[CMake] Strange build environments (MSVC and GCC both)

[David Cole]

"ExtSubProj" is the name of a custom CMake target.

You should be able to:
add_dependencies(mylib1 ExtSubProj)
add_dependencies(mylib2 ExtSubProj)

And get ExtSubProj should build first before mylib1 and mylib2. (Assuming
mylib1 and mylib2 are add_library targets.) Also works with add_executable
targets, or other custom targets.


HTH,
David


On Tue, Oct 27, 2009 at 5:56 PM, Dixon, Shane <Shane.Dixon at atmel.com> wrote:

> I've created this as an external project:
>
> ExternalProject_Add( ExtSubProj
>        URL "${CMAKE_CURRENT_SOURCE_DIR}/MySubProj"
>        CMAKE_GENERATOR "NMake Makefiles"
>        CMAKE_ARGS -DEMUL=ON
>        INSTALL_DIR ${CMAKE_CURRENT_BINARY_DIR} )
>
> I presume that I can go back later and also configure the project with
> CMAKE_GENERATOR "MinGW makefiles" or something that uses gcc when building
> in REAL mode.
>
> Now the only part that I'm not quite sure how to handle is how to make
> other targets depend on this one.  This should build first before any other
> target runs, but I'm not quite sure how to do that.
>
>
> --
> Shane Dixon
> Linux Engineer
> Atmel Corporation
>
>
> -----Original Message-----
> From: cmake-bounces at cmake.org [mailto:cmake-bounces at cmake.org] On Behalf
> Of Dixon, Shane
> Sent: Tuesday, October 27, 2009 11:39 AM
> To: cmake at cmake.org
> Subject: [CMake] Strange build environments (MSVC and GCC both)
>
> I'm trying to work with a vendor's strange build environment that uses
> gnumake and several (very annoying) Makefiles.  Part of the problem is that
> when the environment builds an emulator, it uses the MSVC toolchain.  Once
> you actually build the real module, it uses gcc so that the object can be
> deployed to a linux workstation.
>
>  * How would be the best way to handle this in CMake?
>
>  * Should the two options be two different external projects that I include
> in some top-level project?
>
>  * I suppose I could also do something like add execute_process() commands
> that build using their toolchain, but how then do I make those commands
> become targets?
>
>
> --
> Shane Dixon
> Linux Engineer
> Atmel Corporation
>
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