AC_ARG_ENABLE(zlib, AS_HELP_STRING([--disable-zlib], [Disable optional ZLIB support]))
if test "x$enable_zlib" != "xno"; then
PKG_CHECK_MODULES(ZLIB, [ zlib ],
AC_ARG_ENABLE(zlib, AS_HELP_STRING([--disable-zlib], [Disable optional ZLIB support]))
if test "x$enable_zlib" != "xno"; then
PKG_CHECK_MODULES(ZLIB, [ zlib ],