AC_DEFUN([PDNS_CHECK_LUA_HPP],[
AC_REQUIRE([PDNS_WITH_LUA])
AS_IF([test "x$LUAPC" != "x" ], [
+ OLD_CPPFLAGS="$CPPFLAGS"
+ CPPFLAGS="$CPPFLAGS $LUA_CFLAGS"
AC_CHECK_HEADER([lua.hpp], [ have_lua_hpp=y ])
+ CPPFLAGS="$OLD_CPPFLAGS"
])
AM_CONDITIONAL([HAVE_LUA_HPP], [ test x"$have_lua_hpp" = "xy" ])
])