AC_CHECK_HEADERS(openssl/crypto.h,[CLIENT_SSL=bin/client-ssl])
AC_CHECK_HEADERS(gnutls/gnutls.h,[CLIENT_GNUTLS=bin/client-gnutls])
AC_CHECK_HEADERS(openssl/crypto.h,[CLIENT_SSL=bin/client-ssl])
AC_CHECK_HEADERS(gnutls/gnutls.h,[CLIENT_GNUTLS=bin/client-gnutls])