vendor: use bindgen-cli instead of bindgen library

Cargo.toml

@@ -23,6 +23,8 @@ members = [
     "crates/util/keyfork-prompt",
     "crates/util/keyfork-slip10-test-data",
     "crates/util/smex",
+    "vendor/v4l2-sys-mit-0.3.0",
+    "vendor/nettle-sys-2.3.0",
 ]
 
 [profile.dev.package.keyfork-qrcode]

vendor/nettle-sys-2.3.0/build.rs

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

vendor/v4l2-sys-mit-0.3.0/build.rs

@@ -1,16 +1,15 @@
-extern crate bindgen;
-
 use std::env;
+use std::fs;
 use std::path::PathBuf;
+use std::process::Command;
 
 fn main() {
-    let bindings = bindgen::Builder::default()
+    let bindings = Command::new("bindgen")
-        .header("wrapper.h")
+        .arg("wrapper.h")
-        .generate()
+        .output()
         .expect("Failed to generate bindings");
 
     let out_path = PathBuf::from(env::var("OUT_DIR").unwrap());
-    bindings
+    fs::write(out_path.join("v4l2_bindings.rs"), bindings.stdout.as_slice())
-        .write_to_file(out_path.join("v4l2_bindings.rs"))
         .expect("Failed to write bindings");
 }