• Texinfo

$ wget https://ftp.gnu.org/gnu/indent/indent-2.2.12.tar.gz
$ tar xvf indent-2.2.12.tar.gz
$ cd indent-2.2.12/
$ ./configure --prefix=/opt/indent/2.2.12
$ PATH=/opt/texinfo/6.7/bin:${PATH} \
  make
$ make install

$ export PATH==/opt/indent/2.2.12/bin:${PATH}
$ export LD_LIBRARY_PATH==/opt/indent/2.2.12/lib:${LD_LIBRARY_PATH}