See http://lists.busybox.net/pipermail/buildroot/2010-April/033691.html
This has been fixed by: commit bd387486ad871164e4fbe86eb6570775086acfbe Author: Sven Neumann <s.neumann@raumfeld.com> Date: Thu Aug 11 11:57:41 2011 +0200 libsoup: add option to enable HTTPS (SSL) support By selecting BR2_PACKAGE_LIBSOUP_SSL the gnutls package is selected and libsoup will be compiled with SSL support. [Peter: pass --with-libgcrypt-prefix so configure finds it] Signed-off-by: Sven Neumann <s.neumann@raumfeld.com> Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>