[CMake] Testing for a target broke for me

[Williams, Norman K]

This is a case for ExternalProjects.
http://www.kitware.com/media/html/BuildingExternalProjectsWithCMake2.8.html

Also search for 'cmake superbuild' for discussion of how people are using
external projects.

An example build setup for prerequisites/projects here:
https://github.com/BRAINSia/NamicExternalProjects



--
Kent Williams norman-k-williams at uiowa.edu






On 12/12/13 10:31 AM, "Richard Shaw" <hobbes1069 at gmail.com> wrote:

>I've had this working and I don't *THINK* I changed anything that would
>cause it to fail now but I'm not completely sure.
>
>
>I have a project I converted over to cmake from automake which requires
>wxWidgets 3.0 (or the 2.9 devel branch). Although it just released I
>still want to maintain the ability to build it within the project itself
>for distro's that are slow to adopt it
> (on linux) or windows/mac as well.
>
>
>Because wxWidgets uses a custom script to get compiler flags and includes
>I have to "bootstrap" the build such that the first time you run
>cmake/make it builds wxWidgets and the second time it builds the project.
>To that end I had the follow strategy working:
>
>
>#
># Pull in external wxWidgets target if performing static build.
>#
>if(BOOTSTRAP_WXWIDGETS)
>    include(cmake/BuildWxWidgets.cmake)
>endif(BOOTSTRAP_WXWIDGETS)
>
>
>#
># Perform bootstrap build of wxWidgets
>#
>if(BOOTSTRAP_WXWIDGETS AND NOT TARGET wxWidgets)
>    message(STATUS "Will perform bootstrap build of wxWidgets.
>   After make step completes, re-run cmake and make again to perform
>FreeDV build.")
>#
># Continue normal build if not bootstrapping wxWidgets or already built
>it.
>#
>else(BOOTSTRAP_WXWIDGETS AND NOT TARGET wxWidgets)
>
>
>
><continue normal build>
>
>
>endif(BOOTSTRAP_WXWIDGETS AND NOT TARGET wxWidgets)
>
>---
>
>
>Even though I can verify that BOOTSTRAP_WXWIDGETS is true, it's failing
>the conditional and I can only assume it has to do with the target
>checking.
>
>
>Any ideas?
>
>
>Thanks,
>Richard
>



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