I have difficulties building pl on ppc64. The previous build (a few releases back) has been fine, and i386, x86_64, ppc are ok, too. The koji build page is: http://koji.fedoraproject.org/koji/taskinfo?taskID=278425 The 64-bit ppc arch seems to cause a lot of trouble compared to the 32-bit arch and x86_64. Is there any specific reason for this? In any case I hope someone can help fixing the issue.
BTW. I would welcome a co-maintainer for the pl package, preferably someone with experience on archs other that i386.
Gérard Milmeister <gemi <at> bluewin.ch> writes:
I have difficulties building pl on ppc64. The previous build (a few releases back) has been fine, and i386, x86_64, ppc are ok, too. The koji build page is: http://koji.fedoraproject.org/koji/taskinfo?taskID=278425
Judging by the warnings about aliasing violations, the first thing I'd try is adding -fno-strict-aliasing to the CFLAGS.
Kevin Kofler
On Thu, 2007-12-06 at 11:57 +0000, Kevin Kofler wrote:
Judging by the warnings about aliasing violations, the first thing I'd try is adding -fno-strict-aliasing to the CFLAGS.
These warnings appear on all platforms, but only ppc64 segfaults.
Gérard Milmeister <gemi <at> bluewin.ch> writes:
These warnings appear on all platforms, but only ppc64 segfaults.
This doesn't exclude an aliasing problem, aliasing bugs often only lead to actually invalid code on some architectures, it all depends on how the GCC optimizers process the code.
Kevin Kofler
Gérard Milmeister writes:
On Thu, 2007-12-06 at 11:57 +0000, Kevin Kofler wrote:
Judging by the warnings about aliasing violations, the first thing I'd try is adding -fno-strict-aliasing to the CFLAGS.
These warnings appear on all platforms, but only ppc64 segfaults.
If you get any such warnings, your program is almost certainly broken. -fno-strict-aliasing is a way to get your program working until it's fixed.
Andrew.
On Thu, 2007-12-06 at 13:28 +0000, Andrew Haley wrote:
If you get any such warnings, your program is almost certainly broken. -fno-strict-aliasing is a way to get your program working until it's fixed.
I just tried to build with -fno-strict-aliasing, there are no warnings now, but the problem on ppc64 remains.
Gérard Milmeister <gemi <at> bluewin.ch> writes:
On Thu, 2007-12-06 at 13:28 +0000, Andrew Haley wrote:
If you get any such warnings, your program is almost certainly broken. -fno-strict-aliasing is a way to get your program working until it's fixed.
I just tried to build with -fno-strict-aliasing, there are no warnings now, but the problem on ppc64 remains.
Just resurrecting this thread: the problem with building swi-prolog on ppc64 remains, and neither Gérard Milmeister (the maintainer) nor I (new co-maintainer) have any idea what's going on. I've tried a variety of CFLAGS including "-O0" and the build always dies with a segfault when running the newly-built pl interpreter as part of the build process. Here's a recent failed build from Koji:
http://koji.fedoraproject.org/koji/taskinfo?taskID=472959
Anyone with any idea what's going on?
Thanks,
MEF
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