--- deliantra/dclient/configure.ac	2010/10/17 08:14:43	1.1
+++ deliantra/dclient/configure.ac	2010/10/18 14:11:42	1.2
@@ -14,6 +14,16 @@
 
 # build tools
 AC_PROG_CXX
+AC_PROG_YACC
+AC_PROG_LEX
+
+# debugging
+AC_CHECK_HEADERS([dnl
+   valgrind/valgrind.h dnl
+   valgrind/memcheck.h dnl
+   execinfo.h dnl
+   bfd.h dnl
+])
 
 AC_CONFIG_FILES([Makefile])
 AC_OUTPUT