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-rw-r--r--libc/stdlib/setenv.c1
1 files changed, 1 insertions, 0 deletions
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