Error while building FTW Patch

[Eshan Dhawan]

Hello Everyone, 
I wanted know if anyone was able to figure out the reason for this error ?? 

-Eshan 
> On 27-Aug-2020, at 1:01 AM, Joel Sherrill <joel at rtems.org> wrote:
> 
> 
> I think there are two threads on this but I wanted to make sure Chris noticed it.
> 
> Master of rtems-source-builder is broken. Backing up a commit or two works.
> 
> --joel
> 
>> On Wed, Aug 26, 2020 at 10:18 AM Eshan Dhawan <eshandhawan51 at gmail.com> wrote:
>> For the RSB master error sent a mail just few minutes ago 
>> 
>> 
>> > On 26-Aug-2020, at 8:43 PM, Gedare Bloom <gedare at rtems.org> wrote:
>> > 
>> > This looks unrelated. See if the plain toolchain without your patch
>> > fails in the same way.
>> > 
>> >> On Tue, Aug 25, 2020 at 12:58 PM Eshan Dhawan <eshandhawan51 at gmail.com> wrote:
>> >> 
>> >> hello everyone,
>> >> I after building arm-rtems6 toolchain with my ftw patch
>> >> when i build rtems i receive this error
>> >> The error comes on the patches that were earlier version of the successfully tested patch:)
>> >> 
>> >> Error log :
>> >> /home/eshan/development/rtems/kernel/rtems/c/src/../../testsuites/sptests/spcxx01/init.cc: In function 'void test_future()':
>> >> /home/eshan/development/rtems/kernel/rtems/c/src/../../testsuites/sptests/spcxx01/init.cc:64:20: error: variable 'std::future<int> f' has initializer but incomplete type
>> >>   64 |   std::future<int> f = std::async(std::launch::async, []{ return 12358; });
>> >>      |                    ^
>> >> /home/eshan/development/rtems/kernel/rtems/c/src/../../testsuites/sptests/spcxx01/init.cc:64:74: error: invalid use of incomplete type 'class std::future<int>'
>> >>   64 | d::future<int> f = std::async(std::launch::async, []{ return 12358; });
>> >>      |                                                                      ^
>> >> 
>> >> In file included from /home/eshan/development/rtems/kernel/rtems/c/src/../../testsuites/sptests/spcxx01/init.cc:32:
>> >> /home/eshan/development/rtems/6/lib/gcc/arm-rtems6/10.2.1/include/c++/future:125:11: note: declaration of 'class std::future<int>'
>> >>  125 |     class future;
>> >>      |           ^~~~~~
>> >> /home/eshan/development/rtems/6/lib/gcc/arm-rtems6/10.2.1/include/c++/future: At global scope:
>> >> /home/eshan/development/rtems/6/lib/gcc/arm-rtems6/10.2.1/include/c++/future:189:5: error: 'std::future<typename std::__invoke_result<typename std::decay<_Tp>::type, typename std::decay<_Args>::type ...>::type> std::async(std::launch, _Fn&&, _Args&& ...) [with _Fn = test_future()::<lambda()>; _Args = {}; typename std::__invoke_result<typename std::decay<_Tp>::type, typename std::decay<_Args>::type ...>::type = int]', declared using local type 'test_future()::<lambda()>', is used but never defined [-fpermissive]
>> >>  189 |     async(launch __policy, _Fn&& __fn, _Args&&... __args);
>> >>      |     ^~~~~
>> >> Makefile:12245: recipe for target 'spcxx01/spcxx01-init.o' failed
>> >> make[5]: *** [spcxx01/spcxx01-init.o] Error 1
>> >> make[5]: Leaving directory '/home/eshan/development/rtems/kernel/xilinx_zynq_a9_qemu/arm-rtems6/c/xilinx_zynq_a9_qemu/testsuites/sptests'
>> >> Makefile:663: recipe for target 'sptests' failed
>> >> make[4]: *** [sptests] Error 2
>> >> make[4]: Leaving directory '/home/eshan/development/rtems/kernel/xilinx_zynq_a9_qemu/arm-rtems6/c/xilinx_zynq_a9_qemu/testsuites'
>> >> Makefile:1222: recipe for target 'testsuites' failed
>> >> make[3]: *** [testsuites] Error 2
>> >> make[3]: Leaving directory '/home/eshan/development/rtems/kernel/xilinx_zynq_a9_qemu/arm-rtems6/c/xilinx_zynq_a9_qemu'
>> >> Makefile:716: recipe for target 'all-recursive' failed
>> >> make[2]: *** [all-recursive] Error 1
>> >> make[2]: Leaving directory '/home/eshan/development/rtems/kernel/xilinx_zynq_a9_qemu/arm-rtems6/c/xilinx_zynq_a9_qemu'
>> >> Makefile:289: recipe for target 'all-recursive' failed
>> >> make[1]: *** [all-recursive] Error 1
>> >> make[1]: Leaving directory '/home/eshan/development/rtems/kernel/xilinx_zynq_a9_qemu/arm-rtems6/c'
>> >> Makefile:410: recipe for target 'all-recursive' failed
>> >> make: *** [all-recursive] Error 1
>> >> ~/development/rtems/kernel/xilinx_zynq_a9_qemu              01:25:05  eshan
>> >> 2 ❯
>> >> 
>> >> --
>> >> Thanks
>> >> - Eshan
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