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-rw-r--r--cmake/EigenDetermineOSVersion.cmake2
1 files changed, 1 insertions, 1 deletions
diff --git a/cmake/EigenDetermineOSVersion.cmake b/cmake/EigenDetermineOSVersion.cmake
index 3c48d4c37..9246fa67c 100644
--- a/cmake/EigenDetermineOSVersion.cmake
+++ b/cmake/EigenDetermineOSVersion.cmake
@@ -26,7 +26,7 @@ function(DetermineShortWindowsName WIN_VERSION win_num_version)
endfunction()
function(DetermineOSVersion OS_VERSION)
- if (WIN32)
+ if (WIN32 AND CMAKE_HOST_SYSTEM_NAME MATCHES Windows)
file (TO_NATIVE_PATH "$ENV{COMSPEC}" SHELL)
exec_program( ${SHELL} ARGS "/c" "ver" OUTPUT_VARIABLE ver_output)