dnl Check whether the AI_ADDRCONFIG flag can be used with getaddrinfo

dnl Taken from APR ...

AC_DEFUN([APR_CHECK_GETADDRINFO_ADDRCONFIG], [

AC_CACHE_CHECK(for working AI_ADDRCONFIG, apr_cv_gai_addrconfig, [

AC_TRY_RUN([

#ifdef HAVE_NETDB_H

#include <netdb.h>

#endif

#ifdef HAVE_STRING_H

#include <string.h>

#endif

#ifdef HAVE_SYS_TYPES_H

#include <sys/types.h>

#endif

#ifdef HAVE_SYS_SOCKET_H

#include <sys/socket.h>

#endif

int main(int argc, char **argv) {

struct addrinfo hints, *ai;

memset(&hints, 0, sizeof(hints));

hints.ai_family = AF_UNSPEC;

hints.ai_socktype = SOCK_STREAM;

hints.ai_flags = AI_ADDRCONFIG;

return getaddrinfo("localhost", NULL, &hints, &ai) != 0;

}], [apr_cv_gai_addrconfig=yes],

[apr_cv_gai_addrconfig=no],

[apr_cv_gai_addrconfig=no])])

if test $apr_cv_gai_addrconfig = yes; then

AC_DEFINE(HAVE_GAI_ADDRCONFIG, 1, [Define if getaddrinfo accepts the AI_ADDRCONFIG flag])

fi

])