Developing 64 bit apps under 32 bit. What compile options for external lib ?

[Juanma Font]

Hellooo ¡¡

 I am poor, not enought money to change my old pc with old architecture of 32bits. 

 I'm developing a graphics project, trying to build the .deb packet for 32bits version,  but also, I would produce .deb packet for 64bits version.

  I read this wiki page -> http://wiki.codeblocks.org/index.php?title=Developing_32_bit_apps_under_64_bit_Linux_%28Ubuntu%29
  and applied all that there is said, but with inverted number of bits,  trying to develop 64bits from 32bits

  Now,  I have :
 
    /usr/include....  (this is my real architecture , 32 bits)

    and

   /usr/i64/include   (this is for the"extra" architecture, 64 bits)

   The problem is that my project uses boost libraries.. ( www.boost.org )

   I downloaded 64 bits  version of boost and "installed/descompress" into /usr/i64/include/boost

   I create a new target on C::B  into my project  called "Release64" (like the wiki page says)

    and this are the build options->Compiler Settings->other options  
---------------------------
-m64
`wx-config --prefix=/usr/i64 --cflags`
`gsl-config --prefix=/usr/i64 --cflags`
-Winvalid-pch
-include wx_pch.h
-I/usr/i64/include/boost
----------------------------

  Then, when begin try to compile, all goes ok, until  compile one file which need some boost code..

That is what "Build log" show   (note that  the system is searching into  /usr/i64/include/boost/gil  when try to compile "blend.cpp" )

-------------- Build: Release64 in zeronoise ---------------

Precompiling header: wx_pch.h
Compiling: ZNApp.cpp
Compiling: ZNMain.cpp
Compiling: ZnGUIFrame.cpp
Compiling: bigmodule.cpp
Compiling: blend.cpp
/home/juanma/proyectos/codeblocks/zeronoise/blend.cpp: In member function 'void Blend::LoadBlendMap()':
/home/juanma/proyectos/codeblocks/zeronoise/blend.cpp:130: error: no match for 'operator=' in 'dimensions = boost::gil::png_read_dimensions(const char*)()'
/usr/i64/include/boost/gil/utilities.hpp:78: note: candidates are: boost::gil::point2<T>& boost::gil::point2<T>::operator=(const boost::gil::point2<T>&) [with T = int]

....  blah.. blah....

------------------------------------------------------------------------
 
  Of course, thereis not problem for target "Release32"

  what is happenig ?

 Thanks...

[Juanma Font]

Hello,  the question has been solved into another forum, the boost user mail list.

   Look, there is 'a bug' when try to compile under 64bits...

    The solution can be see here -> http://lists.boost.org/boost-users/2010/03/57506.php

   So, It was not an especial option to compile 64bits under 32bits system.

   Thank you....