diff --git a/.cvsignore b/.cvsignore
new file mode 100644
index 0000000..7eb6db5
--- /dev/null
+++ b/.cvsignore
@@ -0,0 +1,3 @@
+configure config.log config.cache config.status Makefile
+acl.c acl_scan.c acl_scan.h
+petidomo
diff --git a/configure.in b/configure.in
index 78a4e3e..e9e12c0 100644
--- a/configure.in
+++ b/configure.in
@@ -35,15 +35,9 @@ dnl Remove '-g' from the compile flags.
 dnl
 CFLAGS=`echo $CFLAGS | sed -e "s/-g//"`
 
-
-dnl Run the sub-system configures.
+dnl Turn '-O2' to '-O3'.
 dnl
-AC_CONFIG_SUBDIRS(libargv)
-AC_CONFIG_SUBDIRS(libconfigfile)
-AC_CONFIG_SUBDIRS(libdebug)
-AC_CONFIG_SUBDIRS(liblists)
-AC_CONFIG_SUBDIRS(librfc822)
-AC_CONFIG_SUBDIRS(libtext)
+CFLAGS=`echo $CFLAGS | sed -e "s/-O2/-O3/"`
 
 dnl Write results.
 dnl