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

    CMAKE_EXPORT_NO_PACKAGE_REGISTRY
    CMAKE_INSTALL_BINDIR
    CMAKE_INSTALL_DATAROOTDIR
    CMAKE_INSTALL_INCLUDEDIR
    CMAKE_INSTALL_LIBDIR
    CMAKE_INSTALL_LIBEXECDIR
    CMAKE_INSTALL_OLDINCLUDEDIR
    CMAKE_INSTALL_SBINDIR


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

    CMAKE_EXPORT_NO_PACKAGE_REGISTRY


/home/conan/w/cci_PR-4119/2/d08f3d21-5a6f-401b-bda5-260481a6d554/recipes/libsrtp/all/test_package/test_package.cpp:28:16: error: use of undeclared identifier 'nullptr'
        policy.next = nullptr;
                      ^
1 error generated.
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
ERROR: libsrtp/2.3.0 (test package): Error in build() method, line 12
	cmake.build()
	ConanException: Error 2 while executing cmake --build '/home/conan/w/cci_PR-4119/2/d08f3d21-5a6f-401b-bda5-260481a6d554/recipes/libsrtp/all/test_package/build/aa2bf3a9a774635b5268529f8d4a0d312f91f770' '--' '-j3'