diff --git a/path.h b/path.h
new file mode 100644
index 0000000..b85dac7
--- /dev/null
+++ b/path.h
@@ -0,0 +1,7 @@
+#ifndef PATH_H
+#define PATH_H
+
+char *path_search(char *name, char *mode, char *path);
+
+#endif
+
diff --git a/rcfile.c b/rcfile.c
index 9c7d1a3..608222b 100644
--- a/rcfile.c
+++ b/rcfile.c
@@ -8,12 +8,11 @@
 #include "defs.h"
 #include "rc.h"
 #include "hw.h"
+#include "path.h"
 
 
 char *rcpath;
 
-char *path_search();
-
 int rc_sourcefile(char *filename)
 {
 	FILE *f;
diff --git a/rckeys.c b/rckeys.c
index 8dc2eba..d2f8fb7 100644
--- a/rckeys.c
+++ b/rckeys.c
@@ -1,10 +1,10 @@
+#undef _GNU_SOURCE
+#define _GNU_SOURCE
+#include <string.h>
 
 
 
 #include <stdlib.h>
-#include <string.h>
-
-char *strdup();
 
 #include "defs.h"
 #include "rc.h"
diff --git a/rtc.c b/rtc.c
index 9ae17d5..abe9590 100644
--- a/rtc.c
+++ b/rtc.c
@@ -95,9 +95,9 @@ void rtc_tick()
 
 void rtc_save_internal(FILE *f)
 {
-	fprintf(f, "%d %d %d %02d %02d %02d %02d\n%d\n",
+	fprintf(f, "%d %d %d %02d %02d %02d %02d\n%ld\n",
 		rtc.carry, rtc.stop, rtc.d, rtc.h, rtc.m, rtc.s, rtc.t,
-		time(0));
+		(long) time(0));
 }
 
 void rtc_load_internal(FILE *f)
diff --git a/sys/linux/fbdev.c b/sys/linux/fbdev.c
index eb1bad9..adec7b9 100644
--- a/sys/linux/fbdev.c
+++ b/sys/linux/fbdev.c
@@ -218,7 +218,7 @@ void vid_init()
 	if (vmode[1] > vi.yres) vmode[1] = vi.yres;
 	
 	mmio = mmap(0, fi.mmio_len, PROT_READ|PROT_WRITE, MAP_SHARED, fbfd, fi.smem_len);
-	if ((int)mmio == -1) mmio = 0;
+	if ((long)mmio == -1) mmio = 0;
 
 	overlay_init();