https://github.com/alexcrichton created https://github.com/llvm/llvm-project/pull/84569
This commit changes the default linker in the WebAssembly toolchain for the `wasm32-wasip2` target. This target is being added to the WebAssembly/wasi-sdk and WebAssembly/wasi-libc projects to target the Component Model by default, in contrast with the preexisting `wasm32-wasi` target (in the process of being renamed to `wasm32-wasip1`) which outputs a core WebAssembly module by default. The `wasm-component-ld` project currently lives in my GitHub account at https://github.com/alexcrichton/wasm-component-ld and isn't necessarily "official" yet, but it's expected to continue to evolve as the `wasm32-wasip2` target continues to shape up and evolve. >From fb90a737233a9f8928c44c4563c0f0ad33a68142 Mon Sep 17 00:00:00 2001 From: Alex Crichton <a...@alexcrichton.com> Date: Fri, 8 Mar 2024 13:36:18 -0800 Subject: [PATCH] [WebAssembly] Change the default linker for `wasm32-wasip2` This commit changes the default linker in the WebAssembly toolchain for the `wasm32-wasip2` target. This target is being added to the WebAssembly/wasi-sdk and WebAssembly/wasi-libc projects to target the Component Model by default, in contrast with the preexisting `wasm32-wasi` target (in the process of being renamed to `wasm32-wasip1`) which outputs a core WebAssembly module by default. The `wasm-component-ld` project currently lives in my GitHub account at https://github.com/alexcrichton/wasm-component-ld and isn't necessarily "official" yet, but it's expected to continue to evolve as the `wasm32-wasip2` target continues to shape up and evolve. --- clang/lib/Driver/ToolChains/WebAssembly.cpp | 6 ++++++ clang/lib/Driver/ToolChains/WebAssembly.h | 2 +- clang/test/Driver/wasm-toolchain.c | 8 ++++++++ 3 files changed, 15 insertions(+), 1 deletion(-) diff --git a/clang/lib/Driver/ToolChains/WebAssembly.cpp b/clang/lib/Driver/ToolChains/WebAssembly.cpp index b8c2573d6265fb..a6c43c627f7206 100644 --- a/clang/lib/Driver/ToolChains/WebAssembly.cpp +++ b/clang/lib/Driver/ToolChains/WebAssembly.cpp @@ -221,6 +221,12 @@ WebAssembly::WebAssembly(const Driver &D, const llvm::Triple &Triple, } } +const char *WebAssembly::getDefaultLinker() const { + if (getOS() == "wasip2") + return "wasm-component-ld"; + return "wasm-ld"; +} + bool WebAssembly::IsMathErrnoDefault() const { return false; } bool WebAssembly::IsObjCNonFragileABIDefault() const { return true; } diff --git a/clang/lib/Driver/ToolChains/WebAssembly.h b/clang/lib/Driver/ToolChains/WebAssembly.h index ae60f464c10818..76e0ca39bd748d 100644 --- a/clang/lib/Driver/ToolChains/WebAssembly.h +++ b/clang/lib/Driver/ToolChains/WebAssembly.h @@ -67,7 +67,7 @@ class LLVM_LIBRARY_VISIBILITY WebAssembly final : public ToolChain { llvm::opt::ArgStringList &CmdArgs) const override; SanitizerMask getSupportedSanitizers() const override; - const char *getDefaultLinker() const override { return "wasm-ld"; } + const char *getDefaultLinker() const override; CXXStdlibType GetDefaultCXXStdlibType() const override { return ToolChain::CST_Libcxx; diff --git a/clang/test/Driver/wasm-toolchain.c b/clang/test/Driver/wasm-toolchain.c index f950283ec42aa0..5f18e56f79b657 100644 --- a/clang/test/Driver/wasm-toolchain.c +++ b/clang/test/Driver/wasm-toolchain.c @@ -197,3 +197,11 @@ // RUN: not %clang -### %s --target=wasm32-unknown-unknown --sysroot=%s/no-sysroot-there -fPIC -mno-mutable-globals %s 2>&1 \ // RUN: | FileCheck -check-prefix=PIC_NO_MUTABLE_GLOBALS %s // PIC_NO_MUTABLE_GLOBALS: error: invalid argument '-fPIC' not allowed with '-mno-mutable-globals' + +// Test that `wasm32-wasip2` invokes a the `wasm-component-ld` linker by default +// instead of `wasm-ld`. + +// RUN: %clang -### -O2 --target=wasm32-wasip2 %s --sysroot /foo 2>&1 \ +// RUN: | FileCheck -check-prefix=LINK_WASIP2 %s +// LINK_WASIP2: "-cc1" {{.*}} "-o" "[[temp:[^"]*]]" +// LINK_WASIP2: wasm-component-ld{{.*}}" "-L/foo/lib/wasm32-wasip2" "crt1.o" "[[temp]]" "-lc" "{{.*[/\\]}}libclang_rt.builtins-wasm32.a" "-o" "a.out" _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
