mirror of https://github.com/microsoft/vcpkg.git
14 lines
611 B
Diff
14 lines
611 B
Diff
diff --git a/CMakeLists.txt b/CMakeLists.txt
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index d39958a..cdee3ce 100644
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--- a/CMakeLists.txt
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+++ b/CMakeLists.txt
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@@ -117,7 +117,7 @@ if(BUILD_SHARED_LIBS AND WIN32 AND HTTPLIB_COMPILE)
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set(CMAKE_WINDOWS_EXPORT_ALL_SYMBOLS ON)
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endif()
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-if(CMAKE_SYSTEM_NAME MATCHES "Windows" AND ${CMAKE_SYSTEM_VERSION} VERSION_LESS "10.0.0")
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+if(CMAKE_SYSTEM_NAME MATCHES "Windows" AND DEFINED CMAKE_SYSTEM_VERSION AND CMAKE_SYSTEM_VERSION VERSION_LESS "10.0.0")
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message(SEND_ERROR "Windows ${CMAKE_SYSTEM_VERSION} or lower is not supported. Please use Windows 10 or later.")
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endif()
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if(CMAKE_SIZEOF_VOID_P LESS 8)
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