Files
neon/postgres_ffi/build.rs
anastasia 0969574d48 Use bindgen for various xlog structures and checkpoint.
Implement encode/decode methods for them.

Some methods are unused now. This is a preparatory commit for nonrel_wal
2021-06-09 01:00:42 +03:00

58 lines
2.2 KiB
Rust

extern crate bindgen;
use std::env;
use std::path::PathBuf;
fn main() {
// Tell cargo to invalidate the built crate whenever the wrapper changes
println!("cargo:rerun-if-changed=pg_control_ffi.h");
// The bindgen::Builder is the main entry point
// to bindgen, and lets you build up options for
// the resulting bindings.
let bindings = bindgen::Builder::default()
//
// All the needed PostgreSQL headers are included from 'pg_control_ffi.h'
//
.header("pg_control_ffi.h")
//
// Tell cargo to invalidate the built crate whenever any of the
// included header files changed.
//
.parse_callbacks(Box::new(bindgen::CargoCallbacks))
//
// These are the types and constants that we want to generate bindings for
//
.whitelist_type("ControlFileData")
.whitelist_type("CheckPoint")
.whitelist_type("FullTransactionId")
.whitelist_type("XLogRecord")
.whitelist_type("XLogPageHeaderData")
.whitelist_type("XLogLongPageHeaderData")
.whitelist_var("XLOG_PAGE_MAGIC")
.whitelist_var("PG_CONTROL_FILE_SIZE")
.whitelist_var("PG_CONTROLFILEDATA_OFFSETOF_CRC")
.whitelist_type("DBState")
//
// Path the server include dir. It is in tmp_install/include/server, if you did
// "configure --prefix=<path to tmp_install>". But if you used "configure --prefix=/",
// and used DESTDIR to move it into tmp_install, then it's in
// tmp_install/include/postgres/server
// 'pg_config --includedir-server' would perhaps be the more proper way to find it,
// but this will do for now.
//
.clang_arg("-I../tmp_install/include/server")
.clang_arg("-I../tmp_install/include/postgresql/server")
//
// Finish the builder and generate the bindings.
//
.generate()
.expect("Unable to generate bindings");
// Write the bindings to the $OUT_DIR/bindings.rs file.
let out_path = PathBuf::from(env::var("OUT_DIR").unwrap());
bindings
.write_to_file(out_path.join("bindings.rs"))
.expect("Couldn't write bindings!");
}