3 files changed, 3 insertions, 0 deletions
diff --git a/libc/stdlib/mkstemp.c b/libc/stdlib/mkstemp.c
index 738952815..551f03199 100644
--- a/libc/stdlib/mkstemp.c
+++ b/libc/stdlib/mkstemp.c
@@ -1,5 +1,6 @@
 #include <string.h>
 #include <features.h>
+#include <errno.h>
 #include <unistd.h>
 #include <fcntl.h>
 
diff --git a/libc/stdlib/mktemp.c b/libc/stdlib/mktemp.c
index cfdcf0913..4b9f71d47 100644
--- a/libc/stdlib/mktemp.c
+++ b/libc/stdlib/mktemp.c
@@ -1,5 +1,6 @@
 #include <string.h>
 #include <features.h>
+#include <errno.h>
 #include <unistd.h>
 #include <fcntl.h>
 #include <sys/stat.h>
diff --git a/libc/stdlib/setenv.c b/libc/stdlib/setenv.c
index b17280562..6628e4cc7 100644
--- a/libc/stdlib/setenv.c
+++ b/libc/stdlib/setenv.c
@@ -19,6 +19,7 @@ Cambridge, MA 02139, USA.  */
 #include <stdlib.h>
 #include <string.h>
 #include <unistd.h>
+#include <errno.h>
 
 #if !defined(HAVE_GNU_LD) && !defined (__ELF__)
 #define	__environ	environ