[AWS] AWS on Mac OS X

[Pascal Obry]

John,

> I've made some progress in building shared libraries for AWS on Mac  
> OS X 10.4.10 using GNAT 4.3. As expected, the typical (unstriped)  
> binary went from nearly 4MB to under 70KB. Several problems arose,  
> and the proposed solutions require further refinement. As the matter  
> interests both groups, I have taken the liberty of cross-posting. I  
> would welcome discussion:
> 
> 0. Set SHARED = true in makefile.conf.
> 
> 1. Set SOEXT = .dylib for Darwin in makefile. [diff below]

This is not integrated.

> 2. The gcc option -fno-common is required. I put it in the Compiler's  
> Global_Options in shared.gpr. I don't yet understand .gpr well enough  
> to special case Darwin; can anyone offer guidance? [diff below]

Integrated.

I have added a new OS type for Darwin.

   type OS_Type is ("UNIX", "Windows_NT", "Darwin");
   OS : OS_Type := external ("OS", "UNIX");

Then in package Compiler, I have added the -fno-common option for Darwin.

      case OS is
         when "Darwin" =>
            for Default_Switches ("Ada")
              use Compiler'Default_Switches ("Ada") & ("-fno-common");
         when others =>
            null;
      end case;

It means that to build on Darwin you have to set OS to Darwin:

   $ make OS=Darwin ...

> 3. At several points, I had to manually copy the shared libs from the  
> obj directory (where they had been built) to the corresponding lib  
> directory:
> 
> cp .build/release/ssl/obj/libaws_ssl.dylib .build/release/ssl/lib/.
> cp .build/release/include/obj/libaws_include.dylib .build/release/ 
> include/lib/.
> cp .build/release/obj/libaws.dylib .build/release/lib/.

Probably worth a report to AdaCore. Looks like the .dylib are not
properly copied as it is done for .so and .dll!

> 5. Building the documentation depends on unicode.ads:
> 
> export ADA_INCLUDE_PATH=/opt/gtk/include/gtkada

To build the documentation without building all of AWS you can do:

   $ make -C docs build_doc

Thanks for your feedbacks on building AWS on Darwin.

Pascal.

-- 

--|------------------------------------------------------
--| Pascal Obry                           Team-Ada Member
--| 45, rue Gabriel Peri - 78114 Magny Les Hameaux FRANCE
--|------------------------------------------------------
--|              http://www.obry.net
--| "The best way to travel is by means of imagination"
--|
--| gpg --keyserver wwwkeys.pgp.net --recv-key C1082595