[PATCH 1/3] Makefile: add explicit target to test the x86_64 backend When developing on an arm64 machine, it's useful to be able to test the x86_64 target.
[PATCH 2/3] tools/test.sh: allow running against installed package If $bin is set in the environment, use it instead of using `qbe` from the source tree. The same for $binref. This supports the following use cases:
- I have a qbe package installed, and I want to test my local changes with the installed packages as a reference:
$ binref=/usr/bin/qbe ./tools/test.sh all
- I want to test the installed qbe against new tests that I have written, to reproduce a bug:
In Debian, we also run tests against the installed package when dependencies change, etc. We will also run on several architectures where the necessary cross compilers might not be available. So make tests that cannot be run because of a missing compiler exit with 77, signaling to Debian's autopkgtest that the test is skipped.
