[CMake] PROJECT( LANGUAGES ) and m4

[Brad Bell]

Using a custom_command (not custom_target) and a looping over the output 
file names, I was able to get cmake to properly track the m4 output 
files and create them when necessary; see
     https://cmake.org/pipermail/cmake/2009-June/029909.html
This seems to me like a good solution.

On 01/06/2017 05:37 AM, Brad Bell wrote:
> If one looks at the documentation
>     https://cmake.org/cmake/help/v3.0/command/project.html
> one sees
>     project(<PROJECT-NAME> [LANGUAGES] [<language-name>...])
> and the following text: 'By default C and CXX are enabled if no 
> language options are given.'
>
> It there a list of available languages ?
>
> I have a project that has m4 input files. A single m4 input file can 
> be used to generate output in Perl, Octave, Python, or C++ language. 
> Can CMake handle this type of dependency, or would I have to use 
> custom targets in this case ?
>
>