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

    CMAKE_EXPORT_NO_PACKAGE_REGISTRY


/home/conan/w/cci_PR-4179/.conan/data/proj/7.2.1/_/_/build/c6b06ddc66defaa6ea7c9c9fb36b18ad1b620eba/source_subfolder/src/mutex.cpp:106:32: warning: unknown warning group '-Wzero-as-null-pointer-constant', ignored [-Wunknown-pragmas]
#pragma GCC diagnostic ignored "-Wzero-as-null-pointer-constant"
                               ^
1 warning generated.
CMake Warning:
  Manually-specified variables were not used by the project:

    CMAKE_EXPORT_NO_PACKAGE_REGISTRY


/home/conan/w/cci_PR-4179/1/7de62d42-de9c-4e50-987a-2e5d2f3f1413/recipes/proj/all/test_package/test_package.c:39:5: warning: '/*' within block comment [-Wcomment]
    /* coordinates is longitude, latitude, and values are expressed in degrees. */
    ^
1 warning generated.