libpng – Build Information – Swift Package Index

Build Information

Failed to build libpng, reference v1.6.45 (0eff23), with Swift 6.4 for Wasm on 27 Sep 2026 23:39:17 UTC.

Build Command

bash -c docker run --pull=always --rm -v "checkouts-54344843-0":/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-6.4-latest swift build --swift-sdk swift-6.4.x-DEVELOPMENT-SNAPSHOT-2026-09-04-a_wasm 2>&1

Build Log

========================================
RunAll
========================================
Builder version: 5.1.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/the-swift-collective/libpng.git
Reference: v1.6.45
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/the-swift-collective/libpng
 * tag               v1.6.45    -> FETCH_HEAD
HEAD is now at 0eff23a Support swift 5.5 minimum.
Submodule path 'libpng': checked out '93bc3a848b533d612a121a0c31e304cd02be7465'
Submodule 'libpng' (https://github.com/the-swift-collective/LibPNGC.git) registered for path 'libpng'
Cloning into '/host/spi-builder-workspace/libpng'...
Cloned https://github.com/the-swift-collective/libpng.git
Revision (git rev-parse @):
0eff23aca92a086b7892831f5cb4f58e15be9449
SUCCESS checkout https://github.com/the-swift-collective/libpng.git at v1.6.45
========================================
Build
========================================
Selected platform:         wasm
Swift version:             6.4
Building package at path:  $PWD
https://github.com/the-swift-collective/libpng.git
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-54344843-0":/host -w "$PWD" -e JAVA_HOME="/root/.sdkman/candidates/java/current" -e SPI_BUILD="1" -e SPI_PROCESSING="1" registry.gitlab.com/saguaro1/spi-images:wasm-6.4-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
Fetching https://github.com/the-swift-collective/zlib.git
[1/71] Fetching zlib
Fetched https://github.com/the-swift-collective/zlib.git (0.53s)
Computing version for https://github.com/the-swift-collective/zlib.git
Computed https://github.com/the-swift-collective/zlib.git at 1.3.2 (0.73s)
Creating working copy for https://github.com/the-swift-collective/zlib.git
Working copy of https://github.com/the-swift-collective/zlib.git resolved at 1.3.2
Building for debugging...
[Pre-planning 1 / 215]
[1m/host/spi-builder-workspace/.build/checkouts/zlib/zlib/gzlib.c:245:9: [0m[0;1;31merror: [0m[1mcall to undeclared function 'lseek'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration][0m
  245 |         LSEEK(state->fd, [0;32m0[0m, SEEK_END);  [0;33m/* so gzoffset() is correct */[0m
      | [0;1;32m        ^
[0m[1m/host/spi-builder-workspace/.build/checkouts/zlib/zlib/gzlib.c:15:17: [0m[0;1;36mnote: [0mexpanded from macro 'LSEEK'[0m
   15 | #  define LSEEK lseek[0m
      | [0;1;32m                ^
[0m[1m/host/spi-builder-workspace/.build/checkouts/zlib/zlib/gzlib.c:245:9: [0m[0;1;36mnote: [0mdid you mean 'fseek'?[0m
[1m/host/spi-builder-workspace/.build/checkouts/zlib/zlib/gzlib.c:15:17: [0m[0;1;36mnote: [0mexpanded from macro 'LSEEK'[0m
   15 | #  define LSEEK lseek[0m
      | [0;1;32m                ^
[0mIn file included from /host/spi-builder-workspace/.build/checkouts/zlib/zlib/gzlib.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:95:5: [0m[0;1;36mnote: [0m'fseek' declared here[0m
   95 | [0;34mint[0m fseek(FILE *, [0;34mlong[0m, [0;34mint[0m);[0m
      | [0;1;32m    ^
[0m[1m/host/spi-builder-workspace/.build/checkouts/zlib/zlib/gzlib.c:251:24: [0m[0;1;31merror: [0m[1mcall to undeclared function 'lseek'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration][0m
  251 |         state->start = LSEEK(state->fd, [0;32m0[0m, SEEK_CUR);[0m
      | [0;1;32m                       ^
[0m[1m/host/spi-builder-workspace/.build/checkouts/zlib/zlib/gzlib.c:15:17: [0m[0;1;36mnote: [0mexpanded from macro 'LSEEK'[0m
   15 | #  define LSEEK lseek[0m
      | [0;1;32m                ^
[0m[1m/host/spi-builder-workspace/.build/checkouts/zlib/zlib/gzlib.c:335:9: [0m[0;1;31merror: [0m[1mcall to undeclared function 'lseek'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration][0m
  335 |     [0;34mif[0m (LSEEK(state->fd, state->start, SEEK_SET) == -[0;32m1[0m)[0m
      | [0;1;32m        ^
[0m[1m/host/spi-builder-workspace/.build/checkouts/zlib/zlib/gzlib.c:15:17: [0m[0;1;36mnote: [0mexpanded from macro 'LSEEK'[0m
   15 | #  define LSEEK lseek[0m
      | [0;1;32m                ^
[0m[1m/host/spi-builder-workspace/.build/checkouts/zlib/zlib/gzlib.c:372:15: [0m[0;1;31merror: [0m[1mcall to undeclared function 'lseek'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration][0m
  372 |         ret = LSEEK(state->fd, offset - (z_off64_t)state->x.have, SEEK_CUR);[0m
      | [0;1;32m              ^
[0m[1m/host/spi-builder-workspace/.build/checkouts/zlib/zlib/gzlib.c:15:17: [0m[0;1;36mnote: [0mexpanded from macro 'LSEEK'[0m
   15 | #  define LSEEK lseek[0m
      | [0;1;32m                ^
[0m[1m/host/spi-builder-workspace/.build/checkouts/zlib/zlib/gzlib.c:458:14: [0m[0;1;31merror: [0m[1mcall to undeclared function 'lseek'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration][0m
  458 |     offset = LSEEK(state->fd, [0;32m0[0m, SEEK_CUR);[0m
      | [0;1;32m             ^
[0m[1m/host/spi-builder-workspace/.build/checkouts/zlib/zlib/gzlib.c:15:17: [0m[0;1;36mnote: [0mexpanded from macro 'LSEEK'[0m
   15 | #  define LSEEK lseek[0m
      | [0;1;32m                ^
[0m5 errors generated.
error: CompileC /host/spi-builder-workspace/.build/out/Intermediates.noindex/zlib.build/Debug-webassembly-wasm32/ZLibC-t.build/Objects-normal/wasm32/gzlib.o /host/spi-builder-workspace/.build/checkouts/zlib/zlib/gzlib.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/gzlib.d --serialize-diagnostics /host/spi-builder-workspace/.build/out/Intermediates.noindex/zlib.build/Debug-webassembly-wasm32/ZLibC-t.build/Objects-normal/wasm32/gzlib.dia -c /host/spi-builder-workspace/.build/checkouts/zlib/zlib/gzlib.c -o /host/spi-builder-workspace/.build/out/Intermediates.noindex/zlib.build/Debug-webassembly-wasm32/ZLibC-t.build/Objects-normal/wasm32/gzlib.o
[1m/host/spi-builder-workspace/.build/checkouts/zlib/zlib/gzread.c:22:15: [0m[0;1;31merror: [0m[1mcall to undeclared function 'read'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration][0m
   22 |         ret = read(state->fd, buf + *have, get);[0m
      | [0;1;32m              ^
[0m[1m/host/spi-builder-workspace/.build/checkouts/zlib/zlib/gzread.c:22:15: [0m[0;1;36mnote: [0mdid you mean 'fread'?[0m
In file included from /host/spi-builder-workspace/.build/checkouts/zlib/zlib/gzread.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:102:8: [0m[0;1;36mnote: [0m'fread' declared here[0m
  102 | size_t fread([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/gzread.c:600:11: [0m[0;1;31merror: [0m[1mcall to undeclared function 'close'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration][0m
  600 |     ret = close(state->fd);[0m
      | [0;1;32m          ^
[0m[1m/host/spi-builder-workspace/.build/checkouts/zlib/zlib/gzread.c:600:11: [0m[0;1;36mnote: [0mdid you mean 'fclose'?[0m
In file included from /host/spi-builder-workspace/.build/checkouts/zlib/zlib/gzread.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    ^
[0m2 errors generated.
error: CompileC /host/spi-builder-workspace/.build/out/Intermediates.noindex/zlib.build/Debug-webassembly-wasm32/ZLibC-t.build/Objects-normal/wasm32/gzread.o /host/spi-builder-workspace/.build/checkouts/zlib/zlib/gzread.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/gzread.d --serialize-diagnostics /host/spi-builder-workspace/.build/out/Intermediates.noindex/zlib.build/Debug-webassembly-wasm32/ZLibC-t.build/Objects-normal/wasm32/gzread.dia -c /host/spi-builder-workspace/.build/checkouts/zlib/zlib/gzread.c -o /host/spi-builder-workspace/.build/out/Intermediates.noindex/zlib.build/Debug-webassembly-wasm32/ZLibC-t.build/Objects-normal/wasm32/gzread.o
error: Build failed
BUILD FAILURE 6.4 wasm