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

    CMAKE_EXPORT_NO_PACKAGE_REGISTRY


In file included from /usr/include/c++/4.9/array:35:0,
                 from /home/conan/w/cci_PR-4212/.conan/data/matplotlib-cpp/cci.20210111/_/_/package/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9/include/matplotlibcpp.h:9,
                 from /home/conan/w/cci_PR-4212/1/1272f3bc-fa2a-45d8-8e06-f4b5ad673845/recipes/matplotlib-cpp/all/test_package/test_package.cpp:1:
/usr/include/c++/4.9/bits/c++0x_warning.h:32:2: error: #error This file requires compiler and library support for the ISO C++ 2011 standard. This support is currently experimental, and must be enabled with the -std=c++11 or -std=gnu++11 compiler options.
 #error This file requires compiler and library support for the \
  ^
In file included from /home/conan/w/cci_PR-4212/1/1272f3bc-fa2a-45d8-8e06-f4b5ad673845/recipes/matplotlib-cpp/all/test_package/test_package.cpp:1:0:
/home/conan/w/cci_PR-4212/.conan/data/matplotlib-cpp/cci.20210111/_/_/package/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9/include/matplotlibcpp.h:19:33: 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.20210111: WARN: This conanfile has no build step
ERROR: matplotlib-cpp/cci.20210111 (test package): Error in build() method, line 12
	cmake.build()
	ConanException: Error 2 while executing cmake --build '/home/conan/w/cci_PR-4212/1/1272f3bc-fa2a-45d8-8e06-f4b5ad673845/recipes/matplotlib-cpp/all/test_package/build/dfae4d6ba682b8d9c5630c4c912db585c2a46c64' '--' '-j3'