Analyse following RPM build log snippet. Describe contents accurately, without speculation or suggestions for resolution.            
Your analysis must be as concise as possible, while keeping relevant information intact.
Snippet: 
checking whether g++ supports C++14 features by default... no
checking whether g++ supports C++14 features with -std=gnu++14... no
checking whether g++ supports C++14 features with -std=gnu++1y... no
checking whether g++ supports C++14 features with -std=c++14... no
checking whether g++ supports C++14 features with +std=c++14... no
checking whether g++ supports C++14 features with -h std=c++14... no
checking whether g++ supports C++14 features with -std=c++1y... no
checking whether g++ supports C++14 features with +std=c++1y... no
checking whether g++ supports C++14 features with -h std=c++1y... no
configure: error: *** A compiler with support for C++14 language features is required.
error: Bad exit status from /var/tmp/rpm-tmp.PJ0KwX (%build)
    Bad exit status from /var/tmp/rpm-tmp.PJ0KwX (%build)
Description of failures of build