New comment by Johnnynator on void-packages repository

https://github.com/void-linux/void-packages/pull/30143#issuecomment-818500038

Comment:
```
CMake Deprecation Warning at cmake/modules/SetKDbCMakePolicies.cmake:12 (cmake_policy):
  The OLD behavior for policy CMP0059 will be removed from a future version
  of CMake.

  The cmake-policies(7) manual explains that the OLD behaviors of all
  policies are deprecated and that a policy should be set to OLD only under
  specific short-term circumstances.  Projects should be ported to the NEW
  behavior and not rely on setting a policy to OLD.
Call Stack (most recent call first):
  CMakeLists.txt:4 (include)


-- The C compiler identification is GNU 10.2.1
-- The CXX compiler identification is GNU 10.2.1
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working C compiler: /builddir/.xbps-kdb/wrappers/aarch64-linux-gnu-gcc - skipped
-- Detecting C compile features
-- Detecting C compile features - done
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Check for working CXX compiler: /builddir/.xbps-kdb/wrappers/aarch64-linux-gnu-c++ - skipped
-- Detecting CXX compile features
-- Detecting CXX compile features - done
CMake Warning (dev) at cmake/modules/KDbAddSimpleOption.cmake:29 (option):
  Policy CMP0077 is not set: option() honors normal variables.  Run "cmake
  --help-policy CMP0077" for policy details.  Use the cmake_policy command to
  set the policy and suppress this warning.

  For compatibility with older versions of CMake, option is clearing the
  normal variable 'BUILD_COVERAGE'.
Call Stack (most recent call first):
  cmake/modules/KDbAddTests.cmake:35 (simple_option)
  CMakeLists.txt:10 (kdb_add_tests)
This warning is for project developers.  Use -Wno-dev to suppress it.

-- Installing in the same prefix as Qt, adopting their path scheme.
-- Looking for __GLIBC__
-- Looking for __GLIBC__ - found
-- Performing Test _OFFT_IS_64BIT
-- Performing Test _OFFT_IS_64BIT - Success
-- Performing Test HAVE_DATE_TIME
-- Performing Test HAVE_DATE_TIME - Success
-- Found KF5CoreAddons: /usr/aarch64-linux-gnu/usr/lib64/cmake/KF5CoreAddons/KF5CoreAddonsConfig.cmake (found version "5.81.0") 
-- Found KF5: success (found suitable version "5.81.0", minimum required is "5.16.0") found components: CoreAddons 
-- Found the following ICU libraries:
--   i18n (required)
--   uc (required)
-- Found ICU: /usr/aarch64-linux-gnu/usr/include (found version "67.1") 
-- Looking for unistd.h
-- Looking for unistd.h - found
-- Found PythonInterp: /usr/aarch64-linux-gnu/usr/bin/python2 (Required is at least version "2.6") 
-- Creating shared data class in KDbConnectionData.h from KDbConnectionData.shared.h
-- Creating shared data class in KDbObject.h from KDbObject.shared.h
-- Creating shared data class in KDbQuerySchemaParameter.h from KDbQuerySchemaParameter.shared.h
-- Creating shared data class in KDbResult.h from KDbResult.shared.h
-- Creating shared data class in KDbSelectStatementOptions.h from KDbSelectStatementOptions.shared.h
-- Creating shared data class in KDbVersionInfo.h from KDbVersionInfo.shared.h
-- Performing Test COMPILER_HAS_HIDDEN_VISIBILITY
-- Performing Test COMPILER_HAS_HIDDEN_VISIBILITY - Success
-- Performing Test COMPILER_HAS_HIDDEN_INLINE_VISIBILITY
-- Performing Test COMPILER_HAS_HIDDEN_INLINE_VISIBILITY - Success
-- Performing Test COMPILER_HAS_DEPRECATED_ATTR
-- Performing Test COMPILER_HAS_DEPRECATED_ATTR - Success
CMake Error at cmake/modules/KDbGenerateHeaders.cmake:170 (message):
  Could not find "/builddir/kdb-3.2.0/build/src/KDbConnectionData.h"
Call Stack (most recent call first):
  src/CMakeLists.txt:402 (ecm_generate_headers)
```
It seems like kdb-3.2.0 fails to build for aarch64 cross (and maybe more)

Edit: Dunno what happened there, it didn't fail like that on subsequent runs.