AC_ARG_ENABLE(hcache, [ --enable-hcache Enable header caching],
[if test x$enableval = xyes; then
AC_DEFINE(USE_HCACHE, 1, [Enable header caching])
AC_ARG_ENABLE(hcache, [ --enable-hcache Enable header caching],
[if test x$enableval = xyes; then
AC_DEFINE(USE_HCACHE, 1, [Enable header caching])