On Thu, 04/19 23:57, Philippe Mathieu-Daudé wrote: > On 04/19/2018 02:58 PM, Peter Maydell wrote: > > On 19 April 2018 at 18:49, Alex Bennée <alex.ben...@linaro.org> wrote: > >> Philippe Mathieu-Daudé <f4...@amsat.org> writes: > >>> On 04/19/2018 10:58 AM, Alex Bennée wrote: > >>>> This doesn't add any additional tests but enables building the > >>>> multiarch tests for MIPS using docker cross compilers. We don't have a > >>>> cross compiler for mips64 big endian though. > >>> > >>> Oh we have one, using CFLAGS+=-EB > >>> > >>> we don't have cross libraries although. > >> > >> Yeah I thought the same with the ARM compilers (-mbig-endian) but it's > >> the libraries that let us down. If, as you say, newlib gets this right I > >> suspect we should use that to build the compilers not supported out of > >> the box by Debian. > > > > I don't think we really want to get into the business of > > building our own cross compilers if we can avoid it...it's harder > > than it looks and we would be essentially reinventing the wheel. > > I totally agree. > > I'v been looking at existing maintained images we can use to > cross-build, so we only have to pull (download) and image and use it, > not wasting cpu time building it. > > However some images might be huge, full of things we don't need. But I > prefer that rather than having to maintain cross toolchains. > > An example I like to use is the coreboot-sdk, designed to build > i386/amd64 binaries, it fulfills our needs. But takes 2GB... > > $ docker pull coreboot/coreboot-sdk:1.47 > 1.47: Pulling from coreboot/coreboot-sdk > 3d6aedfc3e47: Downloading [> ] 538.2kB/1.201GB > d23c9a72f1e5: Waiting > > Another candidate is crossbuild, ~1GB > $ docker pull multiarch/crossbuild
Makes sense to me. It is not insanely big. It might take some time to download depending on the network but it's more likely a one-off thing compared to building one from a handcraft dockerfile we make, which probably will involve even more downloading time and disk usage. Fam
