include proper headers for crypt()

this also prepares for crypt_r()

1 files changed, 3 insertions, 2 deletions

diff --git a/bigcrypt.c b/bigcrypt.c
index 28d042a..c1486fa 100644
--- a/bigcrypt.c
+++ b/bigcrypt.c
@@ -24,10 +24,11 @@
  * Andy Phillips <atp@mssl.ucl.ac.uk>
  */
 
+#define _XOPEN_SOURCE
+#include <unistd.h>
 #include <string.h>
 
-char *crypt(const char *key, const char *salt);
-char *bigcrypt(const char *key, const char *salt);
+#include "bigcrypt.h"
 
 /*
  * Max cleartext password length in segments of 8 characters this