1 files changed, 62 insertions, 0 deletions
diff --git a/src/csharp/experimental/build_native_ext_for_ios.sh b/src/csharp/experimental/build_native_ext_for_ios.sh
new file mode 100755
index 0000000000..69c9cdf021
--- /dev/null
+++ b/src/csharp/experimental/build_native_ext_for_ios.sh
@@ -0,0 +1,62 @@
+#!/bin/sh
+# Copyright 2018 The gRPC Authors
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# Helper script to crosscompile grpc_csharp_ext native extension for Android.
+
+set -ex
+
+cd "$(dirname "$0")/../../.."
+
+# Usage: build <iphoneos|iphonesimulator> <arm64|x86_64|...>
+function build {
+    SDK="$1"
+    ARCH="$2"
+
+    PATH_AR="$(xcrun --sdk $SDK --find ar)"
+    PATH_CC="$(xcrun --sdk $SDK --find clang)"
+    PATH_CXX="$(xcrun --sdk $SDK --find clang++)"
+
+    # TODO(jtattermusch): add  -mios-version-min=6.0 and -Wl,ios_version_min=6.0
+    CPPFLAGS="-O2 -Wframe-larger-than=16384 -arch $ARCH -isysroot $(xcrun --sdk $SDK --show-sdk-path) -DPB_NO_PACKED_STRUCTS=1"
+    LDFLAGS="-arch $ARCH -isysroot $(xcrun --sdk $SDK --show-sdk-path)"
+
+    # TODO(jtattermusch): revisit the build arguments
+    make -j4 static_csharp \
+        VALID_CONFIG_ios_$ARCH="1" \
+        CC_ios_$ARCH="$PATH_CC" \
+        CXX_ios_$ARCH="$PATH_CXX" \
+        LD_ios_$ARCH="$PATH_CC" \
+        LDXX_ios_$ARCH="$PATH_CXX" \
+        CPPFLAGS_ios_$ARCH="$CPPFLAGS" \
+        LDFLAGS_ios_$ARCH="$LDFLAGS" \
+        DEFINES_ios_$ARCH="NDEBUG" \
+        CONFIG="ios_$ARCH"
+}
+
+# Usage: fatten <grpc_csharp_ext|...>
+function fatten {
+    LIB_NAME="$1"
+
+    mkdir -p libs/ios
+    lipo -create -output libs/ios/lib$LIB_NAME.a \
+        libs/ios_arm64/lib$LIB_NAME.a \
+        libs/ios_x86_64/lib$LIB_NAME.a
+}
+
+build iphoneos arm64
+build iphonesimulator x86_64
+
+fatten grpc
+fatten grpc_csharp_ext