diff --git a/src/lib/util/avcomp.c b/src/lib/util/avcomp.c
index 1d8ff1e183a..0f2af7f68de 100644
--- a/src/lib/util/avcomp.c
+++ b/src/lib/util/avcomp.c
@@ -91,7 +91,7 @@
 #include "chd.h"
 
 #include <math.h>
-
+#include <stdlib.h>
 
 
 /***************************************************************************
diff --git a/src/lib/util/aviio.c b/src/lib/util/aviio.c
index ef2ebc62e81..17e63011737 100644
--- a/src/lib/util/aviio.c
+++ b/src/lib/util/aviio.c
@@ -37,6 +37,8 @@
 
 ***************************************************************************/
 
+#include <stdlib.h>
+
 #include "aviio.h"
 
 
diff --git a/src/lib/util/bitmap.c b/src/lib/util/bitmap.c
index 0f9eac3769e..860bc5c07ee 100644
--- a/src/lib/util/bitmap.c
+++ b/src/lib/util/bitmap.c
@@ -39,6 +39,8 @@
 
 #include "bitmap.h"
 
+#include <stdlib.h>
+
 #ifdef __cplusplus
 #include <new>
 #endif
diff --git a/src/lib/util/cdrom.c b/src/lib/util/cdrom.c
index 28bfd01961b..4f2fa1ba52a 100644
--- a/src/lib/util/cdrom.c
+++ b/src/lib/util/cdrom.c
@@ -47,6 +47,8 @@
 
 #include "cdrom.h"
 
+#include <stdlib.h>
+
 
 
 /***************************************************************************
diff --git a/src/lib/util/chd.c b/src/lib/util/chd.c
index ef09df83211..4cbe8b5c6d8 100644
--- a/src/lib/util/chd.c
+++ b/src/lib/util/chd.c
@@ -44,6 +44,8 @@
 #include <zlib.h>
 #include <time.h>
 #include <stddef.h>
+#include <stdlib.h>
+
 
 
 
diff --git a/src/lib/util/harddisk.c b/src/lib/util/harddisk.c
index 128b5372db3..ffae861a6d4 100644
--- a/src/lib/util/harddisk.c
+++ b/src/lib/util/harddisk.c
@@ -39,6 +39,7 @@
 
 #include "harddisk.h"
 
+#include <stdlib.h>
 
 
 /***************************************************************************
diff --git a/src/lib/util/huffman.c b/src/lib/util/huffman.c
index a03f192e580..3b9c4ea52b8 100644
--- a/src/lib/util/huffman.c
+++ b/src/lib/util/huffman.c
@@ -125,6 +125,8 @@
 
 ***************************************************************************/
 
+#include <stdlib.h>
+
 #include "huffman.h"
 
 
diff --git a/src/lib/util/options.c b/src/lib/util/options.c
index aeb6d187467..cab6714ac7d 100644
--- a/src/lib/util/options.c
+++ b/src/lib/util/options.c
@@ -38,6 +38,7 @@
 ***************************************************************************/
 
 #include <stdarg.h>
+#include <stdlib.h>
 #include <ctype.h>
 #include "options.h"
 #include "astring.h"
diff --git a/src/lib/util/palette.c b/src/lib/util/palette.c
index f908a3f197e..ab13edc76ea 100644
--- a/src/lib/util/palette.c
+++ b/src/lib/util/palette.c
@@ -38,6 +38,7 @@
 ******************************************************************************/
 
 #include "palette.h"
+#include <stdlib.h>
 #include <math.h>
 
 
diff --git a/src/lib/util/png.c b/src/lib/util/png.c
index 47fdf645dc0..620b9b76779 100644
--- a/src/lib/util/png.c
+++ b/src/lib/util/png.c
@@ -38,6 +38,8 @@
 ***************************************************************************/
 
 #include <math.h>
+#include <stdlib.h>
+
 #include <zlib.h>
 #include "png.h"
 
diff --git a/src/lib/util/pool.c b/src/lib/util/pool.c
index b73d948dccf..b75c99c96fd 100644
--- a/src/lib/util/pool.c
+++ b/src/lib/util/pool.c
@@ -39,6 +39,8 @@
 
 #include <stdarg.h>
 #include <stddef.h>
+#include <stdlib.h>
+
 #include "pool.h"
 #include "coreutil.h"
 
diff --git a/src/lib/util/tagmap.c b/src/lib/util/tagmap.c
index 3c0db36d72e..63f2e3c51db 100644
--- a/src/lib/util/tagmap.c
+++ b/src/lib/util/tagmap.c
@@ -39,6 +39,8 @@
 
 #include "tagmap.h"
 
+#include <stdlib.h>
+
 
 /***************************************************************************
     FUNCTION PROTOTYPES
diff --git a/src/lib/util/unzip.c b/src/lib/util/unzip.c
index 6231f6f41da..847d7615659 100644
--- a/src/lib/util/unzip.c
+++ b/src/lib/util/unzip.c
@@ -41,6 +41,7 @@
 #include "unzip.h"
 
 #include <ctype.h>
+#include <stdlib.h>
 #include <zlib.h>