[OE-core] [PATCH 18/18] cmake-native:convert source file to relative path

[Khem Raj]

On Thu, Mar 10, 2016 at 3:41 PM, Hongxu Jia <hongxu.jia at windriver.com> wrote:
> On 03/10/2016 04:08 PM, Khem Raj wrote:
>
> We should submit these kind of changes upstream first and get an opinion
> before forking like this
>
>
> OK, I will have a try.

IMO this could be an improvement in all packages that you have
modified, so submit them all


>
>>
>> +Although there is CMAKE_USE_RELATIVE_PATHS, but upstream
>> +explicitly did not support relative path.
>> +In git://cmake.org/cmake.git
>> +...
>> +commit 1335992c8f4e8b96f1a21d5dcc7d65a9fbd84c11
>> +Author: Stephen Kelly <steveire at gmail.com>
>> +Date:   Mon Jun 1 19:56:46 2015 +0200
>> +
>> +    Remove CMAKE_USE_RELATIVE_PATHS variable.
>> +...
>> +The reason is in https://cmake.org/Wiki/CMake_FAQ
>> +(Why does CMake use full paths, or can I copy my build tree?)
>
>
> Currently, The upstream explicitly do not support it.
>
> //Hongxu
>
>> +
>> +But oe-core need the source file path relative while compiling
>> +to avoid build path issue. The fix partly refer the above commit,
>> +but in order to minimize the influence, it only tweak gcc compiling
>> +rule in generated Makefile (With "Building ** object" message).
>
>
>