Pb with the ./configure script

Hello everybody,
i am a new member of this mailing-list, because i tried yesterday to
install pgadmin3 on a computer i am not root on, so.... let's go to
compile from sources !
(I am a student in charge of the installation of different GNU/Linux
software in a french engineer school in computer sciences.)

I have installed without any problem wxWindows, and the stc "add-on"
which is required by pgadmin3.
But i have got a problem with the "--with-wx" option of pgadmin3 : there
is a good detection of the binary "wx-config" but the script can't find
the stc add-on.
In the configure script of pgadmin3, i've read that, with the
"--with-wx" option, it searches the directory "include" on the same
hierarchical level that the directory "bin", which is totally unusual.

My structure is like this (for wxWindows) :
.
`-- 20031010-7__1
|-- install
| |-- arch
| | `-- Tettnang
| | |-- bin
| | `-- lib
| | `-- wx
| | `-- include
| | `-- gtk2ud-2.5
| | `-- wx
| `-- noarch
| |-- include
| | `-- wx
| | |-- generic
| | |-- gtk
| | |-- html
| | |-- protocol
| | |-- stc
| | |-- unix
| | |-- xml
| | `-- xrc
| `-- share
| |-- ... //lots of things here about locale
| |-- aclocal
| |-- locale
| `-- wx
| `-- 2.5
| |-- afm
| `-- gs_afm
`-- log

So you can see the marked difference between the architectural dependant
files, and the non-architectural dependant files (a classical usage of
the "--prefix" and "--exec-prefix" options)
After editing the configure script, i can start the compilation phase
but there are some C++ errors of compilation (static cast error for
example), so i suppose it can't find some files .h from the stc add-on.

Is there any solution for me to make pgadmin3 undertand that my
"include" directory of wxWindows is NOT at the same place that the "bin"
directory ?
Thanks in advance for your help.
Cremaschi Xavier.