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
