grpc-native: Add support for iOS

cinterop-c/.bazelrc

@@ -1,4 +1,4 @@
 # we build the cc_static library bundled with all dependencies
-build --experimental_cc_static_library
+build --experimental_cc_static_library  --experimental_platform_in_output_dir
 
 build:release --compilation_mode=opt --strip=always

cinterop-c/.gitignore

@@ -12,3 +12,5 @@
 /.aswb/
 /.clwb/
 .idea/
+
+out/

cinterop-c/BUILD.bazel

@@ -15,7 +15,7 @@ cc_library(
     includes = ["include"],
     visibility = ["//visibility:public"],
     deps = [
-        "@com_github_grpc_grpc//:grpc"
+        "@com_github_grpc_grpc//:grpc",
     ],
 )
 

cinterop-c/MODULE.bazel

@@ -9,6 +9,9 @@ bazel_dep(
     version = "0.1.1",
 )
 
+# required to build for apple targets (like iOS)
+bazel_dep(name = "apple_support", version = "1.22.1", repo_name = "build_bazel_apple_support")
+
 # Protobuf
 bazel_dep(
     name = "protobuf",
@@ -19,6 +22,6 @@ bazel_dep(
 # gRPC library
 bazel_dep(
     name = "grpc",
-    version = "1.73.1",
+    version = "1.74.1",
     repo_name = "com_github_grpc_grpc",
 )

cinterop-c/build_target.sh

@@ -0,0 +1,36 @@
+#!/usr/bin/env bash
+#
+# Copyright 2023-2025 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+#
+
+set -Eeuo pipefail
+trap 'echo "ERROR: Build failed at ${BASH_SOURCE}:${LINENO}" >&2' ERR
+
+# Builds a static library for a specific platform (os/arch).
+#
+# Usage:
+#   ./build_target.sh //path:libtarget out_dir <platform> <short> <os>
+# Example:
+#   ./build_target.sh :protowire_static out @build_bazel_apple_support//platforms:ios_arm64 ios_arm64 ios
+#
+# The example will produce ./out/libprotowire_static.ios_arm64.a
+
+LABEL="${1:?need bazel target label}"
+DST="${2:?need output destination}"
+PLATFORM="${3:?need a platform for bazel build command}"
+OS="${4:?need the operating system of the target platform}"
+
+CONFIG=release
+
+mkdir -p $(dirname "$DST")
+
+echo "==> Building $LABEL to $DST" >&2
+bazel build "$LABEL" --platforms="$PLATFORM" --apple_platform_type="$OS" --config="$CONFIG" --announce_rc >/dev/null
+
+# Ask Bazel what file(s) this target produced under this platform
+out="$(bazel cquery "$LABEL" --platforms="$PLATFORM" --apple_platform_type="$OS" --config="$CONFIG" --output=files | head -n1)"
+[[ -n "$out" ]] || { echo "No output for $LABEL ($SHORT)"; exit 1; }
+
+cp -f "$out" "$DST"
+
+echo "Done. Binary written to: $DST"