Mismash is a demo Bazel project demonstrating fat packages, with binaries built for different architectures coming from a single build.
Uses https://github.com/crosstool-ng/crosstool-ng (latest master) to prepare toolchains:
git clone https://github.com/crosstool-ng/crosstool-ng
cd crosstool-ng
./configure --enable-local
make
./ct-ng aarch64-unknown-linux-gnu
./ct-ng build
./ct-ng powerpc64le-unknown-linux-gnu
./ct-ng build
./ct-ng x86_64-unknown-linux-gnu
./ct-ng build
This should put the tools under ~/x-tools. Make sure to change
multi_arch/toolchain_config.bzl:19.
To build a distributable package use:
bazel build //server:package
This will result in bazel-bin/server/package.tar with the following contents:
$ tar -tf bazel-bin/server/package.tar
./
./myplatform1/
./myplatform1/server
./myplatform2/
./myplatform2/server
./myplatform3/
./myplatform3/server
You can use QEMU User space emulator to launch these binaries, e.g.:
tar -xvf bazel-bin/server/package.tar
qemu-aarch64-static mishmash2/server
Interacting with the server is then a case of:
$ nc localhost 7000
echo
echo