[GAP Forum] Build problem

[Bill Maier]

I'm on Linux Mint 64-bit version 18 and am trying to build a local version
of GAP from the latest
source code. I am a software engineer and would like to start contributing
to GAP. I pulled code
using "git clone https://github.com/gap-system/gap.git". Ran .configure and
then make
which had no problems.

But then when I run bin/gap.sh, the system reports this:

bmaier at mint-desktop ~/Packages/github/gap/bin $ ./gap.sh
 ┌───────┐   GAP v4.8.4-702-g80a0966 of 2016-08-16 14:06:52 (CDT)
 │  GAP  │   http://www.gap-system.org
 └───────┘   Architecture: x86_64-pc-linux-gnu-gcc-default64
 Libs used:  gmp
 Loading the library and packages ...
#I  gapdoc package is not available. Check that the name is correct
#I  and it is present in one of the GAP root directories (see '??RootPaths')
#I  GAP: needed package gapdoc cannot be loaded
Error, failed to load needed package `gapdoc' (version >= 1.2) at
/home/bmaier/Packages/github/gap/lib/package.gi:1836 called from
func(  ); at /home/bmaier/Packages/github/gap/lib/system.g:159 called from
<function "CallAndInstallPostRestore">( <arguments> )
 called from read-eval loop at
/home/bmaier/Packages/github/gap/lib/init.g:770

It still actually runs most simple commands. However when
I try to run the command "Factorial(8);" I get this:

Error, Factorial: function is not yet defined in
  <compiled or corrupted statement>  called from
func(  ); at /home/bmaier/Packages/github/gap/lib/system.g:159 called from
<function "CallAndInstallPostRestore">( <arguments> )
 called from read-eval loop at *errin*:2

Can someone tell me what is wrong?

-Bill