How to build 32-bit builds on 64-bit Ubuntu

[Kelly O'Hair]

I see all kinds of 'ifdef OPENJDK' patterns in the old makefiles, enough that I never trust myself
with regards to what happens between an open and closed build.

This is something I hope we can make much clearer in the future, or at least more obvious.

-kto

On Oct 30, 2012, at 8:58 AM, Phil Race wrote:

> On 10/30/2012 7:54 AM, Kelly Ohair wrote:
>> keep in mind that a closed build will be different than an openjdk build with regards to X11 dependences
> 
> XRender is used in open and closed. I don't think there's much difference wrt X11 for open vs. closed
> for the packages. Probably zero difference at that level.
> freetype is the only extra openjdk dependency that might be considered such as its most frequently available
> as part of X11 but it doesn't have to be and in fact is needed for headless too ..
> 
> -phil.
> 
>> 
>> Sent from my iPhone
>> 
>> On Oct 30, 2012, at 6:10, Magnus Ihse Bursie<magnus.ihse.bursie at oracle.com>  wrote:
>> 
>>> On 2012-10-30 05:03, David Holmes wrote:
>>>> Hi Magnus,
>>>> 
>>>> On 30/10/2012 1:59 AM, Magnus Ihse Bursie wrote:
>>>>> I was asked to document how to build 32-bit builds on 64-bit Ubuntu.
>>>>> 
>>>>> You need to install three packages:
>>>>> sudo apt-get install libc6-dev-i386 lib32stdc++6 ia32-libs
>>>> We also had to do:
>>>> 
>>>> apt-get install libxext-dev:i386 libxrender-dev:i386 libxtst-dev:i386
>>>> 
>>>> for X11. But these are the 32-bit libs that broke their 64-bit counterparts. I don't know exactly which one is to blame, or whether it has now been fixed upstream. We have had a lot of problems trying to install 32-bit libraries on these Ubuntu systems.
>>> Yeah, I can imagine. If I understand apt-get correctly, you are forcing install of 32-bit libraries as if it were a 32-bit system you installed on.
>>> 
>>> The libxext and libxtst packages seems to provide two .a files. Are these really needed? libxrender-dev provides libXrender.so, but the 32-bit version is provided in usr/lib32/libXrender.so by the package ia32-libs. That was all that I needed to install to be able to build for X11. (Without it, I could still build headless only).
>>> 
>>> This might of course have changed from one Ubuntu release to another. I am using 11.04 Natty. (I know, it's really old, but I haven't been comfortable switching to Unity.)
>>> 
>>> 
>>>>> However, these are broken, and do not place proper symlinks. (This is a
>>>>> bug that should probably be reported upstream to Ubuntu, if anyone
>>>>> bothers...). Therefore, you also need to do:
>>>>> sudo ln -s /usr/lib32/libstdc++.so.6 /usr/lib32/libstdc++.so
>>>>> sudo ln -s /usr/lib32/libasound.so.2 /usr/lib32/libasound.so
>>>> We have not had to do this AFAIK for our servers. At least for libasound there is an asound-dev package that has to be installed. It may be lib32asound-dev (can't check as the build servers are offline due to the storm).
>>> You are indeed correct, I had installed lib32asound2 and forgot about it. I also have lib32gcc1 installed, but I don't remember if I did that manually to support building reduced OpenJDK builds.
>>> 
>>> /Magnus
>>> 
>