Re: [Boost-users] Process extension compile issue.

Subject: Re: [Boost-users] Process extension compile issue.
From: dinesh kumar (dineshkumar02_at_[hidden])
Date: 2017-06-15 10:53:16

Hi Joël Lamotte,

Thank you very much for pointing me in the right direction, and I still see
that the documentation here
<http://www.boost.org/doc/libs/1_64_0/doc/html/boost_process/design.html#boost_process.design.plat_ext>
needs better improvement and I will try to raise a request to improve the
docs.

--Dinesh

On Thu, Jun 15, 2017 at 3:44 PM, Klaim - Joël Lamotte via Boost-users <
boost-users_at_[hidden]> wrote:

>
> On 15 June 2017 at 12:10, Klaim - Joël Lamotte <mjklaim_at_[hidden]> wrote:
>
>>
>>> On Wed, Jun 14, 2017 at 1:35 AM, dinesh kumar <dineshkumar02_at_[hidden]>
>>> wrote:
>>>
>>>> Hi Team,
>>>>
>>>> Greetings for the day.
>>>>
>>>> I am currently facing the problem with process extension as documented
>>>> here
>>>> <http://www.boost.org/doc/libs/1_64_0/doc/html/boost_process/design.html#boost_process.design.plat_ext>
>>>> .
>>>> I am testing the boost 1.64 version macOS, and unable to use the below
>>>> functionality.
>>>>
>>>> void test() {
>>>>
>>>>     cout << "On Setup" << endl;
>>>>
>>>> }
>>>>
>>>> int main() {
>>>>
>>>> std::function<void(void)> on_st = test;
>>>>
>>>> bp::child c2("ls", boost::process::extend::on_setup(on_st));
>>>>
>>>> }
>>>>
>>>> *Error: *
>>>>
>>>> /usr/local/include/boost/process/detail/handler.hpp:33:9: No matching
>>>> function for call to object of type 'std::__1::function<void ()>'
>>>>
>>>> Would somebody guide me here, please?
>>>>
>>>>
>> The  documentation[1] states:
>> "The required signature is void(Exec &), where Exec is a template
>> parameter".
>>
>> on_st's type do not match this requirement.
>>
>> [1]: http://www.boost.org/doc/libs/1_64_0/doc/html/boost/pro
>> cess/extend/on_setup.html
>>
>
> The following change should work (I didn't try but the documentation have
> a similar exemple there:
> http://www.boost.org/doc/libs/1_64_0/doc/html/boost_process/
> extend.html#boost_process.extend.error
>
> void test() {
>
>     cout << "On Setup" << endl;
>
> }
>
> int main() {
>
> auto on_st = [](auto exec){ test(); };
>
> bp::child c2("ls", on_setup(on_st));
>
> }
>
> Joël Lamotte
>
>
>
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>

-- 
Regards,
Dinesh
manojadinesh.blogspot.com