SLOW_BUILD, 2 additional build targets, improve word complete

src/basic/basic_head.h

@@ -9,7 +9,6 @@
 #include <stddef.h>
 #include <stdlib.h>
 
-
 #if defined(__APPLE__) && defined(__MACH__)
     #define OS_POSIX 1
     #define OS_MAC 1
@@ -70,6 +69,16 @@
     #define DEBUG_BUILD 1
 #endif
 
+#ifndef SLOW_BUILD
+    #define SLOW_BUILD 0
+#endif
+
+#if SLOW_BUILD
+    #define IF_SLOW_BUILD(x) x
+#else
+    #define IF_SLOW_BUILD(x)
+#endif
+
 #if DEBUG_BUILD
     #define IF_DEBUG(x) x
 #else