diff --git a/config.h.in b/config.h.in
index 33b004422c0..65edee9b148 100644
--- a/config.h.in
+++ b/config.h.in
@@ -187,6 +187,9 @@
 /* Define if you have the plock function.  */
 #undef HAVE_PLOCK
 
+/* Define if you have the putenv function.  */
+#undef HAVE_PUTENV
+
 /* Define if you have the readlink function.  */
 #undef HAVE_READLINK
 
diff --git a/configure b/configure
index 4ee5fe97868..3631f187c83 100755
--- a/configure
+++ b/configure
@@ -1,6 +1,6 @@
 #! /bin/sh
 
-# From configure.in Revision: 1.28 
+# From configure.in Revision: 1.29 
 
 # Guess values for system-dependent variables and create Makefiles.
 # Generated automatically using autoconf version 2.10 
@@ -2133,7 +2133,7 @@ fi
 # checks for library functions
 for ac_func in chown clock dlopen flock ftime ftruncate \
  gethostname_r getpeername getpgrp getpid gettimeofday getwd \
- link lstat mkfifo nice plock readlink \
+ link lstat mkfifo nice plock putenv readlink \
  select setgid setuid setsid setpgid setpgrp setvbuf \
  sigaction siginterrupt sigrelse strftime symlink \
  tcgetpgrp tcsetpgrp times truncate uname waitpid