[pbs-devel] [PATCH proxmox-backup-restore-image 2/2] build: use system toolchain and rust dependencies

["Fabian Grünbichler" <f.gruenbichler@proxmox.com>]

instead of using crates.io - the build still requires network access and
depends on configured APT sources in the build environment, so there's room for
further improvement.

Signed-off-by: Fabian Grünbichler <f.gruenbichler@proxmox.com>
---
 debian/control         |  8 +++++++-
 debian/rules           | 17 +++++++++++++++++
 src/build_initramfs.sh |  2 +-
 3 files changed, 25 insertions(+), 2 deletions(-)

diff --git a/debian/control b/debian/control
index 55781a4..b2750fd 100644
--- a/debian/control
+++ b/debian/control
@@ -7,8 +7,10 @@ Build-Depends: apt-rdepends,
                automake,
                bc,
                bison,
+               cargo,
                cpio,
                debhelper (>= 12~),
+               dh-cargo,
                dh-python,
                flex,
                gcc (>= 8.3.0-6),
@@ -16,10 +18,14 @@ Build-Depends: apt-rdepends,
                libblkid-dev,
                libdw-dev,
                libelf-dev,
+               librust-anyhow-1+default-dev,
+               librust-nix-0.26+default-dev,
+               libssl-dev,
                libtool,
                lintian,
                perl-modules,
-               python3-minimal,
+               python3,
+               rustc,
                sed,
                sphinx-common,
                tar,
diff --git a/debian/rules b/debian/rules
index 657234c..4fdf855 100755
--- a/debian/rules
+++ b/debian/rules
@@ -3,5 +3,22 @@
 # Uncomment this to turn on verbose mode.
 #export DH_VERBOSE=1
 
+include /usr/share/dpkg/architecture.mk
+include /usr/share/dpkg/buildflags.mk
+include /usr/share/rustc/architecture.mk
+
+export CFLAGS CXXFLAGS CPPFLAGS LDFLAGS
+export DEB_HOST_RUST_TYPE DEB_HOST_GNU_TYPE
+PATH := /usr/share/cargo/bin:$(PATH)
+
+export PATH
+
+export CARGO_HOME=$(CURDIR)/debian/cargo_home
+export DEB_CARGO_CRATE=init-shim-rs
+
 %:
 	dh $@
+
+override_dh_auto_configure:
+	cargo prepare-debian $(CARGO_HOME)/registry --link-from-system
+	dh_auto_configure
diff --git a/src/build_initramfs.sh b/src/build_initramfs.sh
index 4d81b39..b7caf81 100755
--- a/src/build_initramfs.sh
+++ b/src/build_initramfs.sh
@@ -4,7 +4,7 @@ set -e
 
 ROOT="root"
 BUILDDIR="build/initramfs"
-INIT="../../init-shim-rs/target/release/init-shim-rs"
+INIT="../../init-shim-rs/target/x86_64-unknown-linux-gnu/release/init-shim-rs"
 
 echo "Using build dir: $BUILDDIR"
 rm -rf "$BUILDDIR"
-- 
2.30.2