Define the right macro for Linux and other GNU-based systems to get a correct declara...

diff --git a/crypto/engine/enginetest.c b/crypto/engine/enginetest.c
index 6f18ebd9623272cecb31070d47db34866e85c3fc..f152f642f130cac31961610fd7e1a8c90d75b53c 100644 (file)
--- a/crypto/engine/enginetest.c
+++ b/crypto/engine/enginetest.c
@@ -58,9 +58,14 @@
 
 #include <stdio.h>
 #include <openssl/e_os2.h>
+/* The following defines enable the declaration of strdup(), which is an
+   extended function according to X/Open. */
 #ifdef OPENSSL_SYS_VMS_DECC
 # define _XOPEN_SOURCE_EXTENDED
 #endif
+#ifdef OPENSSL_SYS_UNIX
+# define __USE_XOPEN_EXTENDED  /* For Linux and probably anything GNU */
+#endif
 #include <string.h>
 #include <openssl/engine.h>
 #include <openssl/err.h>