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Test and fix iOS #5158

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6bba24e
Mark certain items as only available on macOS
madsmtm Jun 14, 2026
365a8d0
Fix iOS, tvOS, watchOS and visionOS tests
madsmtm Jun 18, 2026
4bfdbd8
Use cargo-apple-runner for testing iOS
madsmtm Jun 9, 2026
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15 changes: 15 additions & 0 deletions .github/workflows/ci.yaml
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Original file line number Diff line number Diff line change
Expand Up @@ -240,6 +240,11 @@ jobs:
# FIXME(ppc): SIGILL running tests, see
# https://github.com/rust-lang/libc/pull/4254#issuecomment-2636288713
# - target: powerpc-unknown-linux-gnu
- target: aarch64-apple-ios-sim
os: macos-26
cargo-apple-runner: true
simulator: "iPhone 17"
env: { CARGO_TARGET_AARCH64_APPLE_IOS_SIM_RUNNER: cargo-apple-runner }
Comment on lines +243 to +247

@madsmtm madsmtm Jun 9, 2026 •
edited by rustbot
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We could add tests for tvOS, watchOS and visionOS here too, if you'd like?

View changes since the review

runs-on: ${{ matrix.os && matrix.os || 'ubuntu-26.04' }}
timeout-minutes: 25
env:
Expand All @@ -261,6 +266,16 @@ jobs:
jq -r 'to_entries | map("\(.key)=\(.value|tostring)") | .[]' >>$GITHUB_ENV
shell: bash

- name: Install `cargo-apple-runner`
if: matrix.cargo-apple-runner
uses: taiki-e/install-action@0631aa6515c7d545823c67cfae7ef4fc7f490154 # v2.81.8
with:
tool: cargo-apple-runner

@madsmtm madsmtm Jun 9, 2026 •
edited by rustbot
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Unsure if this is how you'll want this to be installed?

View changes since the review


- name: Start simulator
if: matrix.simulator
run: xcrun simctl boot "${{ matrix.simulator }}"

- name: Run natively
if: runner.os != 'Linux'
run: ./ci/run.sh ${{ matrix.target }}
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4 changes: 2 additions & 2 deletions ci/README.md
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Expand Up @@ -37,13 +37,13 @@ The remaining architectures look like:
the generated binary to actually verify the tests pass.
* The MUSL build just has to download a MUSL compiler and target libraries and
then otherwise runs tests normally.
* iOS builds need an extra linker flag currently, but beyond that they're built
as standard as everything else.
* iOS is tested using [`cargo-apple-runner`][cargo-apple-runner].
* The BSD builds, currently OpenBSD and FreeBSD, use QEMU to boot up a system
and compile/run tests. More information on that below.

[Actions config]: https://github.com/rust-lang/libc/tree/HEAD/.github/workflows
[android-docker]: https://github.com/rust-lang/libc/blob/HEAD/ci/docker/x86_64-linux-android/Dockerfile
[cargo-apple-runner]: https://github.com/madsmtm/cargo-apple-runner

## QEMU

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187 changes: 0 additions & 187 deletions ci/ios/deploy_and_run_on_ios_simulator.rs
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3 changes: 3 additions & 0 deletions ci/run.sh
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Expand Up @@ -26,6 +26,9 @@ case "$target" in
# FIXME(android): unit tests fail to start on Android
*android*) cmd="$cmd --manifest-path libc-test/Cargo.toml" ;;
*s390x*) cmd="$cmd --manifest-path libc-test/Cargo.toml" ;;
# ctest's own tests don't work on Apple devices, since these don't have
# host tooling such as `rustc` or a C compiler.
*ios*|*tvos*|*watchos*|*visionos*) cmd="$cmd --workspace --exclude ctest" ;;
# For all other platforms, test everything in the workspace
*) cmd="$cmd --workspace" ;;
esac
Expand Down
57 changes: 41 additions & 16 deletions libc-test/build.rs
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Expand Up @@ -209,6 +209,9 @@ fn test_apple(target: &str) {
assert!(target.contains("apple"));
let x86_64 = target.contains("x86_64");
let i686 = target.contains("i686");
let macos = target.contains("darwin") || target.contains("macos");
let tvos = target.contains("tvos");
let watchos = target.contains("watchos");

let mut cfg = ctest_cfg();

Expand Down Expand Up @@ -236,27 +239,29 @@ fn test_apple(target: &str) {
"ifaddrs.h",
"langinfo.h",
"libgen.h",
"libproc.h",
(macos, "libproc.h"),
"limits.h",
"locale.h",
"mach/mach.h",
"malloc/malloc.h",
"net/bpf.h",
"net/dlil.h",
(macos, "net/bpf.h"),
(macos, "net/dlil.h"),
"net/if.h",
"net/if_arp.h",
(macos, "net/if_arp.h"),
"net/if_dl.h",
"net/if_mib.h",
"net/if_utun.h",
(macos, "net/if_mib.h"),
(macos, "net/if_utun.h"),
"net/if_var.h",
"net/ndrv.h",
"net/route.h",
(macos, "net/ndrv.h"),
(macos, "net/route.h"),
"netdb.h",
"netinet/if_ether.h",
(macos, "netinet/if_ether.h"),
"netinet/in.h",
"netinet/ip.h",
"netinet/tcp.h",
"netinet/udp.h",
"netinet6/in6_var.h",
"netinet6/scope6_var.h",
(macos, "netinet6/in6_var.h"),
"os/clock.h",
"os/lock.h",
"os/signpost.h",
Expand Down Expand Up @@ -287,20 +292,20 @@ fn test_apple(target: &str) {
"sys/file.h",
"sys/ioctl.h",
"sys/ipc.h",
"sys/kern_control.h",
(macos, "sys/kern_control.h"),
"sys/mman.h",
"sys/mount.h",
"sys/proc_info.h",
"sys/ptrace.h",
(macos, "sys/proc_info.h"),
(macos, "sys/ptrace.h"),
"sys/quota.h",
"sys/random.h",
(macos, "sys/random.h"),
"sys/resource.h",
"sys/sem.h",
"sys/shm.h",
"sys/socket.h",
"sys/stat.h",
"sys/statvfs.h",
"sys/sys_domain.h",
(macos, "sys/sys_domain.h"),
"sys/sysctl.h",
"sys/time.h",
"sys/times.h",
Expand All @@ -321,7 +326,7 @@ fn test_apple(target: &str) {
"utmpx.h",
"wchar.h",
"xlocale.h",
(x86_64, "crt_externs.h"),
"crt_externs.h",
);

cfg.skip_struct(move |s| {
Expand Down Expand Up @@ -377,6 +382,26 @@ fn test_apple(target: &str) {
"close" if x86_64 => true,
// FIXME(1.0): std removed libresolv support: https://github.com/rust-lang/rust/pull/102766
"res_init" => true,
// Marked available everywhere, but the `sys/random.h` header only
// exists on the macOS SDK.
// FIXME(madsmtm): Filed as FB23000895.
"getentropy" => !macos,
// Prohibited on iOS, tvOS, watchOS and visionOS.
// FIXME(madsmtm): Perhaps we should just not expose this symbol?
"system" => !macos,
// Marked unavailable on iOS, tvOS, watchOS and visionOS.
// FIXME(madsmtm): Perhaps we should just not expose these symbols?
"pthread_jit_write_protect_np"
| "pthread_jit_write_protect_supported_np"
| "pthread_jit_write_with_callback_np"
| "pthread_jit_write_freeze_callbacks_np"
| "gethostuuid" => !macos,
// Marked as unavailable on tvOS and watchOS.
// FIXME(madsmtm): Perhaps we should just not expose this symbol?
"execl" | "execle" | "execlp" | "execv" | "execve" | "execvp" | "execvP" | "fork"
| "sigaltstack" | "syscall" | "daemon" | "brk" | "sbrk" | "task_set_info"
| "exchangedata" => tvos || watchos,
ident if ident.starts_with("posix_spawn") => tvos || watchos,
_ => false,
}
});
Expand Down
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