Re: [wxhaskell-users] Compile problem: wxhaskell-0.9.4: wxUSE_ODBC definition?

[Daan L. <da...@cs...>]

Hi Howard,

Howard B. Golden wrote:

 > Hi,
 >
 > I am trying to compile wxhaskell-0.9.4 using the Gentoo ebuild. I have already 
reported the problem below to Gentoo, but I believe that the issue may be answered 
here instead, since it may be related to wxhaskell and wxwidgets, not just Gentoo.


Yes, it is a bug. Thanks for your detailed analysis. I will try
to fix it by adding some dummy members.

Thanks
-- Daan Leijen.

 >
 > PROBLEM:
 >
 > Compile errors ("no member named...") in wxc/src/db.cpp:
 >
 > RELEVANT OUTPUT:
 >
 > i686-pc-linux-gnu-g++ -c wxc/src/db.cpp -o out/wxc/db.o -MD -march=athlon-xp -O2 
-pipe -fstack-protector -fPIC -I/usr/lib/wx/include/gtk2-ansi-release-2.6 
-I/usr/include/wx-2.6 -DGTK_NO_CHECK_CASTS -D__WXGTK__ -D_FILE_OFFSET_BITS=64 
-D_LARGE_FILES -D_LARGEFILE_SOURCE=1 -DNO_GCC_PRAGMA   -Iwxc/include
 > wxc/src/db.cpp: In function `int wxDbColInf_GetColumnSize(wxDbColInf*)':
 > wxc/src/db.cpp:1035: error: 'class wxDbColInf' has no member named 'columnSize'
 > wxc/src/db.cpp: In function `int wxDbColInf_GetBufferLength(wxDbColInf*)':
 > wxc/src/db.cpp:1044: error: 'class wxDbColInf' has no member named 'bufferLength'
 > wxc/src/db.cpp: In function `wxDbColInf* wxDb_GetResultColumns(wxDb*, int*)':
 > wxc/src/db.cpp:1158: error: 'class wxDbColInf' has no member named 'columnSize'
 > make: *** [out/wxc/db.o] Error 1
 >
 > ------------------------------------
 > My hypothesis of the problem:
 >
 > 1. The code is looking for the #define of wxUSE_ODBC (at line 3 of wxc/src/db.cpp).
 >
 > 2. While I believe this (wxUSE_ODBC) should be defined, I'm hypothesizing that it 
isn't set anywhere (e.g., in a configuration file or an earlier include).
 >
 > 3. If wxUSE_ODBC isn't defined, then wx/db.h will NOT be included. Instead stub 
definitions of wxDb, wxDbColInf, wxDbInf, and wxDbTableInf will be used.
 >
 > 4. Since these stub definitions don't have and members, any attempt to reference 
members of these classes will fail.
 >
 > 5. It appears to me that this is what is happening in the error messages shown above.
 >
 > 6. I don't know where the definition of wxUSE_ODBC _should_be_ coming from, if my 
hypotheses are correct, so I don't have a solution at present.
 >
 > Here is my specific Haskell and wxwidgets setup:
 >
 > * Using /usr/lib/wx/config/gtk2-ansi-release-2.6
 > checking system:
 >  wx-config found
 >  ghc found
 >  ghc-pkg found
 >  haddock found
 >  install program found
 >
 > configuration:
 >  library:     wxhaskell-0.9.4  (release 0)
 >  compiler:    ghc-6.4
 >  wxwidgets:   gtk-2.6.0
 >  with openGL: yes
 >  library dir: /var/tmp/portage/wxhaskell-0.9.4/image///usr/lib/ghc-6.4
 >
 > I would appreciate any suggestions you can offer. Thanks in advance.
 >
 > Howard B. Golden
 > Northridge, California, USA
 >
 >
 > -------------------------------------------------------
 > This SF.Net email is sponsored by Oracle Space Sweepstakes
 > Want to be the first software developer in space?
 > Enter now for the Oracle Space Sweepstakes!
 > http://ads.osdn.com/?ad_id=7412&alloc_id=16344&op=click
 > _______________________________________________
 > wxhaskell-users mailing list
 > wxh...@li...
 > https://lists.sourceforge.net/lists/listinfo/wxhaskell-users