avoid debcargo on build

Switch over to a more manual build oriented on proxmox-backup and
pve-lxc-syscalld.

nothing against debcargo directly, but currently it's really tailored
to Debians re-package upstream crate needs, and that shows.

Once we can generate control files from it without requiring all
build dependencies, and potentially some other stuff fixed, we could
re-introduce it.

Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>

Makefile

@@ -4,7 +4,6 @@ include defines.mk
 
 PACKAGE=proxmox-offline-mirror
 BUILDDIR ?= $(PACKAGE)-$(DEB_VERSION_UPSTREAM)
-BUILDDIR_TMP ?= $(BUILDDIR).tmp
 
 SUBDIRS := docs
 
@@ -22,6 +21,13 @@ else
 COMPILEDIR := target/debug
 endif
 
+USR_BIN := \
+	proxmox-offline-mirror \
+	proxmox-offline-mirror-helper
+
+COMPILED_BINS := \
+	$(addprefix $(COMPILEDIR)/,$(USR_BIN))
+
 all: cargo-build $(SUBDIRS)
 
 .PHONY: cargo-build
@@ -29,26 +35,36 @@ cargo-build:
 	cargo build $(CARGO_BUILD_ARGS)
 
 .PHONY: $(SUBDIRS)
-$(SUBDIRS):
+$(SUBDIRS): cargo-build
 	$(MAKE) -C $@
 
-.PHONY: build
-build: $(BUILDDIR)
-$(BUILDDIR):
-	rm -rf $(BUILDDIR) $(BUILDDIR_TMP); mkdir $(BUILDDIR_TMP)
-	rm -f debian/control
+$(COMPILED_BINS): cargo-build
+
+install: $(COMPILED_BINS)
+	$(MAKE) -C docs install DESTDIR=../debian/proxmox-offline-mirror-docs
+	install -dm755 $(DESTDIR)$(BINDIR)
+	$(foreach i,$(USR_BIN), \
+	    install -m755 $(COMPILEDIR)/$(i) $(DESTDIR)$(BINDIR)/ ;)
+
+update-dcontrol: $(BUILDDIR)
 	debcargo package \
 	  --config debian/debcargo.toml \
 	  --changelog-ready \
 	  --no-overlay-write-back \
-	  --directory $(BUILDDIR_TMP) \
+	  --directory $(BUILDDIR) \
 	  $(PACKAGE) \
 	  $(shell dpkg-parsechangelog -l debian/changelog -SVersion | sed -e 's/-.*//')
-	cat $(BUILDDIR_TMP)/debian/control debian/control.extra > debian/control
+	cat $(BUILDDIR)/debian/control debian/control.extra > debian/control
+	rm -f debian/control
 	cp -a debian/control $(BUILDDIR_TMP)/debian/control
-	rm -f $(BUILDDIR_TMP)/Cargo.lock
-	find $(BUILDDIR_TMP)/debian -name "*.hint" -delete
-	mv $(BUILDDIR_TMP) $(BUILDDIR)
+	wrap-and-sort -t -k-f debian/control
+
+.PHONY: build
+build: $(BUILDDIR)
+$(BUILDDIR):
+	rm -rf $@ $@.tmp; mkdir $@.tmp
+	cp -a src docs debian Cargo.toml Makefile defines.mk $@.tmp/
+	mv $@.tmp $@
 
 .PHONY: deb
 deb: $(DEB)

debian/proxmox-offline-mirror-helper.install

@@ -0,0 +1 @@
+usr/bin/proxmox-offline-mirror-helper

debian/proxmox-offline-mirror.install

@@ -0,0 +1 @@
+usr/bin/proxmox-offline-mirror

debian/rules

@@ -1,24 +1,32 @@
 #!/usr/bin/make -f
 
 include /usr/share/dpkg/pkg-info.mk
+include /usr/share/rustc/architecture.mk
+
+export BUILD_MODE=release
+
+CARGO=/usr/share/cargo/bin/cargo
+
+export CFLAGS CXXFLAGS CPPFLAGS LDFLAGS
+export DEB_HOST_RUST_TYPE DEB_HOST_GNU_TYPE
+export CARGO_HOME = $(CURDIR)/debian/cargo_home
+
+export DEB_CARGO_CRATE=proxmox-offline-mirror_$(DEB_VERSION_UPSTREAM)
+export DEB_CARGO_PACKAGE=proxmox-offline-mirror
 
-export DEB_VERSION DEB_VERSION_UPSTREAM
-export BUILD_MODE=release-deb
 %:
-	dh $@ --buildsystem cargo --with=bash-completion
+	dh $@ --with=bash-completion
+
+override_dh_auto_configure:
+	@perl -ne 'if (/^version\s*=\s*"(\d+(?:\.\d+)+)"/) { my $$v_cargo = $$1; my $$v_deb = "$(DEB_VERSION_UPSTREAM)"; \
+	    die "ERROR: d/changelog <-> Cargo.toml version mismatch: $$v_cargo != $$v_deb\n" if $$v_cargo ne $$v_deb; exit(0); }' Cargo.toml
+	$(CARGO) prepare-debian $(CURDIR)/debian/cargo_registry --link-from-system
+	dh_auto_configure
 
 override_dh_auto_test:
 	# skip for now to avoid additional debug builds - no tests anyway
 	# dh_auto_test -- test --all
 
-override_dh_auto_install:
-	DESTDIR=debian/proxmox-offline-mirror dh_auto_install
-	DESTDIR=../debian/proxmox-offline-mirror-docs make -C docs install
-	rm debian/proxmox-offline-mirror/usr/bin/docgen
-	mkdir -p debian/proxmox-offline-mirror-helper/usr/bin
-	mv debian/proxmox-offline-mirror/usr/bin/proxmox-offline-mirror-helper \
-	 debian/proxmox-offline-mirror-helper/usr/bin
-
 override_dh_missing:
 	dh_missing --fail-missing