debugger, ocamlbuild, ocamldoc: separate their build from the compiler's.HEADmaster

In other words: "make world" doesn't build the aforementioned tools
anymore and they need to be configured and built separately. They are still
in the same source tree.

At first sight this should lead to more work but there are _several_
reasons for such a split.

* It dissociates the builds and therefore the breakage when doing changes
in the build system.

* It makes changing one of them simpler.

* It simplifies the Makefile files and removes some needs for the
UNIX_OR_WIN32 variable.

* It removes the Makefile.nt files and enables the build of the manpages on
Windows too.

* It builds these tools using the .opt variants when possible. This doesn't
save that much time but it's nice nonetheless.

* It's simpler to package for distributions which already split these tools
to their own packages.

* It simplifies cross-compilation by reducing the scope of the changes
needed (i.e. I hope there won't be a need for more changes in the build
systems of these tools).

* It refers less to boot/ and should make bootstrapping at least a bit
simpler (I can't tell how much but in any case it's not negative).

As for the negative aspects:

* Possibly more steps for compiler hackers in the "hot path".

* A hand-written "configure_tool" script which creates a "Makefile.local"
file which is include'ed from the Makefile files and which defines the
invocation of the compiler and of other tools.

After these changes, there are two ways to build the tools: whether OCaml
is installed system-wide or not (i.e. "uninstalled" [ I'm not to be blamed
for this terminology ]).

If the compiler has been installed (typical for packagers):
  ./configure_tool debugger
  make -C debugger all

If the compiler has not been installed (probably typical for compiler devs
even though I'm not sure most don't disable the build of the tools when
doing their development):
  UNINSTALLED_OCAML_DESTDIR=$(pwd)/lapin UNINSTALLED_OCAML_PREFIX=/usr ./configure_tool debugger
  make -C debugger all

In the example directly above, UNINSTALLED_OCAML_PREFIX defaults to
"/usr/local" (the default for the compiler build too) and must match.
UNINSTALLED_OCAML_DESTDIR has no default and must be the same as the value
used for DESTDIR when running "make install DESTDIR=$(pwd)/lapin" for the
compiler. Providing an absolute path, while not mandatory, is saner.

Comments are welcome on how to make the whole process more handy for you
(yes, "you", the reader, whoever you are).

1 files changed, 13 insertions, 13 deletions

diff --git a/ocamldoc/.depend b/ocamldoc/.depend
index ec461d73d..5a2df26c5 100644
--- a/ocamldoc/.depend
+++ b/ocamldoc/.depend
@@ -1,3 +1,11 @@
+odoc.cmo : ../typing/typedtree.cmi odoc_messages.cmo odoc_info.cmi \
+    odoc_global.cmi odoc_gen.cmi odoc_config.cmi odoc_args.cmi \
+    odoc_analyse.cmi ../utils/misc.cmi ../utils/config.cmi \
+    ../utils/clflags.cmi
+odoc.cmx : ../typing/typedtree.cmx odoc_messages.cmx odoc_info.cmx \
+    odoc_global.cmx odoc_gen.cmx odoc_config.cmx odoc_args.cmx \
+    odoc_analyse.cmx ../utils/misc.cmx ../utils/config.cmx \
+    ../utils/clflags.cmx
 odoc_analyse.cmo : ../utils/warnings.cmi ../typing/types.cmi \
     ../typing/typemod.cmi ../typing/typedtree.cmi ../parsing/syntaxerr.cmi \
     ../driver/pparse.cmi ../parsing/parse.cmi odoc_types.cmi odoc_text.cmi \
@@ -44,8 +52,6 @@ odoc_class.cmo : ../typing/types.cmi odoc_value.cmo odoc_types.cmi \
     odoc_parameter.cmo odoc_name.cmi
 odoc_class.cmx : ../typing/types.cmx odoc_value.cmx odoc_types.cmx \
     odoc_parameter.cmx odoc_name.cmx
-odoc_comments_global.cmo : odoc_comments_global.cmi
-odoc_comments_global.cmx : odoc_comments_global.cmi
 odoc_comments.cmo : odoc_types.cmi odoc_text.cmi odoc_see_lexer.cmo \
     odoc_parser.cmi odoc_misc.cmi odoc_messages.cmo odoc_merge.cmi \
     odoc_lexer.cmo odoc_global.cmi odoc_cross.cmi odoc_comments_global.cmi \
@@ -54,6 +60,8 @@ odoc_comments.cmx : odoc_types.cmx odoc_text.cmx odoc_see_lexer.cmx \
     odoc_parser.cmx odoc_misc.cmx odoc_messages.cmx odoc_merge.cmx \
     odoc_lexer.cmx odoc_global.cmx odoc_cross.cmx odoc_comments_global.cmx \
     odoc_comments.cmi
+odoc_comments_global.cmo : odoc_comments_global.cmi
+odoc_comments_global.cmx : odoc_comments_global.cmi
 odoc_config.cmo : ../utils/config.cmi odoc_config.cmi
 odoc_config.cmx : ../utils/config.cmx odoc_config.cmi
 odoc_control.cmo :
@@ -144,14 +152,6 @@ odoc_misc.cmo : ../typing/types.cmi ../typing/predef.cmi ../typing/path.cmi \
 odoc_misc.cmx : ../typing/types.cmx ../typing/predef.cmx ../typing/path.cmx \
     odoc_types.cmx odoc_messages.cmx ../parsing/longident.cmx \
     ../typing/ctype.cmx ../typing/btype.cmx odoc_misc.cmi
-odoc.cmo : ../typing/typedtree.cmi odoc_messages.cmo odoc_info.cmi \
-    odoc_global.cmi odoc_gen.cmi odoc_config.cmi odoc_args.cmi \
-    odoc_analyse.cmi ../utils/misc.cmi ../utils/config.cmi \
-    ../utils/clflags.cmi
-odoc.cmx : ../typing/typedtree.cmx odoc_messages.cmx odoc_info.cmx \
-    odoc_global.cmx odoc_gen.cmx odoc_config.cmx odoc_args.cmx \
-    odoc_analyse.cmx ../utils/misc.cmx ../utils/config.cmx \
-    ../utils/clflags.cmx
 odoc_module.cmo : ../typing/types.cmi odoc_value.cmo odoc_types.cmi \
     odoc_type.cmo odoc_name.cmi odoc_extension.cmo odoc_exception.cmo \
     odoc_class.cmo
@@ -214,12 +214,12 @@ odoc_texi.cmo : ../typing/types.cmi odoc_to_text.cmo odoc_messages.cmo \
     odoc_info.cmi ../parsing/asttypes.cmi
 odoc_texi.cmx : ../typing/types.cmx odoc_to_text.cmx odoc_messages.cmx \
     odoc_info.cmx ../parsing/asttypes.cmi
-odoc_text_lexer.cmo : odoc_text_parser.cmi odoc_misc.cmi
-odoc_text_lexer.cmx : odoc_text_parser.cmx odoc_misc.cmx
 odoc_text.cmo : odoc_types.cmi odoc_text_parser.cmi odoc_text_lexer.cmo \
     odoc_text.cmi
 odoc_text.cmx : odoc_types.cmx odoc_text_parser.cmx odoc_text_lexer.cmx \
     odoc_text.cmi
+odoc_text_lexer.cmo : odoc_text_parser.cmi odoc_misc.cmi
+odoc_text_lexer.cmx : odoc_text_parser.cmx odoc_misc.cmx
 odoc_text_parser.cmo : odoc_types.cmi odoc_misc.cmi odoc_text_parser.cmi
 odoc_text_parser.cmx : odoc_types.cmx odoc_misc.cmx odoc_text_parser.cmi
 odoc_to_text.cmo : odoc_module.cmo odoc_messages.cmo odoc_info.cmi
@@ -238,8 +238,8 @@ odoc_analyse.cmi : odoc_module.cmo odoc_global.cmi
 odoc_args.cmi : odoc_gen.cmi
 odoc_ast.cmi : ../typing/types.cmi ../typing/typedtree.cmi \
     ../parsing/parsetree.cmi odoc_sig.cmi odoc_name.cmi odoc_module.cmo
-odoc_comments_global.cmi :
 odoc_comments.cmi : odoc_types.cmi odoc_module.cmo
+odoc_comments_global.cmi :
 odoc_config.cmi :
 odoc_cross.cmi : odoc_types.cmi odoc_module.cmo
 odoc_dag2html.cmi : odoc_info.cmi