CMakeLists: Further improve the error messages regarding CMAKE_SIZEOF_VOID_P

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 1b6a7255053ac04c48c914f35f629d1e3931bebb..17b5fba7bfd7642d4123d0d9f7747dbd05ae0713 100644 (file)
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -580,8 +580,10 @@ IF (CMAKE_SIZEOF_VOID_P EQUAL 8)
        ADD_DEFINITIONS(-DGIT_ARCH_64)
 ELSEIF (CMAKE_SIZEOF_VOID_P EQUAL 4)
        ADD_DEFINITIONS(-DGIT_ARCH_32)
-ELSE()
+ELSEIF (CMAKE_SIZEOF_VOID_P)
        MESSAGE(FATAL_ERROR "Unsupported architecture (pointer size is ${CMAKE_SIZEOF_VOID_P} bytes)")
+ELSE()
+       MESSAGE(FATAL_ERROR "Unsupported architecture (CMAKE_SIZEOF_VOID_P is unset)")
 ENDIF()
 
 # Compile and link libgit2