[Buildroot] [PATCH v4 1/1] gnuradio: gnuradio-python: add missing runtime dependency to python-numpy

[Buildroot] [PATCH v4 1/1] gnuradio: gnuradio-python: add missing runtime dependency to python-numpy

[Gwenhael Goavec-Merou]

From: Gwenhael Goavec-Merou <gwenhael.goavec-merou@trabucayre.com>

Some gnuradio python blocks needs python-numpy present.

Without python-numpy, gnuradio-python based apps fails, on runtime, with traceback like:

Traceback (most recent call last):
  File "./top_block.py", line 18, in <module>
    from gnuradio import analog
  File "/usr/lib/python2.7/site-packages/gnuradio/analog/__init__.py", line 35, in <module>
    from am_demod import *
  File "/usr/lib/python2.7/site-packages/gnuradio/analog/am_demod.py", line 22, in <module>
    from gnuradio import gr
  File "/usr/lib/python2.7/site-packages/gnuradio/gr/__init__.py", line 44, in <module>
    from top_block import *
  File "/usr/lib/python2.7/site-packages/gnuradio/gr/top_block.py", line 30, in <module>
    from hier_block2 import hier_block2
  File "/usr/lib/python2.7/site-packages/gnuradio/gr/hier_block2.py", line 26, in <module>
    import pmt
  File "/usr/lib/python2.7/site-packages/pmt/__init__.py", line 58, in <module>
    from pmt_to_python import pmt_to_python as to_python
  File "/usr/lib/python2.7/site-packages/pmt/pmt_to_python.py", line 22, in <module>
    import numpy
ImportError: No module named numpy

Signed-off-by: Gwenhael Goavec-Merou <gwenhael.goavec-merou@trabucayre.com>
---
Changes v3 -> v4:
 * add #runtime comment to BR2_PACKAGE_PYTHON_NUMPY select;
 * suppress python-numpy in GNURADIO_DEPENDENCIES variable (not needed for
   buildtime)
Changes v2 -> v3:
 * Since commit 826a2bc18bc0be0b08f2926c9fa1819fe909557c no special attentions
   is needed to select python-numpy. So BR2_PACKAGE_PYTHON_NUMPY_ARCH_SUPPORTS
   is no more needed
Changes v1 -> v2:
 * Add dependy to BR2_PACKAGE_PYTHON_NUMPY_ARCH_SUPPORTS;
 * gnuradio-python select numpy;
 * gnuradio-utils select again gnuradio-python;
 * fix commit message
---
 package/gnuradio/Config.in | 1 +
 1 file changed, 1 insertion(+)

diff --git a/package/gnuradio/Config.in b/package/gnuradio/Config.in
index e264a21..8da1a13 100644
--- a/package/gnuradio/Config.in
+++ b/package/gnuradio/Config.in
@@ -47,6 +47,7 @@ config BR2_PACKAGE_GNURADIO_PYTHON
 	bool "python support"
 	select BR2_PACKAGE_BOOST_PYTHON
 	select BR2_PACKAGE_PYTHON
+	select BR2_PACKAGE_PYTHON_NUMPY #runtime
 	help
 	  Enable python component
 
-- 
2.4.9

[Buildroot] [PATCH v4 1/1] gnuradio: gnuradio-python: add missing runtime dependency to python-numpy

[Thomas Petazzoni]

Dear Gwenhael Goavec-Merou,

On Mon,  5 Oct 2015 16:01:26 +0200, Gwenhael Goavec-Merou wrote:

> diff --git a/package/gnuradio/Config.in b/package/gnuradio/Config.in
> index e264a21..8da1a13 100644
> --- a/package/gnuradio/Config.in
> +++ b/package/gnuradio/Config.in
> @@ -47,6 +47,7 @@ config BR2_PACKAGE_GNURADIO_PYTHON
>  	bool "python support"
>  	select BR2_PACKAGE_BOOST_PYTHON
>  	select BR2_PACKAGE_PYTHON
> +	select BR2_PACKAGE_PYTHON_NUMPY #runtime

When you "select" an option, you must replicate the "depends on" of
that option into the selecting option. In this case, python-numpy has
the following depends on:

        # Numpy has some CPU specific code
        depends on BR2_aarch64 || BR2_arm || BR2_armeb || BR2_i386 \
                || BR2_mips || BR2_mipsel || BR2_powerpc || BR2_powerpc64 \
                || BR2_sh || BR2_x86_64

So you should replicate that into gnuradio/Config.in. However, since
this is horrible, here is what we do in such cases:

 * Introduce a hidden BR2_PACKAGE_PYTHON_NUMPY_ARCH_SUPPORTS that
   encodes this dependency.

 * And then use this option in python-numpy/Config.in and
   gnuradio/Config.in.

You can grep for ARCH_SUPPORTS in Buildroot to see other examples.

Thanks!

Thomas
-- 
Thomas Petazzoni, CTO, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com