swift-cross-ui – Build Information

Build Information

Failed to build swift-cross-ui, reference v0.10.0 (0f3ec3), with Swift 6.4 for Wasm on 3 Oct 2026 07:31:05 UTC.

Build Command

bash -c docker run --pull=always --rm -v "checkouts-54344843-2":/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-6.4-latest swift build --swift-sdk swift-6.4.x-DEVELOPMENT-SNAPSHOT-2026-09-04-a_wasm 2>&1

Build Log

========================================
RunAll
========================================
Builder version: 5.1.1
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/moreSwift/swift-cross-ui.git
Reference: v0.10.0
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/moreSwift/swift-cross-ui
 * tag               v0.10.0    -> FETCH_HEAD
HEAD is now at 0f3ec39 Reorganize DummyBackend into a file per backend feature (#783)
Submodule path 'Sources/GtkCodeGen/GirFiles': checked out 'a9bfeaf9cfb0e7e722a2efd7c3ad865e68acd2c1'
Submodule 'Sources/GtkCodeGen/GirFiles' (https://github.com/moreSwift/gir-files) registered for path 'Sources/GtkCodeGen/GirFiles'
Cloning into '/host/spi-builder-workspace/Sources/GtkCodeGen/GirFiles'...
Cloned https://github.com/moreSwift/swift-cross-ui.git
Revision (git rev-parse @):
0f3ec3958b79cdc39a1a3e604516b71ab33a9043
SPI manifest file found: $PWD/.spi.yml
SUCCESS checkout https://github.com/moreSwift/swift-cross-ui.git at v0.10.0
========================================
Build
========================================
Selected platform:         wasm
Swift version:             6.4
Building package at path:  $PWD
https://github.com/moreSwift/swift-cross-ui.git
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-54344843-2":/host -w "$PWD" -e JAVA_HOME="/root/.sdkman/candidates/java/current" -e SPI_BUILD="1" -e SPI_PROCESSING="1" registry.gitlab.com/saguaro1/spi-images:wasm-6.4-latest swift build --swift-sdk swift-6.4.x-DEVELOPMENT-SNAPSHOT-2026-09-04-a_wasm 2>&1
wasm-6.4-latest: Pulling from saguaro1/spi-images
Digest: sha256:4328fdb43c680d205c1d6761b1e3267aa38277eefdda9ddfb17b6a0f1a77857a
Status: Image is up to date for registry.gitlab.com/saguaro1/spi-images:wasm-6.4-latest
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warning: 'spi-builder-workspace': you may be able to install gtk+-3.0 using your system-packager:
    apt-get install libgtk-3-dev clang
warning: 'spi-builder-workspace': you may be able to install gtk4 using your system-packager:
    apt-get install libgtk-4-dev clang
Building for debugging...
[Computing dependencies]
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[Starting]
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[428 / 1137] swift-cross-ui_GtkExample
[1m/host/spi-builder-workspace/.build/checkouts/zlib/zlib/gzwrite.c:78:20: [0m[0;1;31merror: [0m[1mcall to undeclared function 'write'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration][0m
   78 |             writ = write(state->fd, strm->next_in, put);[0m
      | [0;1;32m                   ^
[0m[1m/host/spi-builder-workspace/.build/checkouts/zlib/zlib/gzwrite.c:78:20: [0m[0;1;36mnote: [0mdid you mean 'fwrite'?[0m
In file included from /host/spi-builder-workspace/.build/checkouts/zlib/zlib/gzwrite.c:6:
In file included from /host/spi-builder-workspace/.build/checkouts/zlib/zlib/gzguts.h:32:
[1m/root/.swiftpm/swift-sdks/swift-6.4.x-DEVELOPMENT-SNAPSHOT-2026-09-04-a_wasm.artifactbundle/swift-6.4.x-DEVELOPMENT-SNAPSHOT-2026-09-04-a_wasm/wasm32-unknown-wasip1/WASI.sdk/include/wasm32-wasip1/stdio.h:103:8: [0m[0;1;36mnote: [0m'fwrite' declared here[0m
  103 | size_t fwrite([0;34mconst[0m [0;34mvoid[0m *[0;34m__restrict[0m, size_t, size_t, FILE *[0;34m__restrict[0m);[0m
      | [0;1;32m       ^
[0m[1m/host/spi-builder-workspace/.build/checkouts/zlib/zlib/gzwrite.c:108:24: [0m[0;1;31merror: [0m[1mcall to undeclared function 'write'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration][0m
  108 |                 writ = write(state->fd, state->x.next, put);[0m
      | [0;1;32m                       ^
[0m[1m/host/spi-builder-workspace/.build/checkouts/zlib/zlib/gzwrite.c:627:9: [0m[0;1;31merror: [0m[1mcall to undeclared function 'close'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration][0m
  627 |     [0;34mif[0m (close(state->fd) == -[0;32m1[0m)[0m
      | [0;1;32m        ^
[0m[1m/host/spi-builder-workspace/.build/checkouts/zlib/zlib/gzwrite.c:627:9: [0m[0;1;36mnote: [0mdid you mean 'fclose'?[0m
In file included from /host/spi-builder-workspace/.build/checkouts/zlib/zlib/gzwrite.c:6:
In file included from /host/spi-builder-workspace/.build/checkouts/zlib/zlib/gzguts.h:32:
[1m/root/.swiftpm/swift-sdks/swift-6.4.x-DEVELOPMENT-SNAPSHOT-2026-09-04-a_wasm.artifactbundle/swift-6.4.x-DEVELOPMENT-SNAPSHOT-2026-09-04-a_wasm/wasm32-unknown-wasip1/WASI.sdk/include/wasm32-wasip1/stdio.h:85:5: [0m[0;1;36mnote: [0m'fclose' declared here[0m
   85 | [0;34mint[0m fclose(FILE *);[0m
      | [0;1;32m    ^
[0m3 errors generated.
error: CompileC /host/spi-builder-workspace/.build/out/Intermediates.noindex/zlib.build/Debug-webassembly-wasm32/ZLibC-t.build/Objects-normal/wasm32/gzwrite.o /host/spi-builder-workspace/.build/checkouts/zlib/zlib/gzwrite.c normal wasm32 c com.apple.compilers.llvm.clang.1_0.compiler failed with a nonzero exit code. Command line:     cd /host

    Using response file: /host/spi-builder-workspace/.build/out/Intermediates.noindex/zlib.build/Debug-webassembly-wasm32/ZLibC-t.build/Objects-normal/wasm32/9f65232cb83f8421e3a495a5062eba382369c975104ee97bafc405ab795bfc5e-common-args.resp

    /usr/bin/clang -x c -target wasm32-unknown-wasip1 -fmessage-length\=0 -fdiagnostics-show-note-include-stack -fmacro-backtrace-limit\=0 -fcolor-diagnostics -Wno-trigraphs -Wno-missing-field-initializers -Wno-missing-prototypes -Wno-return-type -Wno-missing-braces -Wparentheses -Wswitch -Wno-unused-function -Wno-unused-label -Wno-unused-parameter -Wno-unused-variable -Wunused-value -Wno-empty-body -Wno-uninitialized -Wno-unknown-pragmas -w -Wno-shadow -Wno-four-char-constants -Wno-conversion -Wno-constant-conversion -Wno-int-conversion -Wno-bool-conversion -Wno-enum-conversion -Wno-float-conversion -Wno-non-literal-null-conversion -Wno-objc-literal-conversion -Wno-shorten-64-to-32 -Wpointer-sign -Wno-newline-eof -Wno-implicit-fallthrough -fstrict-aliasing -Wdeprecated-declarations -Wno-sign-conversion -Wno-infinite-recursion -Wno-comma -Wno-block-capture-autoreleasing -Wno-strict-prototypes -Wno-semicolon-before-method-body --sysroot /root/.swiftpm/swift-sdks/swift-6.4.x-DEVELOPMENT-SNAPSHOT-2026-09-04-a_wasm.artifactbundle/swift-6.4.x-DEVELOPMENT-SNAPSHOT-2026-09-04-a_wasm/wasm32-unknown-wasip1/WASI.sdk @/host/spi-builder-workspace/.build/out/Intermediates.noindex/zlib.build/Debug-webassembly-wasm32/ZLibC-t.build/Objects-normal/wasm32/9f65232cb83f8421e3a495a5062eba382369c975104ee97bafc405ab795bfc5e-common-args.resp -MMD -MT dependencies -MF /host/spi-builder-workspace/.build/out/Intermediates.noindex/zlib.build/Debug-webassembly-wasm32/ZLibC-t.build/Objects-normal/wasm32/gzwrite.d --serialize-diagnostics /host/spi-builder-workspace/.build/out/Intermediates.noindex/zlib.build/Debug-webassembly-wasm32/ZLibC-t.build/Objects-normal/wasm32/gzwrite.dia -c /host/spi-builder-workspace/.build/checkouts/zlib/zlib/gzwrite.c -o /host/spi-builder-workspace/.build/out/Intermediates.noindex/zlib.build/Debug-webassembly-wasm32/ZLibC-t.build/Objects-normal/wasm32/gzwrite.o
error: Build failed
BUILD FAILURE 6.4 wasm