code unitized and interface sanitized

original commit: abdf1b56a7cf0d87cba22e2b4177b9e6398a2da4

collects/compiler/sig.ss

@@ -0,0 +1,74 @@
+
+(reference-library "compiles.ss")
+(reference-library "makes.ss" "make")
+(reference-library "collections.ss" "make")
+
+;; Compiler options
+(define-signature compiler:option^
+  (verbose ; default = #f
+
+   setup-prefix ; string to embed in public names;
+                ; used mainly for compiling extensions
+                ;  with the collection name so that 
+                ;  cross-extension conflicts are less
+                ;  likely in architectures that expose
+                ;  the public names of loaded extensions
+                ; default = ""
+
+   clean-intermediate-files ; #t => keep intermediate .c/.o files
+                            ; default = #f
+
+   propagate-constants  ; default = #t
+   assume-primitives    ; #t => car = #%car; default = #f
+   stupid               ; allow obvious non-syntactic errors;
+                        ;  e.g.: ((lambda () 0) 1 2 3)
+
+   vehicles             ; Controls how closures are compiled:
+			;  'vehicles:automatic,
+                        ;  'vehicles:functions,
+                        ;  'vechicles:units, or
+                        ;  'vehicles:monolithic.
+                        ; default = 'vehicles:automatic
+   vehicles:monoliths   ; Size for 'vehicles:monolithic
+   seed                 ; Randomizer seed for 'vehicles:monolithic
+
+   max-exprs-per-top-level-set ; Number of top-level Scheme expressions
+			       ; crammed into one C function; default = 25
+
+   unpack-environments  ; default = #t
+		        ; Maybe #f helps for register-poor architectures?
+
+   debug ; #t => creates debug.txt debugging file
+   test  ; #t => ignores top-level expressions with syntax errors
+   ))
+
+;; Compiler procedures
+(define-signature compiler^
+  (compile-extensions
+   compile-extensions-to-c
+   compile-c-extensions
+
+   compile-extension-parts
+   compile-extension-parts-to-c
+   compile-c-extension-parts
+
+   link-extension-parts
+
+   compile-zos
+
+   compile-collection-extension
+   compile-collection-zos))
+
+;; Low-level extension compiler interface
+(define-signature compiler:inner^
+  (compile-extension
+   compile-extension-to-c
+   compile-c-extension
+   compile-extension-part
+   compile-extension-part-to-c
+   compile-c-extension-part
+   eval-compile-prefix))
+
+;; Low-level multi-file extension linker interface
+(define-signature compiler:linker^
+  (link-extension))