Firefox build failure, was Re: Silent stoppage building www/chromium

[bob prohaska]

On Sun, Aug 30, 2020 at 09:40:21PM +0000, Marcel Bischoff wrote:
> Firefox has Rust as a dependency. In the past I have found that the build process for the latter easily overwhelms lean systems with little physical RAM. Regardless of swap space, quite unlike most other ports.
> 

My error seems to have been using -j2 with make. Re-run using simply
make -DBATCH MAKE_JOBS_UNSAFE=yes 
compilation kept going until reporting
gmake[4]: Leaving directory '/usr/ports/www/firefox/work/.build/toolkit/library/rust'
gmake[3]: Leaving directory '/usr/ports/www/firefox/work/.build'
gmake[2]: Leaving directory '/usr/ports/www/firefox/work/.build'
gmake[1]: Leaving directory '/usr/ports/www/firefox/work/.build'
*** Error code 1

but no further details are offered. It's been suggested to obtain
a backtrace, but looking at the man page that seems to require some
changes to the source, which I don't know how to do.

If somebody can suggest reading material I'll give it a try.

Thanks for replying,

bob prohaska