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<message 
  url="2003/07/01ec52a086a48ba9f37cf34e09d2a702"
  from="Richard Jones &lt;rich@a...&gt;"
  author="Richard Jones"
  date="2003-07-28T17:41:56"
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<thread subject="[Caml-list] Dynlink problems">
<msg 
  url="2003/07/976c83213750a167f0a635b7687ffe81"
  from="Richard Jones &lt;rich@a...&gt;"
  author="Richard Jones"
  date="2003-07-28T09:49:21"
  subject="[Caml-list] Dynlink problems">
<msg 
  url="2003/07/9a64ca5030c2ffb1a7eff3aa619c37e1"
  from="Jacques Garrigue &lt;garrigue@k...&gt;"
  author="Jacques Garrigue"
  date="2003-07-28T10:07:36"
  subject="Re: [Caml-list] Dynlink problems">
</msg>
<msg 
  url="2003/07/ab88f0ef9aad4a672172cac3798039fb"
  from="Nicolas Cannasse &lt;warplayer@f...&gt;"
  author="Nicolas Cannasse"
  date="2003-07-28T10:22:20"
  subject="Re: [Caml-list] Dynlink problems">
<msg 
  url="2003/07/01ec52a086a48ba9f37cf34e09d2a702"
  from="Richard Jones &lt;rich@a...&gt;"
  author="Richard Jones"
  date="2003-07-28T17:41:56"
  subject="Re: [Caml-list] Dynlink problems">
<msg 
  url="2003/07/9e1cdbeb2581b104e19c252cae4b4b29"
  from="Jacques Garrigue &lt;garrigue@k...&gt;"
  author="Jacques Garrigue"
  date="2003-07-29T08:48:00"
  subject="Re: [Caml-list] Dynlink problems">
<msg 
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  from="Richard Jones &lt;rich@a...&gt;"
  author="Richard Jones"
  date="2003-07-29T15:43:56"
  subject="Re: [Caml-list] Dynlink problems">
<msg 
  url="2003/07/d4af9359cdc183f21897cd610a09561c"
  from="Richard Jones &lt;rich@a...&gt;"
  author="Richard Jones"
  date="2003-07-29T16:28:46"
  subject="Re: [Caml-list] Dynlink problems">
<msg 
  url="2003/07/90829853dc49798bf101a9cfeb7983e1"
  from="Richard Jones &lt;rich@a...&gt;"
  author="Richard Jones"
  date="2003-07-31T17:31:58"
  subject="Re: [Caml-list] Dynlink problems">
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</thread>

<contents>
I still can't work out the linking problems.

http://www.annexia.org/tmp/mod_caml-0.02.tar.gz

The situation is this:

* /usr/sbin/apache is the main program, and exports symbols like
  ap_pstrdup to modules.

* mod_caml.so is my module. This is written in C &amp; OCaml (caml_init.ml)
  and requires the OCaml Apache library to run.

* The Apache library is also written in a mix of C &amp; OCaml, and must be
  loaded dynamically because it contains shared data structures in the C
  part.

* Plug-in OCaml programs (eg: eg_print_trans.ml) need to be dynamically
  linked with OCaml Apache lib, and access external symbols in
  /usr/sbin/apache (because these are needed by Apache).

So far I get strange errors like:

Syntax error on line 84 of /home/rich/d/merjis/test/mod_caml/test/httpd.conf:
error while linking /home/rich/d/merjis/test/mod_caml/eg_print_trans.cma.
Reference to undefined global `Callback'

I can fix that one by added stdlib.cma to the list of libraries linked
into eg_print_trans.cma, but that seems the wrong thing to do. Even
when I do this, I get:

Syntax error on line 84 of /home/rich/d/merjis/test/mod_caml/test/httpd.conf:
error while linking /home/rich/d/merjis/test/mod_caml/eg_print_trans.cma.
The external function `caml_input' is not available

.. which I haven't been able to fix because -lcamlrun is only available
as a static library (why??).

Rich.

-- 
Richard Jones. http://www.annexia.org/ http://freshmeat.net/users/rwmj
Merjis Ltd. http://www.merjis.com/ - all your business data are belong to you.
MAKE+ is a sane replacement for GNU autoconf/automake. One script compiles,
RPMs, pkgs etc. Linux, BSD, Solaris. http://www.annexia.org/freeware/makeplus/

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