Re: Some build failures of sparse 0.6.0 on Debian buildds

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On Thu, Jan 31, 2019 at 09:58:56AM +0100, Uwe Kleine-König wrote:
> Hello,
> 
> I packaged sparse 0.6.0 for Debian and some architectures failed to
> build the package because of a failure of the preprocessor/predef-lp64.c
> test. Affected are:
> 
> 	mips
> 	mipsel
> 	powerpc
> 
> The failure looks as follows:
> 
> 	  TEST    predefined macros for LP64 (preprocessor/predef-lp64.c)
> 		Using command       : test-linearize -Wno-decl -m64 $file

Note the '-m64'.
These tests are some ugly hack from me to limit the amount of
assumptions made in them. They shouldn't run an architectures
that doesn't support a flag '-m64' because the test in them
are only relevant for LP64. I'll see what I can do.

> I didn't look into details (yet).
> 
> There are a few more failures, see at
> 
> 	https://buildd.debian.org/status/package.php?p=sparse&suite=sid

I'll look at them.
 
> For the m68k I already sent a patch. On Hurd the problem is:
> 
> 	env CHECK=./sparse ./cgcc -no-compile memops.c
> 	./cgcc: invalid specs: gnu

Does 'uname -m' or 'uname -s' returns 'gnu' on Hurd?

> and on x32 I got:
> 
> 	/usr/bin/ld: compile-i386.o: relocation R_X86_64_32S against `.data' can not be used when making a PIE object; recompile with -fPIC
> 	/usr/bin/ld: final link failed: nonrepresentable section on output
> 	collect2: error: ld returned 1 exit status

I didn't had this when testing on x32 but I see that here the compiler
is called here with:
	-specs=/usr/share/dpkg/pie-link.specs 
	-Wl,-z,relro -Wl,-z,now
The first one is clearly part of the problem, maybe in combination
with the other two.
>From where do they come? Why? It's not used for amd64 and other archs.
This doesn't seem at all like a problem specific to sparse, surely other
packages have the same problem on 86-x32.

Thanks for this report.
-- Luc



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