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/6.3.1/_/_/build/329af548b878bd302d0be4a9dfd444945f251030/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/d22cb345-75ec-4f31-a9bc-277a040b8995/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.