Debug the Haxe Compiler with OCamlDebug
1. Apply the following patch to the Makefile:
diff --git a/Makefile b/Makefile index e912e15..1f6c71f 100644 --- a/Makefile +++ b/Makefile @@ -80,7 +80,7 @@ libs: make -C libs/objsize OCAMLOPT=$(OCAMLOPT) OCAMLC=$(OCAMLC) $(TARGET_FLAG) haxe: $(MODULES:=.$(MODULE_EXT)) - $(COMPILER) -o $(OUTPUT) $(NATIVE_LIBS) $(NATIVE_LIB_FLAG) $(LFLAGS) $(LIBS:=.$(LIB_EXT)) $(MODULES:=.$(MODULE_EXT)) + $(COMPILER) -g -o $(OUTPUT) $(NATIVE_LIBS) $(NATIVE_LIB_FLAG) $(LFLAGS) $(LIBS:=.$(LIB_EXT)) $(MODULES:=.$(MODULE_EXT)) haxelib: (cd $(CURDIR)/extra/haxelib_src && $(CURDIR)/$(OUTPUT) haxelib.hxml && nekotools boot bin/haxelib.n)
2. Build the compiler with the following command:
make BYTECODE=1
3. Execute ocamldebug:
ocamldebug ./haxe [arguments]
% ocamldebug ./haxe OCaml Debugger version 4.02.1 (ocd) break @ Main 979 Loading program... done. Breakpoint 1 at 3223236: file main.ml, line 980, characters 2-29726 (ocd) run Time: 69442 - pc: 3223236 - module Main Breakpoint: 1 980 <|b|>let usage = Printf.sprintf (ocd) n 20 Time: 69757 - pc: 3223608 - module Main 1000 Common.define_value com Define.HaxeVer (float_repres (float_of_int version /. 1000.))<|a|>; (ocd) p version version: int = 3300 (ocd) rev Time: 69442 - pc: 3223236 - module Main Breakpoint: 1 980 <|b|>let usage = Printf.sprintf (ocd) prev Time: 69441 - pc: 3198700 - module Main 637 <|b|>init ctx; (ocd)
You can even trace back to the past!
Check the debugger commands at The debugger (ocamldebug).
