Change parameter name to match comment.

[gnulib.git] / m4 / putenv.m4

diff --git a/m4/putenv.m4 b/m4/putenv.m4
index 39a6e75..90ec170 100644 (file)
--- a/m4/putenv.m4
+++ b/m4/putenv.m4
@@ -1,12 +1,15 @@
-#serial 5
+# putenv.m4 serial 9
+dnl Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
 
 dnl From Jim Meyering.
 dnl
 dnl Check whether putenv ("FOO") removes FOO from the environment.
 dnl The putenv in libc on at least SunOS 4.1.4 does *not* do that.
-dnl
 
-AC_DEFUN([jm_FUNC_PUTENV],
+AC_DEFUN([gl_FUNC_PUTENV],
 [AC_CACHE_CHECK([for SVID conformant putenv], jm_cv_func_svid_putenv,
   [AC_TRY_RUN([
     int
@@ -36,5 +39,11 @@ AC_DEFUN([jm_FUNC_PUTENV],
     AC_LIBOBJ(putenv)
     AC_DEFINE(putenv, rpl_putenv,
       [Define to rpl_putenv if the replacement function should be used.])
+    gl_PREREQ_PUTENV
   fi
 ])
+
+# Prerequisites of lib/putenv.c.
+AC_DEFUN([gl_PREREQ_PUTENV], [
+  AC_CHECK_HEADERS_ONCE(unistd.h)
+])