Rely on Gnulib for <unistd.h>.

* libguile/async.c:
* libguile/backtrace.c:
* libguile/error.c:
* libguile/filesys.c:
* libguile/fports.c:
* libguile/gc-malloc.c:
* libguile/gc.c:
* libguile/gdbint.c:
* libguile/init.c:
* libguile/ioext.c:
* libguile/load.c:
* libguile/mallocs.c:
* libguile/mkstemp.c:
* libguile/ports.c:
* libguile/posix.c:
* libguile/r6rs-ports.c:
* libguile/random.c:
* libguile/rw.c:
* libguile/scmsigs.c:
* libguile/script.c:
* libguile/simpos.c:
* libguile/socket.c:
* libguile/stime.c:
* libguile/strports.c:
* libguile/threads.c: Unconditionally include <unistd.h>.

1 files changed, 1 insertions, 4 deletions

diff --git a/libguile/r6rs-ports.c b/libguile/r6rs-ports.c
index 5f3b156c0..83f899670 100644
--- a/libguile/r6rs-ports.c
+++ b/libguile/r6rs-ports.c
@@ -20,10 +20,7 @@
 # include <config.h>
 #endif
 
-#ifdef HAVE_UNISTD_H
-# include <unistd.h>
-#endif
-
+#include <unistd.h>
 #include <string.h>
 #include <stdio.h>
 #include <assert.h>