Xorg taking too long to build on imac G5

[terry]

I have installed FreeBSD onto an imac G5 20” (using 
FreeBSD-12.0-RELEASE-powerpc-powerpc64-disc1.iso) and have started 
building xorg from source.

I used “make install” with ‘BATCH=yes’ to install the standard options 
and avoid halts in the build process.

However, the build process has been running now for 106 hours and is 
still running! My questions are:

1) Has the build process somehow got into a loop (is it possible to test 
for this?) and should I terminate the build?

2) If yes, what precautions can I take to avoid a repetition?

I have spent some time looked through the forum and mailing lists but 
have been unable to find answers so any suggestions or pointers to 
existing solutions would be welcomed.