[pve-devel] [PATCH proxmox-backup-qemu 1/3] include debian version and git rev in header file
Stefan Reiter
s.reiter at proxmox.com
Thu Nov 5 12:17:57 CET 2020
...so we can get the library version a binary is currently running with.
Details are retrieved in build.rs by calling dpkg-parsechangelog and
git, then appended using 'with_after_include' to appear within the
include guard.
The version string in current-api.h is inconsequential, so ignore it in
diff. This way we only have to re-commit that file whenever the *actual*
API changes, not the version.
Signed-off-by: Stefan Reiter <s.reiter at proxmox.com>
---
Makefile | 4 ++--
build.rs | 26 ++++++++++++++++++++++++++
current-api.h | 2 ++
3 files changed, 30 insertions(+), 2 deletions(-)
diff --git a/Makefile b/Makefile
index 8761298..bc5f1f0 100644
--- a/Makefile
+++ b/Makefile
@@ -20,7 +20,7 @@ endif
all:
ifneq ($(BUILD_MODE), skip)
cargo build $(CARGO_BUILD_ARGS)
- diff -up current-api.h proxmox-backup-qemu.h
+ diff -I 'PROXMOX_BACKUP_QEMU_VERSION' -up current-api.h proxmox-backup-qemu.h
endif
# always re-create this dir
@@ -29,7 +29,7 @@ endif
build:
rm -rf build
cargo build --release
- diff -up current-api.h proxmox-backup-qemu.h
+ diff -I 'PROXMOX_BACKUP_QEMU_VERSION' -up current-api.h proxmox-backup-qemu.h
rsync -a debian Makefile Cargo.toml Cargo.lock build.rs proxmox-backup-qemu.h src target current-api.h build/
.PHONY: install
diff --git a/build.rs b/build.rs
index 46dbb7a..c49b2ab 100644
--- a/build.rs
+++ b/build.rs
@@ -2,16 +2,42 @@
extern crate cbindgen;
use std::env;
+use std::process::Command;
+
+fn capture_stdout(cmd: &str) -> String {
+ let args: Vec<&str> = cmd.split(' ').collect();
+ let (exe, args) = (args[0], &args[1..]);
+
+ let stdout = Command::new(exe)
+ .args(args)
+ .output()
+ .expect(&format!("failed to run program: {}", exe))
+ .stdout;
+
+ String::from_utf8(stdout)
+ .expect(&format!("program {} produced invalid UTF-8 output", exe))
+ .trim()
+ .to_owned()
+}
fn main() {
let crate_dir = env::var("CARGO_MANIFEST_DIR").unwrap();
let header = std::fs::read_to_string("header-preamble.c").unwrap();
+ let debver = capture_stdout("dpkg-parsechangelog -l debian/changelog -SVersion");
+ let gitver = capture_stdout("git rev-parse --short=8 HEAD");
+ let version_define = format!(
+ "\n#define PROXMOX_BACKUP_QEMU_VERSION \"{} ({})\"",
+ debver,
+ gitver,
+ );
+
cbindgen::Builder::new()
.with_language(cbindgen::Language::C)
.with_crate(&crate_dir)
.with_header(header)
.with_include_guard("PROXMOX_BACKUP_QEMU_H")
+ .with_after_include(version_define)
.generate()
.unwrap()
.write_to_file("proxmox-backup-qemu.h");
diff --git a/current-api.h b/current-api.h
index 77e8c4b..97c185f 100644
--- a/current-api.h
+++ b/current-api.h
@@ -32,6 +32,8 @@
#include <stdint.h>
#include <stdlib.h>
+#define PROXMOX_BACKUP_QEMU_VERSION "0.7.1-1 (296da586)"
+
#define PROXMOX_BACKUP_DEFAULT_CHUNK_SIZE ((1024 * 1024) * 4)
/**
--
2.20.1
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