[SOLVED] FreeCAD 0.13 fails to compile on Slackware 14.1

[however]

Hello All,

it seems that the problem was resolved with a new install of the following development packages:
gcc
gcc-gcc++
cmake

After, I compiled 'eigen3' successfully which then resulted in successful build and install of FreeCAD0.13 (unfortunately the latest beta version offered via the git link above, returns an 'Invalid or Corrupted file' message).

Anyhow, all is good now so that I may start studying this beast.

Thank you All and I hope that this may be helpful to any Slack users.

Regards,