[CMake] Continue install after a failure

[David Cole]

On Tue, Oct 23, 2012 at 2:53 AM, Petr Kmoch <petr.kmoch at gmail.com> wrote:
> On Mon, Oct 22, 2012 at 4:58 PM, David Cole <david.cole at kitware.com> wrote:
>>
>> On Mon, Oct 22, 2012 at 3:22 AM, Petr Kmoch <petr.kmoch at gmail.com> wrote:
>> > Hi Andreas,
>> >
>> > thanks for your tip. Unfortunately, 'make -k install' doesn't help, as
>> > the
>> > entire install step is a single command (cmake -P ...), so once this
>> > fails,
>> > there is no other command make could continue with. Is there no way to
>> > do
>> > this natively in cmake?
>> >
>> > I could (in theory) add OPTIONAL to all install() commands, but that has
>> > the
>> > problem of being absolutely silent when a file is not found, and I'd
>> > need at
>> > least a message or warning. Is cmake really all-or-nothing in this
>> > aspect,
>> > or does anyone know a feature I'm overlooking?
>> >
>> > Thanks for any help.
>> >
>> > Petr
>> >
>> >
>> > On Sat, Oct 20, 2012 at 12:46 PM, Andreas Pakulat <apaku at gmx.de> wrote:
>> >>
>> >> Hi,
>> >>
>> >> On Sat, Oct 20, 2012 at 11:39 AM, Petr Kmoch <petr.kmoch at gmail.com>
>> >> wrote:
>> >> > when running the install step of a CMake-generated buildsystem (i.e.
>> >> > 'make
>> >> > install' or building the VS project INSTALL), the run terminates
>> >> > after
>> >> > the
>> >> > first failure (e.g. when it cannot find a file which is to be
>> >> > installed). Is
>> >> > there a way to globally change this behaviour so that the error is
>> >> > reported
>> >> > (perhaps as a warning), but the install step goes on?
>> >>
>> >> For Makefile Generator you can run make -k install, that way make
>> >> keeps on going even when errors occur. No idea about VS, NMake, Ninja
>> >> or XCode generators probably depends on wether the respective tool has
>> >> a switch for continuing if errors occur.
>> >>
>> >> Andreas
>> >
>> >
>> >
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>>
>> CMake is all-or-nothing with respect to an install tree. If the cmake
>> install script hits a "FATAL_ERROR" message then it stops and will not
>> continue beyond that point...
>>
>> The best way to "Continue install after a failure" is to eliminate the
>> failure, and try again.
>
>
> Would you accept a patch giving control over this behaviour? Something like
> a boolean variable CMAKE_INSTALL_STOP_ON_ERROR (the default being TRUE, of
> course).
>
> Petr

Why is patching CMake easier than fixing your project? And how long
are you going to let your own project's install tree be broken before
you do fix it?

I don't like the idea of a half-installed (or any fraction less than
1.0) bit of software...

Perhaps others will chime in and we can get a sense of how folks weigh
in on this issue.

I will consider any patch that is offered for consideration... but
I'll be honest: I'd never use this feature myself.


David