Major problems installing MiCall-Lite on CentOS 7

[ArtPoon]

• installing Python3 requires configuring yum to use additional repository
• Python3 is installed to /opt/rh/rh-python36/root/bin, so user has to reconfigure $PATH
• setup.py script fails to find Python3 include file, which is located at /opt/rh/rh-python36/root/usr/include/python3.6m:

  micall/alignment/src/_gotoh2.c:1:20: fatal error: Python.h: No such file or directory
 #include <Python.h>

• it also fails to find many other include files at this same path
• GCC compiler in CentOS 7 complains about local variable declaration in for loops:

micall/alignment/src/_gotoh2.c: In function ‘map_ascii_to_alphabet’:
micall/alignment/src/_gotoh2.c:73:5: error: ‘for’ loop initial declarations are only allowed in C99 mode
     for (int i = 0; i < 256; i++) {
     ^
micall/alignment/src/_gotoh2.c:73:5: note: use option -std=c99 or -std=gnu99 to compile your code

[ArtPoon]

Also see issue #9

[donkirkby]

It sounds like Python 3 might be installed using the module system. We had some headaches with Slurm and Singularity where we had to make sure the right modules were loaded. Use man module for all the details, but module available should show you whether Python 3 is using modules.

[ArtPoon]

Thanks for the tip @donkirkby !