#!/usr/bin/make -f

# resolve DEB_VERSION
include /usr/share/dpkg/pkg-info.mk

# resolve crate version
# * get topmost version except prerelease suffix
#   from Cargo.toml file in dir passed as argument
# * source package version if matching upstream part modulo prerelease
# * otherwise append source package version
crate_version = \
 $(shell perl -n \
 -E '/version\W+\K\d+\.\d+\.\d+/ ' \
 -E 'and say "$(DEB_VERSION_UPSTREAM)" =~ /^\Q$$&\E(?:~[a-z]+\d*)?$$/ ? "$(DEB_VERSION)" : "$$&+$(DEB_VERSION_UPSTREAM_REVISION)" and exit' \
 $1/Cargo.toml)

%:
	dh $@ --sourcedirectory cranelift/umbrella

# unlock dependencies during build
execute_before_dh_auto_configure:
	[ -f Cargo.lock.orig ] || mv Cargo.lock Cargo.lock.orig

override_dh_gencontrol:
	dh_gencontrol -plibrust-cranelift-dev -- -v'$(call crate_version,cranelift/umbrella)'
	dh_gencontrol --remaining-packages
# declare version for virtually provided embedded crates
packages = librust-cranelift-dev
vpkgstems = bforest codegen codegen-meta codegen-shared control entity frontend isle
packages_virtual = $(patsubst %,librust-cranelift-%-dev,$(vpkgstems))
override_dh_gencontrol:
	$(eval librust-cranelift-dev_version = $(call crate_version,cranelift/umbrella))\
	$(foreach s,$(vpkgstems),\
	 $(eval librust-cranelift-$s-dev_version = $(call crate_version,cranelift/$(subst isle,isle/isle,$(subst -,/,$s)))))\
	set -e; $(foreach p,$(packages),\
	 dh_gencontrol -p$p -- \
	 -v'$($p_version)' \
	 $(foreach q,$(filter-out $p,$(packages) $(packages_virtual)),\
	 -V'rust:Version:$q=$($q_version)');)
	dh_gencontrol --remaining-packages

# avoid cleaning unless source is patched
override_dh_auto_clean:
	grep -q crates/wasi-common/WASI/ Cargo.toml || dh_auto_clean --buildsystem rust

# re-lock dependencies
execute_after_dh_auto_clean:
	[ ! -f Cargo.lock.orig ] || mv -f Cargo.lock.lock Cargo.lock