recovered invoking win_bison from different folders

bison/src/files.c

@@ -412,6 +412,40 @@ unlink_generated_sources (void)
 /* Memory allocated by relocate2, to free.  */
 static char *relocate_buffer = NULL;
 
+extern const char* get_app_path();
+
+char* get_local_pkgdatadir()
+{
+	const char* program_path = 0;
+	const char* dir = 0;
+	const char* last_divider = 0;
+	char* local_pkgdatadir = NULL;
+	size_t dir_len = 0;
+	size_t local_pkgdatadir_len = 0;
+
+	program_path = dir = get_app_path();
+
+	while (*dir)
+	{
+		if (*dir == '\\' || *dir == '/')
+			last_divider = dir;
+		++dir;
+	}
+
+	if (!last_divider)
+		return PKGDATADIR;
+
+	++last_divider;
+
+	dir_len = last_divider - program_path;
+	local_pkgdatadir_len = dir_len + strlen(PKGDATADIR);
+	local_pkgdatadir = (char*)malloc((local_pkgdatadir_len + 1) * sizeof(char));
+	strncpy(local_pkgdatadir, program_path, dir_len);
+	strcpy(&local_pkgdatadir[dir_len], PKGDATADIR);
+
+	return local_pkgdatadir;
+}
+
 char const *
 pkgdatadir (void)
 {
@@ -420,7 +454,8 @@ pkgdatadir (void)
   else
     {
       char const *cp = getenv ("BISON_PKGDATADIR");
-      return cp ? cp : relocate2 (PKGDATADIR, &relocate_buffer);
+//	  return cp ? cp : relocate2(PKGDATADIR, &relocate_buffer);
+	  return cp ? cp : (relocate_buffer = get_local_pkgdatadir());
     }
 }
 

changelog.md

@@ -4,6 +4,9 @@
   * 2.4.x versions include bison version 2.7
   * 2.5.x versions include bison version 3.x
 
+### version 2.5.20
+  * recovered invoking win_bison from different folders
+
 ### version 2.5.19
   * upgrade win_bison to version 3.4.1