I've made some slight progress. > After solving initial problems (had to install qemu in the schroot, so > that python2.7-minimal:armhf can be configured)... > there's a problem during actual cross-compiling:
In the schroot (entering via: sudo sbuild-shell stretch-amd64-sbuild), I did apt-get install qemu-user-static qemu-system-arm > I should perhaps quote a bit more of the (failed) build-output: > > dpkg-buildpackage: source package mosquitto > dpkg-buildpackage: source version 1.4.3-1 > dpkg-buildpackage: source distribution unstable > dpkg-buildpackage: source changed by Roger A. Light <[email protected]> > dpkg-architecture: warning: specified GNU system type > arm-linux-gnueabihf does not match gcc system type x86_64-linux-gnu, > try setting a correct CC environment variable > dpkg-source --before-build mosquitto-1.4.3 > dpkg-buildpackage: host architecture armhf Adding this to ~/.sbuildrc brought the build much further: $build_environment = { 'CC' => 'arm-linux-gnueabihf-gcc', 'CXX' => 'arm-linux-gnueabihf-g++' }; This makes the build goes much further. The c and c++ files get compiled in the sbuild schroot! But I now get an error at the end: make[1]: Leaving directory '/«PKGBUILDDIR»' dh_makeshlibs -a dh_shlibdeps -a dpkg-shlibdeps: error: couldn't find library libstdc++.so.6 needed by debian/libmosquittopp1/usr/lib/arm-linux-gnueabihf/libmosquittopp.so.1 (ELF format: 'elf32-littlearm'; RPATH: '') dpkg-shlibdeps: error: cannot continue due to the error above Note: libraries are not searched in other binary packages that do not have any shlibs or symbols file. To help dpkg-shlibdeps find private libraries, you might need to use -l. dh_shlibdeps: dpkg-shlibdeps -Tdebian/libmosquittopp1.substvars debian/libmosquittopp1/usr/lib/arm-linux-gnueabihf/libmosquittopp.so.1 returned exit code 2 make: *** [binary-arch] Error 2 debian/rules:9: recipe for target 'binary-arch' failed dpkg-buildpackage: error: fakeroot debian/rules binary-arch gave error exit status 2 Any suggestions? Thanks n.
