Hm, if might be easier. But make failed :( :
g++ -O2 -ffast-math -g -O2 -I/usr/local/lib/wx/include/gtk2-unicode-release-2.6 -I/usr/local/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 -DCB_PRECOMP -Winvalid-pch -fPIC -DPIC -o .libs/codeblocks app.o appglobals.o compilersettingsdlg.o crashhandler.o dlgabout.o dlgaboutplugin.o environmentsettingsdlg.o main.o prefix.o printdlg.o splashscreen.o startherepage.o -pthread -pthread -L/home/neonomicus/inst/codeblocks/trunk/src/src/wxAUI /home/neonomicus/inst/codeblocks/trunk/src/src/wxAUI/.libs/libwxaui.a -L/usr/local/lib -L/home/neonomicus/inst/codeblocks/trunk/src/sdk /home/neonomicus/inst/codeblocks/trunk/src/sdk/.libs/libcodeblocks.so -lpthread -ldl -lwx_gtk2u_xrc-2.6 -lwx_gtk2u_qa-2.6 -lwx_gtk2u_html-2.6 -lwx_gtk2u_adv-2.6 -lwx_gtk2u_core-2.6 -lwx_baseu_xml-2.6 -lwx_baseu_net-2.6 -lwx_baseu-2.6 -Wl,--rpath -Wl,/usr/local/lib
/home/neonomicus/inst/codeblocks/trunk/src/sdk/.libs/libcodeblocks.so: undefined reference to `wxScintilla::FindText(int, int, wxString const&, int, int*)'
collect2: ld returned 1 exit status
make[3]: *** [codeblocks] Fehler 1
make[3]: Leaving directory `/home/neonomicus/inst/codeblocks/trunk/src/src'
make[2]: *** [all-recursive] Fehler 1
make[2]: Leaving directory `/home/neonomicus/inst/codeblocks/trunk/src/src'
make[1]: *** [all-recursive] Fehler 1
make[1]: Leaving directory `/home/neonomicus/inst/codeblocks/trunk/src'
make: *** [all-recursive] Fehler 1
neonomicus@matrix:~/inst/codeblocks/trunk$
Hmm... it normally works fine. Several of us use it on Ubuntu regularly, so it should really work with Debian too. But I see you did not run bootstrap (at least your first post does not show it).
Can you verify exactly what build commands you typed?
It should more or less be something like this:
mkdir cb && cd cb
svn checkout svn://svn.berlios.de/codeblocks/trunk
cd src
./bootstrap
./configure --enable-contrib
make
sudo make install
(actually you can copy and paste this)