Failed to cross-compile source code using #Predicate macros. #27
Description
Hi!
We would like to create Linux binaries/executables on macOS using cross compilation possibilities.
Some projects works fine, but we have an issue compiling a project using the new predicate functionality from swift-foundation package.
There is a minimised test, which compiles fine on macOS and Linux, but does not compile on macOS for Linux using a cross-compile.
We created a cross-compile toolchain according to directions in the README:
mbpro~ macros-cross-compile % swift experimental-sdk list
5.9-RELEASE_ubuntu_jammy_aarch64
and when using it have the following:
mbpro~ macros-cross-compile % swift build --experimental-swift-sdk 5.9-RELEASE_ubuntu_jammy_aarch64
Building for debugging...
warning: Could not read SDKSettings.json for SDK at: /Users/user/Library/org.swift.swiftpm/swift-sdks/5.9-RELEASE_ubuntu_jammy_aarch64.artifactbundle/5.9-RELEASE_ubuntu_jammy_aarch64/aarch64-unknown-linux-gnu/ubuntu-jammy.sdk
warning: Could not read SDKSettings.json for SDK at: /Users/user/Library/org.swift.swiftpm/swift-sdks/5.9-RELEASE_ubuntu_jammy_aarch64.artifactbundle/5.9-RELEASE_ubuntu_jammy_aarch64/aarch64-unknown-linux-gnu/ubuntu-jammy.sdk
<unknown>:0: warning: glibc not found for 'aarch64-unknown-linux-gnu'; C stdlib may be unavailable
.....
Macros: Operation not permitted
<unknown>:0: warning: glibc not found for 'aarch64-unknown-linux-gnu'; C stdlib may be unavailable
<unknown>:0: warning: glibc not found for 'aarch64-unknown-linux-gnu'; C stdlib may be unavailable
warning: Could not read SDKSettings.json for SDK at: /Users/user/Library/org.swift.swiftpm/swift-sdks/5.9-RELEASE_ubuntu_jammy_aarch64.artifactbundle/5.9-RELEASE_ubuntu_jammy_aarch64/aarch64-unknown-linux-gnu/ubuntu-jammy.sdk
error: emit-module command failed with exit code 1 (use -v to see invocation)
shell-init: error retrieving current directory: getcwd: cannot access parent directories: Operation not permitted
/Users/user/external-reproducers/swift/macros-cross-compile/.build/aarch64-unknown-linux-gnu/debug/FoundationMacros: /Users/user/external-reproducers/swift/macros-cross-compile/.build/aarch64-unknown-linux-gnu/debug/FoundationMacros: Operation not permitted
<unknown>:0: warning: compiler plugin not loaded: '/Users/user/external-reproducers/swift/macros-cross-compile/.build/aarch64-unknown-linux-gnu/debug/FoundationMacros; failed to initialize
/Users/user/external-reproducers/swift/macros-cross-compile/Sources/MacrosCrossCompile/Main.swift:8:17: error: external macro implementation type 'FoundationMacros.PredicateMacro' could not be found for macro 'Predicate'
let predicate = #Predicate<Monster> { monster in
^
/Users/user/external-reproducers/swift/macros-cross-compile/.build/checkouts/swift-foundation/Sources/FoundationEssentials/Predicate/Predicate.swift:33:14: note: 'Predicate' declared here
public macro Predicate<each Input>(_ body: (repeat each Input) -> Bool) -> Predicate<repeat each Input> = #externalMacro(module: "FoundationMacros", type: "PredicateMacro")
^
shell-init: error retrieving current directory: getcwd: cannot access parent directories: Operation not permitted
/Users/user/external-reproducers/swift/macros-cross-compile/.build/aarch64-unknown-linux-gnu/debug/FoundationMacros: /Users/user/external-reproducers/swift/macros-cross-compile/.build/aarch64-unknown-linux-gnu/debug/FoundationMacros: Operation not permitted
<unknown>:0: warning: compiler plugin not loaded: '/Users/user/external-reproducers/swift/macros-cross-compile/.build/aarch64-unknown-linux-gnu/debug/FoundationMacros; failed to initialize
/Users/user/external-reproducers/swift/macros-cross-compile/Sources/MacrosCrossCompile/Main.swift:8:17: error: external macro implementation type 'FoundationMacros.PredicateMacro' could not be found for macro 'Predicate'
let predicate = #Predicate<Monster> { monster in
^
/Users/user/external-reproducers/swift/macros-cross-compile/.build/checkouts/swift-foundation/Sources/FoundationEssentials/Predicate/Predicate.swift:33:14: note: 'Predicate' declared here
public macro Predicate<each Input>(_ body: (repeat each Input) -> Bool) -> Predicate<repeat each Input> = #externalMacro(module: "FoundationMacros", type: "PredicateMacro")
^
error: fatalError
The source code of the minimised test available in the repo
Steps to reproduce
mbpro~ git clone https://github.com/ordo-one/external-reproducers.git
Cloning into 'external-reproducers'...
remote: Enumerating objects: 231, done.
remote: Counting objects: 100% (231/231), done.
remote: Compressing objects: 100% (155/155), done.
remote: Total 231 (delta 92), reused 154 (delta 38), pack-reused 0
Receiving objects: 100% (231/231), 42.60 KiB | 1.22 MiB/s, done.
Resolving deltas: 100% (92/92), done.
mbpro~ cd external-reproducers/swift/macros-cross-compile
mbpro~ swift build --experimental-swift-sdk 5.9-RELEASE_ubuntu_jammy_aarch64