The best way to use the .cmake files installed by GNU Radio in an OOT module is
to do the
{{{
find_package(Gnuradio [...])
}}}
as close to first thing as possible. Once that's done, then all of the other
GR .cmake modules (including FindCppUnit.cmake) will become available when
using CMake >= 2.8.X. See:
<
https://github.com/gnuradio/gnuradio/blob/master/cmake/Modules/GnuradioConfig.cmake#L28
>
Please note that on CMake 2.6.X and prior this will like -not- work because
CMAKE_CURRENT_LIST_DIR is not yet supported (at least in my testing on OSX; I
assume it's the same on other OSs).
Thus, for example, if I change the file gr-ieee802-11/CMakeLists.txt to include
the following instead of the line setting the CMAKE_MODULE_PATH, then CMake
2.8+ finds everything as hoped/expected.
{{{
########################################################################
# Find gnuradio build dependencies
########################################################################
set(GR_REQUIRED_COMPONENTS RUNTIME FILTER FFT PMT DIGITAL)
find_package(Gnuradio)
if(NOT GNURADIO_RUNTIME_FOUND)
message(FATAL_ERROR "GnuRadio Runtime required to compile ieee802-11")
endif()
}}}
On CMake 2.6 I need to set the CMAKE_MODULE_PATH to include the directory in
which GnuradioConfig.cmake is found to get this to work. I've tried a bunch of
alternatives to working around this on CMake 2.6, and there's no obvious way to
do it using just CMake internals / commands. The best way I can find to do
this is to create a GnuradioConfig.cmake.in file that internally sets this
variable correctly (as is done for GnuradioConfigVersion.cmake.in for the
version info).
I, for one, believe that not having to include all of the already-installed GR
.cmake files is the way to go if at all possible; it eliminates the need to
keep updating these files in the various OOT modules as well as reduces file
redundancy.
Hope this helps! - MLD
On Sep 2, 2014, at 3:46 AM, Bastian Bloessl <bloe...@ccs-labs.org> wrote:
> Oooops, looks like I delete a bit too much files from cmake/Modules. I just
> restored them. Can you please try again?
>
> But, actually that's a good opportunity to ask what an OOT module has to
> install. Actually, I thought FindCppUnit.cmake is installed with GNU Radio
>
> https://github.com/gnuradio/gnuradio/blob/master/CMakeLists.txt#L391
>
> So maybe it is just a matter of adapting ${CMAKE_MODULE_PATH}?
>
> For now I just did it as gr-fosphor :-)
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