gnutls

When I try to configure GnuTLS I'm getting the error that Libnettle 3.4 was not found. I've nettle 3.4.1-1 installed and the library files are present in /usr/lib. Even when I specify the environment variable NETTLE_LIBS directly ( export NETTLE_LIBS="-L/usr/lib -R/usr/lib -lnettle" ) it always throws out that message. In the config.log is following more concrete message: Package dependency requirement 'nettle >= 3.4.1' could not be satisfied. Package 'nettle' has version '3.4', required version is '>= 3.4.1' What I'am missing here? 来源： https://stackoverflow.com/questions/53790710/gnutls

I am very new to linux platform and I want to extract gnutls for ubuntu. If I do, $ls then, it will show these files below. gnutls-3.2.1.tar.lz gnutls-3.2.1.tar.lz.sig gnutls-3.2.1.tar.xz gnutls-3.2.1.tar.xz.sig When I give command, $ tar -xvf gnutls-3.2.1.tar.xz I get output, tar: xz: Cannot exec: No such file or directory tar: Error is not recoverable: exiting now tar: Child returned status 2 tar: Exiting with failure status due to previous errors I want to extract these files. Why there are two types of formats given? - xz and lz Why there are signature files? - .sig How to verify it? I