--- gnac-0.2.4.1/configure.ac
+++ gnac-0.2.4.1/configure.ac
@@ -122,16 +122,6 @@
   AC_SUBST(DISABLE_DEPRECATED)
 fi
 
-# debug support
-AC_ARG_ENABLE([debug], [],
-[ if test "$enableval" = "yes"; then
-    CFLAGS="-g -ggdb -O0"
-  else
-    CFLAGS="-O2"
-  fi
-  AC_SUBST([CFLAGS])
-  ])
-
 AC_SUBST([AM_CPPFLAGS])
 AC_SUBST([AM_CFLAGS])
 AC_SUBST([AM_LDFLAGS])