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Description: Fix the 'bindgen' feature
The 'bindgen' feature is used to (re)generate the Rust bindings to the
C library. It should not be needed since the bindings are included in
the crate anyway, but in case it is, we fix it by generating them from
the C headers included in the liblmdb-dev package and saving them to
OUT_DIR. Note: the bindings are not generated if we cannot find the
system headers in the easiest way possible.
Author: NoisyCoil <noisycoil@tutanota.com>
Forwarded: not-needed
Last-Update: 2024-11-10
---
This patch header follows DEP-3: http://dep.debian.net/deps/dep3/
--- a/bindgen.rs
+++ b/bindgen.rs
@@ -45,15 +45,12 @@
}
pub fn generate() {
- let mut lmdb = PathBuf::from(&env::var("CARGO_MANIFEST_DIR").unwrap());
- lmdb.push("lmdb");
- lmdb.push("libraries");
- lmdb.push("liblmdb");
+ let Ok(lmdblib) = pkg_config::probe_library("lmdb") else { return; };
+ let Some(lmdb) = lmdblib.include_paths.first() else { return; };
- let mut out_path = PathBuf::from(&env::var("CARGO_MANIFEST_DIR").unwrap());
- out_path.push("src");
+ let out_path = PathBuf::from(&env::var("OUT_DIR").unwrap());
- let bindings = bindgen::Builder::default()
+ let Ok(bindings) = bindgen::Builder::default()
.header(lmdb.join("lmdb.h").to_string_lossy())
.allowlist_var("^(MDB|mdb)_.*")
.allowlist_type("^(MDB|mdb)_.*")
@@ -67,8 +64,7 @@
.parse_callbacks(Box::new(Callbacks {}))
.layout_tests(false)
.prepend_enum_name(false)
- .generate()
- .expect("Unable to generate bindings");
+ .generate() else { return; };
bindings
.write_to_file(out_path.join("bindings.rs"))
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