Fallback to openssl if libgnutls-openssl isn't present

[GoogleCodeExporter]

Hi,

since 3.4.0 GnuTLS does't build libgnutls-openssl by default. I am getting the 
following errors when GnuTLS is present without the libgnutls-openssl library:

checking for MD5_Init in -lgnutls-openssl ... no
configure: error: Couldn't find gnutls-openssl library

Maybe falling back to openssl is a better choice than just fail?

Original issue reported on code.google.com by [email protected] on 10 Apr 2015 at 10:14

[GoogleCodeExporter]

Hello Felix,

As I can to see, "--without-gnutls" option can solve this issue. Unfortunately, 
I can't set this option by default, because debian based distributions need to 
be compiled with libgnutls-openssl-dev (for current unstable) or  with 
libgnutls-dev (for old debian distributions) mandatory. Openssl at this 
distributions built without some  functions used by boinctui.

By the way, Fedora based distribution need openssl-devel, and can't use 
libgnutls too. 

Original comment by [email protected] on 11 Apr 2015 at 7:22