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CMake: Keep compatible with Windows 95 for 32-bit build.
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1 changed files with 11 additions and 1 deletions
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@ -164,7 +164,17 @@ endif()
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set(THREADS_PREFER_PTHREAD_FLAG TRUE)
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find_package(Threads REQUIRED)
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if(CMAKE_USE_WIN32_THREADS_INIT)
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add_compile_definitions(MYTHREAD_VISTA)
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if(CMAKE_SIZEOF_VOID_P EQUAL 4)
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# Define to 1 when using Windows 95 (and thus XP) compatible threads. This
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# avoids use of features that were added in Windows Vista.
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# This is used for 32-bit x86 builds for compatibility reasons since it
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# makes no measurable difference in performance compared to Vista threads.
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add_compile_definitions(MYTHREAD_WIN95)
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else()
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# Define to 1 when using Windows Vista compatible threads. This uses features
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# that are not available on Windows XP.
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add_compile_definitions(MYTHREAD_VISTA)
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endif()
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else()
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add_compile_definitions(MYTHREAD_POSIX)
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