Jon Loeliger wrote: > Guys, > > Am I missing an obvious solution to cross compiling libnl, iw, > the crda and related friends? > > I have a cross-compiled kernel and headers and such, and I'd > like to add the various wireless tools into the mix, but I > think the existing Makefiles are basically unaware of cross > compiling. > > I think there are a couple points of confusion. While we need > to compile on the host machine, we need to point to the target > include files which may not be installed in standard locations. > The resulting libraries, though, need to be installed in standard > locations on the target. This combination doesn't seem to be > recordable in the pkg-config files (libnl-2.0.pc, for example). > > Then things like crda and iw need to use the headers from the > cross-build installation and the cross-kernel, not the host's. > > Also, crda seems to have hard paths for the regulatory.bin. > I want to point to my source package for the build, but then > install it into a standard location on the target. Feh. > > I feel like I'm missing something here...? In OpenWrt, we have generic workarounds for stuff like libtool and pkg-config. You may need to override PKG_CONFIG_PATH and PKG_CONFIG_LIBDIR to point to your staging directory (if you use such a thing). The configure script can be used with generic options like for other packages. Another thing that might interest you is that I created a tiny version of libnl (based on a git snapshot), which only contains genl, not rtnetlink or any of the netfilter stuff, and compiles down to less than 30k in binary size. You can find it here: https://dev.openwrt.org/browser/trunk/package/libnl-tiny Our crda build system file is here: https://dev.openwrt.org/browser/trunk/package/crda/Makefile (it's an OpenWrt build system makefile, but you might get the point by reading it). Hope this helps, - Felix -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
