Re: [Xen-devel] Build problems with xen 4.7

[Andrew Cooper <andrew.cooper3@xxxxxxxxxx>]

On 01/12/15 19:40, Olaf Hering wrote:
> On Tue, Dec 01, M A Young wrote:
>
>> It happens if CFLAGS is set to anything as a environment variable, eg.
>> export CFLAGS=" "
>> make dist-xen
> This never worked.

Works for me with CentOS-based RPM builds. 
(https://github.com/xenserver/xen-4.6.pg/blob/master/master/builder-makefiles.patch#L413
from XenServer)

>  I have this in xen.spec to workaround the way
> %configure is implemented in rpm:
>
> %configure <whatever>
> unset CFLAGS
> unset CXXFLAGS
> unset FFLAGS
> unset LDFLAGS
> make <whatever>

Requiring these unset's is definitely buggy behaviour, and should be fixing.

For me, the example given by Michael breaks even earlier.

andrewcoop@andrewcoop:/local/xen.git/xen$ CFLAGS=" " make -j4 -s
 __  __            _  _    __    _                  
 \ \/ /___ _ __   | || |  / /_  / |   _ __  _ __ ___
  \  // _ \ '_ \  | || |_| '_ \ | |__| '_ \| '__/ _ \
  /  \  __/ | | | |__   _| (_) || |__| |_) | | |  __/
 /_/\_\___|_| |_|    |_|(_)___(_)_|  | .__/|_|  \___|
                                     |_|            
Fields of 'compat_gnttab_cache_flush' not found in 'compat/grant_table.h'
Makefile:70: recipe for target 'compat/.xlat/grant_table.h' failed
make[2]: *** [compat/.xlat/grant_table.h] Error 1
make[2]: *** Waiting for unfinished jobs....
Fields of 'compat_mem_access_op' not found in 'compat/memory.h'
Makefile:70: recipe for target 'compat/.xlat/memory.h' failed
make[2]: *** [compat/.xlat/memory.h] Error 1
Makefile:104: recipe for target '/local/xen.git/xen/xen' failed
make[1]: *** [/local/xen.git/xen/xen] Error 2
Makefile:29: recipe for target 'build' failed
make: *** [build] Error 2


~Andrew

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