Index: /trunk/stac/configure.ac
===================================================================
--- /trunk/stac/configure.ac	(revision 6452)
+++ /trunk/stac/configure.ac	(revision 6453)
@@ -14,8 +14,16 @@
 dnl AC_PROG_LIBTOOL
 
+dnl handle debug building
+AC_ARG_ENABLE(optimize,
+  [AS_HELP_STRING(--enable-optimize,enable compiler optimization)],
+  [AC_MSG_RESULT(compile optimization enabled)
+   CFLAGS="${CFLAGS=} -O2"],
+  [AC_MSG_RESULT([compile optimization disabled])
+   CFLAGS="${CFLAGS=} -O0 -g"]
+)
+
 PKG_CHECK_MODULES([PSLIB], [pslib >= 0.9.0]) 
 
-CFLAGS="${CFLAGS}"
-stac_CFLAGS="-Wall -Werror -std=c99 -O2 -DPS_NO_TRACE"
+stac_CFLAGS="-Wall -Werror -std=c99 -DPS_NO_TRACE"
 AC_SUBST([stac_CFLAGS])