Swift Package Index

Build Information

Failed to build SwiftLibModbus, reference 3.1.0 (decb53), with Swift 6.3 for Wasm on 26 Sep 2026 05:45:24 UTC.

Build Command

bash -c docker run --pull=always --rm -v "checkouts-53886770-2":/host -w "$PWD" -e JAVA_HOME="/root/.sdkman/candidates/java/current" -e SPI_BUILD="1" -e SPI_PROCESSING="1" registry.gitlab.com/saguaro1/spi-images:wasm-6.3-latest swift build --swift-sdk swift-6.3.2-RELEASE_wasm 2>&1

Build Log

========================================
RunAll
========================================
Builder version: 5.1.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/jollyjinx/SwiftLibModbus.git
Reference: 3.1.0
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/jollyjinx/SwiftLibModbus
 * tag               3.1.0      -> FETCH_HEAD
HEAD is now at decb53c Add configurable Modbus response timeout
Cloned https://github.com/jollyjinx/SwiftLibModbus.git
Revision (git rev-parse @):
decb53ca200086e921c5715f31f526f96f1d3cf3
SUCCESS checkout https://github.com/jollyjinx/SwiftLibModbus.git at 3.1.0
========================================
Build
========================================
Selected platform:         wasm
Swift version:             6.3
Building package at path:  $PWD
https://github.com/jollyjinx/SwiftLibModbus.git
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-53886770-2":/host -w "$PWD" -e JAVA_HOME="/root/.sdkman/candidates/java/current" -e SPI_BUILD="1" -e SPI_PROCESSING="1" registry.gitlab.com/saguaro1/spi-images:wasm-6.3-latest swift build --swift-sdk swift-6.3.2-RELEASE_wasm 2>&1
wasm-6.3-latest: Pulling from saguaro1/spi-images
Digest: sha256:253aad7f5b11d25cf9eaef34120b94cd8a325782929c57fb304a7711494a3f9a
Status: Image is up to date for registry.gitlab.com/saguaro1/spi-images:wasm-6.3-latest
Building for debugging...
[0/7] Write sources
[1/7] Compiling CModbus strlcpy.c
[2/7] Compiling CModbus modbus-data.c
In file included from /host/spi-builder-workspace/Sources/CModbus/modbus-rtu.c:23:
/host/spi-builder-workspace/Sources/CModbus/modbus-rtu-private.h:26:10: fatal error: 'termios.h' file not found
   26 | #include <termios.h>
      |          ^~~~~~~~~~~
1 error generated.
[3/7] Compiling CModbus modbus-rtu.c
[3/7] Compiling CModbus modbus.c
In file included from /host/spi-builder-workspace/Sources/CModbus/modbus-tcp.c:28:
/root/.swiftpm/swift-sdks/swift-6.3.2-RELEASE_wasm.artifactbundle/swift-6.3.2-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, \
      |  ^
/host/spi-builder-workspace/Sources/CModbus/modbus-tcp.c:55:11: fatal error: 'netdb.h' file not found
   55 | # include <netdb.h>
      |           ^~~~~~~~~
2 errors generated.
[3/7] Compiling CModbus modbus-tcp.c
[3/7] Write swift-version-24593BA9C3E375BF.txt
BUILD FAILURE 6.3 wasm