Re: [Qemu-devel] [RISU PATCH 06/10] configure: support CPPFLAGS

["Alex Bennée" <alex.bennee@linaro.org>]

Dave Martin <Dave.Martin@arm.com> writes:

> On Tue, Nov 07, 2017 at 03:05:54PM +0000, Alex Bennée wrote:
>> Useful for accessing API's that are still brewing, e.g:
>>
>>   CROSS_PREFIX=aarch64-linux-gnu- \
>>     CPPFLAGS=-I/home/alex/lsrc/qemu/risu.git/sve-headers/include \
>>     ../configure
>>
>> Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
>> ---
>>  README    | 6 ++++++
>>  configure | 1 +
>>  2 files changed, 7 insertions(+)
>>
>> diff --git a/README b/README
>> index 9946e6e..fbe408d 100644
>> --- a/README
>> +++ b/README
>> @@ -26,6 +26,12 @@ Most useful is
>>     need this if you're not building on the target system
>>     (Example: CROSS_PREFIX=arm-linux-gnueabihf- )
>>
>> +Another useful flag is
>> + CPPFLAGS= which specified pre-processor flags, usually -I statements
>> +   for specifying extra include paths. Use this is you need something
>
> s/is/if/
>
>> +   from new kernel headers not installed on your system.
>> +   (Example: CPPFLAGS=-I/path/to/sve-kernel-headers/include)
>> +
>
> You should probably point out that the path should refer to headers
> installed by running 'make headers_install' in the Linux source.  This
> means we really test the uapi headers properly, and I don't get spurious
> bug reports about bad headers ;)

Will do. Thanks.
>
> [...]
>
> Cheers
> ---Dave


--
Alex Bennée