(* Output a bytecode executable as a C file *)
-let link_bytecode_as_c ppf tolink outfile =
+let link_bytecode_as_c ppf tolink outfile with_main =
let outchan = open_out outfile in
begin try
(* The bytecode *)
(* The table of primitives *)
Symtable.output_primitive_table outchan mlvalues_primitives;
(* The entry point *)
- output_string outchan "\
+ if with_main then begin
+ output_string outchan "\
+\nint main(int argc, char **argv)\
+\n{\
+\n caml_startup_code(caml_code, sizeof(caml_code),\
+\n caml_data, sizeof(caml_data),\
+\n caml_sections, sizeof(caml_sections),\
+\n argv);\
+\n return 0; /* not reached */\
+\n}\n"
+ end else begin
+ output_string outchan "\
\nvoid caml_startup(char ** argv)\
\n{\
\n caml_startup_code(caml_code, sizeof(caml_code),\
\n caml_data, sizeof(caml_data),\
\n caml_sections, sizeof(caml_sections),\
\n argv);\
-\n}\
+\n}\n"
+ end;
+ output_string outchan "\
\n#ifdef __cplusplus\
\n}\
\n#endif\n";
if String.contains name '.' then name else name ^ ".exe"
| _ -> name
+(* Debian-specific -custom behaviour:
+ - if DEB_HOST_ARCH is non-empty, it is activated by default
+ - can be enabled/disabled by setting OCAML_CUSTOM_EMBED to y/n
+*)
+
+let custom_embed =
+ try Sys.getenv "OCAML_CUSTOM_EMBED" = "y"
+ with Not_found ->
+ try Sys.getenv "DEB_HOST_ARCH" <> ""
+ with Not_found -> false
+
(* Main entry point (build a custom runtime if needed) *)
let link ppf objfiles output_name =
Clflags.dllibs := !lib_dllibs @ !Clflags.dllibs; (* put user's DLLs first *)
if not !Clflags.custom_runtime then
link_bytecode ppf tolink output_name true
+ else if custom_embed && not !Clflags.output_c_object && not !Clflags.make_runtime then
+ let c_file = Filename.temp_file "camlobj" ".c" in
+ try
+ link_bytecode_as_c ppf tolink c_file true;
+ let exec_name = fix_exec_name output_name in
+ if not (build_custom_runtime c_file exec_name)
+ then raise(Error Custom_runtime);
+ with x ->
+ remove_file c_file;
+ raise x
else if not !Clflags.output_c_object then begin
let bytecode_name = Filename.temp_file "camlcode" "" in
let prim_name = Filename.temp_file "camlprim" ".c" in
if Sys.file_exists c_file then raise(Error(File_exists c_file));
let temps = ref [] in
try
- link_bytecode_as_c ppf tolink c_file;
+ link_bytecode_as_c ppf tolink c_file false;
if not (Filename.check_suffix output_name ".c") then begin
temps := c_file :: !temps;
if Ccomp.compile_file c_file <> 0 then raise(Error Custom_runtime);
projects / ocaml.git / commitdiff