Patch to fix build breakage with GCC 4.7 (original) (raw)

David Holmes david.holmes at oracle.com
Wed Feb 29 23:47:30 UTC 2012

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!

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.

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 ARCHFAMILY 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-x86002d64-Options.html

If OK for push, please feel free to do so (I don't have commit access). Cheers, Deepak

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