Swift Package IndexBuild Information
Failed to build swift-sdk-generator, reference main (571909), with Swift 6.1 for Wasm on 24 Apr 2026 05:52:22 UTC.
Build Command
bash -c docker run --pull=always --rm -v "checkouts-4609320-0":/host -w "$PWD" -e JAVA_HOME="/root/.sdkman/candidates/java/current" -e SPI_BUILD="1" -e SPI_PROCESSING="1" registry.gitlab.com/swiftpackageindex/spi-images:wasm-6.1-latest swift build --swift-sdk wasm32-unknown-wasi 2>&1Build Log
========================================
RunAll
========================================
Builder version: 4.70.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/swiftlang/swift-sdk-generator.git
Reference: main
Initialized empty Git repository in /host/spi-builder-workspace/.git/
hint: Using 'master' as the name for the initial branch. This default branch name
hint: is subject to change. To configure the initial branch name to use in all
hint: of your new repositories, which will suppress this warning, call:
hint:
hint: git config --global init.defaultBranch <name>
hint:
hint: Names commonly chosen instead of 'master' are 'main', 'trunk' and
hint: 'development'. The just-created branch can be renamed via this command:
hint:
hint: git branch -m <name>
From https://github.com/swiftlang/swift-sdk-generator
* branch main -> FETCH_HEAD
* [new branch] main -> origin/main
HEAD is now at 5719098 Allow merging of multiple Wasm Swift SDKs in a single bundle (#263)
Cloned https://github.com/swiftlang/swift-sdk-generator.git
Revision (git rev-parse @):
57190988c478930fbcee768f6119384e3ad5a0a8
SUCCESS checkout https://github.com/swiftlang/swift-sdk-generator.git at main
========================================
Build
========================================
Selected platform: wasm
Swift version: 6.1
Building package at path: $PWD
https://github.com/swiftlang/swift-sdk-generator.git
https://github.com/swiftlang/swift-sdk-generator.git
WARNING: environment variable SUPPRESS_SWIFT_6_FLAGS is not set
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4609320-0":/host -w "$PWD" -e JAVA_HOME="/root/.sdkman/candidates/java/current" -e SPI_BUILD="1" -e SPI_PROCESSING="1" registry.gitlab.com/swiftpackageindex/spi-images:wasm-6.1-latest swift build --swift-sdk wasm32-unknown-wasi -Xswiftc -Xfrontend -Xswiftc -stats-output-dir -Xswiftc -Xfrontend -Xswiftc .stats -Xswiftc -strict-concurrency=complete -Xswiftc -enable-upcoming-feature -Xswiftc StrictConcurrency -Xswiftc -enable-upcoming-feature -Xswiftc DisableOutwardActorInference -Xswiftc -enable-upcoming-feature -Xswiftc GlobalActorIsolatedTypesUsability -Xswiftc -enable-upcoming-feature -Xswiftc InferSendableFromCaptures 2>&1
wasm-6.1-latest: Pulling from swiftpackageindex/spi-images
Digest: sha256:276d66a16377d3ee059b2e3429cbc1154d9f01e42871e5d702fd5d8b9044d93d
Status: Image is up to date for registry.gitlab.com/swiftpackageindex/spi-images:wasm-6.1-latest
Fetching https://github.com/apple/swift-atomics.git
Fetching https://github.com/apple/swift-nio.git
Fetching https://github.com/apple/swift-collections.git
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Fetching https://github.com/apple/swift-async-algorithms.git
Fetching https://github.com/apple/swift-crypto.git
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Fetched https://github.com/apple/swift-distributed-tracing.git from cache (0.63s)
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Creating working copy for https://github.com/apple/swift-http-structured-headers.git
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Creating working copy for https://github.com/apple/swift-asn1.git
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warning: couldn't find pc file for sqlite3
warning: couldn't find pc file for sqlite3
[1/1] Compiling plugin GenerateManual
[2/2] Compiling plugin GenerateDoccReference
Building for debugging...
[2/868] Write sources
[15/868] Compiling _CWASI _CWASI.c
[16/868] Compiling _NumericsShims _NumericsShims.c
[17/868] Write sources
[35/868] Compiling aesv8-gcm-armv8-linux.S
[36/868] Compiling CNIOWindows shim.c
[37/868] Compiling CNIOWindows WSAStartup.c
[38/868] Compiling CSystem shims.c
[39/868] Compiling _AtomicsShims.c
[40/868] Compiling CNIOWASI CNIOWASI.c
[41/868] Compiling CNIOPosix event_loop_id.c
[42/868] Compiling CNIOOpenBSD shim.c
[43/868] Compiling CNIOLinux shim.c
[44/868] Compiling CNIOLinux liburing_shims.c
[45/868] Compiling CNIOLLHTTP c_nio_http.c
[46/868] Compiling CNIOLLHTTP c_nio_api.c
[47/868] Compiling CNIOExtrasZlib empty.c
[48/868] Compiling CNIODarwin shim.c
[49/868] Compiling fiat_p256_adx_sqr.S
[50/868] Compiling fiat_p256_adx_mul.S
In file included from /host/spi-builder-workspace/Sources/CProcessSpawnSync/spawner.c:16:
/root/.swiftpm/swift-sdks/swift-wasm-6.1-RELEASE-wasm32-unknown-wasi.artifactbundle/6.1-RELEASE-wasm32-unknown-wasi/wasm32-unknown-wasi/WASI.sdk/include/wasm32-wasi/signal.h:2:2: error: "wasm lacks signal support; to enable minimal signal emulation, compile with -D_WASI_EMULATED_SIGNAL and link with -lwasi-emulated-signal"
2 | #error "wasm lacks signal support; to enable minimal signal emulation, \
| ^
/host/spi-builder-workspace/Sources/CProcessSpawnSync/spawner.c:23:10: fatal error: 'pthread.h' file not found
23 | #include <pthread.h>
| ^~~~~~~~~~~
2 errors generated.
[51/868] Compiling CProcessSpawnSync spawner.c
[51/868] Compiling fiat_curve25519_adx_square.S
[51/868] Compiling siphash.cc
[51/868] Compiling CNIOLLHTTP c_nio_llhttp.c
[51/868] Write swift-version-24593BA9C3E375BF.txt
[51/868] Compiling socket_helper.cc
[51/868] Compiling CNIOBoringSSLShims shims.c
[51/868] Compiling d1_pkt.cc
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4609320-0":/host -w "$PWD" -e JAVA_HOME="/root/.sdkman/candidates/java/current" -e SPI_BUILD="1" -e SPI_PROCESSING="1" registry.gitlab.com/swiftpackageindex/spi-images:wasm-6.1-latest swift build --swift-sdk wasm32-unknown-wasi 2>&1
wasm-6.1-latest: Pulling from swiftpackageindex/spi-images
Digest: sha256:276d66a16377d3ee059b2e3429cbc1154d9f01e42871e5d702fd5d8b9044d93d
Status: Image is up to date for registry.gitlab.com/swiftpackageindex/spi-images:wasm-6.1-latest
warning: couldn't find pc file for sqlite3
warning: couldn't find pc file for sqlite3
[0/1] Planning build
[1/1] Compiling plugin GenerateManual
[2/2] Compiling plugin GenerateDoccReference
Building for debugging...
[2/819] Write sources
[8/819] Compiling fiat_curve25519_adx_square.S
[9/819] Compiling fiat_curve25519_adx_mul.S
In file included from /host/spi-builder-workspace/Sources/CProcessSpawnSync/spawner.c:16:
/root/.swiftpm/swift-sdks/swift-wasm-6.1-RELEASE-wasm32-unknown-wasi.artifactbundle/6.1-RELEASE-wasm32-unknown-wasi/wasm32-unknown-wasi/WASI.sdk/include/wasm32-wasi/signal.h:2:2: error: "wasm lacks signal support; to enable minimal signal emulation, compile with -D_WASI_EMULATED_SIGNAL and link with -lwasi-emulated-signal"
2 | #error "wasm lacks signal support; to enable minimal signal emulation, \
| ^
/host/spi-builder-workspace/Sources/CProcessSpawnSync/spawner.c:23:10: fatal error: 'pthread.h' file not found
23 | #include <pthread.h>
| ^~~~~~~~~~~
2 errors generated.
[10/819] Compiling CProcessSpawnSync spawner.c
[10/819] Compiling CNIOBoringSSLShims shims.c
[10/819] Compiling tls_method.cc
[10/819] Compiling tls13_server.cc
[10/819] Compiling CNIOLLHTTP c_nio_llhttp.c
[10/819] Compiling tls_record.cc
[10/819] Compiling tls13_enc.cc
[10/819] Write swift-version-24593BA9C3E375BF.txt
BUILD FAILURE 6.1 wasm