=> Bootstrap dependency digest>=20010302: found digest-20190127
===> Skipping vulnerability checks.
WARNING: No /var/db/pkg/pkg-vulnerabilities file found.
WARNING: To fix run: `/usr/sbin/pkg_admin -K /var/db/pkg fetch-pkg-vulnerabilities'.
=> Checksum SHA1 OK for flatbuffers-1.9.0.tar.gz
=> Checksum RMD160 OK for flatbuffers-1.9.0.tar.gz
=> Checksum SHA512 OK for flatbuffers-1.9.0.tar.gz
===> Installing dependencies for flatbuffers-1.9.0
=> Tool dependency cmake>=2.8.1nb1: found cmake-3.17.0
=> Tool dependency checkperms>=1.1: found checkperms-1.12
=> Build dependency cwrappers>=20150314: found cwrappers-20180325
===> Overriding tools for flatbuffers-1.9.0
===> Extracting for flatbuffers-1.9.0
===> Patching for flatbuffers-1.9.0
=> Applying pkgsrc patches for flatbuffers-1.9.0
=> Verifying /data/pkgsrc/devel/flatbuffers/patches/patch-CMakeLists.txt
=> Applying pkgsrc patch /data/pkgsrc/devel/flatbuffers/patches/patch-CMakeLists.txt
Hmm...  Looks like a unified diff to me...
The text leading up to this was:
--------------------------
|$NetBSD: patch-CMakeLists.txt,v 1.1 2018/01/07 20:57:15 joerg Exp $
|
|--- CMakeLists.txt.orig	2018-01-07 18:01:55.927624647 +0000
|+++ CMakeLists.txt
--------------------------
Patching file CMakeLists.txt using Plan A...
Hunk #1 succeeded at 137 (offset 5 lines).
done
===> Creating toolchain wrappers for flatbuffers-1.9.0
===> Configuring for flatbuffers-1.9.0
=> Fixing CMAKE_MODULE_PATH in CMakeLists.txt
INFO: [subst.mk:cmake] Nothing changed in ./CMakeLists.txt.
=> Checking for portability problems in extracted files
-- The C compiler identification is Clang 10.0.10
-- The CXX compiler identification is Clang 10.0.10
CMake Warning (dev) at /usr/pkg/share/cmake-3.17/Modules/Platform/NetBSD.cmake:15 (include):
  File /usr/pkg/share/cmake-3.17/Modules/Platform/NetBSD.cmake includes
  /data/scratch/devel/flatbuffers/work/.buildlink/cmake-Modules/Platform/UnixPaths.cmake
  (found via CMAKE_MODULE_PATH) which shadows
  /usr/pkg/share/cmake-3.17/Modules/Platform/UnixPaths.cmake.  This may cause
  errors later on .

  Policy CMP0017 is not set: Prefer files from the CMake module directory
  when including from there.  Run "cmake --help-policy CMP0017" for policy
  details.  Use the cmake_policy command to set the policy and suppress this
  warning.
Call Stack (most recent call first):
  /usr/pkg/share/cmake-3.17/Modules/CMakeSystemSpecificInformation.cmake:26 (include)
  CMakeLists.txt:3 (project)
This warning is for project developers.  Use -Wno-dev to suppress it.

CMake Warning (dev) at /usr/pkg/share/cmake-3.17/Modules/Platform/NetBSD.cmake:15 (include):
  File /usr/pkg/share/cmake-3.17/Modules/Platform/NetBSD.cmake includes
  /data/scratch/devel/flatbuffers/work/.buildlink/cmake-Modules/Platform/UnixPaths.cmake
  (found via CMAKE_MODULE_PATH) which shadows
  /usr/pkg/share/cmake-3.17/Modules/Platform/UnixPaths.cmake.  This may cause
  errors later on .

  Policy CMP0017 is not set: Prefer files from the CMake module directory
  when including from there.  Run "cmake --help-policy CMP0017" for policy
  details.  Use the cmake_policy command to set the policy and suppress this
  warning.
Call Stack (most recent call first):
  /usr/pkg/share/cmake-3.17/Modules/CMakeCInformation.cmake:66 (include)
  CMakeLists.txt:3 (project)
This warning is for project developers.  Use -Wno-dev to suppress it.

-- Check for working C compiler: /data/scratch/devel/flatbuffers/work/.cwrapper/bin/clang
-- Check for working C compiler: /data/scratch/devel/flatbuffers/work/.cwrapper/bin/clang - works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Detecting C compile features
-- Detecting C compile features - done
CMake Warning (dev) at /usr/pkg/share/cmake-3.17/Modules/Platform/NetBSD.cmake:15 (include):
  File /usr/pkg/share/cmake-3.17/Modules/Platform/NetBSD.cmake includes
  /data/scratch/devel/flatbuffers/work/.buildlink/cmake-Modules/Platform/UnixPaths.cmake
  (found via CMAKE_MODULE_PATH) which shadows
  /usr/pkg/share/cmake-3.17/Modules/Platform/UnixPaths.cmake.  This may cause
  errors later on .

  Policy CMP0017 is not set: Prefer files from the CMake module directory
  when including from there.  Run "cmake --help-policy CMP0017" for policy
  details.  Use the cmake_policy command to set the policy and suppress this
  warning.
Call Stack (most recent call first):
  /usr/pkg/share/cmake-3.17/Modules/CMakeCXXInformation.cmake:65 (include)
  CMakeLists.txt:3 (project)
This warning is for project developers.  Use -Wno-dev to suppress it.

-- Check for working CXX compiler: /data/scratch/devel/flatbuffers/work/.cwrapper/bin/clang++
-- Check for working CXX compiler: /data/scratch/devel/flatbuffers/work/.cwrapper/bin/clang++ - works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Configuring done
-- Generating done
-- Build files have been written to: /data/scratch/devel/flatbuffers/work/flatbuffers-1.9.0
=> Rewrite cmake Dependencies files