--- configure.in.orig	2010-06-02 20:41:36 UTC
+++ configure.in
@@ -26,7 +26,7 @@ dnl Checks for libraries.
 
 dnl Checks for header files.
 AC_HEADER_STDC
-AC_CHECK_HEADERS(malloc.h unistd.h regex.h gnuregex.h)
+AC_CHECK_HEADERS(malloc.h unistd.h regex.h)
 
 dnl Checks for typedefs, structures, and compiler characteristics.
 AC_C_CONST