From: Jakub Jirutka <jakub@jirutka.cz>
Date: Fri, 21 Jul 2023 13:22:58 +0200
Date: Wed, 30 Apr 2025 23:12:25 +0200
Subject: [PATCH] Never download anything, enable verbose logging, link with system libraries

Linking libatomic to fix this error:

    = note: ld.lld: error: undefined symbol: __atomic_compare_exchange
            >>> referenced by isolate.cc
            >>>               isolate.o:(v8::internal::JSDispatchTable::TryAllocateAndInitializeEntry(v8::internal::ExternalEntityTable<v8::internal::JSDispatchEntry, 268435456ul>::SpaceWithBlackAllocationSupport*, unsigned short, v8::internal::Tagged<v8::internal::Code>)) in archive /builds/alpine/aports/community/deno/src/deno/target/release/deps/libv8-97fcce57012ba75f.rlib
            >>> referenced by wasm-objects.cc
            >>>               wasm-objects.o:(v8::internal::WasmDispatchTableData::~WasmDispatchTableData()) in archive /builds/alpine/aports/community/deno/src/deno/target/release/deps/libv8-97fcce57012ba75f.rlib
            >>> referenced by wasm-objects.cc
            >>>               wasm-objects.o:(v8::internal::WasmDispatchTableData::Remove(int, v8::internal::WasmCodePointer)) in archive /builds/alpine/aports/community/deno/src/deno/target/release/deps/libv8-97fcce57012ba75f.rlib
            >>> referenced 6 more times
            clang++: error: linker command failed with exit code 1 (use -v to see invocation)

Linking with system simdutf requires also v8-unbundle-simdutf.patch.

--- a/vendor/v8/build.rs
+++ b/vendor/v8/build.rs
@@ -223,6 +223,9 @@
     println!("clang_base_path (system): {}", clang_base_path.display());
     gn_args.push(format!("clang_base_path={clang_base_path:?}"));
     gn_args.push("treat_warnings_as_errors=false".to_string());
+  // XXX-Patched
+  } else if true {
+    panic!("no compatible clang found");
   } else {
     println!("using Chromium's clang");
     let clang_base_path = clang_download();
@@ -253,16 +256,18 @@
   // cross-compilation setup
   if target_arch == "aarch64" {
     gn_args.push(r#"target_cpu="arm64""#.to_string());
-    gn_args.push("use_sysroot=true".to_string());
-    maybe_install_sysroot("arm64");
-    maybe_install_sysroot("amd64");
+    // XXX-Patched
+    //gn_args.push("use_sysroot=true".to_string());
+    //maybe_install_sysroot("arm64");
+    //maybe_install_sysroot("amd64");
   }
   if target_arch == "arm" {
     gn_args.push(r#"target_cpu="arm""#.to_string());
     gn_args.push(r#"v8_target_cpu="arm""#.to_string());
-    gn_args.push("use_sysroot=true".to_string());
-    maybe_install_sysroot("i386");
-    maybe_install_sysroot("arm");
+    // XXX-Patched
+    //gn_args.push("use_sysroot=true".to_string());
+    //maybe_install_sysroot("i386");
+    //maybe_install_sysroot("arm");
   }
 
   let target_triple = env::var("TARGET").unwrap();
@@ -345,6 +350,7 @@
 }
 
 fn maybe_clone_repo(dest: &str, repo: &str) {
+  panic!("Won't clone repo {}", repo);  // XXX-Patched
   if !Path::new(&dest).exists() {
     assert!(
       Command::new("git")
@@ -374,6 +380,7 @@
 }
 
 fn download_ninja_gn_binaries() {
+  panic!("gn and ninja must be installed");  // XXX-Patched
   let target_dir = build_dir().join("ninja_gn_binaries");
 
   let gn = target_dir.join("gn").join("gn");
@@ -494,6 +501,7 @@
 }
 
 fn download_file(url: &str, filename: &Path) {
+  panic!("Won't download file: {}", url);  // XXX-Patched
   if !url.starts_with("http:") && !url.starts_with("https:") {
     copy_archive(url, filename);
     return;
@@ -566,6 +574,8 @@
 }
 
 fn download_static_lib_binaries() {
+  panic!("Won't download library");  // XXX-Patched
+
   let url = static_lib_url();
   println!("static lib URL: {url}");
 
@@ -699,6 +709,20 @@
       println!("cargo:rustc-link-lib=dylib=msvcprt");
     }
   }
+
+  // XXX-Patched: v8 requires symbols provided by libatomic.so.
+  println!("cargo:rustc-link-lib=dylib=atomic");
+
+  // XXX-Patched: Link with system-provided zlib.
+  println!("cargo:rustc-link-lib=dylib=z");
+
+  // XXX-Patched: Link with system-provided ICU libraries.
+  println!("cargo:rustc-link-lib=dylib=icui18n");
+  println!("cargo:rustc-link-lib=dylib=icuuc");
+  println!("cargo:rustc-link-lib=dylib=icudata");
+
+  // XXX-Patched: Link with system-provided simdutf library.
+  println!("cargo:rustc-link-lib=dylib=simdutf");
 }
 
 fn print_prebuilt_src_binding_path() {
@@ -917,6 +941,7 @@
 fn ninja(gn_out_dir: &Path, maybe_env: Option<NinjaEnv>) -> Command {
   let cmd_string = env::var("NINJA").unwrap_or_else(|_| "ninja".to_owned());
   let mut cmd = Command::new(&cmd_string);
+  cmd.arg("-v");  // XXX-Patched
   cmd.arg("-C");
   cmd.arg(gn_out_dir);
   if !cmd_string.ends_with("autoninja") {
@@ -957,6 +982,7 @@
         .arg(format!("--script-executable={}", python()))
         .arg("gen")
         .arg(&gn_out_dir)
+        .arg("-vv")  // XXX-Patched
         .arg("--ide=json")
         .arg("--args=".to_owned() + &args)
         .stdout(Stdio::inherit())