HAVE_MALLOPT is defined only when we have it. It's not a 1/0 ttype of define, it's a

defined/undefined one.

This commit was SVN r9221.

ompi/mca/mpool/base/mpool_base_lookup.c

@@ -27,10 +27,10 @@
 #include "ompi/mca/mpool/base/base.h"
 #include "mpool_base_mem_cb.h"
 
-#if HAVE_MALLOPT == 1
+#if defined(HAVE_MALLOPT)
 #include <malloc.h>
 extern int mca_mpool_base_disable_sbrk;
-#endif
+#endif  /* defined(HAVE_MALLOPT) */
 
 
 extern int mca_mpool_base_use_mem_hooks;
@@ -96,12 +96,12 @@ mca_mpool_base_module_t* mca_mpool_base_module_create(
               OBJ_CONSTRUCT(&mca_mpool_base_mem_cb_array, ompi_pointer_array_t);
         }
 
-#if HAVE_MALLOPT == 1
+#if defined(HAVE_MALLOPT)
         else if(mca_mpool_base_disable_sbrk) { 
             mallopt(M_TRIM_THRESHOLD, -1); 
             mallopt(M_MMAP_MAX, 0);
         }
-#endif
+#endif  /* defined(HAVE_MALLOPT) */
     }
     return module; 
 }