[CMake] Dependency for launching an application

[Andreas Haferburg]

Yay, that is almost what I want. Except that I'd like the launch target to behave exactly like the 
parent target: When I select the project in Visual Studio, I'd like to press F7 to build it and F5 
to run it (with the debugger attached). When using add_custom_target(), the exe is started at build 
time. I've tried add_executable(.. IMPORTED), but it doesn't create a VS project.

Regards,
Andreas


On 08.02.2013 15:37, Eduard_Hein at McAfee.com wrote:
> You need an intermediary layer that depends on parent and child and
> wraps execution of parent.
>
> Something like this (untested):
>
> add_library(common MyFancyString.cpp)
>
> add_executable(parent parent_main.cpp)
> target_link_libraries(parent common.lib)
>
> add_executable(child child_main.cpp)
> target_link_libraries(child common.lib)
>
> add_custom_target(launch "${CMAKE_CURRENT_BINARY_DIR}/parent.exe")
> add_dependencies(launch parent child)
>
> Cya, Ed
>
> On 02/08/2013 03:16 PM, Andreas Haferburg wrote:
>> Sure. Example:
>>
>> add_library(common MyFancyString.cpp)
>>
>> add_executable(parent parent_main.cpp)
>> target_link_libraries(parent common.lib)
>>
>> add_executable(child child_main.cpp)
>> target_link_libraries(child common.lib)
>> add_dependencies(parent child)
>>
>> Now I make a change to MyFancyString.cpp, select the parent project, and
>> hit F5. Both executables use MyFancyString, so both need to be re-built.
>>
>> What happens is that common is built, then child, then parent, then
>> parent is executed.
>> What I'd like to happen is that common is built, then child+parent are
>> being built concurrently, and as soon as both are done, parent is executed.
>>
>> I hope it's clearer now.
>>
>> Regards,
>> Andreas
>>
>>
>>
>> On 08.02.2013 12:51, Nick Overdijk wrote:
>>> Well cmake will take care of that if you target_link_library(common),
>>> right?
>>>
>>> On 2013-08-02, at 12:50:13 , Andreas Haferburg wrote:
>>>
>>>> Right, sorry. I should have mentioned that they both depend on some
>>>> library common.lib. When that library has to be rebuilt, both exes
>>>> need to be rebuilt, too.
>>>>
>>>> Andreas
>>>>
>>>>
>>>> On 08.02.2013 12:21, Nick Overdijk wrote:
>>>>> Can't you only launch parent.exe in VS and remove the dependency?
>>>>>
>>>>> On 2013-08-02, at 12:19:56 , Andreas Haferburg wrote:
>>>>>
>>>>>> In our build, we have two executables, parent.exe launches
>>>>>> child.exe as a child process. ATM the build is set up with
>>>>>> add_dependencies(parent child). So when using F5 in Visual Studio,
>>>>>> child.exe is built first, then parent.exe, then parent.exe is
>>>>>> launched. Is it possible to set this up such that child.exe and
>>>>>> parent.exe are built in parallel before launching parent?
>>>>>>
>>>>>> Regards
>>>>>> Andreas
>>>>>> --
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>>>>