diff --git a/Modules/CMakeFortranCompilerABI.F b/Modules/CMakeFortranCompilerABI.F
index 21ca7ff50..b34c28484 100644
--- a/Modules/CMakeFortranCompilerABI.F
+++ b/Modules/CMakeFortranCompilerABI.F
@@ -10,11 +10,15 @@
         PRINT *, 'INFO:sizeof_dptr[8]'
 #elif defined(_M_AMD64)
         PRINT *, 'INFO:sizeof_dptr[8]'
+#elif defined(__x86_64__)
+        PRINT *, 'INFO:sizeof_dptr[8]'
 
 #elif defined(_ILP32)
         PRINT *, 'INFO:sizeof_dptr[4]'
 #elif defined(_M_IX86)
         PRINT *, 'INFO:sizeof_dptr[4]'
+#elif defined(__i386__)
+        PRINT *, 'INFO:sizeof_dptr[4]'
 
 #elif defined(__SIZEOF_POINTER__) && __SIZEOF_POINTER__ == 8
         PRINT *, 'INFO:sizeof_dptr[8]'