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Tue, 02 Jun 2026 08:15:55 -0700 (PDT) X-Received: by 2002:a17:906:6a0f:b0:bee:875d:af12 with SMTP id a640c23a62f3a-bf05a82e2a3mr7841266b.0.1780413355332; Tue, 02 Jun 2026 08:15:55 -0700 (PDT) MIME-Version: 1.0 From: Max Gilmour <max.gilmour@canonical.com> Date: Tue, 2 Jun 2026 08:15:43 -0700 X-Gm-Features: AVHnY4Klt8-3Vs4JoZsjZymaTfSfke1tDhjBDgzKbh9lfnRdLjnfBRVEUu5K3jU Message-ID: <CALYDzCOQgOAJ8qp-VsTAcBt_6WRu19ZGhW=0rOH1vgdSdEcwmw@mail.gmail.com> Subject: llvm-toolchain-22: WASI preview targets can't find compiler-rt builtins in flat library layout To: submit@bugs.debian.org Content-Type: multipart/mixed; boundary="0000000000009955ba065346c91a" Delivered-To: submit@bugs.debian.org --0000000000009955ba065346c91a Content-Type: multipart/alternative; boundary="0000000000009955b9065346c918" --0000000000009955b9065346c918 Content-Type: text/plain; charset="UTF-8" Source: llvm-toolchain-22 Version: 1:22.1.6-1 Severity: normal Tags: patch Dear Maintainer, Currently, clang searches for compiler-rt builtins for WASI preview targets (wasm32-wasip{1,2,3}) in the wrong place. Namely, instead of searching for /usr/lib/llvm-22/lib/clang/22/lib/wasi/libclang_rt.builtins-wasm32.a, clang-22 instead searches for /usr/lib/llvm-22/lib/clang/22/lib/wasip{1,2,3}/libclang_rt.builtins-wasm32.a. This bug was originally reported in Ubuntu LP: #2152147[1] but is also reproducible upstream. I have submitted an issue[2] and a PR[3] to the upstream LLVM project. I have included a patch which fixes the problem by making clang search for wasip{1,2,3} builtins under the "wasi" folder which compiler-rt installs them in. Steps to reproduce in a fresh Debian sid install: # apt update # apt install -y clang-22 libclang-rt-22-dev-wasm32 libc++-22-dev-wasm32 lld-22 $ touch test.c $ clang-22 --target=wasm32-wasip1 test.c wasm-ld-22: error: cannot open /usr/lib/llvm-22/lib/clang/22/lib/wasm32-unknown-wasip1/libclang_rt.builtins.a: No such file or directory clang-22: error: linker command failed with exit code 1 (use -v to see invocation) [1]: https://bugs.launchpad.net/ubuntu/+source/llvm-toolchain-22/+bug/2152147 [2]: https://github.com/llvm/llvm-project/issues/200500 [3]: https://github.com/llvm/llvm-project/pull/200501 --0000000000009955b9065346c918 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable <div dir=3D"ltr">Source: llvm-toolchain-22<br>Version: 1:22.1.6-1<br>Severi= ty: normal<br>Tags: patch<br><br>Dear Maintainer,<br><br>Currently, clang s= earches for compiler-rt builtins for WASI preview<br>targets (wasm32-wasip{= 1,2,3}) in the wrong place. Namely, instead of<br>searching for<br>/usr/lib= /llvm-22/lib/clang/22/lib/wasi/libclang_rt.builtins-wasm32.a,<br>clang-22 i= nstead searches for<br>/usr/lib/llvm-22/lib/clang/22/lib/wasip{1,2,3}/libcl= ang_rt.builtins-wasm32.a.<br><br>This bug was originally reported in Ubuntu= LP: #2152147[1] but is also<br>reproducible upstream. I have submitted an = issue[2] and a PR[3] to<br>the upstream LLVM project.<br><br>I have include= d a patch which fixes the problem by making clang search<br>for wasip{1,2,3= } builtins under the "wasi" folder which compiler-rt<br>installs = them in.<br><br>Steps to reproduce in a fresh Debian sid install:<br><br># = apt update<br># apt install -y clang-22 libclang-rt-22-dev-wasm32 libc++-22= -dev-wasm32 lld-22<br>$ touch test.c<br>$ clang-22 --target=3Dwasm32-wasip1= test.c<br>wasm-ld-22: error: cannot open /usr/lib/llvm-22/lib/clang/22/lib= /wasm32-unknown-wasip1/libclang_rt.builtins.a: No such file or directory<br= >clang-22: error: linker command failed with exit code 1 (use -v to see inv= ocation)<br><br>[1]: <a href=3D"https://bugs.launchpad.net/ubuntu/+source/l= lvm-toolchain-22/+bug/2152147">https://bugs.launchpad.net/ubuntu/+source/ll= vm-toolchain-22/+bug/2152147</a><br>[2]: <a href=3D"https://github.com/llvm= /llvm-project/issues/200500">https://github.com/llvm/llvm-project/issues/20= 0500</a><br>[3]: <a href=3D"https://github.com/llvm/llvm-project/pull/20050= 1">https://github.com/llvm/llvm-project/pull/200501</a></div> --0000000000009955b9065346c918-- --0000000000009955ba065346c91a Content-Type: text/x-patch; charset="US-ASCII"; name="fix-wasi-path-search.patch" Content-Disposition: attachment; filename="fix-wasi-path-search.patch" Content-Transfer-Encoding: base64 Content-ID: <f_mpws36ny0> X-Attachment-Id: f_mpws36ny0 RGVzY3JpcHRpb246IEZpeCBwYXRoIGxvb2t1cCBmb3IgV0FTSSBwcmV2aWV3cwogZ2V0T1MoKSBy ZXR1cm5zIHRoZSB3cm9uZyBwYXRoIGZvciBXQVNJIHByZXZpZXcgdGFyZ2V0cyAod2FzbS13YXNp cDEsCiB3YXNtLXdhc2lwMiwgYW5kIHdhc20td2FzaXAzKS4gRm9yIGV4YW1wbGUsIHBhc3NpbmcK IC0tdGFyZ2V0PXdhc20zMi13YXNpcDEgcmV0dXJucyAid2FzaXAxIi4gSG93ZXZlciwKIGxpYmNs YW5nLXJ0LTIyLWRldi13YXNtMzIgaW5zdGFsbHMgd2FzbTMyIGNvbXBpbGVyLXJ0IGJ1aWx0aW5z IHVuZGVyCiB0aGUgIndhc2kiIGRpcmVjdG9yeSwgbm90IHRoZSAid2FzaXAxIiBkaXJlY3Rvcnks IG1lYW5pbmcgdGhhdCB0aGUKIHRvb2xjaGFpbiBpcyB1bmFibGUgdG8gZmluZCB0aGUgYnVpbHRp bnMgaXQgbmVlZHMuCiAuCiBUaGlzIHBhdGNoIG1ha2VzIGdldE9TKCkgcmV0dXJuIHRoZSAid2Fz aSIgZGlyZWN0b3J5IHdoZW4gYW55IFdBU0kKIHByZXZpZXcgdGFyZ2V0IGlzIHVzZWQsIGFsbG93 aW5nIHRoZSB0b29sY2hhaW4gdG8gZmluZCB0aGUgcHJvcGVyIHdhc2kKIGJ1aWx0aW5zLgpBdXRo b3I6IE1heCBHaWxtb3VyIDxtYXguZ2lsbW91ckBjYW5vbmljYWwuY29tPgpCdWc6IGh0dHBzOi8v Z2l0aHViLmNvbS9sbHZtL2xsdm0tcHJvamVjdC9pc3N1ZXMvMjAwNTAwCkJ1Zy1VYnVudHU6IGh0 dHBzOi8vYnVncy5sYXVuY2hwYWQubmV0L3VidW50dS8rc291cmNlL2xsdm0tdG9vbGNoYWluLTIy LytidWcvMjE1MjE0NwpBcHBsaWVkLVVwc3RyZWFtOiBodHRwczovL2dpdGh1Yi5jb20vbGx2bS9s bHZtLXByb2plY3QvcHVsbC8yMDA1MDEKTGFzdC1VcGRhdGU6IDIwMjYtMDUtMjkKLS0tCi0tLSBh L2NsYW5nL2xpYi9Ecml2ZXIvVG9vbENoYWluLmNwcAorKysgYi9jbGFuZy9saWIvRHJpdmVyL1Rv b2xDaGFpbi5jcHAKQEAgLTcxNyw2ICs3MTcsMTAgQEAKICAgICByZXR1cm4gInN1bm9zIjsKICAg Y2FzZSBsbHZtOjpUcmlwbGU6OkFJWDoKICAgICByZXR1cm4gImFpeCI7CisgIGNhc2UgbGx2bTo6 VHJpcGxlOjpXQVNJcDE6CisgIGNhc2UgbGx2bTo6VHJpcGxlOjpXQVNJcDI6CisgIGNhc2UgbGx2 bTo6VHJpcGxlOjpXQVNJcDM6CisgICAgcmV0dXJuICJ3YXNpIjsKICAgZGVmYXVsdDoKICAgICBy ZXR1cm4gZ2V0T1MoKTsKICAgfQo= --0000000000009955ba065346c91a-- ]