Re: BUG #3818: Cross compilation problems

Richard Evans wrote:
>> The following bug has been logged online:
>>
>> Bug reference:      3818
>> Logged by:          Richard Evans
>> Email address:      richard.evans@blueallegro.net
>> PostgreSQL version: 8.3beta
>> Operating system:   Linux/windows
>> Description:        Cross compilation problems
>> Details:
>>
>> I've been investigating cross-compiling for mingw32 on a linux build system.
>>  I used the current snapshot since it has a fix for the gettimeofday problem
>> with new mingw installs.
>>
>
> Out of curiosity, why?
>
I want to set up a build system on a single linux host to build for a
number of different targets - linux and win32 at least.
>
>
>> Mostly it worked, but there were a few problems which I think can all be
>> fixed in the configure script:
>>
>> 1. The configure script does not check for cross-compile installs of ar,
>> dlltool, dllwrap and windres. It manages to find the cross compile gcc
>> (mingw32-gcc in my install), but does not check for mingw32-dlltool, etc.
>> You work round this by setting AR= DLLTOOL= and DLLWRAP= on the make line
>> but ideally it should be done in the configure stage.
>>
>> 2. The Makefile in pgevent/bin refers to dllwrap directly, not $(DLLWRAP).
>>
>
> This is a definite oversight, so I've fixed this in HEAD.
>
>
>
>> 3. Several makefiles use windres directly; there is no $(WINDRES) variable
>> which can be set.
>>
>> 4. The zic problem in make install - see bug #1311.  Simple solution here is
>> to have a configure option which allows the use of the build systems own zic
>> command.
>>
>> I may try coming up with some patches to configure to check for dlltool, etc
>> but I haven't edited configure files before.
>>
>
> The rest of this is definitely not 8.3 material. But if you come up with
> patches for 8.4, I'm sure we'd be interested ;-) If you have any
> specific questions about the autoconf stuff (or any other parts of it),
> just post it to -hackers.
>
>
>
>> Once I worked round these problems I was able to cross compile a working
>> postgres for mingw32 on a linux host.
>>
>
> Cool!
>
> //Magnus
>
>