[CMake] "make superclean" target? (i.e. clear *everything*)

[Andreas Stahl]

Am 04.04.2013 um 17:31 schrieb Brian Milco:

> 
> On Thu, Apr 4, 2013 at 6:01 AM, Daniele E. Domenichelli <daniele.domenichelli at gmail.com> wrote:
> One benefit is that it would allow to easily remove all cmake files when
> you wrongly run cmake in the source directory instead of in the build one.
> 
>  
> A while ago I found the attached macro online[1]. It stops the build process early on preventing an in source build.
> Since it has to start the process to work you still get a CMakeCache.txt file and CMakeFiles directory but those are easy enough to remove compared to picking through your whole source tree.
> 
> To use it place the Macro as close to the top of your master CMakeLists.txt file as you can and call it with something like:
> 
> # Appends the path where you are keeping this Macro
> set(CMAKE_MODULE_PATH ${CMAKE_CURRENT_SOURCE_DIR}/cmake/modules ${CMAKE_MODULE_PATH})
> 
> #Forces out of source builds just in case.
> include(MacroOutOfSourceBuild)
> macro_ensure_out_of_source_build("${PROJECT_NAME} requires an out of source build.")
>  
> -Brian
> 
> [1] https://github.com/DisCODe/DisCODe/blob/master/cmake/modules/MacroOutOfSourceBuild.cmake
> <MacroOutOfSourceBuild.cmake>--
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Hi all,

What about just doing a string comparison on the <ProjectName>_SOURCE_DIR and  <ProjectName>_BINARY_DIR? No need to include a file for what is effectively three lines:

if(${MyProj_SOURCE_DIR} STREQUAL ${MyProj_BINARY_DIR})
	message(FATAL_ERROR "Only out-of source builds allowed at the moment.")
endif()

Or are there some traps I'm not seeing with this method?

Andreas


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