• http://stackoverflow.com/questions/6759315/how-does-configure-file-find-the-correct-cross-compile-tools/6901739#6901739 # android
• http://packages.qa.debian.org/a/autoconf.html
• http://autotools.io/#
• https://www.amazon.com/Autotools-Practioners-Autoconf-Automake-Libtool/dp/1593272065#

configure: WARNING: using cross tools not prefixed with host triplet

configure.ac:27: error: required file 'build-aux/compile' not found

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