CMake Warning:
  Manually-specified variables were not used by the project:

    CMAKE_EXPORT_NO_PACKAGE_REGISTRY


In file included from /home/conan/w/cci_PR-4212/3/54eb20a7-80f2-469b-a432-eddb948c9378/recipes/matplotlib-cpp/all/test_package/test_package.cpp:1:0:
/home/conan/w/cci_PR-4212/.conan/data/matplotlib-cpp/cci.20200422/_/_/package/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9/include/matplotlibcpp.h:17:33: fatal error: numpy/arrayobject.h: No such file or directory
 #  include <numpy/arrayobject.h>
                                 ^
compilation terminated.
make[2]: *** [CMakeFiles/test_package.dir/test_package.cpp.o] Error 1
make[1]: *** [CMakeFiles/test_package.dir/all] Error 2
make: *** [all] Error 2
matplotlib-cpp/cci.20200422: WARN: This conanfile has no build step
ERROR: matplotlib-cpp/cci.20200422 (test package): Error in build() method, line 12
	cmake.build()
	ConanException: Error 2 while executing cmake --build '/home/conan/w/cci_PR-4212/3/54eb20a7-80f2-469b-a432-eddb948c9378/recipes/matplotlib-cpp/all/test_package/build/dfae4d6ba682b8d9c5630c4c912db585c2a46c64' '--' '-j3'