AC_SUBST(CARES_LIBS)

AC_SUBST(CARES_CFLAGS)

PKG_CHECK_MODULES([CARES], [libcares], [found_libcares=yes], [found_libcares=no])

SSS_AC_EXPAND_LIB_DIR()

AS_IF([test x"$found_libcares" != xyes],

[AC_CHECK_HEADERS([ares.h],

[AC_CHECK_LIB([cares],

[ares_init],

[CARES_LIBS="-L$sss_extra_libdir -lcares"],

[AC_MSG_ERROR([No usable c-ares library found])],

[-L$sss_extra_libdir])],

[AC_MSG_ERROR([c-ares header files are not installed])])]

)

dnl Check if this particular version of c-ares supports the generic ares_free_data function

AC_CHECK_LIB([cares],

[ares_free_data],

[AC_DEFINE([HAVE_ARES_DATA], 1, [Does c-ares have ares_free_data()?])

],

[ares_data=1],

[$CARES_LIBS]

)

AM_CONDITIONAL(BUILD_ARES_DATA, test x$ares_data = x1)

dnl Check if this particular version of c-ares support the new TTL structures

AC_CHECK_TYPES([struct ares_addrttl, struct ares_addr6ttl], [], [], [#include <ares.h>])