FreeBSD, make, USE_PACKAGE_DEPENDS

                                                               ┬┬┬┬┬┬┬┬┬┬┬┬┬┬┬┬┬┬┬┬┬┬┬┬┬┬┬ spectacle-20.12.3_1 ┬┬┬┬┬┬┬┬┬┬┬┬┬┬┬┬┬┬┬┬┬┬┬┬┬┬┬┬┬┬
                                                                7≠£££££────£££££££££££££££££££££££££££££££££££££££££££££££££££££££££££££££££┐7
                                                                7≠+[x] DOCS  Build and/or install documentation                             │7
                                                                7£──────────────────────────────────────────────────────────────────────────┘7
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Segmentation fault (core dumped)
===> Options unchanged
===>  License LGPL20 accepted by the user
===>   spectacle-20.12.3_1 depends on file: /usr/local/sbin/pkg - found
===> Fetching all distfiles required by spectacle-20.12.3_1 for building
===>  Extracting for spectacle-20.12.3_1
=> SHA256 Checksum OK for KDE/release-service/20.12.3/spectacle-20.12.3.tar.xz.
===>  Patching for spectacle-20.12.3_1
===>  Applying FreeBSD patches for spectacle-20.12.3_1 from /usr/ports/graphics/spectacle/files
===>   spectacle-20.12.3_1 depends on file: /usr/local/bin/cmake - found
===>   spectacle-20.12.3_1 depends on executable: ninja - not found
===>  License APACHE20 accepted by the user
===>   ninja-1.10.2,2 depends on file: /usr/local/sbin/pkg - found
===> Fetching all distfiles required by ninja-1.10.2,2 for building
===>  Extracting for ninja-1.10.2,2
=> SHA256 Checksum OK for ninja-build-ninja-v1.10.2_GH0.tar.gz.
===>  Patching for ninja-1.10.2,2
===>   ninja-1.10.2,2 depends on file: /usr/local/bin/python3.7 - found
===>  Configuring for ninja-1.10.2,2
===>  Building for ninja-1.10.2,2
bootstrapping ninja...
warning: A compatible version of re2c (>= 0.11.3) was not found; changes to src/*.in.cc will not affect your build.
^CTraceback (most recent call last):
  File "configure.py", line 519, in <module>
    objs += cxx(name, variables=cxxvariables)
  File "configure.py", line 287, in cxx
    return n.build(built(name + objext), 'cxx', src(name + '.cc'), **kwargs)
  File "configure.py", line 169, in build
    self._run_command(self._expand(cmd, local_vars))
  File "configure.py", line 194, in _run_command
    subprocess.check_call(cmdline, shell=True)
  File "/usr/local/lib/python3.7/subprocess.py", line 358, in check_call
    retcode = call(*popenargs, **kwargs)
  File "/usr/local/lib/python3.7/subprocess.py", line 341, in call
    return p.wait(timeout=timeout)
  File "/usr/local/lib/python3.7/subprocess.py", line 1019, in wait
    return self._wait(timeout=timeout)
  File "/usr/local/lib/python3.7/subprocess.py", line 1653, in _wait
    (pid, sts) = self._try_wait(0)
  File "/usr/local/lib/python3.7/subprocess.py", line 1611, in _try_wait
    (pid, sts) = os.waitpid(self.pid, wait_flags)
KeyboardInterrupt
*** Error code 1
*** Signal 2
*** Signal 2
*** Signal 2

root@mowa219-gjp4-8570p:/usr/ports/graphics/spectacle # pkg search ninja
irc-ninja-1.5.8.1              Another ircII based irc client
ninja-1.10.2,2                 Small build system closest in spirit to Make
sqlninja-0.2.6                 Sql Server exploit toolkit
root@mowa219-gjp4-8570p:/usr/ports/graphics/spectacle # make clean
===>  Cleaning for ninja-1.10.2,2
===>  Cleaning for spectacle-20.12.3_1
root@mowa219-gjp4-8570p:/usr/ports/graphics/spectacle # echo $USE_PACKAGE_DEPENDS
1
root@mowa219-gjp4-8570p:/usr/ports/graphics/spectacle #