(jm_PREREQ_DIRNAME): New macro.

diff --git a/m4/prereq.m4 b/m4/prereq.m4
index bd37b79b4c656976d3fa7b44ce9dcab651c6503e..9734514a4cbeacf848943eb83fdcc20d50a4187f 100644 (file)
--- a/m4/prereq.m4
+++ b/m4/prereq.m4
@@ -1,4 +1,4 @@
-#serial 11
+#serial 12
 
 dnl These are the prerequisite macros for files in the lib/
 dnl directories of the fileutils, sh-utils, and textutils packages.
@@ -7,6 +7,7 @@ AC_DEFUN(jm_PREREQ,
 [
   jm_PREREQ_ADDEXT
   jm_PREREQ_CANON_HOST
+  jm_PREREQ_DIRNAME
   jm_PREREQ_ERROR
   jm_PREREQ_GETPAGESIZE
   jm_PREREQ_HUMAN
@@ -39,6 +40,12 @@ AC_DEFUN(jm_PREREQ_CANON_HOST,
                    netinet/in.h arpa/inet.h)
 ])
 
+AC_DEFUN(jm_PREREQ_DIRNAME,
+[
+  AC_HEADER_STDC
+  AC_CHECK_HEADERS(string.h)
+])
+
 # If you use human.c, you need the following files:
 # uintmax_t.m4 inttypes_h.m4 ulonglong.m4
 AC_DEFUN(jm_PREREQ_HUMAN,