scripts/package/debian/rules

#!/usr/bin/make -f
# SPDX-License-Identifier: GPL-2.0-only

# in case debian/rules is executed directly
export DEB_RULES_REQUIRES_ROOT := no

include debian/rules.vars

ifneq (,$(filter-out parallel=1,$(filter parallel=%,$(DEB_BUILD_OPTIONS))))
    NUMJOBS = $(patsubst parallel=%,%,$(filter parallel=%,$(DEB_BUILD_OPTIONS)))
    MAKEFLAGS += -j$(NUMJOBS)
endif

revision = $(lastword $(subst -, ,$(shell dpkg-parsechangelog -S Version)))
CROSS_COMPILE ?= $(filter-out $(DEB_BUILD_GNU_TYPE)-, $(DEB_HOST_GNU_TYPE)-)
make-opts = ARCH=$(ARCH) KERNELRELEASE=$(KERNELRELEASE) KBUILD_BUILD_VERSION=$(revision) $(addprefix CROSS_COMPILE=,$(CROSS_COMPILE))

.PHONY: binary binary-indep binary-arch
binary: binary-arch binary-indep
binary-indep: build-indep
binary-arch: build-arch
	$(MAKE) $(make-opts) \
	run-command KBUILD_RUN_COMMAND='+$$(srctree)/scripts/package/builddeb'

.PHONY: build build-indep build-arch
build: build-arch build-indep
build-indep:
build-arch:
	$(MAKE) $(make-opts) olddefconfig
	$(MAKE) $(make-opts) $(if $(filter um,$(ARCH)),,headers) all

.PHONY: clean
clean:
	rm -rf debian/files debian/linux-* debian/deb-env.vars*
	$(MAKE) ARCH=$(ARCH) clean

# If DEB_HOST_ARCH is empty, it is likely that debian/rules was executed
# directly. Run 'dpkg-architecture --print-set --print-format=make' to
# generate a makefile construct that exports all DEB_* variables.
ifndef DEB_HOST_ARCH
include debian/deb-env.vars

debian/deb-env.vars:
	dpkg-architecture -a$$(cat debian/arch) --print-set --print-format=make > $@.tmp
	mv $@.tmp $@
endif