Re: [Caml-list] Win32 library

["Dmitry Bely" <dmitry.bely@gmail.com>]

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On 6/16/07, Christophe TROESTLER <Christophe.Troestler+ocaml@umh.ac.be> wrote:
> Hi,
>
> I am fighting with the compilation of ocamlodbc under windows (code
> here: http://cvs.gna.org/cvsweb/ocamlodbc/?cvsroot=ocamlodbc).  The
> problem is
[...]
> (complete report attached).  What I find strange is that all other
> caml symbols are resolved (and ocamlrun.lib matches for
> _caml_local_roots).

Nothing strange: caml_local_roots is a variable (not a function) so it
exported differently in case of byte/native code Ocaml runtime
(dynamic/static library respectively). So you should compile your C
source files with  different compiler options, not just copy .obj
files as the library author does. In other words, INSTALL_WIN32.bat is
broken (some time ago I also run into that). Here are my changes
(.diff is attached):

- Fix compilation problems
- Use ODBC2
- DLL support for the byte code

- Dmitry Bely

P.S. In fact I finally wrote a couple-line Omakefile and forgot about
all that problems :)

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Index: INSTALL_WIN32.bat
===================================================================
RCS file: D:\Work\cvsroot/config/ocamlodbc/INSTALL_WIN32.bat,v
retrieving revision 1.1
retrieving revision 1.3
diff -u -r1.1 -r1.3
--- INSTALL_WIN32.bat	14 Sep 2006 13:51:31 -0000	1.1
+++ INSTALL_WIN32.bat	20 Sep 2006 16:37:10 -0000	1.3
@@ -7,17 +7,21 @@
 @echo -----------------------------------------
 
 @echo  Compile the external functions and create the dll
-cl /nologo /Ox /MD /DWIN32 -I "%OCAMLLIB%"\caml -c ocaml_odbc_c.c
-move ocaml_odbc_c.obj ocaml_odbc_c.d.obj
-link /nologo /dll /out:dllocamlodbc.dll /def:ocamlodbc.DEF  ocaml_odbc_c.d.obj "%OCAMLLIB%"\ocamlrun.lib  libodbc32.lib
+cl /nologo /Ox /MT /DWIN32 /DODBC2 -I "%OCAMLLIB%"\caml -c ocaml_odbc_c.c
+lib /nologo /out:libocamlodbc.lib ocaml_odbc_c.obj
+copy libocamlodbc.lib "%OCAMLLIB%"
+cl /nologo /Ox /MD /DCAML_DLL /DWIN32 /DODBC2 -I "%OCAMLLIB%"\caml -c ocaml_odbc_c.c -Foocaml_odbc_c.d.obj
+link /nologo /dll /out:dllocamlodbc.dll /def:ocamlodbc.DEF  ocaml_odbc_c.d.obj "%OCAMLLIB%"\ocamlrun.lib odbc32.lib
 copy dllocamlodbc.dll "%OCAMLLIB%"\stublibs
 
 @echo  Make a native code library
-ocamlopt -a -o ocamlodbc.cmxa ocaml_odbc.ml ocamlodbc.mli ocamlodbc.ml ocaml_odbc_c.obj -cclib -lodbc32
-copy ocamlodbc.cmxa "%OCAMLLIB%"
+ocamlopt -a -o ocamlodbc.cmxa ocaml_odbc.ml ocamlodbc.mli ocamlodbc.ml ocaml_odbc_c.obj -cclib odbc32.lib
+copy ocamlodbc.mli "%OCAMLLIB%"
 copy ocamlodbc.cmi "%OCAMLLIB%"
+copy ocamlodbc.cmxa "%OCAMLLIB%"
 
-@echo  Make a custom runtime library
-ocamlc -a -o ocamlodbc.cma -custom ocaml_odbc.ml ocamlodbc.mli ocamlodbc.ml ocaml_odbc_c.obj -dllib -locamlodbc  -cclib -lodbc32
-copy ocamlodbc.cma "%OCAMLLIB%"
+@echo  Make a byte code DLL
+ocamlc -a -o ocamlodbc.cma ocaml_odbc.ml ocamlodbc.mli ocamlodbc.ml -dllib -locamlodbc
+copy ocamlodbc.mli "%OCAMLLIB%"
 copy ocamlodbc.cmi "%OCAMLLIB%"
+copy ocamlodbc.cma "%OCAMLLIB%"