As usual while waiting for the next release - don't forget to check the nightly builds in the forum.
/bin/sh ../../libtool --tag=CXX --mode=link g++ -O2 -ffast-math -DCB_PRECOMP -Winvalid-pch -fPIC -DPIC -o codeblocks app.o appglobals.o compilersettingsdlg.o crashhandler.o dlgabout.o dlgaboutplugin.o environmentsettingsdlg.o main.o prefix.o printdlg.o scriptconsole.o splashscreen.o startherepage.o -LwxAUI -lwxaui -L../sdk -lcodeblocks -pthread -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 -lpthread -ldlg++ -O2 -ffast-math -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 scriptconsole.o splashscreen.o startherepage.o -pthread -L/home/tsalm/SOURCE/CodeBlocks/trunk/src/src/wxAUI /home/tsalm/SOURCE/CodeBlocks/trunk/src/src/wxAUI/.libs/libwxaui.a -L/home/tsalm/SOURCE/CodeBlocks/trunk/src/sdk /home/tsalm/SOURCE/CodeBlocks/trunk/src/sdk/.libs/libcodeblocks.so -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 -lpthread -ldl/usr/lib/gcc/i486-linux-gnu/4.0.3/../../../../lib/libwx_gtk2u_core-2.6.so: undefined reference to `png_get_IHDR@PNG12_0'/usr/lib/gcc/i486-linux-gnu/4.0.3/../../../../lib/libwx_gtk2u_core-2.6.so: undefined reference to `png_destroy_write_struct@PNG12_0'/usr/lib/gcc/i486-linux-gnu/4.0.3/../../../../lib/libwx_gtk2u_core-2.6.so: undefined reference to `png_write_end@PNG12_0'/usr/bin/../lib/libcairo.so.2: undefined reference to `png_set_tRNS_to_alpha@PNG12_0'/usr/lib/gcc/i486-linux-gnu/4.0.3/../../../../lib/libwx_gtk2u_core-2.6.so: undefined reference to `png_set_write_fn@PNG12_0'/usr/lib/gcc/i486-linux-gnu/4.0.3/../../../../lib/libwx_gtk2u_core-2.6.so: undefined reference to `png_destroy_read_struct@PNG12_0'/usr/lib/gcc/i486-linux-gnu/4.0.3/../../../../lib/libwx_gtk2u_core-2.6.so: undefined reference to `png_create_read_struct@PNG12_0'/usr/bin/../lib/libcairo.so.2: undefined reference to `png_set_palette_to_rgb@PNG12_0'/usr/lib/gcc/i486-linux-gnu/4.0.3/../../../../lib/libwx_gtk2u_core-2.6.so: undefined reference to `png_set_shift@PNG12_0'/usr/lib/gcc/i486-linux-gnu/4.0.3/../../../../lib/libwx_gtk2u_core-2.6.so: undefined reference to `png_set_read_fn@PNG12_0'/usr/bin/../lib/libcairo.so.2: undefined reference to `png_set_bKGD@PNG12_0'/usr/lib/gcc/i486-linux-gnu/4.0.3/../../../../lib/libwx_gtk2u_core-2.6.so: undefined reference to `png_set_filler@PNG12_0'/usr/lib/gcc/i486-linux-gnu/4.0.3/../../../../lib/libwx_gtk2u_core-2.6.so: undefined reference to `png_read_image@PNG12_0'/usr/bin/../lib/libcairo.so.2: undefined reference to `png_set_interlace_handling@PNG12_0'/usr/lib/gcc/i486-linux-gnu/4.0.3/../../../../lib/libwx_gtk2u_core-2.6.so: undefined reference to `png_get_io_ptr@PNG12_0'/usr/bin/../lib/libcairo.so.2: undefined reference to `png_error@PNG12_0'/usr/lib/gcc/i486-linux-gnu/4.0.3/../../../../lib/libwx_gtk2u_core-2.6.so: undefined reference to `png_read_end@PNG12_0'/usr/lib/gcc/i486-linux-gnu/4.0.3/../../../../lib/libwx_gtk2u_core-2.6.so: undefined reference to `png_read_info@PNG12_0'/usr/bin/../lib/libcairo.so.2: undefined reference to `png_read_update_info@PNG12_0'/usr/lib/gcc/i486-linux-gnu/4.0.3/../../../../lib/libwx_gtk2u_core-2.6.so: undefined reference to `png_create_write_struct@PNG12_0'/usr/lib/gcc/i486-linux-gnu/4.0.3/../../../../lib/libwx_gtk2u_core-2.6.so: undefined reference to `png_set_IHDR@PNG12_0'/usr/lib/gcc/i486-linux-gnu/4.0.3/../../../../lib/libwx_gtk2u_core-2.6.so: undefined reference to `png_get_valid@PNG12_0'/usr/lib/gcc/i486-linux-gnu/4.0.3/../../../../lib/libwx_gtk2u_core-2.6.so: undefined reference to `png_set_packing@PNG12_0'/usr/lib/gcc/i486-linux-gnu/4.0.3/../../../../lib/libwx_gtk2u_core-2.6.so: undefined reference to `png_create_info_struct@PNG12_0'/usr/bin/../lib/libcairo.so.2: undefined reference to `png_convert_from_time_t@PNG12_0'/usr/lib/gcc/i486-linux-gnu/4.0.3/../../../../lib/libwx_gtk2u_core-2.6.so: undefined reference to `png_set_sBIT@PNG12_0'/usr/bin/../lib/libcairo.so.2: undefined reference to `png_set_gray_to_rgb@PNG12_0'/usr/lib/gcc/i486-linux-gnu/4.0.3/../../../../lib/libwx_gtk2u_core-2.6.so: undefined reference to `png_set_expand@PNG12_0'/usr/lib/gcc/i486-linux-gnu/4.0.3/../../../../lib/libwx_gtk2u_core-2.6.so: undefined reference to `png_write_info@PNG12_0'/usr/lib/gcc/i486-linux-gnu/4.0.3/../../../../lib/libwx_gtk2u_core-2.6.so: undefined reference to `png_write_rows@PNG12_0'/usr/bin/../lib/libcairo.so.2: undefined reference to `png_write_image@PNG12_0'/usr/bin/../lib/libcairo.so.2: undefined reference to `png_set_read_user_transform_fn@PNG12_0'/usr/bin/../lib/libcairo.so.2: undefined reference to `png_set_gray_1_2_4_to_8@PNG12_0'/usr/bin/../lib/libcairo.so.2: undefined reference to `png_set_tIME@PNG12_0'/usr/bin/../lib/libcairo.so.2: undefined reference to `png_set_write_user_transform_fn@PNG12_0'/usr/lib/gcc/i486-linux-gnu/4.0.3/../../../../lib/libwx_gtk2u_core-2.6.so: undefined reference to `png_set_strip_16@PNG12_0'collect2: ld returned 1 exit status
ok, for information, I've just find where is the problem,I used an install of mono in my user's dir, and it use his owns libraries which hide the rights ones.