Swift 6 - improvements

[kassane]

After #9. Tried some tests betwen targets (cross-compilation)

Sources

https://github.com/kassane/anotherBuildStep/tree/main/tests/swift_ffi

Build

native

$ ~/Downloads/zig-linux-x86_64-0.13.0/zig build --summary all --verbose
/home/kassane/Downloads/zig-linux-x86_64-0.13.0/zig build-lib -OReleaseSmall -Mroot=/home/kassane/anotherBuildStep/examples/zig_abi.zig -lc --cache-dir /home/kassane/anotherBuildStep/.zig-cache --global-cache-dir /home/kassane/.cache/zig --name zig_abi -static --listen=- 
/home/kassane/Downloads/zig-linux-x86_64-0.13.0/zig build-exe -OReleaseSafe --dep build_options -Mroot=/home/kassane/anotherBuildStep/tools/zigcc.zig -Mbuild_options=/home/kassane/anotherBuildStep/.zig-cache/c/c3a9b1f2fdf4bbdd8a1160b6f08cd482/options.zig --cache-dir /home/kassane/anotherBuildStep/.zig-cache --global-cache-dir /home/kassane/.cache/zig --name zcc --listen=- 
swiftc -import-bridging-header examples/c_include.h -g -clang-scanner-module-cache-path /home/kassane/anotherBuildStep/.zig-cache/o/dd6ab5043092597b04e52dd988141101 -module-cache-path /home/kassane/anotherBuildStep/.zig-cache/o/dd6ab5043092597b04e52dd988141101 -Xfrontend -disable-llvm-verify examples/main.swift -v -cxx-interoperability-mode=default -parse-as-library -Xcc -stdlib=libc++ -target x86_64-unknown-linux-gnu -o /home/kassane/anotherBuildStep/zig-out/bin/swift_example -ld-path=/home/kassane/anotherBuildStep/.zig-cache/o/f1f9a84666bfa391f83adf5acb58f32b/zcc -use-ld=/home/kassane/anotherBuildStep/.zig-cache/o/f1f9a84666bfa391f83adf5acb58f32b/zcc /home/kassane/anotherBuildStep/.zig-cache/o/bc3cf51116dd07753cb6e0e1bc7adfd9/libzig_abi.a 
Swift version 6.1-dev (LLVM 9d45b9c9d5c48a0, Swift 08721cf939ec503)
Target: x86_64-unknown-linux-gnu
/home/kassane/.local/share/swiftly/toolchains/main-snapshot-2024-08-21/usr/bin/swift-frontend -frontend -target x86_64-unknown-linux-gnu -disable-objc-interop -cxx-interoperability-mode=default -color-diagnostics -g -debug-info-format=dwarf -dwarf-version=4 -module-cache-path /home/kassane/anotherBuildStep/.zig-cache/o/dd6ab5043092597b04e52dd988141101 -disable-llvm-verify -empty-abi-descriptor -Xcc -working-directory -Xcc /home/kassane/anotherBuildStep -resource-dir /home/kassane/.local/share/swiftly/toolchains/main-snapshot-2024-08-21/usr/lib/swift -enable-anonymous-context-mangled-names -file-compilation-dir /home/kassane/anotherBuildStep -Xcc -stdlib=libc++ -import-objc-header /home/kassane/anotherBuildStep/examples/c_include.h -module-name swift_example -in-process-plugin-server-path /home/kassane/.local/share/swiftly/toolchains/main-snapshot-2024-08-21/usr/lib/swift/host/libSwiftInProcPluginServer.so -plugin-path /home/kassane/.local/share/swiftly/toolchains/main-snapshot-2024-08-21/usr/lib/swift/host/plugins -plugin-path /home/kassane/.local/share/swiftly/toolchains/main-snapshot-2024-08-21/usr/local/lib/swift/host/plugins -emit-pch -o /tmp/TemporaryDirectory.lQzIxg/c_include.pch /home/kassane/anotherBuildStep/examples/c_include.h
/home/kassane/.local/share/swiftly/toolchains/main-snapshot-2024-08-21/usr/bin/swift-frontend -frontend -c -primary-file /home/kassane/anotherBuildStep/examples/main.swift -target x86_64-unknown-linux-gnu -disable-objc-interop -cxx-interoperability-mode=default -color-diagnostics -g -debug-info-format=dwarf -dwarf-version=4 -module-cache-path /home/kassane/anotherBuildStep/.zig-cache/o/dd6ab5043092597b04e52dd988141101 -disable-llvm-verify -empty-abi-descriptor -Xcc -working-directory -Xcc /home/kassane/anotherBuildStep -resource-dir /home/kassane/.local/share/swiftly/toolchains/main-snapshot-2024-08-21/usr/lib/swift -enable-anonymous-context-mangled-names -file-compilation-dir /home/kassane/anotherBuildStep -Xcc -stdlib=libc++ -import-objc-header /tmp/TemporaryDirectory.lQzIxg/c_include.pch -module-name swift_example -in-process-plugin-server-path /home/kassane/.local/share/swiftly/toolchains/main-snapshot-2024-08-21/usr/lib/swift/host/libSwiftInProcPluginServer.so -plugin-path /home/kassane/.local/share/swiftly/toolchains/main-snapshot-2024-08-21/usr/lib/swift/host/plugins -plugin-path /home/kassane/.local/share/swiftly/toolchains/main-snapshot-2024-08-21/usr/local/lib/swift/host/plugins -parse-as-library -o /tmp/TemporaryDirectory.lQzIxg/main-1.o
/home/kassane/.local/share/swiftly/toolchains/main-snapshot-2024-08-21/usr/bin/swift-frontend -frontend -emit-module -experimental-skip-non-inlinable-function-bodies-without-types /home/kassane/anotherBuildStep/examples/main.swift -target x86_64-unknown-linux-gnu -disable-objc-interop -cxx-interoperability-mode=default -color-diagnostics -g -debug-info-format=dwarf -dwarf-version=4 -module-cache-path /home/kassane/anotherBuildStep/.zig-cache/o/dd6ab5043092597b04e52dd988141101 -disable-llvm-verify -empty-abi-descriptor -Xcc -working-directory -Xcc /home/kassane/anotherBuildStep -resource-dir /home/kassane/.local/share/swiftly/toolchains/main-snapshot-2024-08-21/usr/lib/swift -enable-anonymous-context-mangled-names -file-compilation-dir /home/kassane/anotherBuildStep -Xcc -stdlib=libc++ -import-objc-header /tmp/TemporaryDirectory.lQzIxg/c_include.pch -module-name swift_example -in-process-plugin-server-path /home/kassane/.local/share/swiftly/toolchains/main-snapshot-2024-08-21/usr/lib/swift/host/libSwiftInProcPluginServer.so -plugin-path /home/kassane/.local/share/swiftly/toolchains/main-snapshot-2024-08-21/usr/lib/swift/host/plugins -plugin-path /home/kassane/.local/share/swiftly/toolchains/main-snapshot-2024-08-21/usr/local/lib/swift/host/plugins -emit-module-doc-path /tmp/TemporaryDirectory.lQzIxg/swift_example-1.swiftdoc -emit-module-source-info-path /tmp/TemporaryDirectory.lQzIxg/swift_example-1.swiftsourceinfo -parse-as-library -o /tmp/TemporaryDirectory.lQzIxg/swift_example-1.swiftmodule
/home/kassane/.local/share/swiftly/toolchains/main-snapshot-2024-08-21/usr/bin/swift-frontend -modulewrap /tmp/TemporaryDirectory.lQzIxg/swift_example-1.swiftmodule -target x86_64-unknown-linux-gnu -o /tmp/TemporaryDirectory.lQzIxg/swift_example-1.o
/home/kassane/.local/share/swiftly/toolchains/main-snapshot-2024-08-21/usr/bin/swift-autolink-extract /tmp/TemporaryDirectory.lQzIxg/swift_example-1.o /tmp/TemporaryDirectory.lQzIxg/main-1.o /home/kassane/anotherBuildStep/.zig-cache/o/bc3cf51116dd07753cb6e0e1bc7adfd9/libzig_abi.a -o /tmp/TemporaryDirectory.lQzIxg/swift_example-2.autolink
/home/kassane/.local/share/swiftly/toolchains/main-snapshot-2024-08-21/usr/bin/clang -fuse-ld=/home/kassane/anotherBuildStep/.zig-cache/o/f1f9a84666bfa391f83adf5acb58f32b/zcc --ld-path=/home/kassane/anotherBuildStep/.zig-cache/o/f1f9a84666bfa391f83adf5acb58f32b/zcc -pie -Xlinker --build-id -Xlinker -rpath -Xlinker /home/kassane/.local/share/swiftly/toolchains/main-snapshot-2024-08-21/usr/lib/swift/linux /home/kassane/.local/share/swiftly/toolchains/main-snapshot-2024-08-21/usr/lib/swift/linux/x86_64/swiftrt.o /tmp/TemporaryDirectory.lQzIxg/swift_example-1.o /tmp/TemporaryDirectory.lQzIxg/main-1.o /home/kassane/anotherBuildStep/.zig-cache/o/bc3cf51116dd07753cb6e0e1bc7adfd9/libzig_abi.a @/tmp/TemporaryDirectory.lQzIxg/swift_example-2.autolink -L /home/kassane/.local/share/swiftly/toolchains/main-snapshot-2024-08-21/usr/lib/swift/linux -lswiftCore --target=x86_64-unknown-linux-gnu -v -o /home/kassane/anotherBuildStep/zig-out/bin/swift_example
[zig cc] flags: "-pie /lib64/ld-linux-x86-64.so.2 -o /home/kassane/anotherBuildStep/zig-out/bin/swift_example -L/home/kassane/.local/share/swiftly/toolchains/main-snapshot-2024-08-21/usr/lib/swift/linux -L/usr/lib64/gcc/x86_64-pc-linux-gnu/14.2.1 -L/usr/lib64/gcc/x86_64-pc-linux-gnu/14.2.1/../../../../lib64 -L/lib/../lib64 -L/usr/lib/../lib64 -L/lib -L/usr/lib -rpath /home/kassane/.local/share/swiftly/toolchains/main-snapshot-2024-08-21/usr/lib/swift/linux /home/kassane/.local/share/swiftly/toolchains/main-snapshot-2024-08-21/usr/lib/swift/linux/x86_64/swiftrt.o /tmp/TemporaryDirectory.lQzIxg/swift_example-1.o /tmp/TemporaryDirectory.lQzIxg/main-1.o /home/kassane/anotherBuildStep/.zig-cache/o/bc3cf51116dd07753cb6e0e1bc7adfd9/libzig_abi.a -lc++ -lswiftCxx -lswiftCxxStdlib -lswiftSwiftOnoneSupport -lswiftCore -lswift_Concurrency -lswift_StringProcessing -lswift_RegexParser -lswiftCore -lc -target native-native -mcpu=znver3 -lunwind "
clang version 17.0.0 (https://github.com/swiftlang/llvm-project.git 9d45b9c9d5c48a092cca2ace3743125b4e42725c)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /home/kassane/.local/share/swiftly/toolchains/main-snapshot-2024-08-21/usr/bin
Found candidate GCC installation: /usr/lib/gcc/x86_64-pc-linux-gnu/14.2.1
Found candidate GCC installation: /usr/lib64/gcc/x86_64-pc-linux-gnu/14.2.1
Selected GCC installation: /usr/lib64/gcc/x86_64-pc-linux-gnu/14.2.1
Candidate multilib: .;@m64
Candidate multilib: 32;@m32
Selected multilib: .;@m64
 "/home/kassane/anotherBuildStep/.zig-cache/o/f1f9a84666bfa391f83adf5acb58f32b/zcc" -pie --hash-style=gnu --eh-frame-hdr -m elf_x86_64 -dynamic-linker /lib64/ld-linux-x86-64.so.2 -o /home/kassane/anotherBuildStep/zig-out/bin/swift_example /usr/lib64/gcc/x86_64-pc-linux-gnu/14.2.1/../../../../lib64/Scrt1.o /usr/lib64/gcc/x86_64-pc-linux-gnu/14.2.1/../../../../lib64/crti.o /usr/lib64/gcc/x86_64-pc-linux-gnu/14.2.1/crtbeginS.o -L/home/kassane/.local/share/swiftly/toolchains/main-snapshot-2024-08-21/usr/lib/swift/linux -L/usr/lib64/gcc/x86_64-pc-linux-gnu/14.2.1 -L/usr/lib64/gcc/x86_64-pc-linux-gnu/14.2.1/../../../../lib64 -L/lib/../lib64 -L/usr/lib/../lib64 -L/lib -L/usr/lib --build-id -rpath /home/kassane/.local/share/swiftly/toolchains/main-snapshot-2024-08-21/usr/lib/swift/linux /home/kassane/.local/share/swiftly/toolchains/main-snapshot-2024-08-21/usr/lib/swift/linux/x86_64/swiftrt.o /tmp/TemporaryDirectory.lQzIxg/swift_example-1.o /tmp/TemporaryDirectory.lQzIxg/main-1.o /home/kassane/anotherBuildStep/.zig-cache/o/bc3cf51116dd07753cb6e0e1bc7adfd9/libzig_abi.a -lc++ -lswiftCxx -lswiftCxxStdlib -lswiftSwiftOnoneSupport -lswiftCore -lswift_Concurrency -lswift_StringProcessing -lswift_RegexParser -lswiftCore -lgcc --as-needed -lgcc_s --no-as-needed -lc -lgcc --as-needed -lgcc_s --no-as-needed /usr/lib64/gcc/x86_64-pc-linux-gnu/14.2.1/crtendS.o /usr/lib64/gcc/x86_64-pc-linux-gnu/14.2.1/../../../../lib64/crtn.o
Build Summary: 5/5 steps succeeded
install success
└─ swift_example success 437ms MaxRSS:163M
   ├─ zig build-exe zcc ReleaseSafe native success 7s MaxRSS:229M
   │  └─ options success
   ├─ zig build-exe zcc ReleaseSafe native (+1 more reused dependencies)
   └─ zig build-lib zig_abi ReleaseSmall native success 45ms MaxRSS:117M

cross-build

~/Downloads/zig-linux-x86_64-0.13.0/zig build --summary all --verbose -Dtarget=aarch64-linux
/home/kassane/Downloads/zig-linux-x86_64-0.13.0/zig build-lib -OReleaseSmall -target aarch64-linux -mcpu baseline -Mroot=/home/kassane/anotherBuildStep/examples/zig_abi.zig -lc --cache-dir /home/kassane/anotherBuildStep/.zig-cache --global-cache-dir /home/kassane/.cache/zig --name zig_abi -static --listen=- 
/home/kassane/Downloads/zig-linux-x86_64-0.13.0/zig build-exe -OReleaseSafe --dep build_options -Mroot=/home/kassane/anotherBuildStep/tools/zigcc.zig -Mbuild_options=/home/kassane/anotherBuildStep/.zig-cache/c/ac477cbcacdcdbe3f19ea1d29c9e0030/options.zig --cache-dir /home/kassane/anotherBuildStep/.zig-cache --global-cache-dir /home/kassane/.cache/zig --name zcc --listen=- 
swiftc -import-bridging-header examples/c_include.h -g -clang-scanner-module-cache-path /home/kassane/anotherBuildStep/.zig-cache/o/dd6ab5043092597b04e52dd988141101 -module-cache-path /home/kassane/anotherBuildStep/.zig-cache/o/dd6ab5043092597b04e52dd988141101 -Xfrontend -disable-llvm-verify examples/main.swift -v -cxx-interoperability-mode=default -parse-as-library -Xcc -stdlib=libc++ -parse-stdlib -target arm64-unknown-linux-musl -o /home/kassane/anotherBuildStep/zig-out/bin/swift_example -ld-path=/home/kassane/anotherBuildStep/.zig-cache/o/53df6cb343ca4fdf7b1eef8868271284/zcc -use-ld=/home/kassane/anotherBuildStep/.zig-cache/o/53df6cb343ca4fdf7b1eef8868271284/zcc /home/kassane/anotherBuildStep/.zig-cache/o/a3817ff4d248ac9b4c1ed32cf21e9939/libzig_abi.a 
Swift version 6.1-dev (LLVM 9d45b9c9d5c48a0, Swift 08721cf939ec503)
Target: arm64-unknown-linux-musl
/home/kassane/.local/share/swiftly/toolchains/main-snapshot-2024-08-21/usr/bin/swift-frontend -frontend -target arm64-unknown-linux-musl -Xllvm -aarch64-use-tbi -disable-objc-interop -cxx-interoperability-mode=default -color-diagnostics -g -debug-info-format=dwarf -dwarf-version=4 -module-cache-path /home/kassane/anotherBuildStep/.zig-cache/o/dd6ab5043092597b04e52dd988141101 -parse-stdlib -disable-llvm-verify -empty-abi-descriptor -Xcc -working-directory -Xcc /home/kassane/anotherBuildStep -resource-dir /home/kassane/.local/share/swiftly/toolchains/main-snapshot-2024-08-21/usr/lib/swift -enable-anonymous-context-mangled-names -file-compilation-dir /home/kassane/anotherBuildStep -Xcc -stdlib=libc++ -import-objc-header /home/kassane/anotherBuildStep/examples/c_include.h -module-name swift_example -in-process-plugin-server-path /home/kassane/.local/share/swiftly/toolchains/main-snapshot-2024-08-21/usr/lib/swift/host/libSwiftInProcPluginServer.so -plugin-path /home/kassane/.local/share/swiftly/toolchains/main-snapshot-2024-08-21/usr/lib/swift/host/plugins -plugin-path /home/kassane/.local/share/swiftly/toolchains/main-snapshot-2024-08-21/usr/local/lib/swift/host/plugins -emit-pch -o /tmp/TemporaryDirectory.51cI71/c_include.pch /home/kassane/anotherBuildStep/examples/c_include.h
/home/kassane/.local/share/swiftly/toolchains/main-snapshot-2024-08-21/usr/bin/swift-frontend -frontend -c -primary-file /home/kassane/anotherBuildStep/examples/main.swift -disable-objc-attr-requires-foundation-module -target arm64-unknown-linux-musl -Xllvm -aarch64-use-tbi -disable-objc-interop -cxx-interoperability-mode=default -color-diagnostics -g -debug-info-format=dwarf -dwarf-version=4 -module-cache-path /home/kassane/anotherBuildStep/.zig-cache/o/dd6ab5043092597b04e52dd988141101 -parse-stdlib -disable-llvm-verify -empty-abi-descriptor -Xcc -working-directory -Xcc /home/kassane/anotherBuildStep -resource-dir /home/kassane/.local/share/swiftly/toolchains/main-snapshot-2024-08-21/usr/lib/swift -enable-anonymous-context-mangled-names -file-compilation-dir /home/kassane/anotherBuildStep -Xcc -stdlib=libc++ -import-objc-header /tmp/TemporaryDirectory.51cI71/c_include.pch -module-name swift_example -in-process-plugin-server-path /home/kassane/.local/share/swiftly/toolchains/main-snapshot-2024-08-21/usr/lib/swift/host/libSwiftInProcPluginServer.so -plugin-path /home/kassane/.local/share/swiftly/toolchains/main-snapshot-2024-08-21/usr/lib/swift/host/plugins -plugin-path /home/kassane/.local/share/swiftly/toolchains/main-snapshot-2024-08-21/usr/local/lib/swift/host/plugins -parse-as-library -o /tmp/TemporaryDirectory.51cI71/main-1.o
error: compile command failed due to signal 6 (use -v to see invocation)
swift-frontend: /home/build-user/swift/lib/ClangImporter/ImportType.cpp:1613: swift::ImportedType adjustTypeForConcreteImport(ClangImporter::Implementation &, (anonymous namespace)::ImportResult, swift::ImportTypeKind, bool, swift::Bridgeability, llvm::function_ref<void (Diagnostic &&)>, swift::ImportTypeAttrs, swift::OptionalTypeKind, bool, clang::Qualifiers::ObjCLifetime): Assertion `importedType' failed.
Please submit a bug report (https://swift.org/contributing/#reporting-bugs) and include the crash backtrace.
Stack dump:
0.      Program arguments: /home/kassane/.local/share/swiftly/toolchains/main-snapshot-2024-08-21/usr/bin/swift-frontend -frontend -c -primary-file /home/kassane/anotherBuildStep/examples/main.swift -disable-objc-attr-requires-foundation-module -target arm64-unknown-linux-musl -Xllvm -aarch64-use-tbi -disable-objc-interop -cxx-interoperability-mode=default -color-diagnostics -g -debug-info-format=dwarf -dwarf-version=4 -module-cache-path /home/kassane/anotherBuildStep/.zig-cache/o/dd6ab5043092597b04e52dd988141101 -parse-stdlib -disable-llvm-verify -empty-abi-descriptor -Xcc -working-directory -Xcc /home/kassane/anotherBuildStep -resource-dir /home/kassane/.local/share/swiftly/toolchains/main-snapshot-2024-08-21/usr/lib/swift -enable-anonymous-context-mangled-names -file-compilation-dir /home/kassane/anotherBuildStep -Xcc -stdlib=libc++ -import-objc-header /tmp/TemporaryDirectory.51cI71/c_include.pch -module-name swift_example -in-process-plugin-server-path /home/kassane/.local/share/swiftly/toolchains/main-snapshot-2024-08-21/usr/lib/swift/host/libSwiftInProcPluginServer.so -plugin-path /home/kassane/.local/share/swiftly/toolchains/main-snapshot-2024-08-21/usr/lib/swift/host/plugins -plugin-path /home/kassane/.local/share/swiftly/toolchains/main-snapshot-2024-08-21/usr/local/lib/swift/host/plugins -parse-as-library -o /tmp/TemporaryDirectory.51cI71/main-1.o
1.      Swift version 6.1-dev (LLVM 9d45b9c9d5c48a0, Swift 08721cf939ec503)
2.      Compiling with effective version 5.10
3.      While evaluating request TypeCheckSourceFileRequest(source_file "/home/kassane/anotherBuildStep/examples/main.swift")
4.      While evaluating request TypeCheckFunctionBodyRequest(swift_example.(file).HelloWorld.main()@/home/kassane/anotherBuildStep/examples/main.swift:5:17)
5.      While type-checking statement at [/home/kassane/anotherBuildStep/examples/main.swift:5:24 - line:10:5] RangeText="{
        let message = "Hello, World!"
        message.withCString { cString in
            println(cString)
        }
    "
6.      While type-checking expression at [/home/kassane/anotherBuildStep/examples/main.swift:7:9 - line:9:9] RangeText="message.withCString { cString in
            println(cString)
        "
7.      While type-checking-target starting at /home/kassane/anotherBuildStep/examples/main.swift:7:17
8.      While evaluating request UnqualifiedLookupRequest(looking up 'println' from 0x567994a87588 AbstractClosureExpr line=7 : <null> with options { AllowProtocolMembers, IncludeOuterResults })
9.      While evaluating request LookupInModuleRequest(0x567994a86858 FileUnit file="/home/kassane/anotherBuildStep/examples/main.swift", 'println', UnqualifiedLookup, Overloadable, 0x567994a86858 FileUnit file="/home/kassane/anotherBuildStep/examples/main.swift", { NL_RemoveNonVisible, NL_RemoveOverridden })
10.     /home/kassane/anotherBuildStep/examples/c_include.h:7:6: importing 'println'
Stack dump without symbol names (ensure you have llvm-symbolizer in your PATH or set the environment var `LLVM_SYMBOLIZER_PATH` to point to it):
0  swift-frontend 0x00005679818bd837
1  swift-frontend 0x00005679818bb53e
2  swift-frontend 0x00005679818bdeaf
3  libc.so.6      0x00007778c244c1d0
4  libc.so.6      0x00007778c24a53f4
5  libc.so.6      0x00007778c244c120 gsignal + 32
6  libc.so.6      0x00007778c24334c3 abort + 223
7  libc.so.6      0x00007778c24333df
8  libc.so.6      0x00007778c2444177
9  swift-frontend 0x000056797c46efc4
10 swift-frontend 0x000056797c47083c
11 swift-frontend 0x000056797c470ddd
12 swift-frontend 0x000056797c4498a9
13 swift-frontend 0x000056797c444114
14 swift-frontend 0x000056797c424464
15 swift-frontend 0x000056797c425876
16 swift-frontend 0x000056797c3b1ddf
17 swift-frontend 0x000056797c3b157b
18 swift-frontend 0x000056797c82369e
19 swift-frontend 0x000056797c865f37
20 swift-frontend 0x000056797c865b2a
21 swift-frontend 0x000056797c898145
22 swift-frontend 0x000056797c86736c
23 swift-frontend 0x000056797c866665
24 swift-frontend 0x000056797c866581
25 swift-frontend 0x000056797c99d5a6
26 swift-frontend 0x000056797c8982ce
27 swift-frontend 0x000056797bef6de7
28 swift-frontend 0x000056797bef6c99
29 swift-frontend 0x000056797c27d637
30 swift-frontend 0x000056797c0ef996
31 swift-frontend 0x000056797c0f4ca3
32 swift-frontend 0x000056797c64d24c
33 swift-frontend 0x000056797c64f55e
34 swift-frontend 0x000056797c64d37e
35 swift-frontend 0x000056797c64fac8
36 swift-frontend 0x000056797c64f7c4
37 swift-frontend 0x000056797c64f9f1
38 swift-frontend 0x000056797c64f7c4
39 swift-frontend 0x000056797c64e802
40 swift-frontend 0x000056797c64d63b
41 swift-frontend 0x000056797c652b73
42 swift-frontend 0x000056797c652a14
43 swift-frontend 0x000056797c64f5b9
44 swift-frontend 0x000056797c64d37e
45 swift-frontend 0x000056797c64d223
46 swift-frontend 0x000056797c0ff72e
47 swift-frontend 0x000056797c0f3b32
48 swift-frontend 0x000056797c1ac383
49 swift-frontend 0x000056797c1ac2bd
50 swift-frontend 0x000056797c1ac198
51 swift-frontend 0x000056797c32506b
52 swift-frontend 0x000056797c32978c
53 swift-frontend 0x000056797c32773c
54 swift-frontend 0x000056797c326b93
55 swift-frontend 0x000056797c326725
56 swift-frontend 0x000056797c76e3e3
57 swift-frontend 0x000056797c6cda59
58 swift-frontend 0x000056797c8350fb
59 swift-frontend 0x000056797c3737a1
60 swift-frontend 0x000056797c375e87
61 swift-frontend 0x000056797c373675
62 swift-frontend 0x000056797ae54e69
63 swift-frontend 0x000056797ae4bfca
64 swift-frontend 0x000056797ae4bf67
65 swift-frontend 0x000056797ab0f19e
66 swift-frontend 0x000056797ab011f1
67 swift-frontend 0x000056797aafff02
68 swift-frontend 0x000056797a8ef954
69 libc.so.6      0x00007778c2434e08
70 libc.so.6      0x00007778c2434ecc __libc_start_main + 140
71 swift-frontend 0x000056797a8ee9ee
install
└─ swift_example failure
error: the following command exited with error code 1:
swiftc -import-bridging-header examples/c_include.h -g -clang-scanner-module-cache-path /home/kassane/anotherBuildStep/.zig-cache/o/dd6ab5043092597b04e52dd988141101 -module-cache-path /home/kassane/anotherBuildStep/.zig-cache/o/dd6ab5043092597b04e52dd988141101 -Xfrontend -disable-llvm-verify examples/main.swift -v -cxx-interoperability-mode=default -parse-as-library -Xcc -stdlib=libc++ -parse-stdlib -target arm64-unknown-linux-musl -o /home/kassane/anotherBuildStep/zig-out/bin/swift_example -ld-path=/home/kassane/anotherBuildStep/.zig-cache/o/53df6cb343ca4fdf7b1eef8868271284/zcc -use-ld=/home/kassane/anotherBuildStep/.zig-cache/o/53df6cb343ca4fdf7b1eef8868271284/zcc /home/kassane/anotherBuildStep/.zig-cache/o/a3817ff4d248ac9b4c1ed32cf21e9939/libzig_abi.a 
Build Summary: 3/5 steps succeeded; 1 failed
install transitive failure
└─ swift_example failure
   ├─ zig build-exe zcc ReleaseSafe native success 7s MaxRSS:230M
   │  └─ options success
   ├─ zig build-exe zcc ReleaseSafe native (+1 more reused dependencies)
   └─ zig build-lib zig_abi ReleaseSmall aarch64-linux success 37ms MaxRSS:118M
error: the following build command failed with exit code 1:
/home/kassane/anotherBuildStep/.zig-cache/o/8099e5e2c4326baf1914863c67517b45/build /home/kassane/Downloads/zig-linux-x86_64-0.13.0/zig /home/kassane/anotherBuildStep /home/kassane/anotherBuildStep/.zig-cache /home/kassane/.cache/zig --seed 0xc03f32f8 -Z43868b7f0fa84f13 --summary all --verbose -Dtarget=aarch64-linux

[kassane]

For musl support - need SDK

• [SR-4632] Swift on Alpine Linux (support musl libc) swiftlang/swift#47209
• Automatically list and install SDKs from swift.org swiftlang/swift-package-manager#7737
  • Linux Static SDK and main-snapshot (in)compatibility?

---

C++ FFI

• 🍒 [cxx-interop] Disable c++ execution header with libstdcxx versions >= 11 swiftlang/swift#75971
• Interop: Compiling with C++17 or higher on Ubuntu 22.04 fails with cyclic header dependencies in libstdc++ swiftlang/swift#75661
• [cxx-interop] Support compiling using a custom C++ stdlib swiftlang/swift#72843

---

Compiler

• Combination of -g and -O flags with Embedded Swift crashes swiftc in IRGen swiftlang/swift#72118
• -emit-supported-features driver option is not handled swiftlang/swift#74910

---

Other References

• Swift external packages (SwiftPM) support is missing mesonbuild/meson#13347

[kassane]

New tests swiftc + zig (none SDK), like D lang -betterC mode.

Source

func swiftMain()
{
    print("Hello from Swift")
}

@_cdecl("main")
public func main(_ argc: Int32, _ argv: UnsafeMutablePointer<UnsafeMutablePointer<Int8>?>) -> Int32
{
    swiftMain()
    return 0
}

$ swiftc --version
Swift version 6.1-dev (LLVM fe0f467028c23cf, Swift 406b8bd8921b5dc)
Target: x86_64-unknown-linux-gnu

$ swiftc examples/main.swift -parse-as-library -enable-experimental-feature Embedded -wmo -Xfrontend -function-sections -Xfrontend -disable-stack-protector -import-bridging-header $PWD/examples/bridging.h -Xcc --target=aarch64-linux -c
<unknown>:0: warning: argument unused during compilation: '-mcx16'
<unknown>:0: warning: argument unused during compilation: '-mcx16'
$ file main.o 
main.o: ELF 64-bit LSB relocatable, ARM aarch64, version 1 (GNU/Linux), not stripped
# note: zig cross-compile use musl-libc by default [linux-target only]
$ zig cc main.o -o swift_main -target aarch64-linux
$ ./swift_main
Hello from Swift
$ ldd swift_main
   not a dynamic executable

Similar to flang, dropping some swiftc ldflags in zcc-wrapper can solve cross-minimal support (without stdlib).