Index: config.h.in
===================================================================
--- config.h.in	(revision 11610)
+++ config.h.in	(revision 11611)
@@ -222,23 +222,25 @@
 #	undef snprintf
 #	undef round
 #	undef strcasecmp
-#	undef fopen
-#	undef popen
-#	undef system
-#	undef remove
-#	undef rename
 #	define strdup      never_use_strdup__use_pcb_strdup
 #	define strndup     never_use_strndup__use_pcb_strndup
 #	define snprintf    never_use_snprintf__use_pcb_snprintf
 #	define round       never_use_round__use_pcb_round
 #	define strcasecmp  never_use_strcasecmp__use_pcb_strcasecmp
-#	define fopen       never_use_fopen__use_pcb_fopen
-#	define popen       never_use_popen__use_pcb_popen
-#	define system      never_use_system__use_pcb_system
-#	define remove      never_use_remove__use_pcb_remove
-#	define rename      never_use_rename__use_pcb_rename
+#	ifndef PCB_SAFE_FS
+#		undef fopen
+#		undef popen
+#		undef system
+#		undef remove
+#		undef rename
+#		define fopen       never_use_fopen__use_pcb_fopen
+#		define popen       never_use_popen__use_pcb_popen
+#		define system      never_use_system__use_pcb_system
+#		define remove      never_use_remove__use_pcb_remove
+#		define rename      never_use_rename__use_pcb_rename
+#	endif
+
 #endif
 
-
 #endif
 @]