Build Information
Failed to build RoyalVNCKit, reference 1.1.0 (92d442), with Swift 6.2 for Wasm on 9 Feb 2026 20:04:44 UTC.
Build Command
bash -c docker run --pull=always --rm -v "checkouts-4606859-2":/host -w "$PWD" -e JAVA_HOME="/root/.sdkman/candidates/java/current" -e SPI_BUILD="1" -e SPI_PROCESSING="1" registry.gitlab.com/finestructure/spi-images:wasm-6.2-latest swift build --swift-sdk wasm32-unknown-wasip1 2>&1Build Log
========================================
RunAll
========================================
Builder version: 4.68.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/royalapplications/royalvnc.git
Reference: 1.1.0
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/royalapplications/royalvnc
* tag 1.1.0 -> FETCH_HEAD
HEAD is now at 92d4427 Use separate zlib streams for Zlib and ZRLE encodings
Cloned https://github.com/royalapplications/royalvnc.git
Revision (git rev-parse @):
92d4427c73817d8f849bb289ff190aa4b40c44ea
SUCCESS checkout https://github.com/royalapplications/royalvnc.git at 1.1.0
========================================
Build
========================================
Selected platform: wasm
Swift version: 6.2
Building package at path: $PWD
https://github.com/royalapplications/royalvnc.git
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4606859-2":/host -w "$PWD" -e JAVA_HOME="/root/.sdkman/candidates/java/current" -e SPI_BUILD="1" -e SPI_PROCESSING="1" registry.gitlab.com/finestructure/spi-images:wasm-6.2-latest swift build --swift-sdk wasm32-unknown-wasip1 2>&1
wasm-6.2-latest: Pulling from finestructure/spi-images
Digest: sha256:c50555b47c4db0b0576f9f25702fbe2fdff28194c4a4f4c23a7dce4b3504c85e
Status: Image is up to date for registry.gitlab.com/finestructure/spi-images:wasm-6.2-latest
warning: multiple Swift SDKs match target triple `wasm32-unknown-wasip1` and host triple x86_64-unknown-linux-gnu, selected one at /root/.swiftpm/swift-sdks/swift-6.2-RELEASE_wasm.artifactbundle/swift-6.2-RELEASE_wasm/wasm32-unknown-wasip1/swift-sdk.json
Fetching https://github.com/royalapplications/CryptoSwift.git
[1/11389] Fetching cryptoswift
Fetched https://github.com/royalapplications/CryptoSwift.git from cache (1.44s)
Fetching https://github.com/tayloraswift/swift-jpeg
Fetching https://github.com/tayloraswift/swift-png
[1/3610] Fetching swift-jpeg
[110/10052] Fetching swift-jpeg, swift-png
Fetched https://github.com/tayloraswift/swift-jpeg from cache (4.11s)
[5347/6442] Fetching swift-png
Fetched https://github.com/tayloraswift/swift-png from cache (11.06s)
Computing version for https://github.com/tayloraswift/swift-jpeg
Computed https://github.com/tayloraswift/swift-jpeg at 2.0.0 (11.41s)
Computing version for https://github.com/tayloraswift/swift-png
Computed https://github.com/tayloraswift/swift-png at 4.4.9 (2.78s)
Fetching https://github.com/tayloraswift/swift-hash
[1/868] Fetching swift-hash
Fetched https://github.com/tayloraswift/swift-hash from cache (0.75s)
Computing version for https://github.com/tayloraswift/swift-hash
Computed https://github.com/tayloraswift/swift-hash at 0.7.1 (1.12s)
Creating working copy for https://github.com/tayloraswift/swift-png
Working copy of https://github.com/tayloraswift/swift-png resolved at 4.4.9
Creating working copy for https://github.com/tayloraswift/swift-jpeg
Working copy of https://github.com/tayloraswift/swift-jpeg resolved at 2.0.0
Creating working copy for https://github.com/tayloraswift/swift-hash
Working copy of https://github.com/tayloraswift/swift-hash resolved at 0.7.1
Creating working copy for https://github.com/royalapplications/CryptoSwift.git
Working copy of https://github.com/royalapplications/CryptoSwift.git resolved at foundationessentials (a59b4d9)
Building for debugging...
[0/17] Write sources
[3/17] Compiling d3des d3des.c
[4/17] Compiling RoyalVNCKitC RoyalVNCKitC.c
In file included from /host/spi-builder-workspace/Sources/Z/ZDummy.c:1:
/host/spi-builder-workspace/Sources/Z/include/ZIncludes.h:1:10: fatal error: 'zlib.h' file not found
1 | #include <zlib.h>
| ^~~~~~~~
1 error generated.
[5/17] Compiling Z ZDummy.c
[5/17] Write swift-version-24593BA9C3E375BF.txt
BUILD FAILURE 6.2 wasm