Index: configure.ac
==================================================================
--- configure.ac
+++ configure.ac
@@ -7,12 +7,14 @@
 AC_PROG_CPP
 AC_CHECK_TOOL(AR, ar)
 AC_PROG_RANLIB
 AC_PROG_LN_S
 AC_PROG_INSTALL
+
+CFLAGS="$CFLAGS -Wall"
 
 BUILDSYS_SHARED_LIB
 BUILDSYS_INIT
 BUILDSYS_TOUCH_DEPS
 
 AC_CONFIG_FILES(buildsys.mk)
 AC_OUTPUT