Remove std_detect from stdarch's CI

library/stdarch/.github/workflows/main.yml

@@ -258,7 +258,7 @@ jobs:
   # Check that the generated files agree with the checked-in versions.
   check-stdarch-gen:
     needs: [style]
-    name: Check stdarch-gen-{arm, loongarch} output 
+    name: Check stdarch-gen-{arm, loongarch} output
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v4
@@ -277,22 +277,11 @@ jobs:
         cargo run --bin=stdarch-gen-loongarch --release -- crates/stdarch-gen-loongarch/lasx.spec
         git diff --exit-code
 
-  build-std-detect:
-    needs: [style]
-    name: Build std_detect
-    runs-on: ubuntu-latest
-    steps:
-    - uses: actions/checkout@v4
-    - name: Install Rust
-      run: rustup update nightly && rustup default nightly
-    - run: ./ci/build-std-detect.sh
-
   conclusion:
     needs:
       - docs
       - verify
       - test
-      - build-std-detect
       - check-stdarch-gen
     runs-on: ubuntu-latest
     # We need to ensure this job does *not* get skipped if its dependencies fail,

library/stdarch/ci/build-std-detect.sh

@@ -1,46 +0,0 @@
-#!/usr/bin/env bash
-
-# Build std_detect on non-Linux & non-x86 targets.
-#
-# In std_detect, non-x86 targets have OS-specific implementations,
-# but we can test only Linux in CI. This script builds targets supported
-# by std_detect but cannot be tested in CI.
-
-set -ex
-cd "$(dirname "$0")"/..
-
-targets=(
-    # Linux
-    aarch64-unknown-linux-musl
-    armv5te-unknown-linux-musleabi
-    aarch64-unknown-linux-ohos
-    armv7-unknown-linux-ohos
-
-    # Android
-    aarch64-linux-android
-    arm-linux-androideabi
-
-    # FreeBSD
-    aarch64-unknown-freebsd
-    armv6-unknown-freebsd
-    powerpc-unknown-freebsd
-    powerpc64-unknown-freebsd
-
-    # OpenBSD
-    aarch64-unknown-openbsd
-
-    # Windows
-    aarch64-pc-windows-msvc
-)
-
-rustup component add rust-src # for -Z build-std
-
-cd crates/std_detect
-for target in "${targets[@]}"; do
-    if rustup target add "${target}" &>/dev/null; then
-        cargo build --target "${target}"
-    else
-        # tier 3 targets requires -Z build-std.
-        cargo build -Z build-std="core,alloc" --target "${target}"
-    fi
-done

library/stdarch/ci/dox.sh

@@ -16,10 +16,7 @@ dox() {
   cargo clean --target "${1}"
 
   cargo build --verbose --target "${1}" --manifest-path crates/core_arch/Cargo.toml
-  cargo build --verbose --target "${1}" --manifest-path crates/std_detect/Cargo.toml
-
   cargo doc --verbose --target "${1}" --manifest-path crates/core_arch/Cargo.toml
-  cargo doc --verbose --target "${1}" --manifest-path crates/std_detect/Cargo.toml
 }
 
 if [ -z "$1" ]; then

library/stdarch/ci/run-docker.sh

@@ -37,7 +37,6 @@ run() {
       --env NORUN \
       --env RUSTFLAGS \
       --env CARGO_UNSTABLE_BUILD_STD \
-      --env RUST_STD_DETECT_UNSTABLE \
       --volume "${HOME}/.cargo":/cargo \
       --volume "$(rustc --print sysroot)":/rust:ro \
       --volume "$(pwd)":/checkout:ro \

library/stdarch/ci/run.sh

@@ -78,20 +78,12 @@ cargo_test() {
 }
 
 CORE_ARCH="--manifest-path=crates/core_arch/Cargo.toml"
-STD_DETECT="--manifest-path=crates/std_detect/Cargo.toml"
 STDARCH_EXAMPLES="--manifest-path=examples/Cargo.toml"
 INTRINSIC_TEST="--manifest-path=crates/intrinsic-test/Cargo.toml"
 
 cargo_test "${CORE_ARCH} ${PROFILE}"
 
 if [ "$NOSTD" != "1" ]; then
-    cargo_test "${STD_DETECT} ${PROFILE}"
-
-    cargo_test "${STD_DETECT} --no-default-features"
-    cargo_test "${STD_DETECT} --no-default-features --features=std_detect_file_io"
-    cargo_test "${STD_DETECT} --no-default-features --features=std_detect_dlsym_getauxval"
-    cargo_test "${STD_DETECT} --no-default-features --features=std_detect_dlsym_getauxval,std_detect_file_io"
-
     cargo_test "${STDARCH_EXAMPLES} ${PROFILE}"
 fi
 
@@ -139,7 +131,7 @@ case ${TARGET} in
         cargo_test "${PROFILE}"
         ;;
 
-    # Setup aarch64 & armv7 specific variables, the runner, along with some 
+    # Setup aarch64 & armv7 specific variables, the runner, along with some
     # tests to skip
     aarch64-unknown-linux-gnu*)
         TEST_CPPFLAGS="-fuse-ld=lld -I/usr/aarch64-linux-gnu/include/ -I/usr/aarch64-linux-gnu/include/c++/9/aarch64-linux-gnu/"