objdiff/objdiff-cli/build.rs
Luke Street cad9b70632 Support protobuf format for reports
This migrates to using protobuf to
define the "report" and "changes"
formats in objdiff-cli.

The JSON output now uses the Proto3
"JSON Mapping", which is slightly
incompatible with the existing JSON
format. Mainly, 64-bit numbers are
represented as strings, and addresses
are decimal strings instead of hex.

However, the older JSON format is
still accepted by "report changes"
to ease migration.
2024-08-16 00:52:24 -06:00

36 lines
1.3 KiB
Rust

use std::path::PathBuf;
fn main() {
let output = std::process::Command::new("git")
.args(["rev-parse", "HEAD"])
.output()
.expect("Failed to execute git");
let rev = String::from_utf8(output.stdout).expect("Failed to parse git output");
println!("cargo:rustc-env=GIT_COMMIT_SHA={rev}");
println!("cargo:rustc-rerun-if-changed=.git/HEAD");
let root = PathBuf::from(env!("CARGO_MANIFEST_DIR")).join("protos");
let proto_files = vec![root.join("report.proto")];
// Tell cargo to recompile if any of these proto files are changed
for proto_file in &proto_files {
println!("cargo:rerun-if-changed={}", proto_file.display());
}
let descriptor_path =
PathBuf::from(std::env::var("OUT_DIR").unwrap()).join("proto_descriptor.bin");
prost_build::Config::new()
.file_descriptor_set_path(&descriptor_path)
.compile_protos(&proto_files, &[root])
.expect("Failed to compile protos");
let descriptor_set = std::fs::read(descriptor_path).expect("Failed to read descriptor set");
pbjson_build::Builder::new()
.register_descriptors(&descriptor_set)
.expect("Failed to register descriptors")
.preserve_proto_field_names()
.build(&[".objdiff"])
.expect("Failed to build pbjson");
}