RFR(XS): 8161262: Fix jdk build with gcc 4.1.2: -fno-strict-overflow not known.

[Lindenmaier, Goetz]

Hi Andrew, 

thanks for the quick reply.

I wanted to use the syntax I know from 
  hotspot/make/linux/makefiles/gcc.make
I think it's easier to understand if it's everywhere noted down
similarly.

Best regards,
  Goetz

> -----Original Message-----
> From: Andrew Haley [mailto:aph at redhat.com]
> Sent: Mittwoch, 13. Juli 2016 11:00
> To: Lindenmaier, Goetz <goetz.lindenmaier at sap.com>; jdk7u-
> dev at openjdk.java.net
> Subject: Re: RFR(XS): 8161262: Fix jdk build with gcc 4.1.2: -fno-strict-
> overflow not known.
> 
> On 13/07/16 09:53, Lindenmaier, Goetz wrote:
> > we are building the jdk7u ppc port on gcc 4.1.2.  This fails since
> > "8147466: Add -fno-strict-overflow to
> IndicRearrangementProcessor{,2}.cpp"
> > as the gcc flag introduced there is not known to gcc 4.1.2.
> > I just guard it by the compiler version.
> >
> > Please review this change.
> > http://cr.openjdk.java.net/~goetz/wr16/8161262-jdkGcc412/webrev.01/
> 
> This is OK, but do we really need to do it this way?  If you're going
> to launch a shell and test the result, you might as well launch GCC
> with -fno-strict-overflow and test the result of that instead.
> 
> Andrew.