[CMake] Strange behavior with Nightly builds

[Stefan Reuschl]

Am 06.06.2012, 08:57 Uhr, schrieb NoRulez <norulez at me.com>:

> Hello,
>
> here is the build process of the build server:
>
> 1.) e.g.: last commit at 03:00 pm (svn revision 8) => build is ok
> 2.) The nightly build starts at 10:00 pm (svn revision 7) => build is ok
>     Why is the svn revision before the last commit, it should be 8?
> 3.) In the morning (~ 06:00 am) a continuous build is triggered (SVN  
> revision 8) => build is ok
>     Why is this continuous build triggered?
>
> The folder structure for the project on the build server is the  
> following:
> 
> MyProject
>     |
>     +----build
>     |
>     +----source
>
> In the CTestScript.cmake if have the following:
>
> if(MODEL STREQUAL "Nightly")
>     file(REMOVE_RECURSE "${CTEST_BINARY_DIRECTORY}")
>     set(CTEST_START_WITH_EMPTY_BINARY_DIRECTORY TRUE)
> endif()
>
> According to my understanding the build directory should be removed and  
> newly created.
> But I don't know why the revisions are changed during the nightly build.

That's because the svn update for both Nightly and Continuous are done on
the common source tree.
The solution is to have independent source trees:

MyProject
      |
      +----Continuous
      |        |
      |        +----build
      |        |
      |        +----source
      |
      +----Nightly
      |        |
      |        +----build
      |        |
      |        +----source

Regards,
   Stefan