Re: [Discuss-gnuradio] Building gnuradio on cygwin - wxPython issue

[Don Ward]

Jan Schiefer wrote:

> I should know better, but I am nonetheless trying to build gnuradio on
> Windows XP/cygwin. I did follow the instructions on the wiki (including
> picking the exact versions), but I am getting stuck on building wxPython.
> When I try to do the
> python setup.py install WXPORT=msw COMPILER=cygwin BUILD_GLCANVAS=0
> BUILD_GIZMOS=0 UNICODE=0
> step, I get the following error:
>
> function
> Traceback (most recent call last):
>   File "setup.py", line 1034, in <module>
>     **other_kw
>   File "/usr/lib/python2.6/distutils/core.py", line 152, in setup
>     dist.run_commands()
>   File "/usr/lib/python2.6/distutils/dist.py", line 975, in run_commands
>     self.run_command(cmd)
. . .
>   File "/usr/lib/python2.6/distutils/cygwinccompiler.py", line 189, in 
> link
>     libraries.extend(self.dll_libraries)
> TypeError: 'NoneType' object is not iterable
>
> The offending line 189 is a rather nondescript
> libraries.extend(self.dll_libraries)
>
> Has anybody who is more pythonic than me seen this before? My cygwin
> version is current as of last Wednesday, and the python version is 2.6.5
> (no other python installations on the machine).

The problem is a Cygwin-specific error in the Python release.  A patch (for 
/usr/lib/python2.6/distutils/cygwinccompiler.py) is attached.

I haven't done a complete install with the latest Cygwin, but I have found 
several things to watch out for:

(1) As noted in the wiki, GNU Radio does not work with gcc4 (4.3.4); use 
gcc (3.4.4) instead.

(2) The latest cppunit (1.12.1-1) only works with gcc4; use 1.12.0-1 
instead.

(3) Do not try to use the Cygwin libboost* packages; they not only require 
gcc4, but will install gcc4 and make it the default.  Build boost from 
source as described in the wiki.

In general, it appears that Cygwin is moving away from supporting gcc 3.x. 
I will follow up on the issue that is preventing GNU Radio from working with 
gcc4 (on Cygwin) and hope it can be resolved before support for gcc 3.x (on 
Cygwin) is removed.

-- Don W.

cygwinccompiler.patch
Description: Binary data