PHP_ARG_ENABLE([filter], [whether to enable input filter support], [AS_HELP_STRING([--disable-filter], [Disable input filter support])], [yes]) if test "$PHP_FILTER" != "no"; then PHP_NEW_EXTENSION(filter, filter.c sanitizing_filters.c logical_filters.c callback_filter.c, $ext_shared,, -DZEND_ENABLE_STATIC_TSRMLS_CACHE=1) PHP_SUBST(FILTER_SHARED_LIBADD) PHP_INSTALL_HEADERS([ext/filter/php_filter.h]) PHP_ADD_EXTENSION_DEP(filter, pcre) fi