As people is quite busy these days, I eventually find the answer myself: The best ecos help page for configtool and host tools in general is http://www.ecoscentric.com/devzone/configtool.shtml, the README.txt in ecos/host/tools/configtool/standalone/wxwin gives a make recipe that is less flexible then the one indicated in the web page.
1.- The link to wxGTK-2.8.8 sources in the above, or any other wxGTK-2.8.x sources are ok, but require a few tricks. After configuring, building, and installing, as indicated in the eCosCentric web page for configtool, while in the wxGTK build folder (not the sources one) do: cd contrib/src/gizmos make sudo make install This should get the gizmos library and headers installed, which do not seem to install by default. 2.- Edit the makefile.gnu in ecos/host/tools/configtool/standalone, and add to the line EXTRALDFLAGS, at the end, after leaving a space, -lX11 3.- Build configtool as indicated in http://www.ecoscentric.com/devzone/configtool.shtml sudo make -f <path-to>/ecos/host/tools/configtool/standalone/wxwin/makefile.gnu \ install WXDIR=<wxgtk-install-prefix> ECOSSRCDIR=<path-to>/ecos/host \ INSTALLDIR=<configtool-install-prefix> The makefile.gnu has the full possible options, but if your tcl is properly installed, only the ones shown above will be necessary. N.B. wxGTK-2.9 has either integrated gizmos into normal wxGTK source folders, or moved part of it to "wxCode" (perhaps an additional package to configure --with-wxcode, but not sure). Hopefully I'll be able to find this the next time... Although it would be good to update the ecos.sourceware.org pages with this info, perhaps the eCosCentric ones too. By the way, if John Dallaway, or any other maintainer for configtool could confirm its maintenance status, and if what I've put above is the best way to solve the configtool build problems, that would be great. Cheers -- Before posting, please read the FAQ: http://ecos.sourceware.org/fom/ecos and search the list archive: http://ecos.sourceware.org/ml/ecos-discuss