1 files changed, 6 insertions, 0 deletions

diff --git a/zconf.h b/zconf.h.in
index 71a41ad..eec8ab0 100644
--- a/zconf.h
+++ b/zconf.h.in
@@ -7,6 +7,8 @@
 
 #ifndef ZCONF_H
 #define ZCONF_H
+#cmakedefine Z_PREFIX
+#cmakedefine Z_HAVE_UNISTD_H
 
 /*
  * If you *really* need a unique prefix for all types and library functions,
@@ -361,6 +363,10 @@ typedef uLong FAR uLongf;
 #endif
 
 #ifdef HAVE_UNISTD_H    /* may be set to #if 1 by ./configure */
+#  define Z_HAVE_UNISTD_H
+#endif
+
+#ifdef Z_HAVE_UNISTD_H
 #  include <sys/types.h>    /* for off_t */
 #  include <unistd.h>       /* for SEEK_* and off_t */
 #  ifdef VMS