Re: [Discuss-gnuradio] Problem compiling gnuradio 3.7.0 on CentOS 6.2

[Tom Rondeau]

On Thu, Aug 1, 2013 at 10:12 AM, Robert Lucas <address@hidden> wrote:
> My system:
> CentOS 6.2, x86_64
> Python 2.6.6
> Cmake version 2.6-patch 4
> gnuradio 3.7.0
>
> I created a "build" folder in the gnuradio soure directory and attempted to 
> compile using "cmake ../".  The error I keep getting is this:
>
> --------------------------------------------START 
> LOG-------------------------------------------------------------
> -- Build type not specified: defaulting to release.
> -- NO PERF COUNTERS
> -- Minimum SWIG version required is 1.3.31
> --
> -- The build system will automatically enable all components.
> -- Use -DENABLE_DEFAULT=OFF to disable components by default.
> --
> -- Configuring python-support support...
> --   Dependency PYTHONLIBS_FOUND = TRUE
> --   Dependency SWIG_FOUND = 1
> --   Dependency SWIG_VERSION_CHECK = TRUE
> --   Enabling python-support support.
> --   Override with -DENABLE_PYTHON=ON/OFF
> --
> -- Configuring testing-support support...
> --   Dependency CPPUNIT_FOUND = TRUE
> --   Enabling testing-support support.
> --   Override with -DENABLE_TESTING=ON/OFF
> --
> -- Configuring volk support...
> --   Enabling volk support.
> --   Override with -DENABLE_VOLK=ON/OFF
>   File "<string>", line 1
>
>
>     ^
> SyntaxError: invalid syntax
> CMake Error at volk/cmake/GrPython.cmake:105 (file):
>   file FILE(SYSTEM_PATH ENV result) must be called with only three arguments.
> Call Stack (most recent call first):
>   volk/CMakeLists.txt:53 (include)
>
>
> --
> -- Python checking for python >= 2.5
>   File "<string>", line 1
>
>
>     ^
> SyntaxError: invalid syntax
> -- Python checking for python >= 2.5 - not found
> --
> -------------------------------------------END 
> LOG-------------------------------------------------------------
>
> It seems as if cmake is inserting a "CR" character at the beginning of each 
> string that is passed to python.
>
> I found that I was able to resolve the problem by editing 
> volk/cmake/GrPython.cmake to put all the python code on one line as follows:
>
> ----------------------ORIGINAL CODE----------------------------------
> ########################################################################
> # Sets the python installation directory GR_PYTHON_DIR
> ########################################################################
> execute_process(COMMAND ${PYTHON_EXECUTABLE} -c "
> from distutils import sysconfig
> print sysconfig.get_python_lib(plat_specific=True, prefix='')
> " OUTPUT_VARIABLE GR_PYTHON_DIR OUTPUT_STRIP_TRAILING_WHITESPACE
> )
> file(TO_CMAKE_PATH ${GR_PYTHON_DIR} GR_PYTHON_DIR)
>
> ----------------------------EDITED CODE----------------------------------
> ########################################################################
> # Sets the python installation directory GR_PYTHON_DIR
> ########################################################################
> execute_process(COMMAND ${PYTHON_EXECUTABLE} -c "from distutils import 
> sysconfig; print sysconfig.get_python_lib(plat_specific=True, prefix='');" 
> OUTPUT_VARIABLE GR_PYTHON_DIR OUTPUT_STRIP_TRAILING_WHITESPACE
> )
> file(TO_CMAKE_PATH ${GR_PYTHON_DIR} GR_PYTHON_DIR)
>
> --------------------------END 
> CODE-----------------------------------------------
>
> Note that trying to put "from distutils import sysconfig" on the same line as 
> the open quotemark does not resolve the problem either (it also seems to 
> append a CR to the end of the line and python barks at me).
>
> However, this process is very tedious, and it seems like there should be a 
> better way of fixing it, and it does not work for the sections of python code 
> in the cmake files where there are if/else blocks.  Is there a better way of 
> resolving this problem, or has anyone else had this problem?



Robert,
Give PyBOMBS a shot (gnuradio.org/pybombs). CentOS ships with packages
that are too old for building GNU Radio out of the box, but PyBOMBS
should install them all as necessary. I was able to use it to build
GNU Radio on a CentOS 5.(something) a while ago.

-- 
Tom
Visit us at GRCon13 Oct. 1 - 4
http://www.trondeau.com/grcon13