perform full LTO during Android .so build using rustc

.bazelrc

@@ -25,6 +25,12 @@ build --features=swift.use_global_module_cache
 # Gate the references to androidndk behind a flag to support building on arm linux.
 build:android --android_crosstool_top=@androidndk//:toolchain
 
+# TODO(snowp): Remove this once the below issues are resolved.
+# https://github.com/bazelbuild/rules_rust/issues/3564
+# https://github.com/bazelbuild/rules_rust/issues/3627
+build:ios --config=fake-nightly
+build:ios --@rules_rust//rust/settings:experimental_use_allocator_libraries_with_mangled_symbols
+
 build --@rules_rust//rust/settings:rustfmt.toml=//:rustfmt.toml
 build --@rules_rust//rust/settings:clippy.toml=//:.clippy.toml
 
@@ -70,24 +76,23 @@ build:release-common --config=abort-panic
 # Size optimizations, codegen-units=1 go along side LTO, which accounts for
 # about 10% reduction; -z has a non-zero smaller impact (a few pp).
 build:release-common --@rules_rust//rust/settings:extra_rustc_flag='-Ccodegen-units=1'
-build:release-common --@rules_rust//rust/settings:extra_rustc_flag='-Copt-level=s'
-build:release-common --@rules_rust//rust/settings:extra_rustc_flag='-Clto=fat'
-# Without the next line, rules_rust will add -Clinker-plugin-lto which would be amazing
-# but the ndk's lld won't support the output
-build:release-common --@rules_rust//rust/settings:lto='manual'
+build:release-common --@rules_rust//rust/settings:extra_rustc_flag='-Copt-level=z'
 
 build:release-android --define android_strip_symbols=true
 build:release-android --android_platforms=@rules_android//:armeabi-v7a,@rules_android//:arm64-v8a,@rules_android//:x86,@rules_android//:x86_64
 build:release-android --config=release-common
-build:release-android --copt=-flto=thin --linkopt=-flto=thin
 build:release-android --config=android
+build:release-android --@rules_rust//rust/settings:lto='fat'
 build:release-android --linkopt=-Wl,--pack-dyn-relocs=android
+# TODO(snowp): This should do better but requires a certain version of Android. 
+# Investigate what this is and track when we can use it.
 # build:release-android --linkopt=-Wl,--use-android-relr-tags
 
 # Custom iOS release configuration
 build:force-xcode-version --ios_simulator_device="iPhone 15"
 build:force-xcode-version --ios_simulator_version=18.2
 build:force-xcode-version --xcode_version=16.2
+build:release-ios --config=ios
 build:release-ios --config=release-common --config=force-xcode-version
 build:release-ios --features=swift.enable_library_evolution
 build:release-ios --features=swift.emit_swiftinterface

.github/workflows/ios.yaml

@@ -29,7 +29,7 @@ jobs:
       - name: Check for workflow file changes
         id: workflow_check
         run: |
-          ./ci/files_changed.sh .github/workflows/ios.yaml
+          ./ci/files_changed.sh .github/workflows/ios.yaml MODULE.bazel MODULE.bazel.lock
         continue-on-error: true
       - name: Determine if tests should run
         id: check_changes_separate
@@ -92,7 +92,7 @@ jobs:
       - name: "Install dependencies"
         run: ./ci/mac_ci_setup.sh
       - name: Run iOS tests (tsan)
-        run: env -u ANDROID_NDK_HOME ./bazelw test $(./bazelw query 'kind(ios_unit_test, //test/platform/swift/unit_integration/core/...)') --test_tag_filters=macos_only --test_output=errors --config ci
+        run: env -u ANDROID_NDK_HOME ./bazelw test $(./bazelw query 'kind(ios_unit_test, //test/platform/swift/unit_integration/core/...)') --test_tag_filters=macos_only --test_output=errors --config ci --config ios
   verify_ios:
     runs-on: ubuntu-latest
     needs: ["macos_tsan", "swift_hello_world"]

BUILD

@@ -88,15 +88,15 @@ android_artifacts(
     native_deps = select({
         # When targeting an optimized build, use the stripped binary. The symbols are collected prior to stripping and exposed via capture_symbols below.
         "//bazel/android:strip_symbols": [":capture.debug_info"],
-        "//conditions:default": ["//platform/jvm:capture"],
+        "//conditions:default": ["//platform/jvm:capture_shared"],
     }),
     proguard_rules = "//platform/jvm:proguard",
     visibility = ["//visibility:public"],
 )
 
 android_debug_info(
     name = "capture.debug_info",
-    dep = "//platform/jvm:capture",
+    dep = "//platform/jvm:capture_shared",
     tags = ["manual"],
 )
 

MODULE.bazel

@@ -4,7 +4,7 @@ module(name = "capture-sdk")
 # Constants
 ####################
 
-RUST_VERSION = "1.88.0"
+RUST_VERSION = "1.90.0"
 
 OKHTTP_VERSION = "4.12.0"
 
@@ -53,7 +53,7 @@ bazel_dep(name = "platforms", version = "0.0.11")
 bazel_dep(name = "rules_kotlin", version = "2.1.9")
 bazel_dep(name = "rules_proto", version = "7.1.0")
 bazel_dep(name = "protobuf", version = "29.3")
-bazel_dep(name = "rules_rust", version = "0.62.0")
+bazel_dep(name = "rules_rust", version = "0.65.0")
 bazel_dep(name = "rules_shell", version = "0.4.0")
 
 # Required by android_artifacts for pom_file, it's not in bazel central registry
@@ -288,18 +288,18 @@ rust.toolchain(
     #
     # tl;dr; run e.g. $ ./tools/rust_std_checksum.sh 1.82.0
     sha256s = {
-        "rust-std-" + RUST_VERSION + "-aarch64-apple-ios-sim.tar.gz": "e9505b25f37f49d90f2edd31ea8d4d20362e8dfe48c036f49dc4e638abf90dc9",
-        "rust-std-" + RUST_VERSION + "-aarch64-apple-ios.tar.gz": "0072ccac226551ae06865d963c74e872b8d425f4afe6465036034656880b3f5a",
-        "rust-std-" + RUST_VERSION + "-x86_64-apple-ios.tar.gz": "98678a0c84760458dd971c548de495ed155d9f0b0fd59bb21df7d9e733fd97f7",
-        "rust-std-" + RUST_VERSION + "-aarch64-linux-android.tar.gz": "9d1408d9e5ec0fb02904f18b5543318c092488069eae79e1c3af60a1ae27124d",
-        "rust-std-" + RUST_VERSION + "-armv7-linux-androideabi.tar.gz": "48132028374a7ac64b07dc4f8c12c5ea6bdbf9cd400a3e622470d32c10500ced",
-        "rust-std-" + RUST_VERSION + "-i686-linux-android.tar.gz": "b22d731679d0ae2567d2a3bf1c2d519e5c237ef4466c1d475aed7313f0304549",
-        "rustc-" + RUST_VERSION + "-aarch64-apple-darwin.tar.gz": "539d09b27becd0c52e15f6551e3756aa5ce0fc14484a922731abd0341967eea8",
-        "cargo-" + RUST_VERSION + "-aarch64-apple-darwin.tar.gz": "b4c5c9ba40b62f3486f05133ae2a739d99d1ad05566d73ad6bc6370636e2de7a",
-        "llvm-tools-" + RUST_VERSION + "-aarch64-apple-darwin.tar.gz": "9c0487e42dce9b039dadfd855e7b6d690d669298250b7910ad58655fa8466a61",
-        "rust-std-" + RUST_VERSION + "-aarch64-apple-darwin.tar.gz": "f852990a4bb1a84cef74fb92d0c9715b453379c32af43a8b3b357cadcc78f542",
-        "clippy-" + RUST_VERSION + "-aarch64-apple-darwin.tar.gz": "ffbf7fabb4271b5dfbaf9e8de7001837cd67a46f89d9217dcbc8df91b9ff8794",
-        "rustfmt-" + RUST_VERSION + "-aarch64-apple-darwin.tar.gz": "b9658e85e2adfaa68c4b9610d14a6194d66aea3547e5af09d40616adc6c6427a",
+        "rust-std-" + RUST_VERSION + "-aarch64-apple-ios-sim.tar.gz": "7cfa5f18307d198da5e28fa9c7dc129cb8856131cf1121fed91a756c2a7b3580",
+        "rust-std-" + RUST_VERSION + "-aarch64-apple-ios.tar.gz": "596585ba45607c0487cec70ba1b9b3215ef6826de1bd59a44273b4f3f442f3b2",
+        "rust-std-" + RUST_VERSION + "-x86_64-apple-ios.tar.gz": "e0e42c0139ccd113f7b8c671071aa6c9999208a932847eefdcdc2b3ea8099524",
+        "rust-std-" + RUST_VERSION + "-aarch64-linux-android.tar.gz": "0094d52b27d0c3091000f9c439b683a205c15cbd713acafd1a8febee42ed448a",
+        "rust-std-" + RUST_VERSION + "-armv7-linux-androideabi.tar.gz": "1ce1491fd05ddd65436a130d0a84dc4230f542bef838c16c61375f94dcf1b727",
+        "rust-std-" + RUST_VERSION + "-i686-linux-android.tar.gz": "40c03f9fd057fdcb28223166ae22ebf667ae76727773fd3c33eeb1088ded9509",
+        "rustc-" + RUST_VERSION + "-aarch64-apple-darwin.tar.gz": "77e8d4c354aab89b2abcd4608d2cb7612a99000d8064491aeafbc325c757943a",
+        "cargo-" + RUST_VERSION + "-aarch64-apple-darwin.tar.gz": "a242bb8d88d4d1b621f33742d0c718ebb5a551b07d21240e8b8c31152dc29737",
+        "llvm-tools-" + RUST_VERSION + "-aarch64-apple-darwin.tar.gz": "d89589963e941955aeb65ce4e71f88322686f7e4d65f66a87a05c8b893a6cf78",
+        "rust-std-" + RUST_VERSION + "-aarch64-apple-darwin.tar.gz": "30d6e3008a288f779c90c92d867dcd4f05fd5107d7f3e69d4d37a5945878110a",
+        "clippy-" + RUST_VERSION + "-aarch64-apple-darwin.tar.gz": "323a3ebca03d5aa7dc8d8d54ac05963e08a1c4fb22066ef6b05ee5398e397b12",
+        "rustfmt-" + RUST_VERSION + "-aarch64-apple-darwin.tar.gz": "0fff92769fbe393468584232a30ae8e0ea01eb2242201122eea56593b30861ac",
     },
     urls = [
         # NOTE: `urls` are technically mirrors so we want to make sure we always try our own first then the official ones.
@@ -313,6 +313,7 @@ rust.toolchain(
     ],
     versions = [
         RUST_VERSION,
+        "nightly/2025-10-02",
     ],
 )
 use_repo(rust, "rust_toolchains")