vendor: use bindgen-cli instead of bindgen library
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fa3fdbff2d
commit
a151711d86
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@ -23,6 +23,8 @@ members = [
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"crates/util/keyfork-prompt",
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"crates/util/keyfork-slip10-test-data",
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"crates/util/smex",
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"vendor/v4l2-sys-mit-0.3.0",
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"vendor/nettle-sys-2.3.0",
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]
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[profile.dev.package.keyfork-qrcode]
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@ -1,6 +1,8 @@
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//!
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use std::fs;
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use std::io::{self, Write};
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use std::path::{Path, PathBuf};
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use std::process;
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/// Like std::env::var, but informs cargo.
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///
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@ -10,7 +12,7 @@ use std::path::{Path, PathBuf};
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/// If we look at an environment variable, we need to tell cargo that
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/// we're doing so. This makes sure that cargo will consider the
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/// build stale if the value of the environment variable changes.
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fn env_var<K>(key: K)-> std::result::Result<String, std::env::VarError>
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fn env_var<K>(key: K) -> std::result::Result<String, std::env::VarError>
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where
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K: AsRef<std::ffi::OsStr>,
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{
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@ -40,7 +42,8 @@ struct Config {
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/// Nettle version number to gate features.
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#[allow(dead_code)]
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fn is_version_at_least<V: AsRef<str>>(nettle_version: V, need: &[u8]) -> bool {
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for (i, (n, component)) in need.iter()
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for (i, (n, component)) in need
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.iter()
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.zip(nettle_version.as_ref().split('.'))
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.enumerate()
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{
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@ -53,8 +56,13 @@ fn is_version_at_least<V: AsRef<str>>(nettle_version: V, need: &[u8]) -> bool {
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// Compare the next component.
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}
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} else {
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panic!("Failed to parse the {}th component of the Nettle version \
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{:?}: {:?}", i + 1, nettle_version.as_ref(), component);
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panic!(
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"Failed to parse the {}th component of the Nettle version \
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{:?}: {:?}",
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i + 1,
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nettle_version.as_ref(),
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component
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);
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}
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}
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@ -64,11 +72,11 @@ fn is_version_at_least<V: AsRef<str>>(nettle_version: V, need: &[u8]) -> bool {
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/// Returns whether or not the feature detection should be overridden,
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/// and if so, whether the feature should be enabled.
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fn check_override(feature: &str) -> Option<bool> {
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env_var(&format!("NETTLE_HAVE_{}", feature))
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.ok()
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.map(|v| match v.to_lowercase().as_str() {
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"1" | "y" | "yes" | "enable" | "true" => true,
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_ => false,
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env_var(format!("NETTLE_HAVE_{}", feature)).ok().map(|v| {
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matches!(
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v.to_lowercase().as_str(),
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"1" | "y" | "yes" | "enable" | "true"
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)
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})
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}
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@ -78,23 +86,24 @@ fn check_cc(includes: &[PathBuf], header: &str, symbol: &str) -> bool {
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let wd = tempfile::tempdir()?;
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let testpath = wd.path().join("test.c");
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let mut testfile = fs::File::create(&testpath)?;
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write!(testfile, "#include <nettle/{}>
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write!(
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testfile,
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"#include <nettle/{}>
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int
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main()
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{{
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(void) {};
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}}
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", header, symbol)?;
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",
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header, symbol
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)?;
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let tool = cc::Build::new()
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.warnings(false)
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.includes(includes)
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.try_get_compiler()?;
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let output = tool.to_command()
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.current_dir(&wd)
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.arg(&testpath)
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.output()?;
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let output = tool.to_command().current_dir(&wd).arg(&testpath).output()?;
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Ok(output.status.success())
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};
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t().unwrap_or(false)
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@ -103,15 +112,12 @@ main()
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/// Checks whether Nettle supports Curve 448.
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fn check_cv448(includes: &[PathBuf]) -> bool {
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check_override("CV448")
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.unwrap_or_else(|| check_cc(includes, "eddsa.h",
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"nettle_ed448_shake256_sign"))
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.unwrap_or_else(|| check_cc(includes, "eddsa.h", "nettle_ed448_shake256_sign"))
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}
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/// Checks whether Nettle supports OCB mode.
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fn check_ocb(includes: &[PathBuf]) -> bool {
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check_override("OCB")
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.unwrap_or_else(|| check_cc(includes, "ocb.h",
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"nettle_ocb_encrypt"))
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check_override("OCB").unwrap_or_else(|| check_cc(includes, "ocb.h", "nettle_ocb_encrypt"))
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}
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#[cfg(target_env = "msvc")]
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@ -128,10 +134,13 @@ fn try_vcpkg() -> Result<Config> {
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}
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#[cfg(not(target_env = "msvc"))]
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fn try_vcpkg() -> Result<Config> { Err("not applicable")?; unreachable!() }
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fn try_vcpkg() -> Result<Config> {
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Err("not applicable")?;
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unreachable!()
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}
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fn try_pkg_config() -> Result<Config> {
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let mut nettle= Library::from(pkg_config::probe_library("nettle")?)
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let mut nettle = Library::from(pkg_config::probe_library("nettle")?)
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.merge(pkg_config::probe_library("hogweed")?.into());
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// GMP only got pkg-config support in release 6.2 (2020-01-18). So we'll try to use it if
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@ -171,14 +180,23 @@ fn real_main() -> Result<()> {
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println!("cargo:rustc-link-lib=static=gmp");
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}
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let out_path = Path::new(&env_var("OUT_DIR").unwrap()).join("bindings.rs");
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let out_dir = PathBuf::from(env_var("OUT_DIR").unwrap());
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let out_path = out_dir.join("bindings.rs");
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let in_file_path = out_dir.join("bindgen-wrapper.h");
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fs::copy("bindgen-wrapper.h", &in_file_path).unwrap();
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let mut in_file = fs::OpenOptions::new()
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.append(true)
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.open(&in_file_path)
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.unwrap();
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in_file.write_all(b"\n").unwrap();
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// Check if we have a bundled bindings.rs.
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if let Ok(bundled) = env_var(NETTLE_PREGENERATED_BINDINGS)
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{
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if let Ok(bundled) = env_var(NETTLE_PREGENERATED_BINDINGS) {
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let p = Path::new(&bundled);
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if p.exists() {
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fs::copy(&p, &out_path)?;
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fs::copy(p, &out_path)?;
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println!("cargo:rerun-if-changed={:?}", p);
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// We're done.
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@ -186,6 +204,19 @@ fn real_main() -> Result<()> {
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}
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}
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#[rustfmt::skip]
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let mut flags = vec![
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"--blocklist-type".to_string(), "max_align_t".to_string(),
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"--blocklist-function".to_string(), "strtold".to_string(),
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"--blocklist-function".to_string(), "qecvt".to_string(),
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"--blocklist-function".to_string(), "qfcvt".to_string(),
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"--blocklist-function".to_string(), "qgcvt".to_string(),
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"--blocklist-function".to_string(), "qecvt_r".to_string(),
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"--blocklist-function".to_string(), "qfcvt_r".to_string(),
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in_file_path.display().to_string(),
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];
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/*
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let mut builder = bindgen::Builder::default()
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// Includes all nettle headers except mini-gmp.h
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.header("bindgen-wrapper.h")
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@ -197,25 +228,52 @@ fn real_main() -> Result<()> {
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.blocklist_function("qgcvt")
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.blocklist_function("qecvt_r")
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.blocklist_function("qfcvt_r")
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.size_t_is_usize(true);
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.size_t_is_usize(true); // default: true
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*/
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if config.have_cv448 {
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builder = builder.header_contents("cv448-wrapper.h", "#include <nettle/curve448.h>");
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in_file.write_all(b"#include <nettle/curve448.h>\n").unwrap();
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// builder = builder.header_contents("cv448-wrapper.h", "#include <nettle/curve448.h>");
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}
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if config.have_ocb {
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builder = builder.header_contents("ocb-wrapper.h", "#include <nettle/ocb.h>");
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in_file.write_all(b"#include <nettle/ocb.h>\n").unwrap();
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// builder = builder.header_contents("ocb-wrapper.h", "#include <nettle/ocb.h>");
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}
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if !config.include_paths.is_empty() {
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flags.push("--".to_string());
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for p in config.include_paths {
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builder = builder.clang_arg(format!("-I{}", p.display()));
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flags.push("-I".to_string());
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flags.push(p.display().to_string())
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// builder = builder.clang_arg(format!("-I{}", p.display()));
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}
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}
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drop(in_file);
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println!("flags: {flags:?}");
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let bindings = process::Command::new("bindgen")
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.args(flags)
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.output()
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.expect("Failed to generate bindings");
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assert!(
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bindings.status.success(),
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"Error generating bindings: {}",
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String::from_utf8_lossy(&bindings.stdout)
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);
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fs::write(&out_path, bindings.stdout.as_slice()).expect("Failed to write bindings");
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/*
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let bindings = builder.generate().unwrap();
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bindings.write_to_file(&out_path)?;
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*/
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let mut s = fs::OpenOptions::new().append(true).open(out_path)?;
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writeln!(s, "\
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writeln!(
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s,
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"\
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/// Compile-time configuration.
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pub mod config {{
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/// Cv448/Ed448 support in Nettle.
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@ -225,16 +283,15 @@ pub mod config {{
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pub const HAVE_OCB: bool = {};
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}}
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",
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config.have_cv448,
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config.have_ocb,
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config.have_cv448, config.have_ocb,
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)?;
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if ! config.have_cv448 {
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if !config.have_cv448 {
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let mut stubs = fs::File::open("cv448-stubs.rs")?;
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io::copy(&mut stubs, &mut s)?;
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}
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if ! config.have_ocb {
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if !config.have_ocb {
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let mut stubs = fs::File::open("ocb-stubs.rs")?;
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io::copy(&mut stubs, &mut s)?;
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}
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@ -257,38 +314,52 @@ fn main() -> Result<()> {
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}
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fn print_hints() {
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eprintln!("Please make sure the necessary build dependencies are \
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installed.\n");
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eprintln!(
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"Please make sure the necessary build dependencies are \
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installed.\n"
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);
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if cfg!(target_os = "windows") {
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eprintln!("If you are using MSYS2, try:
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eprintln!(
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"If you are using MSYS2, try:
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$ pacman -S mingw-w64-x86_64-{{clang,pkg-config,nettle}} libnettle-devel
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");
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"
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);
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} else if cfg!(target_os = "macos") {
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eprintln!("If you are using MacPorts, try:
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eprintln!(
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"If you are using MacPorts, try:
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$ sudo port install nettle pkgconfig
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");
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"
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);
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} else if cfg!(target_os = "linux") {
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eprintln!("If you are using Debian (or a derivative), try:
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eprintln!(
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"If you are using Debian (or a derivative), try:
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$ sudo apt install clang llvm pkg-config nettle-dev
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");
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"
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);
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eprintln!("If you are using Arch (or a derivative), try:
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eprintln!(
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"If you are using Arch (or a derivative), try:
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$ sudo pacman -S clang pkg-config nettle --needed
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");
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"
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);
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eprintln!("If you are using Fedora (or a derivative), try:
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eprintln!(
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"If you are using Fedora (or a derivative), try:
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$ sudo dnf install clang pkg-config nettle-devel
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");
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"
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);
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}
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eprintln!("See https://gitlab.com/sequoia-pgp/nettle-sys#building \
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for more information.\n");
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eprintln!(
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"See https://gitlab.com/sequoia-pgp/nettle-sys#building \
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for more information.\n"
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);
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}
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/// Writes a log message to /tmp/l.
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@ -297,8 +368,12 @@ fn print_hints() {
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/// function.
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#[allow(dead_code)]
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fn log<S: AsRef<str>>(m: S) {
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writeln!(&mut fs::OpenOptions::new().append(true).open("/tmp/l").unwrap(),
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"{}", m.as_ref()).unwrap();
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writeln!(
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&mut fs::OpenOptions::new().append(true).open("/tmp/l").unwrap(),
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"{}",
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m.as_ref()
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)
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.unwrap();
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}
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/// Somewhat like pkg_config::Library, but only with the parts we use.
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@ -1,16 +1,15 @@
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extern crate bindgen;
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use std::env;
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use std::fs;
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use std::path::PathBuf;
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use std::process::Command;
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fn main() {
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let bindings = bindgen::Builder::default()
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.header("wrapper.h")
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.generate()
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let bindings = Command::new("bindgen")
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.arg("wrapper.h")
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.output()
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.expect("Failed to generate bindings");
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let out_path = PathBuf::from(env::var("OUT_DIR").unwrap());
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bindings
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.write_to_file(out_path.join("v4l2_bindings.rs"))
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fs::write(out_path.join("v4l2_bindings.rs"), bindings.stdout.as_slice())
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.expect("Failed to write bindings");
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}
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