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wasi libc upgrade #5507

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wasi libc upgrade #5507

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657e1dc
lib/wasi-libc: upgrade to wasi-sdk-32
dgryski Jul 7, 2026
36fb419
wasip2: build against wasi-libc instead of the Go mini-libc
dgryski Jul 7, 2026
d5e35bc
GNUmakefile: package wasi-libc-wasip2-stub.c in release builds
dgryski Jul 7, 2026
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1 change: 1 addition & 0 deletions GNUmakefile
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Original file line number Diff line number Diff line change
Expand Up @@ -1182,6 +1182,7 @@ endif
@cp -rp lib/wasi-libc/libc-top-half/musl/src/time build/release/tinygo/lib/wasi-libc/libc-top-half/musl/src
@cp -rp lib/wasi-libc/libc-top-half/musl/src/unistd build/release/tinygo/lib/wasi-libc/libc-top-half/musl/src
@cp -rp lib/wasi-libc/libc-top-half/sources build/release/tinygo/lib/wasi-libc/libc-top-half
@cp -rp lib/wasi-libc-wasip2-stub.c build/release/tinygo/lib
@cp -rp lib/wasi-cli/wit build/release/tinygo/lib/wasi-cli/wit
@cp -rp ${LLVM_PROJECTDIR}/compiler-rt/lib/builtins build/release/tinygo/lib/compiler-rt-builtins
@cp -rp ${LLVM_PROJECTDIR}/compiler-rt/LICENSE.TXT build/release/tinygo/lib/compiler-rt-builtins
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6 changes: 5 additions & 1 deletion builder/build.go
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Expand Up @@ -167,7 +167,11 @@ func Build(pkgName, outpath, tmpdir string, config *compileopts.Config) (BuildRe
defer unlock()
libcDependencies = append(libcDependencies, libcJob)
case "wasi-libc":
libcJob, unlock, err := libWasiLibc.load(config, tmpdir)
lib := libWasiLibc
if slices.Contains(config.BuildTags(), "wasip2") {
lib = libWasiLibcWasip2
}
libcJob, unlock, err := lib.load(config, tmpdir)
if err != nil {
return BuildResult{}, err
}
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