MacPython on MacOSX DP4 gets started in the wrong directory. The workaround…

MacPython on MacOSX DP4 gets started in the wrong directory. The workaround (ifdeffed by USE_ARGV0_CHDIR) is to do a chdir() to the folder part of our executable name.

Mac/Python/macmain.c

@@ -256,7 +256,22 @@ init_common(int *argcp, char ***argvp, int embedded)
 	} else {
 		/* Create argc/argv. Do it before we go into the options event loop. */
 		*argcp = PyMac_GetArgv(argvp, options.noargs);
-		
+#ifdef USE_ARGV0_CHDIR
+		printf("argc=%d, argv[0]=%x=%s\n", *argcp, (*argvp)[0], (*argvp)[0]);
+		if (*argcp >= 1 && (*argvp)[0] && (*argvp)[0][0]) {
+			/* Workaround for MacOS X, which currently (DP4) doesn't set
+			** the working folder correctly
+			*/
+			char app_wd[256], *p;
+			
+			strncpy(app_wd, (*argvp)[0], 256);
+			printf("Modifying dir, argv[0]=%s\n", (*argvp)[0]);
+			p = strrchr(app_wd, ':');
+			if ( p ) *p = 0;
+			printf("app_wd=%s\n", app_wd);
+			chdir(app_wd);
+		}
+#endif
 		/* Do interactive option setting, if allowed and <option> depressed */
 		PyMac_InteractiveOptions(&options, argcp, argvp);
 	}

Mac/mwerks/mwerks_carbon_config.h

@@ -9,6 +9,7 @@
 #define TARGET_API_MAC_CARBON 1
 #define TARGET_API_MAC_CARBON_NOTYET 1 /* Things we should do eventually, but not now */
 
+#define USE_ARGV0_CHDIR		/* Workaround for OSXDP4: change dir to argv[0] dir */
 /* #define USE_GUSI2		/* Stdio implemented with GUSI 2 */
 /* # define USE_GUSI1	/* Stdio implemented with GUSI 1 */
 #define USE_MSL			/* Use Mw Standard Library (as opposed to Plaugher C libraries) */