add def of dirfd() for those without it

diff --git a/getcwd.c b/getcwd.c
index 503925f043ddc3cd73944a4b97636b667ef7b2a5..d210a6f3ecaf2dc03675eedf771e11cc723fb1fa 100644 (file)
--- a/getcwd.c
+++ b/getcwd.c
@@ -72,6 +72,10 @@
 
 #include "compat.h"
 
+#ifndef dirfd
+#  define dirfd(dirp)  ((dirp)->dd_fd)
+#endif
+
 #define        ISDOT(dp) \
        (dp->d_name[0] == '.' && (dp->d_name[1] == '\0' || \
            (dp->d_name[1] == '.' && dp->d_name[2] == '\0')))