Swift Package IndexBuild Information
Failed to build CLua, reference main (ecbd9e), with Swift 6.3 for Wasm on 15 Apr 2026 22:30:12 UTC.
Build Command
bash -c docker run --pull=always --rm -v "checkouts-4609320-1":/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-6.3-latest swift build --swift-sdk swift-6.3-RELEASE_wasm 2>&1Build Log
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RunAll
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Builder version: 4.70.0
Interrupt handler set up.
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Checkout
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Clone URL: https://github.com/SwiftyLua/CLua.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/SwiftyLua/CLua
* branch main -> FETCH_HEAD
* [new branch] main -> origin/main
HEAD is now at ecbd9e1 set swift version to 6.2
Cloned https://github.com/SwiftyLua/CLua.git
Revision (git rev-parse @):
ecbd9e14292b3aa945fc82562097b105de1bee1a
SUCCESS checkout https://github.com/SwiftyLua/CLua.git at main
========================================
Build
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Selected platform: wasm
Swift version: 6.3
Building package at path: $PWD
https://github.com/SwiftyLua/CLua.git
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4609320-1":/host -w "$PWD" -e JAVA_HOME="/root/.sdkman/candidates/java/current" -e SPI_BUILD="1" -e SPI_PROCESSING="1" registry.gitlab.com/swiftpackageindex/spi-images:wasm-6.3-latest swift build --swift-sdk swift-6.3-RELEASE_wasm 2>&1
wasm-6.3-latest: Pulling from swiftpackageindex/spi-images
Digest: sha256:d69f4e7582c319245442d62a08b2d7c7fd5a0c0c69f5d2ef11d1530cd8d3329b
Status: Image is up to date for registry.gitlab.com/swiftpackageindex/spi-images:wasm-6.3-latest
Building for debugging...
[0/35] Compiling CLua lcorolib.c
[1/35] Compiling CLua lctype.c
[1/35] Compiling CLua lbaselib.c
[3/35] Compiling CLua lauxlib.c
In file included from /host/spi-builder-workspace/Sources/CLua/lzio.c:19:
In file included from /host/spi-builder-workspace/Sources/CLua/include/lstate.h:130:
/root/.swiftpm/swift-sdks/swift-6.3-RELEASE_wasm.artifactbundle/swift-6.3-RELEASE_wasm/wasm32-unknown-wasip1/WASI.sdk/include/wasm32-wasip1/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, \
| ^
In file included from /host/spi-builder-workspace/Sources/CLua/lzio.c:19:
/host/spi-builder-workspace/Sources/CLua/include/lstate.h:184:16: error: unknown type name 'sig_atomic_t'
184 | volatile l_signalT trap; /* function is tracing lines/counts */
| ^
/host/spi-builder-workspace/Sources/CLua/include/lstate.h:131:19: note: expanded from macro 'l_signalT'
131 | #define l_signalT sig_atomic_t
| ^
/host/spi-builder-workspace/Sources/CLua/include/lstate.h:331:12: error: unknown type name 'sig_atomic_t'
331 | volatile l_signalT hookmask;
| ^
/host/spi-builder-workspace/Sources/CLua/include/lstate.h:131:19: note: expanded from macro 'l_signalT'
131 | #define l_signalT sig_atomic_t
| ^
3 errors generated.
[4/35] Compiling CLua lzio.c
[4/35] Compiling CLua ltm.c
In file included from /host/spi-builder-workspace/Sources/CLua/lapi.c:19:
In file included from /host/spi-builder-workspace/Sources/CLua/include/lapi.h:12:
In file included from /host/spi-builder-workspace/Sources/CLua/include/lstate.h:130:
/root/.swiftpm/swift-sdks/swift-6.3-RELEASE_wasm.artifactbundle/swift-6.3-RELEASE_wasm/wasm32-unknown-wasip1/WASI.sdk/include/wasm32-wasip1/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, \
| ^
In file included from /host/spi-builder-workspace/Sources/CLua/lapi.c:19:
In file included from /host/spi-builder-workspace/Sources/CLua/include/lapi.h:12:
/host/spi-builder-workspace/Sources/CLua/include/lstate.h:184:16: error: unknown type name 'sig_atomic_t'
184 | volatile l_signalT trap; /* function is tracing lines/counts */
| ^
/host/spi-builder-workspace/Sources/CLua/include/lstate.h:131:19: note: expanded from macro 'l_signalT'
131 | #define l_signalT sig_atomic_t
| ^
/host/spi-builder-workspace/Sources/CLua/include/lstate.h:331:12: error: unknown type name 'sig_atomic_t'
331 | volatile l_signalT hookmask;
| ^
/host/spi-builder-workspace/Sources/CLua/include/lstate.h:131:19: note: expanded from macro 'l_signalT'
131 | #define l_signalT sig_atomic_t
| ^
3 errors generated.
[4/35] Compiling CLua lapi.c
In file included from /host/spi-builder-workspace/Sources/CLua/lvm.c:21:
In file included from /host/spi-builder-workspace/Sources/CLua/include/ldebug.h:11:
In file included from /host/spi-builder-workspace/Sources/CLua/include/lstate.h:130:
/root/.swiftpm/swift-sdks/swift-6.3-RELEASE_wasm.artifactbundle/swift-6.3-RELEASE_wasm/wasm32-unknown-wasip1/WASI.sdk/include/wasm32-wasip1/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, \
| ^
In file included from /host/spi-builder-workspace/Sources/CLua/lvm.c:21:
In file included from /host/spi-builder-workspace/Sources/CLua/include/ldebug.h:11:
/host/spi-builder-workspace/Sources/CLua/include/lstate.h:184:16: error: unknown type name 'sig_atomic_t'
184 | volatile l_signalT trap; /* function is tracing lines/counts */
| ^
/host/spi-builder-workspace/Sources/CLua/include/lstate.h:131:19: note: expanded from macro 'l_signalT'
131 | #define l_signalT sig_atomic_t
| ^
/host/spi-builder-workspace/Sources/CLua/include/lstate.h:331:12: error: unknown type name 'sig_atomic_t'
331 | [4/35] Compiling CLua lutf8lib.c
[4/35] Compiling CLua lvm.c
In file included from /host/spi-builder-workspace/Sources/CLua/lgc.c:18:
In file included from /host/spi-builder-workspace/Sources/CLua/include/ldebug.h:11:
In file included from /host/spi-builder-workspace/Sources/CLua/include/lstate.h:130:
/root/.swiftpm/swift-sdks/swift-6.3-RELEASE_wasm.artifactbundle/swift-6.3-RELEASE_wasm/wasm32-unknown-wasip1/WASI.sdk/include/wasm32-wasip1/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, \
| ^
In file included from /host/spi-builder-workspace/Sources/CLua/lgc.c:18:
In file included from /host/spi-builder-workspace/Sources/CLua/include/ldebug.h:11:
/host/spi-builder-workspace/Sources/CLua/include/lstate.h:184:16: error: unknown type name 'sig_atomic_t'
184 | volatile l_signalT trap; /* function is tracing lines/counts */
| ^
/host/spi-builder-workspace/Sources/CLua/include/lstate.h:131:19: note: expanded from macro 'l_signalT'
131 | #define l_signalT sig_atomic_t
| ^
/host/spi-builder-workspace/Sources/CLua/include/lstate.h:331:12: error: unknown type name 'sig_atomic_t'
331 | volatile l_signalT hookmask;
| ^
/host/spi-builder-workspace/Sources/CLua/include/lstate.h:131:19: note: expanded from macro 'l_signalT'
131 | #define l_signalT sig_atomic_t
| ^
[4/35] Compiling CLua lgc.c
[4/35] Compiling CLua ldblib.c
In file included from /host/spi-builder-workspace/Sources/CLua/lundump.c:18:
In file included from /host/spi-builder-workspace/Sources/CLua/include/ldebug.h:11:
In file included from /host/spi-builder-workspace/Sources/CLua/include/lstate.h:130:
/root/.swiftpm/swift-sdks/swift-6.3-RELEASE_wasm.artifactbundle/swift-6.3-RELEASE_wasm/wasm32-unknown-wasip1/WASI.sdk/include/wasm32-wasip1/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, \
| ^
In file included from /host/spi-builder-workspace/Sources/CLua/lundump.c:18:
In file included from /host/spi-builder-workspace/Sources/CLua/include/ldebug.h:11:
/host/spi-builder-workspace/Sources/CLua/include/lstate.h:184:16: error: unknown type name 'sig_atomic_t'
184 | volatile l_signalT trap; /* function is tracing lines/counts */
| ^
/host/spi-builder-workspace/Sources/CLua/include/lstate.h:131:19: note: expanded from macro 'l_signalT'
131 | #define l_signalT sig_atomic_t
| ^
/host/spi-builder-workspace/Sources/CLua/include/lstate.h:331:12: error: unknown type name 'sig_atomic_t'
331 | volatile l_signalT hookmask;
| ^
/host/spi-builder-workspace/Sources/CLua/include/lstate.h:131:19: note: expanded from macro 'l_signalT'
131 | #define l_signalT sig_atomic_t
| ^
[4/35] Compiling CLua lundump.c
BUILD FAILURE 6.3 wasm