winegcc: Support the --target option like winebuild does.

tools/winegcc/winegcc.c

@@ -1429,6 +1429,7 @@ int main(int argc, char **argv)
 		case '-':
 		    next_is_arg = (strcmp("--param", argv[i]) == 0 ||
                                    strcmp("--sysroot", argv[i]) == 0 ||
+                                   strcmp("--target", argv[i]) == 0 ||
                                    strcmp("--lib-suffix", argv[i]) == 0);
 		    break;
 	    }
@@ -1656,6 +1657,12 @@ int main(int argc, char **argv)
                         else opts.sysroot = argv[i + 1];
                         if (opts.wine_objdir) raw_compiler_arg = raw_linker_arg = 0;
                     }
+                    else if (!strncmp("--target", argv[i], 8))
+                    {
+                        if (argv[i][8] == '=') parse_target_option( &opts, argv[i] + 9 );
+                        else parse_target_option( &opts, argv[i + 1] );
+                        raw_compiler_arg = raw_linker_arg = 0;
+                    }
                     else if (!strncmp("--lib-suffix", argv[i], 12) && opts.wine_objdir)
                     {
                         if (argv[i][12] == '=') opts.lib_suffix = argv[i] + 13;

tools/winegcc/winegcc.man.in

@@ -35,6 +35,9 @@ enters a special mode for building Wine itself. Developers should
 avoid prefixes ending with the magic suffix, or if that is not 
 possible, simply express it differently, such as '/tools/winebuild/',
 to avoid the special behaviour.
+.IP "\fB-b,--target \fItarget\fR"
+Specify the target architecture triplet for cross-compiling. winegcc
+will then invoke \fItarget\fR-gcc instead of gcc.
 .IP \fB-fno-short-wchar\fR
 Override the underlying type for wchar_t to be the default for the 
 target, instead of using short unsigned int, which is the default