliases.
	* jvspec.c (jvgenmain_spec): Don't handle -fCLASSPATH*.
	(lang_specific_driver): Don't handle options marked as aliases.
	* lang.c (java_handle_option): Don't handle OPT_fCLASSPATH_.

testsuite:
	* gcc.dg/cpp/warn-comments-3.c: New.  Based on warn-comments-2.c
	but using -Werror=comment.
	* gcc.dg/cpp/warn-comments.c, gcc.dg/cpp/warn-comments-2.c: Adjust
	expected error messages.

From-SVN: r163770

1 files changed, 10 insertions, 10 deletions

diff --git a/gcc/c-family/c.opt b/gcc/c-family/c.opt
index 05fedd6..5cba0de 100644
--- a/gcc/c-family/c.opt
+++ b/gcc/c-family/c.opt
@@ -164,7 +164,7 @@ C ObjC C++ ObjC++ Warning
 Warn about possibly nested block comments, and C++ comments spanning more than one physical line
 
 Wcomments
-C ObjC C++ ObjC++ Warning
+C ObjC C++ ObjC++ Warning Alias(Wcomment)
 Synonym for -Wcomment
 
 Wconversion
@@ -216,7 +216,7 @@ C ObjC C++ ObjC++
 ; Documented in common.opt
 
 Werror-implicit-function-declaration
-C ObjC RejectNegative Warning
+C ObjC RejectNegative Warning Alias(Werror=, implicit-function-declaration)
 This switch is deprecated; use -Werror=implicit-function-declaration instead
 
 Wfloat-equal
@@ -804,7 +804,7 @@ C ObjC C++ ObjC++ Joined RejectNegative UInteger
 -ftabstop=<number>	Distance between tab stops for column reporting
 
 ftemplate-depth-
-C++ ObjC++ Joined RejectNegative UInteger Undocumented
+C++ ObjC++ Joined RejectNegative Undocumented Alias(ftemplate-depth=)
 
 ftemplate-depth=
 C++ ObjC++ Joined RejectNegative UInteger
@@ -972,7 +972,7 @@ C ObjC
 Conform to the ISO 201X C standard draft (experimental and incomplete support)
 
 std=c89
-C ObjC
+C ObjC Alias(std=c90)
 Conform to the ISO 1990 C standard
 
 std=c90
@@ -984,7 +984,7 @@ C ObjC
 Conform to the ISO 1999 C standard
 
 std=c9x
-C ObjC
+C ObjC Alias(std=c99)
 Deprecated in favor of -std=c99
 
 std=gnu++98
@@ -1003,7 +1003,7 @@ C ObjC
 Conform to the ISO 201X C standard draft with GNU extensions (experimental and incomplete support)
 
 std=gnu89
-C ObjC
+C ObjC Alias(std=gnu90)
 Conform to the ISO 1990 C standard with GNU extensions
 
 std=gnu90
@@ -1015,11 +1015,11 @@ C ObjC
 Conform to the ISO 1999 C standard with GNU extensions
 
 std=gnu9x
-C ObjC
+C ObjC Alias(std=gnu99)
 Deprecated in favor of -std=gnu99
 
 std=iso9899:1990
-C ObjC
+C ObjC Alias(std=c90)
 Conform to the ISO 1990 C standard
 
 std=iso9899:199409
@@ -1027,11 +1027,11 @@ C ObjC
 Conform to the ISO 1990 C standard as amended in 1994
 
 std=iso9899:1999
-C ObjC
+C ObjC Alias(std=c99)
 Conform to the ISO 1999 C standard
 
 std=iso9899:199x
-C ObjC
+C ObjC Alias(std=c99)
 Deprecated in favor of -std=iso9899:1999
 
 traditional-cpp