Re: [CMake] Detailed graphviz graph?

[Eric Noulard]

Le sam. 6 oct. 2018 à 18:15, Jan Wielemaker  a écrit :

> On 03/10/18 09:53, Eric Noulard wrote:
> >
> > Are those three add_custom_xxx in the same directory?
> > DEPENDS for custom_xxx do not cross directory.
>
> So this was not the problem. The problem was that on the Mac I had build
> the system before using the autoconf/make suite, which had created
> `swipl.prc` in the source tree. Now, this is the second time I've been
> fooled by this:
>

Good to know you've found the issue.


> If a custom command has a DEPENDS, this points at the
> CMAKE_CURRENT_SOURCE_DIR if the file exists there and at the
> CMAKE_CURRENT_BINARY_DIR otherwise.  This makes sense, but
> easily leads to things that are hard to figure out ...
>

I've already been bitten by that kind of issue.
Now when I want to be "extra-sure" of my source/build tree state I:

- remove the build tree completely
- use the VCS at hand to clean the source tree, e.g. with git
  git -fdx being in the root source dir should remove all non versioned
files (or directories) including ignore ones.
(there are more interesting feature to git-clean:
https://git-scm.com/docs/git-clean)

Then you can be sure to have a "clean" starting point.
Alternatively checking out the project in a separate place works as well.

Thanks. In particular for pointing at Ninja's tools for figuring out
> dependencies.
>

You are welcome.

-- 
Eric
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Re: [CMake] Dependencies to protobuf sources

[Stephan Menzel]

On Sat, Oct 6, 2018 at 10:58 AM Stephan Menzel 
wrote:

>
> protobuf_generate(TARGET my_protobuf_lib)
>
>
Well, it seems like this was the culprit all along. There is a bug in
protobuf's usage of the add_custom_command. Appears this is known and fixed
by:
https://github.com/protocolbuffers/protobuf/commit/411018e3fb6ca5d7610ee48139ecaef1033746e3

but apparently not in their latest release tag version 3.6.1. Seems like
it's been there for ages, which makes me wonder how this could have gone
unnoticed for so long.

Anyway, fixing this locally in my installed cmake scripts fixes
the problem. Above command workes nicely now. So it didn't have anything to
do with auto-uic being broken. Onto the next one!

Cheers,
Stephan
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