build.rs swaps the dynamic import library with the static archive from webview2-com-sys, so the WebView2 loader code is baked into the exe. msvc_compat.rs provides the MSVC CRT symbols (security cookie, thread-safe init, C++ operators) that the MSVC-compiled static library expects.
82 lines
2.7 KiB
Rust
82 lines
2.7 KiB
Rust
fn main() {
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// Ensure MinGW tools are on PATH for build scripts (windres, dlltool, etc.)
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let mingw_bin = "C:/Users/lashman/mingw-w64/mingw64/bin";
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if let Ok(current_path) = std::env::var("PATH") {
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std::env::set_var("PATH", format!("{};{}", mingw_bin, current_path));
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} else {
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std::env::set_var("PATH", mingw_bin);
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}
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// On GNU targets, replace the WebView2Loader import library with the static
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// library so the loader is baked into the exe — no DLL to ship.
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#[cfg(target_env = "gnu")]
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swap_webview2_to_static();
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tauri_build::build()
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}
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/// Replace `WebView2Loader.dll.lib` (dynamic import lib) with the contents of
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/// `WebView2LoaderStatic.lib` (static archive) in the webview2-com-sys build
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/// output. The linker then statically links the WebView2 loader code, removing
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/// the runtime dependency on WebView2Loader.dll.
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#[cfg(target_env = "gnu")]
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fn swap_webview2_to_static() {
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use std::fs;
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use std::path::PathBuf;
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let out_dir = std::env::var("OUT_DIR").unwrap_or_default();
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// OUT_DIR = target/.../build/core-cooldown-HASH/out
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// We need: target/.../build/ (two levels up)
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let build_dir = PathBuf::from(&out_dir)
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.parent() // core-cooldown-HASH
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.and_then(|p| p.parent()) // build/
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.map(|p| p.to_path_buf());
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let build_dir = match build_dir {
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Some(d) => d,
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None => return,
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};
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let target_arch = match std::env::var("CARGO_CFG_TARGET_ARCH")
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.unwrap_or_default()
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.as_str()
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{
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"x86_64" => "x64",
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"x86" => "x86",
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"aarch64" => "arm64",
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_ => return,
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};
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let entries = match fs::read_dir(&build_dir) {
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Ok(e) => e,
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Err(_) => return,
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};
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for entry in entries.flatten() {
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let name = entry.file_name();
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let name = name.to_string_lossy();
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if !name.starts_with("webview2-com-sys-") {
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continue;
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}
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let lib_dir = entry.path().join("out").join(target_arch);
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let import_lib = lib_dir.join("WebView2Loader.dll.lib");
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let static_lib = lib_dir.join("WebView2LoaderStatic.lib");
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if static_lib.exists() && import_lib.exists() {
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if let Ok(static_bytes) = fs::read(&static_lib) {
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match fs::write(&import_lib, &static_bytes) {
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Ok(_) => println!(
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"cargo:warning=Swapped WebView2Loader to static linking ({})",
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lib_dir.display()
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),
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Err(e) => println!(
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"cargo:warning=Failed to swap WebView2Loader lib: {}",
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e
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),
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}
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}
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}
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}
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}
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