Expat.xs:12:19: fatal error: expat.h: No such file or directory

$ sudo apt-get install libexpat1-dev

'YAML' not installed

$ cpan YAML

Can't locate XML/Parser.pm in @INC

Source: https://github.com/Rub21/osm_visualization/issues/1

$ sudo perl -e shell -MCPAN
[CPAN] install XML::Parser

***: /usr/lib/x86_64-linux-gnu/libstdc++.so.6: version `GLIBCXX_3.4.18' not found (required by ***)

Source: http://stackoverflow.com/questions/19386651/how-to-fix-usr-lib-libstdc-so-6-version-glibcxx-3-4-15-not-found

$ sudo add-apt-repository ppa:ubuntu-toolchain-r/test
$ sudo apt-get update
$ sudo apt-get install libstdc++6-4.7-dev

'repo' doesn't work

echo $PATH
find / -type f -name repo -exec ls -l {} \;

My and very likely the solution is:
rm ~/bin/repo