grpc-native: Working linux arm64 and x64

Author: Jozott00

cinterop-c/.bazelrc

@@ -1,8 +1,4 @@
 build --experimental_cc_static_library  --experimental_platform_in_output_dir
-build --action_env=KONAN_HOME
-build --host_action_env=KONAN_HOME
-build --cxxopt=-std=c++17
-build --host_cxxopt=-std=c++17
 
 build:release --compilation_mode=opt --strip=always
 
@@ -11,6 +7,6 @@ build:macos_x64 --platforms=@build_bazel_apple_support//platforms:macos_x86_64 -
 build:ios_arm64 --platforms=@build_bazel_apple_support//platforms:ios_arm64 --apple_platform_type=ios
 build:ios_simulator_arm64 --platforms=@build_bazel_apple_support//platforms:ios_sim_arm64 --apple_platform_type=ios
 build:ios_x64 --platforms=@build_bazel_apple_support//platforms:ios_x86_64 --apple_platform_type=ios
-build:linux_arm64 --platforms=@toolchains_llvm//platforms:linux-aarch64
 
-build:linux_x64 --platforms=@toolchains_llvm//platforms:linux-x86_64
+build:linux_arm64 --platforms=//platforms:linux_arm64
+build:linux_x64 --platforms=//platforms:linux_x86_64

cinterop-c/MODULE.bazel

@@ -29,10 +29,7 @@ bazel_dep(
 
 # Linux toolchain setup (cross-compile)
 
-#TODO: Remove
-bazel_dep(name = "toolchains_llvm", version = "1.4.0")
-
 register_toolchains(
     "//toolchain:toolchain_linux_x64_konan",
-    #    "//toolchain:exec_macos_konan",
+    "//toolchain:toolchain_linux_arm64_konan",
 )

cinterop-c/MODULE.bazel.lock

@@ -21,3 +21,12 @@ The binary can be updated by running
 ```bash
 ./gradlew :grpc:grpc-core:buildDependencyCLibGrpc_fat_iosArm64
 ```
+
+### Compiling for Linux
+
+To produce K/N compatible static libraries, we use the Konan toolchain for compilation.
+The Bazel toolchain is specified in `toolchain/` and requires the user to specify the
+`KONAN_HOME` variable like
+```bash
+bazel build //:protowire --config=linux_arm64 --define=KONAN_HOME=$HOME/.konan/kotlin-native-prebuilt-macos-aarch64-2.2.10
+```