installing wget 1.13 from source on Centos 5.7 the configure command was not happy:
checking for main in -lgnutls... no configure: error: --with-ssl was given, but GNUTLS is not available.
It turns out the solution is simple:
./configure --with-ssl=openssl
did the trick.
At first I thought that a “yum install gnutls-devel” might help. The ./configure part indeed finished after the install of the developer package, but the actual make still failed:
gnutls.o: In function `ssl_connect_wget': gnutls.c:(.text+0x3f1): undefined reference to `gnutls_priority_set_direct' gnutls.c:(.text+0x481): undefined reference to `gnutls_priority_set_direct' collect2: ld returned 1 exit status
Configuring with the openssl option made everything work very smoothly …