Re: [Discuss-gnuradio] Building wxPython in Cygwin

[Don Ward]

John Stralka wrote:

> I'm trying to build wxPython 2.8.1.1 under Cygwin following the 
> instructions
> on http://gnuradio.org/trac/wiki/wxPythonCygwin .  I have successfully 
> done
> this previously, but was having difficulty making GNU Radio (which I have
> since identified what was wrong).  I went through an uninstalled my
> wxPython and tried to rebuild it.  Unfortunately, now I getting stuck on
> "make".  I get the following error.  Are there any suggestions as to what 
> may
> be wrong?
>
> Configured wxWidgets 2.8.1 for `i686-pc-cygwin'
>   Which GUI toolkit should wxWidgets use?                 msw
>   Should wxWidgets be compiled into single library?       no
>   Should wxWidgets be compiled in debug mode?             no
>   Should wxWidgets be linked as a shared library?         yes
>   Should wxWidgets be compiled in Unicode mode?           no
>   What level of wxWidgets compatibility should be enabled?
>                                        wxWidgets 2.4      no
>                                        wxWidgets 2.6      yes
>   Which libraries should wxWidgets use?
>                                        jpeg               sys

You are using your system jpeg library, but the instructions on the wiki 
were tested using the wxWidgets builtin jpeg library.

>                                        png                sys
>                                        regex              sys
>                                        tiff               builtin
>                                        zlib               sys
>                                        odbc               no
>                                        expat              sys
>                                        libmspack          no
>                                        sdl                no
>
> address@hidden /usr/src/wxPython-src-2.8.1.1/build-local
> $ make
> /usr/src/wxPython-src-2.8.1.1/build-local/bk-deps gcc -c -o 
> wxtiff_tif_jpeg.o    -D_FILE_OFFSET_BITS=64 -D_LARGE_FILES -D__WXDEBUG__ -I/usr/src/wxPython-src-2.8.1.1/build-local/lib/wx/include/msw-ansi-debug-2.8 
>  -I../include -Wall -Wundef -O2 -fno-strict-aliasing 
> ../src/tiff/tif_jpeg.c
> ../src/tiff/tif_jpeg.c: In function `alloc_downsampled_buffers':
> ../src/tiff/tif_jpeg.c:579: error: structure has no member named 
> `width_in_blocks'
> ../src/tiff/tif_jpeg.c: In function `JPEGEncodeRaw':
> ../src/tiff/tif_jpeg.c:1250: error: structure has no member named 
> `width_in_blocks'
> ../src/tiff/tif_jpeg.c: In function `JPEGPostEncode':
> ../src/tiff/tif_jpeg.c:1311: error: structure has no member named 
> `width_in_blocks'
> make: *** [wxtiff_tif_jpeg.o] Error 1

The errors appear to be associated with the jpeg functions.  Try adding 
"--with-libjpeg=builtin" to your ../configure to use the libjpeg that comes 
with wxPython.  Or, if you don't need it, you can try uninstalling the 
Cygwin libjpeg-devel package.  Or, if you really want to get into it, you 
can compare your /usr/include/jpeglib.h with 
wxPython-src-2.8.1.1/src/jpeg/jpeglib.h and try to figure out if you need a 
newer version (or an older version; or a different version ...).

Let me know if this works; if it does I will add a note in the wiki 
instructions.

-- Don Ward