Patch to fix build breakage with GCC 4.7

[Deepak Bhole]

* Kelly O'Hair <kelly.ohair at oracle.com> [2012-02-29 20:39]:
> The sample.makefile.txt files may not even be used during the build, I'm not sure.
> They may have only been supplied as documentation on how to build the native code.
> 
> Deleting the -mimpure-text is probably right all around.
> 

Okay, so then looks like the first iteration should be OK for that:
http://cr.openjdk.java.net/~dbhole/GCC-4.7-JDK8.00/

If so, please go ahead and commit on my behalf as I can't.

Thanks!
Deepak

> -kto
> 
> On Feb 29, 2012, at 4:04 PM, Deepak Bhole wrote:
> 
> > * David Holmes <david.holmes at oracle.com> [2012-02-29 18:48]:
> >> Sorry let me back up a step here. The issue with linux-sparc
> >> involved the actual build instructions in Compiler-gcc.gmk, not so
> >> much the sample makefiles for the various JVMTI demos - at least in
> >> my response. Unless someone from serviceability indicates otherwise
> >> I'd suggest just deleting -mimpure-text from those samples.
> >> 
> >> Just to confuse things further, the gcc manual now lists this as a
> >> Solaris 2 option _not_ a sparc option:
> >> 
> >> http://gcc.gnu.org/onlinedocs/gcc/Solaris-2-Options.html#index-mimpure_002dtext-2103
> >> 
> >> http://old.nabble.com/Correctly-document-Solaris-2-options-td29851048.html
> >> 
> >> This seems to indicate the gcc folk are ignorant of linux-sparc!
> >> 
> > 
> > Gah :/
> > 
> >> As we only used this option for linux builds and not Solaris builds
> >> I find this even more confusing.
> >> 
> >> So at this point I will step back and let the build folk figure it out.
> >> 
> > 
> > Removing it might probably be correct then, since it is not applicable
> > to Linux. I will wait for someone with more experience to chime in
> > though.
> > 
> > Cheers,
> > Deepak
> > 
> >> David
> >> -----
> >> 
> >> On 1/03/2012 9:28 AM, David Holmes wrote:
> >>> Hi Deepak,
> >>> 
> >>> On 1/03/2012 6:30 AM, Deepak Bhole wrote:
> >>>> * David Holmes<david.holmes at oracle.com> [2012-01-30 21:50]:
> >>>>> On 31/01/2012 12:36 PM, Deepak Bhole wrote:
> >>>>>> * David Holmes<david.holmes at oracle.com> [2012-01-30 19:57]:
> >>>>>>> While gcc compilation on sparc is rare I'm not sure that simply
> >>>>>>> deleting the sparc-only option unconditionally is the right thing to
> >>>>>>> do.
> >>>>>>> 
> >>>>>> 
> >>>>>> I thought about that too. But I was unable to find info on OpenJDK +
> >>>>>> SPARC + Linux. Is that combination even supported? The README doesn't
> >>>>>> list it:
> >>>>>> http://hg.openjdk.java.net/jdk6/jdk6/raw-file/tip/README-builds.html#MBE
> >>>>>> 
> >>>>> 
> >>>>> Linux-sparc is not one of Oracle's supported OpenJDK platforms.
> >>>>> However AFAIK there are people in the community building OpenJDK on
> >>>>> Linux-sparc using the Zero interpreter. I don't know if this would
> >>>>> affect them but it still seems to me that we should be careful not
> >>>>> to break other people's builds.
> >>>>> 
> >>>> 
> >>>> With FOSDEM and subsequent security errata, this got pushed to side.
> >>>> 
> >>>> Sorry for the delay. I've created a new webrev which contains a special
> >>>> case for the Sparc family (on Linux):
> >>>> 
> >>>> http://cr.openjdk.java.net/~dbhole/GCC-4.7-JDK8.01/
> >>> 
> >>> Where is ARCH_FAMILY being set?
> >>> 
> >>> David
> >>> 
> >>> 
> >>>> If it is okay for push, please go ahead and push it (I don't have commit
> >>>> access). I will then propose it for 7u.
> >>>> 
> >>>> Thanks,
> >>>> Deepak
> >>>> 
> >>>>> David
> >>>>> -----
> >>>>> 
> >>>>>> The option seemed more like a relic from Solaris + SPARC config rather
> >>>>>> than a requirement for Linux + SPARC.
> >>>>> 
> >>>>> 
> >>>>> 
> >>>>>> Cheers,
> >>>>>> Deepak
> >>>>>> 
> >>>>>>> David
> >>>>>>> 
> >>>>>>> On 31/01/2012 1:20 AM, Deepak Bhole wrote:
> >>>>>>>> Hi,
> >>>>>>>> 
> >>>>>>>> JDK builds currently fail with GCC 4.7 due to its stricter option
> >>>>>>>> checking.
> >>>>>>>> 
> >>>>>>>> GCC 4.6 and prior ignored invalid options -- GCC 4.7 does not.
> >>>>>>>> Certain
> >>>>>>>> files in JDK supply the -mimpure-text option to GCC. This option
> >>>>>>>> is only
> >>>>>>>> valid on SPARC[1,2]. As a result, GCC 4.7 throws an error during
> >>>>>>>> build
> >>>>>>>> on Linux (I suppose .
> >>>>>>>> 
> >>>>>>>> This patch removes the option:
> >>>>>>>> http://cr.openjdk.java.net/~dbhole/GCC-4.7-JDK8.00
> >>>>>>>> 
> >>>>>>>> 1: http://gcc.gnu.org/onlinedocs/gcc-3.3.6/gcc/SPARC-Options.html
> >>>>>>>> 2:
> >>>>>>>> http://gcc.gnu.org/onlinedocs/gcc-3.3.6/gcc/i386-and-x86_002d64-Options.html
> >>>>>>>> 
> >>>>>>>> 
> >>>>>>>> If OK for push, please feel free to do so (I don't have commit
> >>>>>>>> access).
> >>>>>>>> 
> >>>>>>>> Cheers,
> >>>>>>>> Deepak
>