[CMake] Creating RPMs from failing projects with CPack

[Domen Vrankar]

> I have a slightly unusual question (I guess). Is it possible somehow to force CPack to produce RPM files from projects that have build problems?
>
> We use CMake in our nightly build system to test the latest changes in our software. When a build problem occurs we don't want the whole build to fail. To this end, we run the build with:
>
> make -k
> make -k install/fast
>
> This second target executes the installation no matter what. (We set all our build results as "optional installations".) So that at least the "successful part" of the build would become visible on a shared filesystem.
>
> Now, I'd like to do something similar with CPack. To make it behave like "install/fast" does. All in all, I'd like to tell it to use this "install/fast" target while creating the package instead of the "install" target. Is there any way of making this happen?

I don't know of any clean way to do this but you could write an
install script (let's name it install_k.sh):

#!/bin/bash
make -k install/fast
exit 0

Then your would add two CPACK variables to your CMakeLists.txt:

#set(CPACK_RPM_COMPONENT_INSTALL "ON") <- I'll explain this commented line later
set(CPACK_INSTALL_CMAKE_PROJECTS "")
set(CPACK_INSTALL_COMMANDS "${CMAKE_CURRENT_SOURCE_DIR}/install_k.sh")

And instead of packaging with "make package" command execute "cpack -G RPM".

However there is an additional problem that this hack only works for
monolithic packages (that's why I commented out
CPACK_RPM_COMPONENT_INSTALL in example above) so you will have to
disable component packages generation if you are using it.

Regards,
Domen

2016-01-20 11:26 GMT+01:00 Attila Krasznahorkay
<attila.krasznahorkay at gmail.com>:
> Dear All,
>
> I have a slightly unusual question (I guess). Is it possible somehow to force CPack to produce RPM files from projects that have build problems?
>
> We use CMake in our nightly build system to test the latest changes in our software. When a build problem occurs we don't want the whole build to fail. To this end, we run the build with:
>
> make -k
> make -k install/fast
>
> This second target executes the installation no matter what. (We set all our build results as "optional installations".) So that at least the "successful part" of the build would become visible on a shared filesystem.
>
> Now, I'd like to do something similar with CPack. To make it behave like "install/fast" does. All in all, I'd like to tell it to use this "install/fast" target while creating the package instead of the "install" target. Is there any way of making this happen?
>
> Cheers,
>               Attila
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