Michael,

Thank you for the response.  Here is what I ended up doing:


If I have gr-myoot that I want to reference from gr-anotheroot


In gr-anotheroot/cmake/modules, create FindMyoot.cmake, which should look 
something like:


########################################################

find_package(PkgConfig)
pkg_check_modules(PC_GNURADIO_RUNTIME gnuradio-runtime)

find_path(MYOOT_INCLUDE_DIR myoot/one_of_the_header_files.h
          HINTS ${PC_GNURADIO_RUNTIME_INCLUDEDIR} 
${PC_GNURADIO_RUNTIME_INCLUDE_DIRS}
          PATH_SUFFIXES myoot )

find_library(MYOOT_LIBRARY NAMES gnuradio-myoot
             HINTS ${PC_GNURADIO_RUNTIME_LIBDIR} 
${PC_GNURADIO_RUNTIME_LIBRARY_DIRS} )

include(FindPackageHandleStandardArgs)
# handle the QUIETLY and REQUIRED arguments and set MYOOT_FOUND to TRUE
# if all listed variables are TRUE
find_package_handle_standard_args(Myoot  DEFAULT_MSG
                                  MYOOT_LIBRARY MYOOT_INCLUDE_DIR)

mark_as_advanced(MYOOT_INCLUDE_DIR MYOOT_LIBRARY )

set(MYOOT_LIBRARIES ${MYOOT_LIBRARY} )
set(MYOOT_INCLUDE_DIRS ${MYOOT_INCLUDE_DIR} )
########################################################

I'm sure there are better ways to do this, but this did the trick quick and 
dirty.  It looks like some other oots have .pc files installed which help with 
the process, but that doesn't look to be standard.




Josh

________________________________
From: Michael Dickens <michael.dick...@ettus.com>
Sent: Tuesday, November 5, 2019 2:14 PM
To: Morman, Joshua
Cc: discuss-gnuradio@gnu.org
Subject: [EXTERNAL] Re: Using function from OOT in another OOT

Hi Josh - I don't think there's a standard way to do this. -Most- OOTs install 
cmake scripts that can be used to "find" them, if you can determine the correct 
"find" name (might be "gr-OOT" or just "OOT", where 'OOT' is the name of the 
OOT module). Once found, you can then use either the target or returned 
variables (OOT_INCLUDE_DIRS, OOT_LIBRARIES most likely) to find the API and 
link against the ABI. Nothing special, but generic enough that it should work 
on different OSs & GR installs. Hope this is useful! - MLD

On Tue, Nov 5, 2019 at 1:42 PM Morman, Joshua 
<jmor...@perspectalabs.com<mailto:jmor...@perspectalabs.com>> wrote:

Is there a prescribed method for including functions from one OOT in another 
OOT (c++ code)?


I could probably figure out how to do it in cmake, but is there some magical 
cmake find functions that already exist for OOTs to set the INCLUDE and LIBRARY 
variables relative to the GR prefix installation?


Thanks,

Josh


--
Michael Dickens
Ettus Research Technical Support
Email: supp...@ettus.com<mailto:supp...@ettus.com>
Web: https://ettus.com/ 
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