1 diff --git a/CMakeLists.txt b/CMakeLists.txt
2 index b2f137a..3754095 100644
5 @@ -40,7 +40,7 @@ message(STATUS "VERSION = ${VERSION}, BUILD = ${BUILD}")
7 # Detect CPU type and whether we're building 64-bit or 32-bit code
8 math(EXPR BITS "${CMAKE_SIZEOF_VOID_P} * 8")
9 -string(TOLOWER ${CMAKE_SYSTEM_PROCESSOR} CMAKE_SYSTEM_PROCESSOR_LC)
10 +string(TOLOWER "${CMAKE_SYSTEM_PROCESSOR}" CMAKE_SYSTEM_PROCESSOR_LC)
11 if(CMAKE_SYSTEM_PROCESSOR_LC MATCHES "x86_64" OR
12 CMAKE_SYSTEM_PROCESSOR_LC MATCHES "amd64" OR
13 CMAKE_SYSTEM_PROCESSOR_LC MATCHES "i[0-9]86" OR