make sure __cplusplus is defined under msvc

8f4efe57 · gabime · 0613dbc4 · 8f4efe57
Commit 8f4efe57 authored Mar 12, 2021 by gabime
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CMakeLists.txt CMakeLists.txt +5 -0

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--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -30,6 +30,11 @@ if(NOT CMAKE_CXX_STANDARD)
    set(CMAKE_CXX_STANDARD_REQUIRED ON)
 endif()

+# make sure __cplusplus is defined under msvc
+if(MSVC)
+    string(APPEND CMAKE_CXX_FLAGS " /Zc:__cplusplus")
+endif()
+
 set(CMAKE_CXX_EXTENSIONS OFF)

 if(CMAKE_SYSTEM_NAME MATCHES "CYGWIN" OR CMAKE_SYSTEM_NAME MATCHES "MSYS")