Prior to this change, generation of the character lookup table could use
Python 2 or Python 3, depending on what the first instance of python in
the PATH pointed to. On most systems, python is a symbolic link to
python2.7. However, given that Python 2 is EOL, it makes sense to switch
the code to use Python 3 now, rather than later.
This change updates the requirements to use Python 3.6 or later, and
updates the Makefile to invoke the script with the detected python
binary, rather than relying on the shebang to use the system Python.
Prior to this change, the assumption in all shell and Python scripts was
that the Bash interpreter would always be available at `/bin/bash`, and
Python would always be available at `/usr/bin/python`. However, on a VM
running FreeBSD, installing bash and python using the pkg command
installs them under /usr/local/bin.
This change updates the paths to use /usr/bin/env in the shebang. While
this is not a standard path either, it is more likely to be available at
this location.
This change also updates the find command in common_infra.sh to use
`-perm -+x` in lieu of `-executable`, which is not a condition defined
by POSIX. This allows running the tests on BSD.
This change adds additional compiler warnings as detected by the
autoconf archive. Because the code is susceptible to these additional
warnings, disable treating warnings as errors for now, until we can fix
the warnings.
This disables the include file list and dependency graph in the file
view. In addition, the groups are updated to include `libx52` in their
names, to avoid any potential conflict.
[skip ci]
nirenjan