Adding upstream version 124.0.1.upstream/124.0.1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 836 insertions, 0 deletions

diff --git a/third_party/rust/libsqlite3-sys/build.rs b/third_party/rust/libsqlite3-sys/build.rs
new file mode 100644
index 0000000000..cff173eb29
--- /dev/null
+++ b/third_party/rust/libsqlite3-sys/build.rs
@@ -0,0 +1,836 @@
+use std::env;
+use std::path::Path;
+
+/// Tells whether we're building for Windows. This is more suitable than a plain
+/// `cfg!(windows)`, since the latter does not properly handle cross-compilation
+///
+/// Note that there is no way to know at compile-time which system we'll be
+/// targetting, and this test must be made at run-time (of the build script) See
+/// https://doc.rust-lang.org/cargo/reference/environment-variables.html#environment-variables-cargo-sets-for-build-scripts
+fn win_target() -> bool {
+    env::var("CARGO_CFG_WINDOWS").is_ok()
+}
+
+/// Tells whether we're building for Android.
+/// See [`win_target`]
+#[cfg(any(feature = "bundled", feature = "bundled-windows"))]
+fn android_target() -> bool {
+    env::var("CARGO_CFG_TARGET_OS").map_or(false, |v| v == "android")
+}
+
+/// Tells whether a given compiler will be used `compiler_name` is compared to
+/// the content of `CARGO_CFG_TARGET_ENV` (and is always lowercase)
+///
+/// See [`win_target`]
+fn is_compiler(compiler_name: &str) -> bool {
+    env::var("CARGO_CFG_TARGET_ENV").map_or(false, |v| v == compiler_name)
+}
+
+/// Copy bindgen file from `dir` to `out_path`.
+fn copy_bindings<T: AsRef<Path>>(dir: &str, bindgen_name: &str, out_path: T) {
+    let from = if cfg!(feature = "loadable_extension") {
+        format!("{dir}/{bindgen_name}_ext.rs")
+    } else {
+        format!("{dir}/{bindgen_name}.rs")
+    };
+    std::fs::copy(from, out_path).expect("Could not copy bindings to output directory");
+}
+
+fn main() {
+    let out_dir = env::var("OUT_DIR").unwrap();
+    let out_path = Path::new(&out_dir).join("bindgen.rs");
+    if cfg!(feature = "in_gecko") {
+        // When inside mozilla-central, we are included into the build with
+        // sqlite3.o directly, so we don't want to provide any linker arguments.
+        copy_bindings("sqlite3", "bindgen_bundled_version", out_path);
+        return;
+    }
+
+    println!("cargo:rerun-if-env-changed=LIBSQLITE3_SYS_USE_PKG_CONFIG");
+    if env::var_os("LIBSQLITE3_SYS_USE_PKG_CONFIG").map_or(false, |s| s != "0")
+        || cfg!(feature = "loadable_extension")
+    {
+        build_linked::main(&out_dir, &out_path);
+    } else if cfg!(all(
+        feature = "sqlcipher",
+        not(feature = "bundled-sqlcipher")
+    )) {
+        if cfg!(feature = "bundled") || (win_target() && cfg!(feature = "bundled-windows")) {
+            println!(
+                "cargo:warning=For backwards compatibility, feature 'sqlcipher' overrides
+                features 'bundled' and 'bundled-windows'. If you want a bundled build of
+                SQLCipher (available for the moment only on Unix), use feature 'bundled-sqlcipher'
+                or 'bundled-sqlcipher-vendored-openssl' to also bundle OpenSSL crypto."
+            );
+        }
+        build_linked::main(&out_dir, &out_path);
+    } else if cfg!(feature = "bundled")
+        || (win_target() && cfg!(feature = "bundled-windows"))
+        || cfg!(feature = "bundled-sqlcipher")
+    {
+        #[cfg(any(
+            feature = "bundled",
+            feature = "bundled-windows",
+            feature = "bundled-sqlcipher"
+        ))]
+        build_bundled::main(&out_dir, &out_path);
+        #[cfg(not(any(
+            feature = "bundled",
+            feature = "bundled-windows",
+            feature = "bundled-sqlcipher"
+        )))]
+        panic!("The runtime test should not run this branch, which has not compiled any logic.")
+    } else {
+        build_linked::main(&out_dir, &out_path);
+    }
+}
+
+#[cfg(any(
+    feature = "bundled",
+    feature = "bundled-windows",
+    feature = "bundled-sqlcipher"
+))]
+mod build_bundled {
+    use std::env;
+    use std::ffi::OsString;
+    use std::path::{Path, PathBuf};
+
+    use super::{is_compiler, win_target};
+
+    pub fn main(out_dir: &str, out_path: &Path) {
+        let lib_name = super::lib_name();
+
+        // This is just a sanity check, the top level `main` should ensure this.
+        assert!(!(cfg!(feature = "bundled-windows") && !cfg!(feature = "bundled") && !win_target()),
+            "This module should not be used: we're not on Windows and the bundled feature has not been enabled");
+
+        #[cfg(feature = "buildtime_bindgen")]
+        {
+            use super::{bindings, HeaderLocation};
+            let header = HeaderLocation::FromPath(lib_name.to_owned());
+            bindings::write_to_out_dir(header, out_path);
+        }
+        #[cfg(not(feature = "buildtime_bindgen"))]
+        {
+            super::copy_bindings(lib_name, "bindgen_bundled_version", out_path);
+        }
+        println!("cargo:rerun-if-changed={lib_name}/sqlite3.c");
+        println!("cargo:rerun-if-changed=sqlite3/wasm32-wasi-vfs.c");
+        let mut cfg = cc::Build::new();
+        cfg.file(format!("{lib_name}/sqlite3.c"))
+            .flag("-DSQLITE_CORE")
+            .flag("-DSQLITE_DEFAULT_FOREIGN_KEYS=1")
+            .flag("-DSQLITE_ENABLE_API_ARMOR")
+            .flag("-DSQLITE_ENABLE_COLUMN_METADATA")
+            .flag("-DSQLITE_ENABLE_DBSTAT_VTAB")
+            .flag("-DSQLITE_ENABLE_FTS3")
+            .flag("-DSQLITE_ENABLE_FTS3_PARENTHESIS")
+            .flag("-DSQLITE_ENABLE_FTS5")
+            .flag("-DSQLITE_ENABLE_JSON1")
+            .flag("-DSQLITE_ENABLE_LOAD_EXTENSION=1")
+            .flag("-DSQLITE_ENABLE_MEMORY_MANAGEMENT")
+            .flag("-DSQLITE_ENABLE_RTREE")
+            .flag("-DSQLITE_ENABLE_STAT2")
+            .flag("-DSQLITE_ENABLE_STAT4")
+            .flag("-DSQLITE_SOUNDEX")
+            .flag("-DSQLITE_THREADSAFE=1")
+            .flag("-DSQLITE_USE_URI")
+            .flag("-DHAVE_USLEEP=1")
+            .flag("-D_POSIX_THREAD_SAFE_FUNCTIONS") // cross compile with MinGW
+            .warnings(false);
+
+        if cfg!(feature = "bundled-sqlcipher") {
+            cfg.flag("-DSQLITE_HAS_CODEC").flag("-DSQLITE_TEMP_STORE=2");
+
+            let target = env::var("TARGET").unwrap();
+            let host = env::var("HOST").unwrap();
+
+            let is_windows = host.contains("windows") && target.contains("windows");
+            let is_apple = host.contains("apple") && target.contains("apple");
+
+            let lib_dir = env("OPENSSL_LIB_DIR").map(PathBuf::from);
+            let inc_dir = env("OPENSSL_INCLUDE_DIR").map(PathBuf::from);
+            let mut use_openssl = false;
+
+            let (lib_dir, inc_dir) = match (lib_dir, inc_dir) {
+                (Some(lib_dir), Some(inc_dir)) => {
+                    use_openssl = true;
+                    (lib_dir, inc_dir)
+                }
+                (lib_dir, inc_dir) => match find_openssl_dir(&host, &target) {
+                    None => {
+                        if is_windows && !cfg!(feature = "bundled-sqlcipher-vendored-openssl") {
+                            panic!("Missing environment variable OPENSSL_DIR or OPENSSL_DIR is not set")
+                        } else {
+                            (PathBuf::new(), PathBuf::new())
+                        }
+                    }
+                    Some(openssl_dir) => {
+                        let lib_dir = lib_dir.unwrap_or_else(|| openssl_dir.join("lib"));
+                        let inc_dir = inc_dir.unwrap_or_else(|| openssl_dir.join("include"));
+
+                        assert!(
+                            Path::new(&lib_dir).exists(),
+                            "OpenSSL library directory does not exist: {}",
+                            lib_dir.to_string_lossy()
+                        );
+
+                        if !Path::new(&inc_dir).exists() {
+                            panic!(
+                                "OpenSSL include directory does not exist: {}",
+                                inc_dir.to_string_lossy()
+                            );
+                        }
+
+                        use_openssl = true;
+                        (lib_dir, inc_dir)
+                    }
+                },
+            };
+
+            if cfg!(feature = "bundled-sqlcipher-vendored-openssl") {
+                cfg.include(env::var("DEP_OPENSSL_INCLUDE").unwrap());
+                // cargo will resolve downstream to the static lib in
+                // openssl-sys
+            } else if use_openssl {
+                cfg.include(inc_dir.to_string_lossy().as_ref());
+                let lib_name = if is_windows { "libcrypto" } else { "crypto" };
+                println!("cargo:rustc-link-lib=dylib={}", lib_name);
+                println!("cargo:rustc-link-search={}", lib_dir.to_string_lossy());
+            } else if is_apple {
+                cfg.flag("-DSQLCIPHER_CRYPTO_CC");
+                println!("cargo:rustc-link-lib=framework=Security");
+                println!("cargo:rustc-link-lib=framework=CoreFoundation");
+            } else {
+                // branch not taken on Windows, just `crypto` is fine.
+                println!("cargo:rustc-link-lib=dylib=crypto");
+            }
+        }
+
+        // on android sqlite can't figure out where to put the temp files.
+        // the bundled sqlite on android also uses `SQLITE_TEMP_STORE=3`.
+        // https://android.googlesource.com/platform/external/sqlite/+/2c8c9ae3b7e6f340a19a0001c2a889a211c9d8b2/dist/Android.mk
+        if super::android_target() {
+            cfg.flag("-DSQLITE_TEMP_STORE=3");
+        }
+
+        if cfg!(feature = "with-asan") {
+            cfg.flag("-fsanitize=address");
+        }
+
+        // If explicitly requested: enable static linking against the Microsoft Visual
+        // C++ Runtime to avoid dependencies on vcruntime140.dll and similar libraries.
+        if cfg!(target_feature = "crt-static") && is_compiler("msvc") {
+            cfg.static_crt(true);
+        }
+
+        // Older versions of visual studio don't support c99 (including isnan), which
+        // causes a build failure when the linker fails to find the `isnan`
+        // function. `sqlite` provides its own implementation, using the fact
+        // that x != x when x is NaN.
+        //
+        // There may be other platforms that don't support `isnan`, they should be
+        // tested for here.
+        if is_compiler("msvc") {
+            use cc::windows_registry::{find_vs_version, VsVers};
+            let vs_has_nan = match find_vs_version() {
+                Ok(ver) => ver != VsVers::Vs12,
+                Err(_msg) => false,
+            };
+            if vs_has_nan {
+                cfg.flag("-DHAVE_ISNAN");
+            }
+        } else {
+            cfg.flag("-DHAVE_ISNAN");
+        }
+        if !win_target() {
+            cfg.flag("-DHAVE_LOCALTIME_R");
+        }
+        // Target wasm32-wasi can't compile the default VFS
+        if env::var("TARGET").map_or(false, |v| v == "wasm32-wasi") {
+            cfg.flag("-DSQLITE_OS_OTHER")
+                // https://github.com/rust-lang/rust/issues/74393
+                .flag("-DLONGDOUBLE_TYPE=double");
+            if cfg!(feature = "wasm32-wasi-vfs") {
+                cfg.file("sqlite3/wasm32-wasi-vfs.c");
+            }
+        }
+        if cfg!(feature = "unlock_notify") {
+            cfg.flag("-DSQLITE_ENABLE_UNLOCK_NOTIFY");
+        }
+        if cfg!(feature = "preupdate_hook") {
+            cfg.flag("-DSQLITE_ENABLE_PREUPDATE_HOOK");
+        }
+        if cfg!(feature = "session") {
+            cfg.flag("-DSQLITE_ENABLE_SESSION");
+        }
+
+        if let Ok(limit) = env::var("SQLITE_MAX_VARIABLE_NUMBER") {
+            cfg.flag(&format!("-DSQLITE_MAX_VARIABLE_NUMBER={limit}"));
+        }
+        println!("cargo:rerun-if-env-changed=SQLITE_MAX_VARIABLE_NUMBER");
+
+        if let Ok(limit) = env::var("SQLITE_MAX_EXPR_DEPTH") {
+            cfg.flag(&format!("-DSQLITE_MAX_EXPR_DEPTH={limit}"));
+        }
+        println!("cargo:rerun-if-env-changed=SQLITE_MAX_EXPR_DEPTH");
+
+        if let Ok(limit) = env::var("SQLITE_MAX_COLUMN") {
+            cfg.flag(&format!("-DSQLITE_MAX_COLUMN={limit}"));
+        }
+        println!("cargo:rerun-if-env-changed=SQLITE_MAX_COLUMN");
+
+        if let Ok(extras) = env::var("LIBSQLITE3_FLAGS") {
+            for extra in extras.split_whitespace() {
+                if extra.starts_with("-D") || extra.starts_with("-U") {
+                    cfg.flag(extra);
+                } else if extra.starts_with("SQLITE_") {
+                    cfg.flag(&format!("-D{extra}"));
+                } else {
+                    panic!("Don't understand {} in LIBSQLITE3_FLAGS", extra);
+                }
+            }
+        }
+        println!("cargo:rerun-if-env-changed=LIBSQLITE3_FLAGS");
+
+        cfg.compile(lib_name);
+
+        println!("cargo:lib_dir={out_dir}");
+    }
+
+    fn env(name: &str) -> Option<OsString> {
+        let prefix = env::var("TARGET").unwrap().to_uppercase().replace('-', "_");
+        let prefixed = format!("{prefix}_{name}");
+        let var = env::var_os(prefixed);
+
+        match var {
+            None => env::var_os(name),
+            _ => var,
+        }
+    }
+
+    fn find_openssl_dir(_host: &str, _target: &str) -> Option<PathBuf> {
+        let openssl_dir = env("OPENSSL_DIR");
+        openssl_dir.map(PathBuf::from)
+    }
+}
+
+fn env_prefix() -> &'static str {
+    if cfg!(any(feature = "sqlcipher", feature = "bundled-sqlcipher")) {
+        "SQLCIPHER"
+    } else {
+        "SQLITE3"
+    }
+}
+
+fn lib_name() -> &'static str {
+    if cfg!(any(feature = "sqlcipher", feature = "bundled-sqlcipher")) {
+        "sqlcipher"
+    } else if cfg!(all(windows, feature = "winsqlite3")) {
+        "winsqlite3"
+    } else {
+        "sqlite3"
+    }
+}
+
+pub enum HeaderLocation {
+    FromEnvironment,
+    Wrapper,
+    FromPath(String),
+}
+
+impl From<HeaderLocation> for String {
+    fn from(header: HeaderLocation) -> String {
+        match header {
+            HeaderLocation::FromEnvironment => {
+                let prefix = env_prefix();
+                let mut header = env::var(format!("{prefix}_INCLUDE_DIR")).unwrap_or_else(|_| {
+                    panic!(
+                        "{}_INCLUDE_DIR must be set if {}_LIB_DIR is set",
+                        prefix, prefix
+                    )
+                });
+                header.push_str(if cfg!(feature = "loadable_extension") {
+                    "/sqlite3ext.h"
+                } else {
+                    "/sqlite3.h"
+                });
+                header
+            }
+            HeaderLocation::Wrapper => if cfg!(feature = "loadable_extension") {
+                "wrapper_ext.h"
+            } else {
+                "wrapper.h"
+            }
+            .into(),
+            HeaderLocation::FromPath(path) => format!(
+                "{}/{}",
+                path,
+                if cfg!(feature = "loadable_extension") {
+                    "sqlite3ext.h"
+                } else {
+                    "sqlite3.h"
+                }
+            ),
+        }
+    }
+}
+
+mod build_linked {
+    #[cfg(feature = "vcpkg")]
+    extern crate vcpkg;
+
+    use super::{bindings, env_prefix, is_compiler, lib_name, win_target, HeaderLocation};
+    use std::env;
+    use std::path::Path;
+
+    pub fn main(_out_dir: &str, out_path: &Path) {
+        let header = find_sqlite();
+        if (cfg!(any(
+            feature = "bundled_bindings",
+            feature = "bundled",
+            feature = "bundled-sqlcipher"
+        )) || (win_target() && cfg!(feature = "bundled-windows")))
+            && !cfg!(feature = "buildtime_bindgen")
+        {
+            // Generally means the `bundled_bindings` feature is enabled.
+            // Most users are better off with turning
+            // on buildtime_bindgen instead, but this is still supported as we
+            // have runtime version checks and there are good reasons to not
+            // want to run bindgen.
+            super::copy_bindings(lib_name(), "bindgen_bundled_version", out_path);
+        } else {
+            bindings::write_to_out_dir(header, out_path);
+        }
+    }
+
+    #[cfg(not(feature = "loadable_extension"))]
+    fn find_link_mode() -> &'static str {
+        // If the user specifies SQLITE3_STATIC (or SQLCIPHER_STATIC), do static
+        // linking, unless it's explicitly set to 0.
+        match &env::var(format!("{}_STATIC", env_prefix())) {
+            Ok(v) if v != "0" => "static",
+            _ => "dylib",
+        }
+    }
+    // Prints the necessary cargo link commands and returns the path to the header.
+    fn find_sqlite() -> HeaderLocation {
+        let link_lib = lib_name();
+
+        println!("cargo:rerun-if-env-changed={}_INCLUDE_DIR", env_prefix());
+        println!("cargo:rerun-if-env-changed={}_LIB_DIR", env_prefix());
+        println!("cargo:rerun-if-env-changed={}_STATIC", env_prefix());
+        if cfg!(feature = "vcpkg") && is_compiler("msvc") {
+            println!("cargo:rerun-if-env-changed=VCPKGRS_DYNAMIC");
+        }
+
+        // dependents can access `DEP_SQLITE3_LINK_TARGET` (`sqlite3` being the
+        // `links=` value in our Cargo.toml) to get this value. This might be
+        // useful if you need to ensure whatever crypto library sqlcipher relies
+        // on is available, for example.
+        #[cfg(not(feature = "loadable_extension"))]
+        println!("cargo:link-target={link_lib}");
+
+        if win_target() && cfg!(feature = "winsqlite3") {
+            #[cfg(not(feature = "loadable_extension"))]
+            println!("cargo:rustc-link-lib=dylib={link_lib}");
+            return HeaderLocation::Wrapper;
+        }
+
+        // Allow users to specify where to find SQLite.
+        if let Ok(dir) = env::var(format!("{}_LIB_DIR", env_prefix())) {
+            // Try to use pkg-config to determine link commands
+            let pkgconfig_path = Path::new(&dir).join("pkgconfig");
+            env::set_var("PKG_CONFIG_PATH", pkgconfig_path);
+            #[cfg(not(feature = "loadable_extension"))]
+            if pkg_config::Config::new().probe(link_lib).is_err() {
+                // Otherwise just emit the bare minimum link commands.
+                println!("cargo:rustc-link-lib={}={link_lib}", find_link_mode());
+                println!("cargo:rustc-link-search={dir}");
+            }
+            return HeaderLocation::FromEnvironment;
+        }
+
+        if let Some(header) = try_vcpkg() {
+            return header;
+        }
+
+        // See if pkg-config can do everything for us.
+        if let Ok(mut lib) = pkg_config::Config::new()
+            .print_system_libs(false)
+            .probe(link_lib)
+        {
+            if let Some(header) = lib.include_paths.pop() {
+                HeaderLocation::FromPath(header.to_string_lossy().into())
+            } else {
+                HeaderLocation::Wrapper
+            }
+        } else {
+            // No env var set and pkg-config couldn't help; just output the link-lib
+            // request and hope that the library exists on the system paths. We used to
+            // output /usr/lib explicitly, but that can introduce other linking problems;
+            // see https://github.com/rusqlite/rusqlite/issues/207.
+            #[cfg(not(feature = "loadable_extension"))]
+            println!("cargo:rustc-link-lib={}={link_lib}", find_link_mode());
+            HeaderLocation::Wrapper
+        }
+    }
+
+    fn try_vcpkg() -> Option<HeaderLocation> {
+        if cfg!(feature = "vcpkg") && is_compiler("msvc") {
+            // See if vcpkg can find it.
+            if let Ok(mut lib) = vcpkg::Config::new().probe(lib_name()) {
+                if let Some(header) = lib.include_paths.pop() {
+                    return Some(HeaderLocation::FromPath(header.to_string_lossy().into()));
+                }
+            }
+            None
+        } else {
+            None
+        }
+    }
+}
+
+#[cfg(not(feature = "buildtime_bindgen"))]
+mod bindings {
+    #![allow(dead_code)]
+    use super::HeaderLocation;
+
+    use std::path::Path;
+
+    static PREBUILT_BINDGENS: &[&str] = &["bindgen_3.14.0"];
+
+    pub fn write_to_out_dir(_header: HeaderLocation, out_path: &Path) {
+        let name = PREBUILT_BINDGENS[PREBUILT_BINDGENS.len() - 1];
+        super::copy_bindings("bindgen-bindings", name, out_path);
+    }
+}
+
+#[cfg(feature = "buildtime_bindgen")]
+mod bindings {
+    use super::HeaderLocation;
+    use bindgen::callbacks::{IntKind, ParseCallbacks};
+
+    use std::path::Path;
+
+    use super::win_target;
+
+    #[derive(Debug)]
+    struct SqliteTypeChooser;
+
+    impl ParseCallbacks for SqliteTypeChooser {
+        fn int_macro(&self, name: &str, _value: i64) -> Option<IntKind> {
+            if name == "SQLITE_SERIALIZE_NOCOPY"
+                || name.starts_with("SQLITE_DESERIALIZE_")
+                || name.starts_with("SQLITE_PREPARE_")
+            {
+                Some(IntKind::UInt)
+            } else {
+                None
+            }
+        }
+    }
+
+    // Are we generating the bundled bindings? Used to avoid emitting things
+    // that would be problematic in bundled builds. This env var is set by
+    // `upgrade.sh`.
+    fn generating_bundled_bindings() -> bool {
+        // Hacky way to know if we're generating the bundled bindings
+        println!("cargo:rerun-if-env-changed=LIBSQLITE3_SYS_BUNDLING");
+        match std::env::var("LIBSQLITE3_SYS_BUNDLING") {
+            Ok(v) => v != "0",
+            Err(_) => false,
+        }
+    }
+
+    pub fn write_to_out_dir(header: HeaderLocation, out_path: &Path) {
+        let header: String = header.into();
+        let mut bindings = bindgen::builder()
+            .default_macro_constant_type(bindgen::MacroTypeVariation::Signed)
+            .disable_nested_struct_naming()
+            .trust_clang_mangling(false)
+            .header(header.clone())
+            .parse_callbacks(Box::new(SqliteTypeChooser));
+        if cfg!(feature = "loadable_extension") {
+            bindings = bindings.ignore_functions(); // see generate_functions
+        } else {
+            bindings = bindings
+                .blocklist_function("sqlite3_auto_extension")
+                .raw_line(
+                    r#"extern "C" {
+    pub fn sqlite3_auto_extension(
+        xEntryPoint: ::std::option::Option<
+            unsafe extern "C" fn(
+                db: *mut sqlite3,
+                pzErrMsg: *mut *const ::std::os::raw::c_char,
+                pThunk: *const sqlite3_api_routines,
+            ) -> ::std::os::raw::c_int,
+        >,
+    ) -> ::std::os::raw::c_int;
+}"#,
+                )
+                .blocklist_function("sqlite3_cancel_auto_extension")
+                .raw_line(
+                    r#"extern "C" {
+    pub fn sqlite3_cancel_auto_extension(
+        xEntryPoint: ::std::option::Option<
+            unsafe extern "C" fn(
+                db: *mut sqlite3,
+                pzErrMsg: *mut *const ::std::os::raw::c_char,
+                pThunk: *const sqlite3_api_routines,
+            ) -> ::std::os::raw::c_int,
+        >,
+    ) -> ::std::os::raw::c_int;
+}"#,
+                );
+        }
+
+        if cfg!(any(feature = "sqlcipher", feature = "bundled-sqlcipher")) {
+            bindings = bindings.clang_arg("-DSQLITE_HAS_CODEC");
+        }
+        if cfg!(feature = "unlock_notify") {
+            bindings = bindings.clang_arg("-DSQLITE_ENABLE_UNLOCK_NOTIFY");
+        }
+        if cfg!(feature = "preupdate_hook") {
+            bindings = bindings.clang_arg("-DSQLITE_ENABLE_PREUPDATE_HOOK");
+        }
+        if cfg!(feature = "session") {
+            bindings = bindings.clang_arg("-DSQLITE_ENABLE_SESSION");
+        }
+        if win_target() && cfg!(feature = "winsqlite3") {
+            bindings = bindings
+                .clang_arg("-DBINDGEN_USE_WINSQLITE3")
+                .blocklist_item("NTDDI_.+")
+                .blocklist_item("WINAPI_FAMILY.*")
+                .blocklist_item("_WIN32_.+")
+                .blocklist_item("_VCRT_COMPILER_PREPROCESSOR")
+                .blocklist_item("_SAL_VERSION")
+                .blocklist_item("__SAL_H_VERSION")
+                .blocklist_item("_USE_DECLSPECS_FOR_SAL")
+                .blocklist_item("_USE_ATTRIBUTES_FOR_SAL")
+                .blocklist_item("_CRT_PACKING")
+                .blocklist_item("_HAS_EXCEPTIONS")
+                .blocklist_item("_STL_LANG")
+                .blocklist_item("_HAS_CXX17")
+                .blocklist_item("_HAS_CXX20")
+                .blocklist_item("_HAS_NODISCARD")
+                .blocklist_item("WDK_NTDDI_VERSION")
+                .blocklist_item("OSVERSION_MASK")
+                .blocklist_item("SPVERSION_MASK")
+                .blocklist_item("SUBVERSION_MASK")
+                .blocklist_item("WINVER")
+                .blocklist_item("__security_cookie")
+                .blocklist_type("size_t")
+                .blocklist_type("__vcrt_bool")
+                .blocklist_type("wchar_t")
+                .blocklist_function("__security_init_cookie")
+                .blocklist_function("__report_gsfailure")
+                .blocklist_function("__va_start");
+        }
+
+        // When cross compiling unless effort is taken to fix the issue, bindgen
+        // will find the wrong headers. There's only one header included by the
+        // amalgamated `sqlite.h`: `stdarg.h`.
+        //
+        // Thankfully, there's almost no case where rust code needs to use
+        // functions taking `va_list` (It's nearly impossible to get a `va_list`
+        // in Rust unless you get passed it by C code for some reason).
+        //
+        // Arguably, we should never be including these, but we include them for
+        // the cases where they aren't totally broken...
+        let target_arch = std::env::var("TARGET").unwrap();
+        let host_arch = std::env::var("HOST").unwrap();
+        let is_cross_compiling = target_arch != host_arch;
+
+        // Note that when generating the bundled file, we're essentially always
+        // cross compiling.
+        if generating_bundled_bindings() || is_cross_compiling {
+            // Get rid of va_list, as it's not
+            bindings = bindings
+                .blocklist_function("sqlite3_vmprintf")
+                .blocklist_function("sqlite3_vsnprintf")
+                .blocklist_function("sqlite3_str_vappendf")
+                .blocklist_type("va_list")
+                .blocklist_item("__.*");
+        }
+
+        let bindings = bindings
+            .layout_tests(false)
+            .generate()
+            .unwrap_or_else(|_| panic!("could not run bindgen on header {}", header));
+
+        #[cfg(feature = "loadable_extension")]
+        {
+            let mut output = Vec::new();
+            bindings
+                .write(Box::new(&mut output))
+                .expect("could not write output of bindgen");
+            let mut output = String::from_utf8(output).expect("bindgen output was not UTF-8?!");
+            super::loadable_extension::generate_functions(&mut output);
+            std::fs::write(out_path, output.as_bytes())
+                .unwrap_or_else(|_| panic!("Could not write to {:?}", out_path));
+        }
+        #[cfg(not(feature = "loadable_extension"))]
+        bindings
+            .write_to_file(out_path)
+            .unwrap_or_else(|_| panic!("Could not write to {:?}", out_path));
+    }
+}
+
+#[cfg(all(feature = "buildtime_bindgen", feature = "loadable_extension"))]
+mod loadable_extension {
+    /// try to generate similar rust code for all `#define sqlite3_xyz
+    /// sqlite3_api->abc` macros` in sqlite3ext.h
+    pub fn generate_functions(output: &mut String) {
+        // (1) parse sqlite3_api_routines fields from bindgen output
+        let ast: syn::File = syn::parse_str(output).expect("could not parse bindgen output");
+        let sqlite3_api_routines: syn::ItemStruct = ast
+            .items
+            .into_iter()
+            .find_map(|i| {
+                if let syn::Item::Struct(s) = i {
+                    if s.ident == "sqlite3_api_routines" {
+                        Some(s)
+                    } else {
+                        None
+                    }
+                } else {
+                    None
+                }
+            })
+            .expect("could not find sqlite3_api_routines");
+        let sqlite3_api_routines_ident = sqlite3_api_routines.ident;
+        let p_api = quote::format_ident!("p_api");
+        let mut stores = Vec::new();
+        let mut malloc = Vec::new();
+        // (2) `#define sqlite3_xyz sqlite3_api->abc` => `pub unsafe fn
+        // sqlite3_xyz(args) -> ty {...}` for each `abc` field:
+        for field in sqlite3_api_routines.fields {
+            let ident = field.ident.expect("unamed field");
+            let span = ident.span();
+            let name = ident.to_string();
+            if name == "vmprintf" || name == "xvsnprintf" || name == "str_vappendf" {
+                continue; // skip va_list
+            } else if name == "aggregate_count"
+                || name == "expired"
+                || name == "global_recover"
+                || name == "thread_cleanup"
+                || name == "transfer_bindings"
+            {
+                continue; // omit deprecated
+            }
+            let sqlite3_name = match name.as_ref() {
+                "xthreadsafe" => "sqlite3_threadsafe".to_owned(),
+                "interruptx" => "sqlite3_interrupt".to_owned(),
+                _ => {
+                    format!("sqlite3_{name}")
+                }
+            };
+            let ptr_name =
+                syn::Ident::new(format!("__{}", sqlite3_name.to_uppercase()).as_ref(), span);
+            let sqlite3_fn_name = syn::Ident::new(&sqlite3_name, span);
+            let method =
+                extract_method(&field.ty).unwrap_or_else(|| panic!("unexpected type for {name}"));
+            let arg_names: syn::punctuated::Punctuated<&syn::Ident, syn::token::Comma> = method
+                .inputs
+                .iter()
+                .map(|i| &i.name.as_ref().unwrap().0)
+                .collect();
+            let args = &method.inputs;
+            // vtab_config/sqlite3_vtab_config: ok
+            let varargs = &method.variadic;
+            if varargs.is_some() && "db_config" != name && "log" != name && "vtab_config" != name {
+                continue; // skip ...
+            }
+            let ty = &method.output;
+            let tokens = if "db_config" == name {
+                quote::quote! {
+                    static #ptr_name: ::std::sync::atomic::AtomicPtr<()> = ::std::sync::atomic::AtomicPtr::new(::std::ptr::null_mut());
+                    pub unsafe fn #sqlite3_fn_name(#args arg3: ::std::os::raw::c_int, arg4: *mut ::std::os::raw::c_int) #ty {
+                        let ptr = #ptr_name.load(::std::sync::atomic::Ordering::Acquire);
+                        assert!(!ptr.is_null(), "SQLite API not initialized");
+                        let fun: unsafe extern "C" fn(#args #varargs) #ty = ::std::mem::transmute(ptr);
+                        (fun)(#arg_names, arg3, arg4)
+                    }
+                }
+            } else if "log" == name {
+                quote::quote! {
+                    static #ptr_name: ::std::sync::atomic::AtomicPtr<()> = ::std::sync::atomic::AtomicPtr::new(::std::ptr::null_mut());
+                    pub unsafe fn #sqlite3_fn_name(#args arg3: *const ::std::os::raw::c_char) #ty {
+                        let ptr = #ptr_name.load(::std::sync::atomic::Ordering::Acquire);
+                        assert!(!ptr.is_null(), "SQLite API not initialized");
+                        let fun: unsafe extern "C" fn(#args #varargs) #ty = ::std::mem::transmute(ptr);
+                        (fun)(#arg_names, arg3)
+                    }
+                }
+            } else {
+                quote::quote! {
+                    static #ptr_name: ::std::sync::atomic::AtomicPtr<()> = ::std::sync::atomic::AtomicPtr::new(::std::ptr::null_mut());
+                    pub unsafe fn #sqlite3_fn_name(#args) #ty {
+                        let ptr = #ptr_name.load(::std::sync::atomic::Ordering::Acquire);
+                        assert!(!ptr.is_null(), "SQLite API not initialized or SQLite feature omitted");
+                        let fun: unsafe extern "C" fn(#args #varargs) #ty = ::std::mem::transmute(ptr);
+                        (fun)(#arg_names)
+                    }
+                }
+            };
+            output.push_str(&prettyplease::unparse(
+                &syn::parse2(tokens).expect("could not parse quote output"),
+            ));
+            output.push('\n');
+            if name == "malloc" {
+                &mut malloc
+            } else {
+                &mut stores
+            }
+            .push(quote::quote! {
+                if let Some(fun) = (*#p_api).#ident {
+                    #ptr_name.store(
+                        fun as usize as *mut (),
+                        ::std::sync::atomic::Ordering::Release,
+                    );
+                }
+            });
+        }
+        // (3) generate rust code similar to SQLITE_EXTENSION_INIT2 macro
+        let tokens = quote::quote! {
+            /// Like SQLITE_EXTENSION_INIT2 macro
+            pub unsafe fn rusqlite_extension_init2(#p_api: *mut #sqlite3_api_routines_ident) -> ::std::result::Result<(),crate::InitError> {
+                #(#malloc)* // sqlite3_malloc needed by to_sqlite_error
+                if let Some(fun) = (*#p_api).libversion_number {
+                    let version = fun();
+                    if SQLITE_VERSION_NUMBER > version {
+                        return Err(crate::InitError::VersionMismatch{compile_time: SQLITE_VERSION_NUMBER, runtime: version});
+                    }
+                } else {
+                    return Err(crate::InitError::NullFunctionPointer);
+                }
+                #(#stores)*
+                Ok(())
+            }
+        };
+        output.push_str(&prettyplease::unparse(
+            &syn::parse2(tokens).expect("could not parse quote output"),
+        ));
+        output.push('\n');
+    }
+
+    fn extract_method(ty: &syn::Type) -> Option<&syn::TypeBareFn> {
+        match ty {
+            syn::Type::Path(tp) => tp.path.segments.last(),
+            _ => None,
+        }
+        .map(|seg| match &seg.arguments {
+            syn::PathArguments::AngleBracketed(args) => args.args.first(),
+            _ => None,
+        })?
+        .map(|arg| match arg {
+            syn::GenericArgument::Type(t) => Some(t),
+            _ => None,
+        })?
+        .map(|ty| match ty {
+            syn::Type::BareFn(r) => Some(r),
+            _ => None,
+        })?
+    }
+}