Re: [PATCH v2] x86, selftests: Add sigreturn_32 selftest

From: Andy Lutomirski
Date: Mon Mar 09 2015 - 13:49:09 EST

On Mon, Mar 9, 2015 at 9:48 AM, Ingo Molnar <mingo@xxxxxxxxxx> wrote:
> now I get this build failure:
> make[1]: Entering directory
> '/home/mingo/tip/tools/testing/selftests/x86'
> gcc -m32 -o sigreturn_32 -O2 -g -std=gnu99 -pthread -Wall sigreturn.c -lrt -ldl
> In file included from /usr/include/time.h:27:0,
> from sigreturn.c:13:
> /usr/include/features.h:374:25: fatal error: sys/cdefs.h: No such file or directory
> # include <sys/cdefs.h>
> ^
> compilation terminated.
> Makefile:18: recipe for target 'sigreturn_32' failed
> make[1]: *** [sigreturn_32] Error 1

It builds for me on Ubuntu.

It looks like your 32-bit build setup is broken. The line that's
failing to compile is:

#include <time.h>

Are you missing 32-bit headers? This test *can't* be run as a 64-bit binary.

We could enable it to work as a 64-bit binary by merging this:

but it would still be nice to build the 32-bit version. I could try
to rig up some makefile magic to skip building it if 32-bit headers
are missing.


> :-/
> Thanks,
> Ingo

Andy Lutomirski
AMA Capital Management, LLC
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