2 files changed, 14 insertions, 0 deletions
diff --git a/ascwave.c b/ascwave.c
index a4009e5..b2a6654 100644
--- a/ascwave.c
+++ b/ascwave.c
@@ -7,6 +7,13 @@
 #include <malloc.h>
 #endif
 
+/* support older Pd versions without sys_fopen(), sys_fclose(), and, sys_close() */
+#if PD_MAJOR_VERSION == 0 && PD_MINOR_VERSION < 44
+#define sys_fopen fopen
+#define sys_fclose fclose
+#define sys_close close
+#endif
+
 #ifndef RAND_MAX
 #define	RAND_MAX	21
 #endif
diff --git a/proc.c b/proc.c
index ed7039b..339ee11 100644
--- a/proc.c
+++ b/proc.c
@@ -12,6 +12,13 @@
 // later for number of users
 // #include <utmp.h>
 
+/* support older Pd versions without sys_fopen(), sys_fclose(), and, sys_close() */
+#if PD_MAJOR_VERSION == 0 && PD_MINOR_VERSION < 44
+#define sys_fopen fopen
+#define sys_fclose fclose
+#define sys_close close
+#endif
+
 #ifndef SSIZE_MAX
 #define SSIZE_MAX 255
 #endif