Swift Package IndexBuild Information
Failed to build ReadiumZIPFoundation, reference 3.0.1 (adb49c), with Swift 6.3 for Wasm on 17 Apr 2026 11:50:03 UTC.
Build Command
bash -c docker run --pull=always --rm -v "checkouts-4609320-2":/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
========================================
RunAll
========================================
Builder version: 4.70.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/readium/ZIPFoundation.git
Reference: 3.0.1
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/readium/ZIPFoundation
* tag 3.0.1 -> FETCH_HEAD
HEAD is now at adb49c8 3.0.1 (#15)
Cloned https://github.com/readium/ZIPFoundation.git
Revision (git rev-parse @):
adb49c8bfe060cc187370b12fa081012a6440b86
SUCCESS checkout https://github.com/readium/ZIPFoundation.git at 3.0.1
========================================
Build
========================================
Selected platform: wasm
Swift version: 6.3
Building package at path: $PWD
https://github.com/readium/ZIPFoundation.git
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4609320-2":/host -w "$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
warning: 'spi-builder-workspace': found 1 file(s) which are unhandled; explicitly declare them as resources or exclude from the target
/host/spi-builder-workspace/Sources/ZIPFoundation/Resources/PrivacyInfo.xcprivacy
Building for debugging...
[0/2] Write sources
[1/2] Write swift-version-24593BA9C3E375BF.txt
error: emit-module command failed with exit code 1 (use -v to see invocation)
[3/19] Emitting module ReadiumZIPFoundation
<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/Sources/CZLib/shim.h:15:9: error: 'zlib.h' file not found
13 |
14 | #import <stdio.h>
15 | #import <zlib.h>
| `- error: 'zlib.h' file not found
16 |
17 | // [zlib] provide 64-bit offset functions if _LARGEFILE64_SOURCE defined
/host/spi-builder-workspace/Sources/ZIPFoundation/Data+Compression.swift:166:8: error: could not build C module 'CZlib'
164 |
165 | #else
166 | import CZlib
| `- error: could not build C module 'CZlib'
167 |
168 | extension Data {
[4/21] Compiling ReadiumZIPFoundation Data+Serialization.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/Sources/CZLib/shim.h:15:9: error: 'zlib.h' file not found
13 |
14 | #import <stdio.h>
15 | #import <zlib.h>
| `- error: 'zlib.h' file not found
16 |
17 | // [zlib] provide 64-bit offset functions if _LARGEFILE64_SOURCE defined
/host/spi-builder-workspace/Sources/ZIPFoundation/Data+Compression.swift:166:8: error: could not build C module 'CZlib'
164 |
165 | #else
166 | import CZlib
| `- error: could not build C module 'CZlib'
167 |
168 | extension Data {
[5/21] Compiling ReadiumZIPFoundation DataSource.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/Sources/CZLib/shim.h:15:9: error: 'zlib.h' file not found
13 |
14 | #import <stdio.h>
15 | #import <zlib.h>
| `- error: 'zlib.h' file not found
16 |
17 | // [zlib] provide 64-bit offset functions if _LARGEFILE64_SOURCE defined
/host/spi-builder-workspace/Sources/ZIPFoundation/Data+Compression.swift:166:8: error: could not build C module 'CZlib'
164 |
165 | #else
166 | import CZlib
| `- error: could not build C module 'CZlib'
167 |
168 | extension Data {
[6/21] Compiling ReadiumZIPFoundation Archive+BackingConfiguration.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/Sources/CZLib/shim.h:15:9: error: 'zlib.h' file not found
13 |
14 | #import <stdio.h>
15 | #import <zlib.h>
| `- error: 'zlib.h' file not found
16 |
17 | // [zlib] provide 64-bit offset functions if _LARGEFILE64_SOURCE defined
/host/spi-builder-workspace/Sources/ZIPFoundation/Data+Compression.swift:166:8: error: could not build C module 'CZlib'
164 |
165 | #else
166 | import CZlib
| `- error: could not build C module 'CZlib'
167 |
168 | extension Data {
[7/21] Compiling ReadiumZIPFoundation Archive+Helpers.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/Sources/CZLib/shim.h:15:9: error: 'zlib.h' file not found
13 |
14 | #import <stdio.h>
15 | #import <zlib.h>
| `- error: 'zlib.h' file not found
16 |
17 | // [zlib] provide 64-bit offset functions if _LARGEFILE64_SOURCE defined
/host/spi-builder-workspace/Sources/ZIPFoundation/Data+Compression.swift:166:8: error: could not build C module 'CZlib'
164 |
165 | #else
166 | import CZlib
| `- error: could not build C module 'CZlib'
167 |
168 | extension Data {
[8/21] Compiling ReadiumZIPFoundation Archive+Progress.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/Sources/CZLib/shim.h:15:9: error: 'zlib.h' file not found
13 |
14 | #import <stdio.h>
15 | #import <zlib.h>
| `- error: 'zlib.h' file not found
16 |
17 | // [zlib] provide 64-bit offset functions if _LARGEFILE64_SOURCE defined
/host/spi-builder-workspace/Sources/ZIPFoundation/Data+Compression.swift:166:8: error: could not build C module 'CZlib'
164 |
165 | #else
166 | import CZlib
| `- error: could not build C module 'CZlib'
167 |
168 | extension Data {
[9/21] Compiling ReadiumZIPFoundation SharedMutableValue.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/Sources/CZLib/shim.h:15:9: error: 'zlib.h' file not found
13 |
14 | #import <stdio.h>
15 | #import <zlib.h>
| `- error: 'zlib.h' file not found
16 |
17 | // [zlib] provide 64-bit offset functions if _LARGEFILE64_SOURCE defined
/host/spi-builder-workspace/Sources/ZIPFoundation/Data+Compression.swift:166:8: error: could not build C module 'CZlib'
164 |
165 | #else
166 | import CZlib
| `- error: could not build C module 'CZlib'
167 |
168 | extension Data {
[10/21] Compiling ReadiumZIPFoundation URL+ZIP.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/Sources/CZLib/shim.h:15:9: error: 'zlib.h' file not found
13 |
14 | #import <stdio.h>
15 | #import <zlib.h>
| `- error: 'zlib.h' file not found
16 |
17 | // [zlib] provide 64-bit offset functions if _LARGEFILE64_SOURCE defined
/host/spi-builder-workspace/Sources/ZIPFoundation/Data+Compression.swift:166:8: error: could not build C module 'CZlib'
164 |
165 | #else
166 | import CZlib
| `- error: could not build C module 'CZlib'
167 |
168 | extension Data {
[11/21] Compiling ReadiumZIPFoundation FileDataSource.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/Sources/CZLib/shim.h:15:9: error: 'zlib.h' file not found
13 |
14 | #import <stdio.h>
15 | #import <zlib.h>
| `- error: 'zlib.h' file not found
16 |
17 | // [zlib] provide 64-bit offset functions if _LARGEFILE64_SOURCE defined
/host/spi-builder-workspace/Sources/ZIPFoundation/Data+Compression.swift:166:8: error: could not build C module 'CZlib'
164 |
165 | #else
166 | import CZlib
| `- error: could not build C module 'CZlib'
167 |
168 | extension Data {
[12/21] Compiling ReadiumZIPFoundation FileManager+ZIP.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/Sources/CZLib/shim.h:15:9: error: 'zlib.h' file not found
13 |
14 | #import <stdio.h>
15 | #import <zlib.h>
| `- error: 'zlib.h' file not found
16 |
17 | // [zlib] provide 64-bit offset functions if _LARGEFILE64_SOURCE defined
/host/spi-builder-workspace/Sources/ZIPFoundation/Data+Compression.swift:166:8: error: could not build C module 'CZlib'
164 |
165 | #else
166 | import CZlib
| `- error: could not build C module 'CZlib'
167 |
168 | extension Data {
[13/21] Compiling ReadiumZIPFoundation Entry+ZIP64.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/Sources/CZLib/shim.h:15:9: error: 'zlib.h' file not found
13 |
14 | #import <stdio.h>
15 | #import <zlib.h>
| `- error: 'zlib.h' file not found
16 |
17 | // [zlib] provide 64-bit offset functions if _LARGEFILE64_SOURCE defined
/host/spi-builder-workspace/Sources/ZIPFoundation/Data+Compression.swift:166:8: error: could not build C module 'CZlib'
164 |
165 | #else
166 | import CZlib
| `- error: could not build C module 'CZlib'
167 |
168 | extension Data {
[14/21] Compiling ReadiumZIPFoundation Entry.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/Sources/CZLib/shim.h:15:9: error: 'zlib.h' file not found
13 |
14 | #import <stdio.h>
15 | #import <zlib.h>
| `- error: 'zlib.h' file not found
16 |
17 | // [zlib] provide 64-bit offset functions if _LARGEFILE64_SOURCE defined
/host/spi-builder-workspace/Sources/ZIPFoundation/Data+Compression.swift:166:8: error: could not build C module 'CZlib'
164 |
165 | #else
166 | import CZlib
| `- error: could not build C module 'CZlib'
167 |
168 | extension Data {
[15/21] Compiling ReadiumZIPFoundation Archive.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/Sources/CZLib/shim.h:15:9: error: 'zlib.h' file not found
13 |
14 | #import <stdio.h>
15 | #import <zlib.h>
| `- error: 'zlib.h' file not found
16 |
17 | // [zlib] provide 64-bit offset functions if _LARGEFILE64_SOURCE defined
/host/spi-builder-workspace/Sources/ZIPFoundation/Data+Compression.swift:166:8: error: could not build C module 'CZlib'
164 |
165 | #else
166 | import CZlib
| `- error: could not build C module 'CZlib'
167 |
168 | extension Data {
[16/21] Compiling ReadiumZIPFoundation Data+Compression.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/Sources/CZLib/shim.h:15:9: error: 'zlib.h' file not found
13 |
14 | #import <stdio.h>
15 | #import <zlib.h>
| `- error: 'zlib.h' file not found
16 |
17 | // [zlib] provide 64-bit offset functions if _LARGEFILE64_SOURCE defined
/host/spi-builder-workspace/Sources/ZIPFoundation/Data+Compression.swift:166:8: error: could not build C module 'CZlib'
164 |
165 | #else
166 | import CZlib
| `- error: could not build C module 'CZlib'
167 |
168 | extension Data {
[17/21] Compiling ReadiumZIPFoundation Archive+Reading.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/Sources/CZLib/shim.h:15:9: error: 'zlib.h' file not found
13 |
14 | #import <stdio.h>
15 | #import <zlib.h>
| `- error: 'zlib.h' file not found
16 |
17 | // [zlib] provide 64-bit offset functions if _LARGEFILE64_SOURCE defined
/host/spi-builder-workspace/Sources/ZIPFoundation/Data+Compression.swift:166:8: error: could not build C module 'CZlib'
164 |
165 | #else
166 | import CZlib
| `- error: could not build C module 'CZlib'
167 |
168 | extension Data {
[18/21] Compiling ReadiumZIPFoundation Archive+Writing.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/Sources/CZLib/shim.h:15:9: error: 'zlib.h' file not found
13 |
14 | #import <stdio.h>
15 | #import <zlib.h>
| `- error: 'zlib.h' file not found
16 |
17 | // [zlib] provide 64-bit offset functions if _LARGEFILE64_SOURCE defined
/host/spi-builder-workspace/Sources/ZIPFoundation/Data+Compression.swift:166:8: error: could not build C module 'CZlib'
164 |
165 | #else
166 | import CZlib
| `- error: could not build C module 'CZlib'
167 |
168 | extension Data {
[19/21] Compiling ReadiumZIPFoundation Archive+ZIP64.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/Sources/CZLib/shim.h:15:9: error: 'zlib.h' file not found
13 |
14 | #import <stdio.h>
15 | #import <zlib.h>
| `- error: 'zlib.h' file not found
16 |
17 | // [zlib] provide 64-bit offset functions if _LARGEFILE64_SOURCE defined
/host/spi-builder-workspace/Sources/ZIPFoundation/Data+Compression.swift:166:8: error: could not build C module 'CZlib'
164 |
165 | #else
166 | import CZlib
| `- error: could not build C module 'CZlib'
167 |
168 | extension Data {
[20/21] Compiling ReadiumZIPFoundation Date+ZIP.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/Sources/CZLib/shim.h:15:9: error: 'zlib.h' file not found
13 |
14 | #import <stdio.h>
15 | #import <zlib.h>
| `- error: 'zlib.h' file not found
16 |
17 | // [zlib] provide 64-bit offset functions if _LARGEFILE64_SOURCE defined
/host/spi-builder-workspace/Sources/ZIPFoundation/Data+Compression.swift:166:8: error: could not build C module 'CZlib'
164 |
165 | #else
166 | import CZlib
| `- error: could not build C module 'CZlib'
167 |
168 | extension Data {
[21/21] Compiling ReadiumZIPFoundation Entry+Serialization.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/Sources/CZLib/shim.h:15:9: error: 'zlib.h' file not found
13 |
14 | #import <stdio.h>
15 | #import <zlib.h>
| `- error: 'zlib.h' file not found
16 |
17 | // [zlib] provide 64-bit offset functions if _LARGEFILE64_SOURCE defined
/host/spi-builder-workspace/Sources/ZIPFoundation/Data+Compression.swift:166:8: error: could not build C module 'CZlib'
164 |
165 | #else
166 | import CZlib
| `- error: could not build C module 'CZlib'
167 |
168 | extension Data {
BUILD FAILURE 6.3 wasm