Swift Package IndexBuild Information
Failed to build Cairo, reference 1.3.2 (af9fa9), with Swift 6.1 for Wasm on 18 Jul 2026 16:39:45 UTC.
Build Command
bash -c docker run --pull=always --rm -v "checkouts-54344844-0":/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-6.1-latest swift build --swift-sdk wasm32-unknown-wasi 2>&1Build Log
========================================
RunAll
========================================
Builder version: 333316120c8b89ed7d21f1b34865290794301d91
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/pureswift/cairo.git
Reference: 1.3.2
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/pureswift/cairo
* tag 1.3.2 -> FETCH_HEAD
HEAD is now at af9fa9d Merge pull request #9 from PureSwift/fix/freetype-pkgconfig
Cloned https://github.com/pureswift/cairo.git
Revision (git rev-parse @):
af9fa9d203b0598d9a4697a05ba868bf87424d32
SUCCESS checkout https://github.com/pureswift/cairo.git at 1.3.2
========================================
Build
========================================
Selected platform: wasm
Swift version: 6.1
Building package at path: $PWD
https://github.com/pureswift/cairo.git
https://github.com/pureswift/cairo.git
WARNING: environment variable SUPPRESS_SWIFT_6_FLAGS is not set
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-54344844-0":/host -w "$PWD" -e JAVA_HOME="/root/.sdkman/candidates/java/current" -e SPI_BUILD="1" -e SPI_PROCESSING="1" registry.gitlab.com/saguaro1/spi-images:wasm-6.1-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 saguaro1/spi-images
Digest: sha256:1ad245dad3d2ae0004e1afbc92334bd39884ed9ca587cf04d0a8d5f640fb02e9
Status: Image is up to date for registry.gitlab.com/saguaro1/spi-images:wasm-6.1-latest
Fetching https://github.com/PureSwift/FontConfig.git
[1/123] Fetching fontconfig
Fetched https://github.com/PureSwift/FontConfig.git from cache (0.35s)
Creating working copy for https://github.com/PureSwift/FontConfig.git
Working copy of https://github.com/PureSwift/FontConfig.git resolved at master (02b7b62)
warning: you may be able to install cairo using your system-packager:
apt-get install libcairo2-dev
warning: you may be able to install freetype2 using your system-packager:
apt-get install libfreetype6-dev
warning: you may be able to install fontconfig using your system-packager:
apt-get install libfontconfig-dev
warning: you may be able to install cairo using your system-packager:
apt-get install libcairo2-dev
warning: you may be able to install freetype2 using your system-packager:
apt-get install libfreetype6-dev
warning: you may be able to install fontconfig using your system-packager:
apt-get install libfontconfig-dev
Building for debugging...
[0/3] Write sources
[2/3] Write swift-version-24593BA9C3E375BF.txt
error: emit-module command failed with exit code 1 (use -v to see invocation)
[4/9] Emitting module FontConfig
<unknown>:0: warning: upcoming feature 'InferSendableFromCaptures' is already enabled as of Swift version 6
<unknown>:0: warning: upcoming feature 'GlobalActorIsolatedTypesUsability' is already enabled as of Swift version 6
<unknown>:0: warning: upcoming feature 'DisableOutwardActorInference' is already enabled as of Swift version 6
<module-includes>:1:10: note: in file included from <module-includes>:1:
1 | #include "shim.h"
| `- note: in file included from <module-includes>:1:
2 |
/host/spi-builder-workspace/.build/checkouts/FontConfig/Sources/CFontConfig/shim.h:1:10: error: 'fontconfig/fontconfig.h' file not found
1 | #include <fontconfig/fontconfig.h>
| `- error: 'fontconfig/fontconfig.h' file not found
2 | #include <fontconfig/fcfreetype.h>
3 |
/host/spi-builder-workspace/.build/checkouts/FontConfig/Sources/FontConfig/FontConfig.swift:8:8: error: could not build C module 'CFontConfig'
6 | //
7 |
8 | import CFontConfig
| `- error: could not build C module 'CFontConfig'
9 |
10 | public final class FontConfiguration {
[5/9] Compiling FontConfig FontConfig.swift
<unknown>:0: warning: upcoming feature 'InferSendableFromCaptures' is already enabled as of Swift version 6
<unknown>:0: warning: upcoming feature 'GlobalActorIsolatedTypesUsability' is already enabled as of Swift version 6
<unknown>:0: warning: upcoming feature 'DisableOutwardActorInference' is already enabled as of Swift version 6
<module-includes>:1:10: note: in file included from <module-includes>:1:
1 | #include "shim.h"
| `- note: in file included from <module-includes>:1:
2 |
/host/spi-builder-workspace/.build/checkouts/FontConfig/Sources/CFontConfig/shim.h:1:10: error: 'fontconfig/fontconfig.h' file not found
1 | #include <fontconfig/fontconfig.h>
| `- error: 'fontconfig/fontconfig.h' file not found
2 | #include <fontconfig/fcfreetype.h>
3 |
/host/spi-builder-workspace/.build/checkouts/FontConfig/Sources/FontConfig/FontConfig.swift:8:8: error: could not build C module 'CFontConfig'
6 | //
7 |
8 | import CFontConfig
| `- error: could not build C module 'CFontConfig'
9 |
10 | public final class FontConfiguration {
[6/9] Compiling FontConfig FontWeight.swift
<unknown>:0: warning: upcoming feature 'InferSendableFromCaptures' is already enabled as of Swift version 6
<unknown>:0: warning: upcoming feature 'GlobalActorIsolatedTypesUsability' is already enabled as of Swift version 6
<unknown>:0: warning: upcoming feature 'DisableOutwardActorInference' is already enabled as of Swift version 6
<module-includes>:1:10: note: in file included from <module-includes>:1:
1 | #include "shim.h"
| `- note: in file included from <module-includes>:1:
2 |
/host/spi-builder-workspace/.build/checkouts/FontConfig/Sources/CFontConfig/shim.h:1:10: error: 'fontconfig/fontconfig.h' file not found
1 | #include <fontconfig/fontconfig.h>
| `- error: 'fontconfig/fontconfig.h' file not found
2 | #include <fontconfig/fcfreetype.h>
3 |
/host/spi-builder-workspace/.build/checkouts/FontConfig/Sources/FontConfig/FontConfig.swift:8:8: error: could not build C module 'CFontConfig'
6 | //
7 |
8 | import CFontConfig
| `- error: could not build C module 'CFontConfig'
9 |
10 | public final class FontConfiguration {
[7/9] Compiling FontConfig Pattern.swift
<unknown>:0: warning: upcoming feature 'InferSendableFromCaptures' is already enabled as of Swift version 6
<unknown>:0: warning: upcoming feature 'GlobalActorIsolatedTypesUsability' is already enabled as of Swift version 6
<unknown>:0: warning: upcoming feature 'DisableOutwardActorInference' is already enabled as of Swift version 6
<module-includes>:1:10: note: in file included from <module-includes>:1:
1 | #include "shim.h"
| `- note: in file included from <module-includes>:1:
2 |
/host/spi-builder-workspace/.build/checkouts/FontConfig/Sources/CFontConfig/shim.h:1:10: error: 'fontconfig/fontconfig.h' file not found
1 | #include <fontconfig/fontconfig.h>
| `- error: 'fontconfig/fontconfig.h' file not found
2 | #include <fontconfig/fcfreetype.h>
3 |
/host/spi-builder-workspace/.build/checkouts/FontConfig/Sources/FontConfig/FontConfig.swift:8:8: error: could not build C module 'CFontConfig'
6 | //
7 |
8 | import CFontConfig
| `- error: could not build C module 'CFontConfig'
9 |
10 | public final class FontConfiguration {
[8/9] Compiling FontConfig FontWidth.swift
<unknown>:0: warning: upcoming feature 'InferSendableFromCaptures' is already enabled as of Swift version 6
<unknown>:0: warning: upcoming feature 'GlobalActorIsolatedTypesUsability' is already enabled as of Swift version 6
<unknown>:0: warning: upcoming feature 'DisableOutwardActorInference' is already enabled as of Swift version 6
<module-includes>:1:10: note: in file included from <module-includes>:1:
1 | #include "shim.h"
| `- note: in file included from <module-includes>:1:
2 |
/host/spi-builder-workspace/.build/checkouts/FontConfig/Sources/CFontConfig/shim.h:1:10: error: 'fontconfig/fontconfig.h' file not found
1 | #include <fontconfig/fontconfig.h>
| `- error: 'fontconfig/fontconfig.h' file not found
2 | #include <fontconfig/fcfreetype.h>
3 |
/host/spi-builder-workspace/.build/checkouts/FontConfig/Sources/FontConfig/FontConfig.swift:8:8: error: could not build C module 'CFontConfig'
6 | //
7 |
8 | import CFontConfig
| `- error: could not build C module 'CFontConfig'
9 |
10 | public final class FontConfiguration {
[9/9] Compiling FontConfig FontSlant.swift
<unknown>:0: warning: upcoming feature 'InferSendableFromCaptures' is already enabled as of Swift version 6
<unknown>:0: warning: upcoming feature 'GlobalActorIsolatedTypesUsability' is already enabled as of Swift version 6
<unknown>:0: warning: upcoming feature 'DisableOutwardActorInference' is already enabled as of Swift version 6
<module-includes>:1:10: note: in file included from <module-includes>:1:
1 | #include "shim.h"
| `- note: in file included from <module-includes>:1:
2 |
/host/spi-builder-workspace/.build/checkouts/FontConfig/Sources/CFontConfig/shim.h:1:10: error: 'fontconfig/fontconfig.h' file not found
1 | #include <fontconfig/fontconfig.h>
| `- error: 'fontconfig/fontconfig.h' file not found
2 | #include <fontconfig/fcfreetype.h>
3 |
/host/spi-builder-workspace/.build/checkouts/FontConfig/Sources/FontConfig/FontConfig.swift:8:8: error: could not build C module 'CFontConfig'
6 | //
7 |
8 | import CFontConfig
| `- error: could not build C module 'CFontConfig'
9 |
10 | public final class FontConfiguration {
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-54344844-0":/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-6.1-latest swift build --swift-sdk wasm32-unknown-wasi 2>&1
wasm-6.1-latest: Pulling from saguaro1/spi-images
Digest: sha256:1ad245dad3d2ae0004e1afbc92334bd39884ed9ca587cf04d0a8d5f640fb02e9
Status: Image is up to date for registry.gitlab.com/saguaro1/spi-images:wasm-6.1-latest
warning: you may be able to install cairo using your system-packager:
apt-get install libcairo2-dev
warning: you may be able to install freetype2 using your system-packager:
apt-get install libfreetype6-dev
warning: you may be able to install fontconfig using your system-packager:
apt-get install libfontconfig-dev
warning: you may be able to install cairo using your system-packager:
apt-get install libcairo2-dev
warning: you may be able to install freetype2 using your system-packager:
apt-get install libfreetype6-dev
warning: you may be able to install fontconfig using your system-packager:
apt-get install libfontconfig-dev
[0/1] Planning build
Building for debugging...
[0/1] Write swift-version-24593BA9C3E375BF.txt
[2/7] Compiling FontConfig Pattern.swift
<module-includes>:1:10: note: in file included from <module-includes>:1:
1 | #include "shim.h"
| `- note: in file included from <module-includes>:1:
2 |
/host/spi-builder-workspace/.build/checkouts/FontConfig/Sources/CFontConfig/shim.h:1:10: error: 'fontconfig/fontconfig.h' file not found
1 | #include <fontconfig/fontconfig.h>
| `- error: 'fontconfig/fontconfig.h' file not found
2 | #include <fontconfig/fcfreetype.h>
3 |
/host/spi-builder-workspace/.build/checkouts/FontConfig/Sources/FontConfig/FontConfig.swift:8:8: error: could not build C module 'CFontConfig'
6 | //
7 |
8 | import CFontConfig
| `- error: could not build C module 'CFontConfig'
9 |
10 | public final class FontConfiguration {
[3/7] Compiling FontConfig FontWidth.swift
<module-includes>:1:10: note: in file included from <module-includes>:1:
1 | #include "shim.h"
| `- note: in file included from <module-includes>:1:
2 |
/host/spi-builder-workspace/.build/checkouts/FontConfig/Sources/CFontConfig/shim.h:1:10: error: 'fontconfig/fontconfig.h' file not found
1 | #include <fontconfig/fontconfig.h>
| `- error: 'fontconfig/fontconfig.h' file not found
2 | #include <fontconfig/fcfreetype.h>
3 |
/host/spi-builder-workspace/.build/checkouts/FontConfig/Sources/FontConfig/FontConfig.swift:8:8: error: could not build C module 'CFontConfig'
6 | //
7 |
8 | import CFontConfig
| `- error: could not build C module 'CFontConfig'
9 |
10 | public final class FontConfiguration {
[4/7] Compiling FontConfig FontWeight.swift
<module-includes>:1:10: note: in file included from <module-includes>:1:
1 | #include "shim.h"
| `- note: in file included from <module-includes>:1:
2 |
/host/spi-builder-workspace/.build/checkouts/FontConfig/Sources/CFontConfig/shim.h:1:10: error: 'fontconfig/fontconfig.h' file not found
1 | #include <fontconfig/fontconfig.h>
| `- error: 'fontconfig/fontconfig.h' file not found
2 | #include <fontconfig/fcfreetype.h>
3 |
/host/spi-builder-workspace/.build/checkouts/FontConfig/Sources/FontConfig/FontConfig.swift:8:8: error: could not build C module 'CFontConfig'
6 | //
7 |
8 | import CFontConfig
| `- error: could not build C module 'CFontConfig'
9 |
10 | public final class FontConfiguration {
error: emit-module command failed with exit code 1 (use -v to see invocation)
[5/7] Emitting module FontConfig
<module-includes>:1:10: note: in file included from <module-includes>:1:
1 | #include "shim.h"
| `- note: in file included from <module-includes>:1:
2 |
/host/spi-builder-workspace/.build/checkouts/FontConfig/Sources/CFontConfig/shim.h:1:10: error: 'fontconfig/fontconfig.h' file not found
1 | #include <fontconfig/fontconfig.h>
| `- error: 'fontconfig/fontconfig.h' file not found
2 | #include <fontconfig/fcfreetype.h>
3 |
/host/spi-builder-workspace/.build/checkouts/FontConfig/Sources/FontConfig/FontConfig.swift:8:8: error: could not build C module 'CFontConfig'
6 | //
7 |
8 | import CFontConfig
| `- error: could not build C module 'CFontConfig'
9 |
10 | public final class FontConfiguration {
[6/7] Compiling FontConfig FontSlant.swift
<module-includes>:1:10: note: in file included from <module-includes>:1:
1 | #include "shim.h"
| `- note: in file included from <module-includes>:1:
2 |
/host/spi-builder-workspace/.build/checkouts/FontConfig/Sources/CFontConfig/shim.h:1:10: error: 'fontconfig/fontconfig.h' file not found
1 | #include <fontconfig/fontconfig.h>
| `- error: 'fontconfig/fontconfig.h' file not found
2 | #include <fontconfig/fcfreetype.h>
3 |
/host/spi-builder-workspace/.build/checkouts/FontConfig/Sources/FontConfig/FontConfig.swift:8:8: error: could not build C module 'CFontConfig'
6 | //
7 |
8 | import CFontConfig
| `- error: could not build C module 'CFontConfig'
9 |
10 | public final class FontConfiguration {
[7/7] Compiling FontConfig FontConfig.swift
<module-includes>:1:10: note: in file included from <module-includes>:1:
1 | #include "shim.h"
| `- note: in file included from <module-includes>:1:
2 |
/host/spi-builder-workspace/.build/checkouts/FontConfig/Sources/CFontConfig/shim.h:1:10: error: 'fontconfig/fontconfig.h' file not found
1 | #include <fontconfig/fontconfig.h>
| `- error: 'fontconfig/fontconfig.h' file not found
2 | #include <fontconfig/fcfreetype.h>
3 |
/host/spi-builder-workspace/.build/checkouts/FontConfig/Sources/FontConfig/FontConfig.swift:8:8: error: could not build C module 'CFontConfig'
6 | //
7 |
8 | import CFontConfig
| `- error: could not build C module 'CFontConfig'
9 |
10 | public final class FontConfiguration {
BUILD FAILURE 6.1 wasm