Issues found so far when removing -rc2 from the version of openwrt:

[SOLVED] The ccache version we were using (3.1.9) didn't have a file on OpenWRT source anymore. I updated the version to 3.1.11 and the md5 hash accordingly
something about the following checkfor git-core in include/prereq-build lines 146-147 fails:
```
$(eval $(call SetupHostCommand,git,Please install Git (git-core) >= 1.6.5, \
    git clone 2>&1 | grep -- --recursive))
```
even though when I run git --version I get 2.7.2. Commenting it out lets the build continue.
Line 27 of openwrt/tools/automake/Makefile throws a regex error that I'm having trouble debugging: mostly because commenting it out seems to allowed the build to continue and then even when I un-commented it the build ran past that point.
Currently dealing with the following error, I think I'm getting close to the end:
Can't locate /home/nodebotanist/openwrt-tessel/openwrt/build_dir/host/automake-1.15/bin/aclocal at /home/nodebotanist/openwrt-tessel/openwrt/build_dir/host/automake-1.15/t/wrap/aclocal-1.15 line 31. Makefile:2470: recipe for target 'aclocal.m4' failed

I'd like to figure out what the issue is and fix it rather than leave these commented out. Looking into it.

Build system fails #83

Description