diff --git a/CMakeLists.txt b/CMakeLists.txt
index a4c328fdd..b4136d3e9 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -239,13 +239,12 @@ endif()
 
 
 # Detect processor type.
-if(${CMAKE_SYSTEM_PROCESSOR} STREQUAL "x86_64" OR ${CMAKE_SYSTEM_PROCESSOR} STREQUAL "amd64")
-  set(CPU_ARCH "x64")
-elseif(${CMAKE_SYSTEM_PROCESSOR} STREQUAL "AMD64")
-  # MSVC x86/x64
+if(${CMAKE_SYSTEM_PROCESSOR} STREQUAL "x86_64" OR ${CMAKE_SYSTEM_PROCESSOR} STREQUAL "amd64" OR
+   ${CMAKE_SYSTEM_PROCESSOR} STREQUAL "AMD64")
   if(CMAKE_SIZEOF_VOID_P EQUAL 8)
     set(CPU_ARCH "x64")
   else()
+    # Cross-compiling 32-bit build. 32-bit hosts are not supported.
     set(CPU_ARCH "x86")
   endif()
 elseif(${CMAKE_SYSTEM_PROCESSOR} STREQUAL "x86" OR ${CMAKE_SYSTEM_PROCESSOR} STREQUAL "i386" OR
@@ -253,7 +252,8 @@ elseif(${CMAKE_SYSTEM_PROCESSOR} STREQUAL "x86" OR ${CMAKE_SYSTEM_PROCESSOR} STR
   set(CPU_ARCH "x86")
 elseif(${CMAKE_SYSTEM_PROCESSOR} STREQUAL "aarch64" OR ${CMAKE_SYSTEM_PROCESSOR} STREQUAL "arm64")
   set(CPU_ARCH "aarch64")
-elseif(${CMAKE_SYSTEM_PROCESSOR} STREQUAL "arm" OR ${CMAKE_SYSTEM_PROCESSOR} STREQUAL "armv7-a" OR ${CMAKE_SYSTEM_PROCESSOR} STREQUAL "armv7l")
+elseif(${CMAKE_SYSTEM_PROCESSOR} STREQUAL "arm" OR ${CMAKE_SYSTEM_PROCESSOR} STREQUAL "armv7-a" OR
+       ${CMAKE_SYSTEM_PROCESSOR} STREQUAL "armv7l")
   set(CPU_ARCH "aarch32")
   if(ANDROID)
     # Force ARM mode, since apparently ANDROID_ARM_MODE isn't working..