Alpinelinux build for ppc64le arch fails

[andypost]

Just commited package and got fail to build for ppc64le arch alpinelinux/aports#12174 (comment) (build logs will live some time)

The error itself is

/home/buildozer/aports/testing/php7-pdlib/src/pdlib-1.0/src/face_recognition.cc:37:23:   required from here
/usr/include/dlib/dnn/core.h:1025:37: error: cannot convert 'bool' to '__vector(4) __bool int' in initialization
 1025 |             this_layer_setup_called(false),
      |                                     ^~~~~
      |                                     |
      |                                     bool
/usr/include/dlib/dnn/core.h:1026:37: error: cannot convert 'bool' to '__vector(4) __bool int' in initialization
 1026 |             gradient_input_is_stale(true),
      |                                     ^~~~
      |                                     |
      |                                     bool
/usr/include/dlib/dnn/core.h:1027:52: error: cannot convert 'bool' to '__vector(4) __bool int' in initialization
 1027 |             get_output_and_gradient_input_disabled(false),
      |                                                    ^~~~~
      |                                                    |
      |                                                    bool
In file included from /usr/include/dlib/sequence.h:7,
                 from /usr/include/dlib/optimization/optimization_search_strategies.h:11,
                 from /usr/include/dlib/optimization/optimization.h:9,
                 from /usr/include/dlib/optimization.h:6,
                 from /usr/include/dlib/statistics/vector_normalizer_frobmetric.h:8,
                 from /usr/include/dlib/statistics.h:13,
                 from /usr/include/dlib/image_transforms/assign_image.h:8,
                 from /usr/include/dlib/image_transforms/spatial_filtering.h:15,
                 from /usr/include/dlib/image_processing/scan_image.h:13,
                 from /usr/include/dlib/image_processing.h:11,
                 from /usr/include/dlib/dnn/input.h:10,
                 from /usr/include/dlib/dnn.h:13,
                 from /home/buildozer/aports/testing/php7-pdlib/src/pdlib-1.0/src/face_recognition.h:8,
                 from /home/buildozer/aports/testing/php7-pdlib/src/pdlib-1.0/src/face_recognition.cc:2:
/usr/include/dlib/sequence/sequence_kernel_2.h: In instantiation of 'void dlib::sequence_kernel_2<T, mem_manager>::reset() const [with T = dlib::lbfgs_search_strategy::data_helper; mem_manager = dlib::memory_manager_stateless_kernel_1<char>]':
/usr/include/dlib/sequence/sequence_kernel_2.h:496:10:   required from here
/usr/include/dlib/sequence/sequence_kernel_2.h:500:19: error: cannot convert 'bool' to '__vector(4) __bool int' in assignment
  500 |         at_start_ = true;
      |         ~~~~~~~~~~^~~~~~
/usr/include/dlib/sequence/sequence_kernel_2.h: In instantiation of 'unsigned int dlib::sequence_kernel_2<T, mem_manager>::current_element_valid() const [with T = dlib::lbfgs_search_strategy::data_helper; mem_manager = dlib::memory_manager_stateless_kernel_1<char>]':
/usr/include/dlib/sequence/sequence_kernel_2.h:510:10:   required from here
/usr/include/dlib/sequence/sequence_kernel_2.h:514:41: error: cannot convert 'bool' to '__vector(4) __bool int' in return
  514 |         return (current_enumeration_node!=0);
      |                ~~~~~~~~~~~~~~~~~~~~~~~~~^~~~
      |                                         |
      |                                         bool
/usr/include/dlib/sequence/sequence_kernel_2.h: In instantiation of 'unsigned int dlib::sequence_kernel_2<T, mem_manager>::move_next() const [with T = dlib::lbfgs_search_strategy::data_helper; mem_manager = dlib::memory_manager_stateless_kernel_1<char>]':
/usr/include/dlib/sequence/sequence_kernel_2.h:549:10:   required from here
/usr/include/dlib/sequence/sequence_kernel_2.h:573:19: error: cannot convert 'bool' to '__vector(4) __bool int' in assignment
  573 |         at_start_ = false;
      |         ~~~~~~~~~~^~~~~~~
/usr/include/dlib/sequence/sequence_kernel_2.h:574:41: error: cannot convert 'bool' to '__vector(4) __bool int' in return
  574 |         return (current_enumeration_node!=0);
      |                ~~~~~~~~~~~~~~~~~~~~~~~~~^~~~
      |                                         |
      |                                         bool
make: *** [Makefile:202: src/face_recognition.lo] Error 1