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Re: [Xen-devel] Building xtf on older distros

On 28/09/2017 09:45, Wei Liu wrote:
> On Thu, Sep 28, 2017 at 02:43:57PM +1300, Glenn Enright wrote:
>> Hi there
>> When building the xen testing framework on CentOS6, I see the below issue. I
>> see similar issues with CentOS7 and other distros with older tool chains.
>> The only one that built cleanly for me was Ubuntu 1604.
>> Some workarounds (disabling the -W options) let it get a bit further but I
>> hit other issues.
>> Andrew separately mentioned this may be related to C99 initialisation, which
>> sounds about right.
>> At the moment I'm doing a static build and moving the binaries where I need
>> to run the tests, which is fine, but it would be nice to have a native c6
>> build working to match the rest of my existing test infra.
>> Not a C dev, but happy to test any/all things.
>> Not list subscribed so please include in CC.
>> Regards, Glenn
>> http://rimuhosting.com
>> ...
>> gcc -pipe -I/root/gle/xtf/include -I/root/gle/xtf/arch/x86/include -MMD -MP
>> -Wall -Wextra -Werror -std=gnu99 -Wstrict-prototypes -O3 -g -fno-common
>> -fno-asynchronous-unwind-tables -fno-strict-aliasing -fno-stack-protector
>> -fno-pic -ffreestanding -mno-red-zone -mno-sse -Wno-unused-parameter
>> -Winline -m64  -DCONFIG_ENV_pv64 -include arch/config.h -c
>> /root/gle/xtf/arch/x86/setup.c -o /root/gle/xtf/arch/x86/setup-pv64.o
>> cc1: warnings being treated as errors
>> /root/gle/xtf/arch/x86/grant_table.c: In function ‘arch_map_gnttab’:
>> /root/gle/xtf/arch/x86/grant_table.c:19: error: implicit declaration of
>> function ‘_Static_assert’
>> make[1]: *** [/root/gle/xtf/arch/x86/grant_table-pv64.o] Error 1
>> make[1]: *** Waiting for unfinished jobs....
>> make[1]: Leaving directory `/root/gle/xtf/tests/cpuid'
>> make: *** [all] Error 2
>> # gcc --version
>> gcc (GCC) 4.4.7 20120313 (Red Hat 4.4.7-18)
>> Copyright (C) 2010 Free Software Foundation, Inc.
>> This is free software; see the source for copying conditions.  There is NO
> Please try the following patch:


Sadly not.  There will be complaints of statements with no effect.

Beyond _Static_assert(), there are some anonymous union initialisation
problems, register scheduling problems, and binutils lack of
understanding of vmfunc.  I've a series in progress.


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