Re: [Reduce-algebra-developers] build failure on GNU/Linux PowerPC-64

[Nelson H. F. B. <be...@ma...>]

On Sat, 12 May 2012 09:21:24 -0600 (MDT), I reported a failure to
build REDUCE on PowerPC-64 GNU/Linux Gentoo 2.0.3:

>> +++ Image file ... can not be read

Rainer kindly responded on Mon, 21 May 2012 20:57:17 +0200 (CEST)

>> This looks too short to me. I'd expect it to be several MB.  Could you please 
>> check the log file of the previous step, ie.
>>
>> cslbuild/powerpc64-unknown-linux-gnu-nogui/csl/buildlogs/bootstrapreduce.log
>>
>> It should end with a line
>> 
>>  "**** **** REDUCE FULLY REBUILD **** ****"

I've been swamped this week with other things, so this reply is late.

I've just looked at the bootstrapreduce.log file: it is 4613 lines
long and ends with this text (empty lines suppressed):

	+++ c!:ctestand redefined
	c!:ctestand
	c!:ctestand
	+++ c!:ctestor redefined
	c!:ctestor
	c!:ctestor
	nil
	nil
	nil
	nil
	nil

On a Solaris 10 SPARC system where the build succeeded, that log file
is 49,128 lines long, and ends with the "REDUCE FULLY REBUILD" message
[which probably should say "REBUILT" instead of "REBUILD"].

When I compare the two logs, I notice that the Solaris one says

	Compile: c!-end1
	+++ c!-end1 compiled, 445 + 220 bytes

whereas the failing PowerPC-64 one says

	Compile: c!-end1
	Memory access violation detected

One might suspect a compiler code-generation error here, but as I
reported, the problem persists with gcc 4.3.4, 4.4.5, and 4.5.3.

No other C compiler is available on that system.  [I've tried to build
MANY different gcc releases on that machine, but none has ever
succeeded; I've done more than 2000 gcc builds in the last few years.]

According to the Gentoo package Web site, there is no llvm compiler
port for PowerPC-64.  The Open64 compiler family doesn't support
PowerPC at all.

Today, I retried a fresh build with all gcc compiler optimizations
suppressed (-O2 replaced -g in CFLAGS settings in Makefiles).  The
failure is exactly as before.

Further ideas?  [Is it time to pull a fresh source snapshot?]

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