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-rw-r--r--Modules/CMakeDetermineSystem.cmake2
1 files changed, 1 insertions, 1 deletions
diff --git a/Modules/CMakeDetermineSystem.cmake b/Modules/CMakeDetermineSystem.cmake
index 20c1541..3a95d2a 100644
--- a/Modules/CMakeDetermineSystem.cmake
+++ b/Modules/CMakeDetermineSystem.cmake
@@ -73,7 +73,7 @@ if(CMAKE_HOST_UNIX)
else()
if(CMAKE_HOST_WIN32)
set (CMAKE_HOST_SYSTEM_NAME "Windows")
- if (ENV{PROCESSOR_ARCHITEW6432})
+ if (DEFINED ENV{PROCESSOR_ARCHITEW6432})
set (CMAKE_HOST_SYSTEM_PROCESSOR "$ENV{PROCESSOR_ARCHITEW6432}")
else()
set (CMAKE_HOST_SYSTEM_PROCESSOR "$ENV{PROCESSOR_ARCHITECTURE}")