I am running dpkg-buildpackage with the environment variable DEB_BUILD_OPTIONS set to nocheck. This compiles but skips the testing. With which command can I execute the checking manually after dpkg-buildpackage has completed?
It is all defined in debian/rules You should probably look for an upstream tests or for the content of debian/tests if present.
So basically the DEB_BUILD_OPTIONS is just an environment variable and it's up to the maintainer of d/rules how to handle it.
dpkg-buildpackage doesn't care about it, it is just the makefile - debian/rules which has some code checking for this var.
For example:
override_dh_auto_test:
ifeq (,$(filter nocheck,$(DEB_BUILD_OPTIONS)))
dh_auto_test --no-parallel
endif
The official docs: https://www.debian.org/doc/debian-policy/ch-source.html#s-debianrules-options