[PATCH installer v2] buildsys: add static version of proxmox-auto-install-assistant

[Christoph Heiss <c.heiss@proxmox.com>]

This adds a separate debian package to the build, containing a
statically-built version of `proxmox-auto-install-assistant`, as
was suggested by Thomas.

Similar how we ship a static variant of proxmox-backup-client.

The binary is placed at /usr/bin/proxmox-auto-install-assistant-static,
with a symlink to it at /usr/bin/proxmox-auto-install-assistant.

Signed-off-by: Christoph Heiss <c.heiss@proxmox.com>
---
Decided to pick this up again, as it recently came up in a discussion.

lintian reports `shared-library-lacks-prerequisites` [0] for the
resulting package, which seems rather irrelevant (or even bogus) in our
case - thus the override.

v1: https://lore.proxmox.com/pve-devel/20240816161942.2044889-1-c.heiss@proxmox.com/

Changes v1 -> v2:
  * rebased on latest master

[0] https://lintian.debian.org/tags/shared-library-lacks-prerequisites

 Makefile                                      | 21 +++++++++++++++++--
 debian/control                                | 10 +++++++++
 ...xmox-auto-install-assistant-static.install |  1 +
 ...roxmox-auto-install-assistant-static.links |  1 +
 ...install-assistant-static.lintian-overrides |  1 +
 5 files changed, 32 insertions(+), 2 deletions(-)
 create mode 100644 debian/proxmox-auto-install-assistant-static.install
 create mode 100644 debian/proxmox-auto-install-assistant-static.links
 create mode 100644 debian/proxmox-auto-install-assistant-static.lintian-overrides

diff --git a/Makefile b/Makefile
index bb5dc86..f7c25ec 100644
--- a/Makefile
+++ b/Makefile
@@ -1,4 +1,5 @@
 include /usr/share/dpkg/default.mk
+include /usr/share/rustc/architecture.mk
 
 PACKAGE = proxmox-installer
 BUILDDIR ?= $(PACKAGE)-$(DEB_VERSION_UPSTREAM)
@@ -6,17 +7,26 @@ BUILDDIR ?= $(PACKAGE)-$(DEB_VERSION_UPSTREAM)
 DEB=$(PACKAGE)_$(DEB_VERSION)_$(DEB_HOST_ARCH).deb
 ASSISTANT_DEB=proxmox-auto-install-assistant_$(DEB_VERSION)_$(DEB_HOST_ARCH).deb
 FIRST_BOOT_DEB=proxmox-first-boot_$(DEB_VERSION)_$(DEB_HOST_ARCH).deb
+ASSISTANT_STATIC_DEB=proxmox-auto-install-assistant-static_$(DEB_VERSION)_$(DEB_HOST_ARCH).deb
 
-ALL_DEBS = $(DEB) $(ASSISTANT_DEB) $(FIRST_BOOT_DEB)
+ALL_DEBS = $(DEB) $(ASSISTANT_DEB) $(FIRST_BOOT_DEB) $(ASSISTANT_STATIC_DEB)
 
 DSC=$(PACKAGE)_$(DEB_VERSION).dsc
 
 CARGO ?= cargo
+
+CARGO_STATIC_TARGET_DIR := target/static
+CARGO_STATIC_RUSTC_FLAGS := -C target-feature=+crt-static
+CARGO_STATIC_BUILD_ARGS += --target $(DEB_HOST_RUST_TYPE) --target-dir $(CARGO_STATIC_TARGET_DIR)
+
 ifeq ($(BUILD_MODE), release)
 CARGO_BUILD_ARGS += --release
 CARGO_COMPILEDIR := target/release
+CARGO_STATIC_BUILD_ARGS += --release
+CARGO_STATIC_COMPILEDIR := $(CARGO_STATIC_TARGET_DIR)/$(DEB_HOST_RUST_TYPE)/release
 else
 CARGO_COMPILEDIR := target/debug
+CARGO_STATIC_COMPILEDIR := $(CARGO_STATIC_TARGET_DIR)/$(DEB_HOST_RUST_TYPE)/debug
 endif
 
 INSTALLER_SOURCES=$(shell git ls-files) locale-info.json
@@ -83,6 +93,7 @@ tidy:
 
 deb: $(DEB)
 $(ASSISTANT_DEB): $(DEB)
+$(ASSISTANT_STATIC_DEB): $(DEB)
 $(FIRST_BOOT_DEB): $(DEB)
 $(DEB): $(BUILDDIR)
 	cd $(BUILDDIR); dpkg-buildpackage -b -us -uc
@@ -122,7 +133,7 @@ VARLIBDIR=$(DESTDIR)/var/lib/proxmox-installer
 HTMLDIR=$(VARLIBDIR)/html/common
 
 .PHONY: install
-install: $(INSTALLER_SOURCES) $(COMPILED_BINS)
+install: $(INSTALLER_SOURCES) $(COMPILED_BINS) auto-install-assistant-static
 	$(MAKE) -C banner install
 	$(MAKE) -C Proxmox install
 	$(MAKE) -C proxmox-first-boot install
@@ -134,6 +145,7 @@ install: $(INSTALLER_SOURCES) $(COMPILED_BINS)
 	install -D -m 755 proxinstall $(DESTDIR)/usr/bin/proxinstall
 	install -D -m 755 proxmox-low-level-installer $(DESTDIR)/$(BINDIR)/proxmox-low-level-installer
 	$(foreach i,$(USR_BIN), install -m755 $(CARGO_COMPILEDIR)/$(i) $(DESTDIR)$(BINDIR)/ ;)
+	install -D -m 755 $(CARGO_STATIC_COMPILEDIR)/proxmox-auto-install-assistant $(DESTDIR)$(BINDIR)/proxmox-auto-install-assistant-static
 	install -D -m 755 checktime $(DESTDIR)/usr/bin/checktime
 	install -D -m 644 xinitrc $(DESTDIR)/.xinitrc
 	install -D -m 755 spice-vdagent.sh $(DESTDIR)/.spice-vdagent.sh
@@ -150,6 +162,11 @@ cargo-build:
 		--package proxmox-post-hook --bin proxmox-post-hook \
 		$(CARGO_BUILD_ARGS)
 
+.PHONY: auto-install-assistant-static
+auto-install-assistant-static:
+	RUSTFLAGS="$(CARGO_STATIC_RUSTC_FLAGS)" \
+	$(CARGO) build --package proxmox-auto-install-assistant $(CARGO_STATIC_BUILD_ARGS)
+
 %-banner.png: %-banner.svg
 	rsvg-convert -o $@ $<
 
diff --git a/debian/control b/debian/control
index 7565c2a..95f695f 100644
--- a/debian/control
+++ b/debian/control
@@ -77,6 +77,16 @@ Description: Assistant to help with automated installations
  installation of a Proxmox project, and preparing a official ISO image to use
  this answer file.
 
+Package: proxmox-auto-install-assistant-static
+Architecture: any
+Recommends: xorriso, ${misc:Depends},
+Conflicts: proxmox-auto-install-assistant
+Provides: proxmox-auto-install-assistant
+Description: Assistant to help with automated installations - static build
+ Provides a helper that can assist with creating an answer file for a automated
+ installation of a Proxmox project, and preparing a official ISO image to use
+ this answer file.
+
 Package: proxmox-first-boot
 Architecture: any
 Depends: ${misc:Depends}, ${perl:Depends},
diff --git a/debian/proxmox-auto-install-assistant-static.install b/debian/proxmox-auto-install-assistant-static.install
new file mode 100644
index 0000000..abd2c64
--- /dev/null
+++ b/debian/proxmox-auto-install-assistant-static.install
@@ -0,0 +1 @@
+usr/bin/proxmox-auto-install-assistant-static
diff --git a/debian/proxmox-auto-install-assistant-static.links b/debian/proxmox-auto-install-assistant-static.links
new file mode 100644
index 0000000..28e003c
--- /dev/null
+++ b/debian/proxmox-auto-install-assistant-static.links
@@ -0,0 +1 @@
+usr/bin/proxmox-auto-install-assistant-static usr/bin/proxmox-auto-install-assistant
diff --git a/debian/proxmox-auto-install-assistant-static.lintian-overrides b/debian/proxmox-auto-install-assistant-static.lintian-overrides
new file mode 100644
index 0000000..85efadd
--- /dev/null
+++ b/debian/proxmox-auto-install-assistant-static.lintian-overrides
@@ -0,0 +1 @@
+proxmox-auto-install-assistant-static: shared-library-lacks-prerequisites [usr/bin/proxmox-auto-install-assistant-static]
-- 
2.54.0