# vmsig packaging — `make deb` builds the .deb over a `cmake --install` stage.
# Private values are NOT baked into the tree: pass them via the variables below (the
# defaults are neutral placeholders; CI overrides them from vars/secrets).
#
#   make deb LIBVMIE_PATH=/path/to/vmie VERSION=1.2.3 \
#            MAINTAINER="Name <addr>" DEPENDS="libc6, libvmie0"

VERSION     ?= 0.0.0
MAINTAINER  ?= vmsig packaging <root@localhost>
# libvmie0 is vmie's own runtime package (SONAME libvmie.so.0): libvmsig.so and
# libvgpu-perception.so dynamically link it, so it is a HARD runtime dependency.
DEPENDS     ?= libc6, libvmie0
ARCH        ?= amd64
LIBVMIE_PATH ?=

BUILD_DIR   ?= .build-pkg
STAGE       ?= $(CURDIR)/dist/stage
DIST        ?= $(CURDIR)/dist

.PHONY: deb clean

# Armed package: the shipped daemon needs vmie for memctx. vmie stays an external dependency
# (package Depends on its runtime). vmie is found from a source tree (LIBVMIE_PATH) or, when
# that is empty, from the installed libvmie-dev (system / CMAKE_PREFIX_PATH) — the CI path.
deb:
	rm -rf $(STAGE)
	cmake -S . -B $(BUILD_DIR) -DCMAKE_BUILD_TYPE=Release -DVMSIG_INSTALL=ON -DVMSIG_WITH_VMIE=ON \
	      $(if $(LIBVMIE_PATH),-DLIBVMIE_PATH=$(LIBVMIE_PATH),)
	cmake --build $(BUILD_DIR) -j
	DESTDIR=$(STAGE) cmake --install $(BUILD_DIR) --prefix /usr
	mkdir -p $(STAGE)/DEBIAN
	sed -e 's/@VERSION@/$(VERSION)/' \
	    -e 's|@MAINTAINER@|$(MAINTAINER)|' \
	    -e 's/@DEPENDS@/$(DEPENDS)/' \
	    packaging/deb/control.in > $(STAGE)/DEBIAN/control
	cp packaging/deb/conffiles $(STAGE)/DEBIAN/conffiles
	install -m 0755 packaging/deb/postinst $(STAGE)/DEBIAN/postinst
	install -m 0755 packaging/deb/prerm    $(STAGE)/DEBIAN/prerm
	# strip inherited setgid from staged dirs (a setgid build tree => dpkg-deb rejects DEBIAN)
	find $(STAGE) -type d -exec chmod g-s {} +
	mkdir -p $(DIST)
	dpkg-deb --root-owner-group --build $(STAGE) $(DIST)/vmsig_$(VERSION)_$(ARCH).deb
	@echo "built: $(DIST)/vmsig_$(VERSION)_$(ARCH).deb"

clean:
	rm -rf $(BUILD_DIR) $(DIST)