Add Changes.md entry for 0.0.12

Bump actions/cache to v4

.github/workflows/lint.yml

@@ -10,7 +10,7 @@ jobs:
     name: Check that code is lint clean using precious
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Configure Git
         run: |
           git config --global user.email "jdoe@example.com"

.github/workflows/test.yml

@@ -57,38 +57,14 @@ jobs:
             os: ubuntu-20.04
             target: i586-unknown-linux-musl
             expect_file_re: "ELF.+80386"
-            expect_cross: "--no-expect-cross"
-            expect_stripped: "--expect-stripped"
-            can_test: true
-
-          - platform_name: Linux-mips
-            os: ubuntu-20.04
-            target: mips-unknown-linux-musl
-            expect_file_re: "MIPS32.+mips-"
             expect_cross: "--expect-cross"
             expect_stripped: "--no-expect-stripped"
             can_test: true
 
-          - platform_name: Linux-mipsel
+          - platform_name: Linux-i686
             os: ubuntu-20.04
-            target: mipsel-unknown-linux-musl
-            expect_file_re: "MIPS32.+mipsel-"
-            expect_cross: "--expect-cross"
-            expect_stripped: "--no-expect-stripped"
-            can_test: true
-
-          - platform_name: Linux-mips64
-            os: ubuntu-20.04
-            target: mips64-unknown-linux-muslabi64
-            expect_file_re: "MIPS64"
-            expect_cross: "--expect-cross"
-            expect_stripped: "--no-expect-stripped"
-            can_test: true
-
-          - platform_name: Linux-mips64el
-            os: ubuntu-20.04
-            target: mips64el-unknown-linux-muslabi64
-            expect_file_re: "MIPS64"
+            target: i686-unknown-linux-musl
+            expect_file_re: "ELF.+80386"
             expect_cross: "--expect-cross"
             expect_stripped: "--no-expect-stripped"
             can_test: true
@@ -183,7 +159,7 @@ jobs:
     runs-on: ${{ matrix.platform.os }}
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Copy test project to root
         shell: bash
         run: |

Changes.md

@@ -1,3 +1,14 @@
+## 0.0.12 - 2024-02-25
+
+- Bumped the version of `actions/cache` used in this action to v4. The v3 version uses Node 16,
+  which causes warnings when run.
+
+## 0.0.11 - 2023-12-17
+
+- Use `cross` when compiling for 32-bit Linux targets. While in theory this should work without
+  `cross`, compiling `openssl` with the `vendored` feature fails when we run
+  `cargo build --target i686-unknown-linux-musl`.
+
 ## 0.0.10 - 2023-12-10
 
 - Fixed handling of crates with multiple binaries. Attempting to strip binaries for such a crate

README.md

@@ -58,17 +58,17 @@ This action takes the following parameters:
 | Key                 | Type                                           | Required? | Description                                                                                                                                                                       |
 | ------------------- | ---------------------------------------------- | --------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
 | `command`           | string (one of `build`, `test`, or `both`)     | no        | The command(s) to run. The default is `build`. Running the `test` command will fail with \*BSD targets, non-x86 Windows, and macOS ARM.                                           |
-| `target`            | string                                         | yes       | The target triple to compile for. This should be one of the targets listed by running `rustup target list`.                                                                       |
+| `target`            | string                                         | yes       | The target triple to compile for. This should be one of the targets found by running `rustup target list`.                                                                        |
 | `working-directory` | string                                         | no        | The working directory in which to run the `cargo` or `cross` commands. Defaults to the current directory (`.`).                                                                   |
 | `toolchain`         | string (one of `stable`, `beta`, or `nightly`) | no        | The Rust toolchain version to install. The default is `stable`.                                                                                                                   |
 | `GITHUB_TOKEN`      | string                                         | no        | Defaults to the value of `${{ github.token }}`.                                                                                                                                   |
 | `args`              | string                                         | no        | A string-separated list of arguments to be passed to `cross build`, like `--release --locked`.                                                                                    |
-| `strip`             | boolean (`true` or `false`)                    | no        | If this is true, then the resulting binary will be stripped if possible. This is only possible for binaries which weren't cross-compiled.                                         |
+| `strip`             | boolean (`true` or `false`)                    | no        | If this is true, then the resulting binaries will be stripped if possible. This is only possible for binaries which weren't cross-compiled.                                       |
 | `cross-version`     | string                                         | no        | This can be used to set the version of `cross` to use. If specified, it should be a specific `cross` release tag. If this is not set then the latest version will always be used. |
 
 ## How it Works
 
-Under the hood, this action will compile your binary with either `cargo` or `cross`, depending on
+Under the hood, this action will compile your binaries with either `cargo` or `cross`, depending on
 the host machine and target. For Linux builds, it will always use `cross` except for builds
 targeting an x86 architecture like `x86_64` or `i686`.
 
@@ -82,7 +82,7 @@ build `cross`.
 When compiling on Windows, it will do so in a Powershell environment, which can matter in some
 corner cases, like compiling the `openssl` crate with the `vendored` feature.
 
-Finally, it will run `strip` to strip the binary if the `strip` parameter is true. This is only
+Finally, it will run `strip` to strip the binaries if the `strip` parameter is true. This is only
 possible for builds that are not done via `cross`. In addition, Windows builds for `aarch64` cannot
 be stripped either.
 

action.yml

@@ -67,7 +67,7 @@ runs:
       if: ${{ steps.determine-cross-compile.outputs.needs-cross == 'true' }}
     - name: Cache cross
       id: cache-cross
-      uses: actions/cache@v3
+      uses: actions/cache@v4
       with:
         path: ${{ steps.set-cross-dir.outputs.cross-dir }}/cross
         key: ${{ runner.os }}-${{ steps.determine-cross-version.outputs.cross-version }}

set-cross-compile.sh

@@ -10,7 +10,11 @@ if uname -a | grep --quiet --extended-regexp -i "darwin|msys|windows"; then
     exit 0
 fi
 
-if echo "$TARGET" | grep --quiet --extended-regexp -i '(x86_64|586|686).+linux-(gnu|musl)'; then
+# On Linux, we should be able to cross-compile to i586 and i686, but in
+# practice this fails with some crates, notably openssl with the "vendored"
+# feature. This feature makes it compile openssl itself, which fails without
+# cross.
+if echo "$TARGET" | grep --quiet --extended-regexp -i 'x86_64.+linux-(gnu|musl)'; then
     echo "needs-cross=false" >> $GITHUB_OUTPUT
     exit 0
 fi

test-project/Cargo.toml

@@ -14,3 +14,14 @@ path = "src/bin1.rs"
 [[bin]]
 name = "bin2"
 path = "src/bin2.rs"
+
+# workaround for https://github.com/cross-rs/cross/issues/1345
+[package.metadata.cross.target.x86_64-unknown-netbsd]
+pre-build = [
+    "mkdir -p /tmp/netbsd",
+    "curl https://cdn.netbsd.org/pub/NetBSD/NetBSD-9.2/amd64/binary/sets/base.tar.xz -O",
+    "tar -C /tmp/netbsd -xJf base.tar.xz",
+    "cp /tmp/netbsd/usr/lib/libexecinfo.so /usr/local/x86_64-unknown-netbsd/lib",
+    "rm base.tar.xz",
+    "rm -rf /tmp/netbsd",
+]

test-project/subcrate/Cargo.toml

@@ -3,6 +3,13 @@ name = "subcrate"
 version = "0.1.0"
 edition = "2021"
 
-# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
-
-[dependencies]
+# workaround for https://github.com/cross-rs/cross/issues/1345
+[package.metadata.cross.target.x86_64-unknown-netbsd]
+pre-build = [
+    "mkdir -p /tmp/netbsd",
+    "curl https://cdn.netbsd.org/pub/NetBSD/NetBSD-9.2/amd64/binary/sets/base.tar.xz -O",
+    "tar -C /tmp/netbsd -xJf base.tar.xz",
+    "cp /tmp/netbsd/usr/lib/libexecinfo.so /usr/local/x86_64-unknown-netbsd/lib",
+    "rm base.tar.xz",
+    "rm -rf /tmp/netbsd",
+]

tests/check-binary.pl

@@ -32,7 +32,8 @@ sub main {
     );
 
     check_cross(
-        path( $ENV{RUNNER_TEMP} ), $expect_cross,
+        path( $ENV{RUNNER_TEMP} ),
+        $expect_cross,
         $expect_cross_version
     );