On Mon, Dec 6, 2010 at 6:39 PM, Wes Hardaker <
harda...@users.sourceforge.net> wrote:
>
> The following checks for a minimum macro/function required for the DTLS
> code. I'd like to apply it for 5.6.1 (as well as trunk):
>
> diff --git a/net-snmp/configure.d/config_os_functions
> b/net-snmp/configure.d/config_os_functions
> index 856e944..25576da 100644
> --- a/net-snmp/configure.d/config_os_functions
> +++ b/net-snmp/configure.d/config_os_functions
> @@ -294,3 +294,24 @@ esac
> AC_MSG_RESULT($netsnmp_PRI32)
> AC_DEFINE_UNQUOTED([NETSNMP_PRI32], ["$netsnmp_PRI32"],
> [Size prefix to use to printf a uint32_t])
> +
> +# check to see if the openssl is good enough for DTLS
> +# (BIO_dgram_get_peer is a macro, not a true function)
> +if echo " $transport_result_list " | $GREP "DTLS" > /dev/null; then
> + AC_CACHE_VAL(
> + ac_cv_bio_dgram_get_peer,
> + AC_MSG_CHECKING([[for BIO_dgram_get_peer]])
> + [
> + oldLIBS="$LIBS"
> + LIBS="$LIBS -lcrypto"
> + AC_TRY_LINK(
> + [#include <openssl/bio.h>],
> + [BIO_dgram_get_peer(NULL, NULL);],,
> + AC_MSG_ERROR([DTLS support requires a newer version of OpenSSL]))
> +
> + LIBS="$oldLIBS"
> + ]
> + AC_MSG_RESULT(yes)
> + )
> +fi
> +
>
Hello Wes,
There is probably a very good reason why you have used AC_TRY_LINK() instead
of AC_CHECK_FUNC() ?
Bart.
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