d53c7860cd
<experimental/optional> is not available anymore in newer STL versions, e.g. according to libc++'s TS deprecation policy: https://libcxx.llvm.org/TS_deprecation.html
10 lines
344 B
CMake
10 lines
344 B
CMake
add_library(optional INTERFACE)
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# This polyfill is needed for Windows and Android since these standard libraries don't ship with
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# usable versions of <experimental/optional>
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if(WIN32 OR MBGL_PLATFORM STREQUAL "android")
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target_include_directories(optional SYSTEM INTERFACE
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${CMAKE_SOURCE_DIR}/vendor/optional/include
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)
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endif()
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