OpenJDK 7 build fails on Snow Leopard

[John Rose]

On Oct 18, 2009, at 1:06 PM, Greg Lewis wrote:

> G'day John,
>
> On Fri, Oct 02, 2009 at 06:06:01PM -0700, John Rose wrote:
>> With the current bsd-port plus unrelated MLVM patches I got a clean
>> Snow Leopard build.  It passed the MLVM regression tests.
>>
>> I had to use GCC 4.0 as Michael suggested.
>>
>> The 4.2 compiler is offering some porting resistance.  I put a patch
>> into MLVM which copes with the new "printf" warnings it generates:
>>   http://hg.openjdk.java.net/mlvm/mlvm/hotspot/raw-file/f9a6cda5b465/snowleopard.patch
>
> Looking at the patch, it defines FORMATL32_MODIFIER for all gcc >=  
> 4.2.
> Interestingly, FreeBSD (7.x) uses gcc 4.2.1 and doesn't have any  
> problem
> compiling HotSpot (its my main platform).  So perhaps this is overly
> broad?  I'll give the patch a try and see if it causes any compile
> problems.  If so then we probably want to restrict this to just  
> MacOS X
> and not all platforms in general.

I only tried the 4.0 and 4.2 on my Mac, so it could well be overly  
broad.

> I'd like to push this in before I start the b74 merge (just pushing  
> the
> b73 merge now).
>
>> This patch is a bunch of lint-type fixes, and works fine on GCC 4.0.
>> (Haven't tested on Solaris, etc, but s.b. OK.)  It's probably not
>> worth the effort of pushing this patch upstream until we have a
>> working GCC 4.2 build.
>>
>> The current problem with GCC 4.2 is that when I build on x86_32, the
>> JVM crashes in at least two places:  Under -Xint mode, the JVMG mode
>> throws an assert on exit, and otherwise it throws asserts or crashes
>> in compiler-related code.  The 64-bit version of the JVM appears to
>> work, but I haven't exercised it much.
>
> FreeBSD 7.x/i386 doesn't exhibit these problems with gcc 4.2.1, so it
> seems to be something specific to either MacOS X or Apple's version of
> gcc 4.2.

That's good to know.  As a "lint" type check, it seems excessively  
picky.

The patch is *not* needed to build hotspot, even on snow leopard, as  
long as gcc 4.2 is avoided.
I published it in case someone wants to try to track down the other  
problems with gcc 4.2.

Thanks for looking it over!

-- John

>> Since I'm chasing other problems, I'm going to leave GCC 4.2 alone  
>> for
>> now.  If anyone wants to pick up this issue, help yourself to
>> snowleopard.patch above.
>>
>> -- John
>
>>
>
>
> -- 
> Greg Lewis                          Email   : glewis at eyesbeyond.com
> Eyes Beyond                         Web     : http:// 
> www.eyesbeyond.com
> Information Technology              FreeBSD : glewis at FreeBSD.org
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