[Confusion] about ${PROJECT_NAME}_BUILD_SHARED_LIBS

[Kiddinglife]

Describe the confusion
I am confused about the below cmake snippets in StandardSettings.cmake:

# Export all symbols when building a shared library
if(${PROJECT_NAME}_BUILD_SHARED_LIBS)
    set(CMAKE_WINDOWS_EXPORT_ALL_SYMBOLS OFF)
    set(CMAKE_CXX_VISIBILITY_PRESET hidden)
    set(CMAKE_VISIBILITY_INLINES_HIDDEN 1)
endif()

As cmake tool will build all the libraries as shared library when BUILD_SHARED_LIBS is ON, my understnading is that we should overwrite the cmake built-in cache variable of BUILD_SHARED_LIBS when ${PROJECT_NAME}_BUILD_SHARED_LIBS is ON. Something looks like this:

# Export all symbols when building a shared library
if(${PROJECT_NAME}_BUILD_SHARED_LIBS)
    set(CMAKE_WINDOWS_EXPORT_ALL_SYMBOLS OFF)
    set(CMAKE_CXX_VISIBILITY_PRESET hidden)
    set(CMAKE_VISIBILITY_INLINES_HIDDEN 1)
    set(BUILD_SHARED_LIBS ON CACHE BOOL "build shared libraries except when explicitely set to static" FORCE)
endif()

Let me know what you think it.

Expected behavior
Overwrite the cmake built-in cache variable of BUILD_SHARED_LIBS when ${PROJECT_NAME}_BUILD_SHARED_LIBS is ON

Desktop (please complete the following information):

• OS: Windows
• Version 10
• Editor: vscode

[filipdutescu]

Honestly, I think I should remove the custom macro and just keep the default one, since there is no reason not to. Good catch!