Firefox build fails on FreeBSD 12.1 amd64

[vladimirtt at gmail.com]

Hi Team,

since a couple of days i've been trying to build Firefox on my FreeBSD 12.1
amd64 box (FreeBSD 12.1-RELEASE-p10 GENERIC  amd64).

I've been trying to build through ports both the upstream version (82.0.2)
and the ESR version (78.4.0).

In both cases the build process fails with an error message like this:

/usr/ports/www/firefox-esr/work/.build/dist/system_wrappers/sys/eventfd.h:3:15:
fatal error:
      'sys/eventfd.h' file not found
#include_next <sys/eventfd.h>
              ^~~~~~~~~~~~~~~
1 error generated.

It is clear that "sys/eventfd.h" is not present on non-Linux systems, so i
assume something goes wrong during the configuration process.


I would appreciate it if you could help me to resolve this issue.

Regards,

Vladimir