Add the script for iOS build on macOS (#9)

.github/workflows/ios.yml

@@ -0,0 +1,29 @@
+name: iOS
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+
+env:
+  BUILD_TYPE: Release
+
+jobs:
+  build:
+    runs-on: macos-latest
+    timeout-minutes: 30
+
+    steps:
+      - uses: actions/checkout@v3
+        with:
+          submodules: true
+
+      - name: Build
+        run: |
+          sh build-ios.sh "$HOME/ios"
+      - name: Archive artifacts
+        uses: actions/upload-artifact@v3
+        with:
+          name: ios
+          path: ~/ios/

build-ios.sh

@@ -0,0 +1,133 @@
+#!/bin/sh
+
+if [ "$#" = "0" ] ; then
+  echo usage: $0 INSTALL_DIR
+  exit 1
+fi
+
+dest_dir="$1"
+root_build_dir="build-ios"
+rm -rf $root_build_dir || exit 1
+
+# Usage:
+#   build SDK ABI
+#
+# SDK:
+#   "iphoneos"
+#   "iphonesimulator"
+#
+# ABI:
+#   "arm64"
+#   "x86_64"
+#
+# Note that the combination of iphoneos and x86_64 makes no sense so far.
+build() {
+    sdk="$1"
+    abi="$2"
+    build_dir="$root_build_dir/$sdk-$abi"
+
+    case "$sdk" in
+    iphoneos)
+        destination="generic/platform=iOS"
+        ;;
+    iphonesimulator)
+        destination="generic/platform=iOS Simulator"
+        ;;
+    *)
+        echo unknown SDK: $sdk
+        exit 1
+    esac
+    # Note that although it is possible to specify
+    #   -DCMAKE_OSX_ARCHITECTURES="arm64;x86_64"
+    # and create the fat file at once, we will not do so here because we will
+    # compile with different configurations for each architecture. Instead, we
+    # will use lipo to create the fat file with non-fat files later.
+    cmake -S . -B $build_dir -G Xcode \
+        -DCMAKE_BUILD_TYPE=Release \
+        -DCMAKE_SYSTEM_NAME="iOS" \
+        -DCMAKE_OSX_ARCHITECTURES="$abi" \
+        -DCMAKE_OSX_DEPLOYMENT_TARGET=13.0 \
+        -DCMAKE_XCODE_ATTRIBUTE_ONLY_ACTIVE_ARCH=NO \
+        -DCMAKE_IOS_INSTALL_COMBINED=NO \
+        -DCMAKE_POSITION_INDEPENDENT_CODE="ON" \
+        -DCMAKE_INSTALL_PREFIX:PATH="$PWD/$build_dir/exports" \
+        -DBUILD_TESTSUITE=OFF \
+        || exit 1
+    # Note that the following command does not work:
+    #   cmake --install $build_dir
+    cmake --build $build_dir --target install --config Release -v \
+        -- -sdk $sdk -destination "$destination" || exit 1
+}
+
+# Usage:
+#   install_lib LIBRARY
+#
+# LIBRARY must be either a ".a" or ".dylib" file.
+install_lib() {
+    lib="$1"
+    install $root_build_dir/iphoneos-arm64/exports/lib/$lib \
+        $dest_dir/iphoneos/lib/ || exit 1
+    rm -f $dest_dir/iphonesimulator/lib/$lib
+    lipo -create \
+        $root_build_dir/iphonesimulator-arm64/exports/lib/$lib \
+        $root_build_dir/iphonesimulator-x86_64/exports/lib/$lib \
+        -output $dest_dir/iphonesimulator/lib/$lib || exit 1
+}
+
+# Usage:
+#   install_include SDK ABI
+install_include() {
+    sdk="$1"
+    abi="$2"
+    from="$root_build_dir/$sdk-$abi/exports/include"
+    to="$dest_dir/$sdk/include"
+    mkdir -p $to || exit 1
+    (cd $from && find . -type d -print0) \
+        | xargs -0 -I "{}" install -m 755 -d "${to}/{}" || exit 1
+    (cd $from && find . -type f -print0) \
+        | xargs -0 -I "{}" install -m 644 "$from/{}" "${to}/{}" || exit 1
+}
+
+combo_list="iphoneos-arm64 iphonesimulator-arm64 iphonesimulator-x86_64"
+
+for combo in $combo_list ; do
+    sdk=${combo%-*}
+    abi=${combo#*-}
+    build $sdk $abi || exit 1
+done
+
+for combo in $combo_list ; do
+    sdk=${combo%-*}
+    abi=${combo#*-}
+    build_dir="$root_build_dir/$sdk-$abi"
+    lipo -info $build_dir/exports/lib/libmimicssl-aes128-cbc-decrypt.a || exit 1
+done
+
+mkdir -p $dest_dir \
+    $dest_dir/iphoneos/include \
+    $dest_dir/iphoneos/lib \
+    $dest_dir/iphonesimulator/include \
+    $dest_dir/iphonesimulator/lib \
+    $dest_dir/xcframeworks || exit 1
+
+staticlib=libmimicssl-aes128-cbc-decrypt.a
+sharedlib=libmimicssl-aes128-cbc-decrypt.dylib
+for lib in $staticlib $sharedlib ; do
+    install_lib $lib || exit 1
+done
+
+sdk_list="iphoneos iphonesimulator"
+for sdk in $sdk_list ; do
+    # Here, we consider header files of the "iphonesimulator" identical
+    # regardless of the architecture.
+    install_include $sdk arm64 || exit 1
+done
+
+xcframework=mimicssl-aes128-cbc-decrypt.xcframework
+rm -rf $dest_dir/xcframeworks/$xcframework
+xcodebuild -create-xcframework \
+  -library $dest_dir/iphoneos/lib/$staticlib \
+    -headers $dest_dir/iphoneos/include \
+  -library $dest_dir/iphonesimulator/lib/$staticlib \
+    -headers $dest_dir/iphonesimulator/include \
+  -output $dest_dir/xcframeworks/$xcframework || exit 1

evp-example-cli/CMakeLists.txt

@@ -2,6 +2,16 @@ set(CMAKE_CXX_STANDARD 23)
 
 add_executable(evp-example-cli main.cxx)
 
+if("${CMAKE_SYSTEM_NAME}" STREQUAL "iOS")
+    set_target_properties(evp-example-cli PROPERTIES
+        XCODE_ATTRIBUTE_CODE_SIGNING_ALLOWED "NO"
+        XCODE_ATTRIBUTE_ENABLE_BITCODE "NO"
+        MACOSX_BUNDLE_BUNDLE_NAME evp-example-cli
+        MACOSX_BUNDLE_BUNDLE_VERSION 1.0
+        MACOSX_BUNDLE_SHORT_VERSION_STRING 1.0
+        MACOSX_BUNDLE_LONG_VERSION_STRING 1.0)
+endif()
+
 target_include_directories(evp-example-cli PRIVATE
     mimicssl-aes128-cbc-decrypt)
 

libmimicssl-aes128-cbc-decrypt/CMakeLists.txt

@@ -25,6 +25,20 @@ if("${CMAKE_SYSTEM_NAME}" STREQUAL "Android")
     else()
         set(SOURCES src/evp.c src/Aes128Cbc.c)
     endif()
+elseif("${CMAKE_SYSTEM_NAME}" STREQUAL "iOS")
+    if("${CMAKE_OSX_ARCHITECTURES}" STREQUAL "arm64")
+        set(SOURCES src/evp.c src/aarch64_Aes128Cbc.c)
+    elseif("${CMAKE_OSX_ARCHITECTURES}" STREQUAL "x86_64")
+        set(OPTIONS -msse3 -maes)
+        set(SOURCES src/evp.c src/x86_64_Aes128Cbc.c)
+    endif()
+    set_target_properties(mimicssl-aes128-cbc-decrypt-shared PROPERTIES
+        XCODE_ATTRIBUTE_CODE_SIGNING_ALLOWED "NO"
+        XCODE_ATTRIBUTE_ENABLE_BITCODE "NO"
+        MACOSX_BUNDLE_BUNDLE_NAME mimicssl-aes128-cbc-decrypt
+        MACOSX_BUNDLE_BUNDLE_VERSION 1.0
+        MACOSX_BUNDLE_SHORT_VERSION_STRING 1.0
+        MACOSX_BUNDLE_LONG_VERSION_STRING 1.0)
 elseif("${CMAKE_SYSTEM_NAME}" STREQUAL "Darwin"
         AND "${CMAKE_SYSTEM_PROCESSOR}" STREQUAL "arm64")
     set(SOURCES src/evp.c src/aarch64_Aes128Cbc.c)

testsuite/CMakeLists.txt

@@ -21,6 +21,20 @@ if("${CMAKE_SYSTEM_NAME}" STREQUAL "Android")
     else()
         set(SOURCES main.cxx)
     endif()
+elseif("${CMAKE_SYSTEM_NAME}" STREQUAL "iOS")
+    if("${CMAKE_OSX_ARCHITECTURES}" STREQUAL "arm64")
+        set(SOURCES aarch64_main.cxx)
+    elseif("${CMAKE_OSX_ARCHITECTURES}" STREQUAL "x86_64")
+        set(OPTIONS -msse3 -maes)
+        set(SOURCES x86_64_main.cxx)
+    endif()
+    set_target_properties(testsuite PROPERTIES
+        XCODE_ATTRIBUTE_CODE_SIGNING_ALLOWED "NO"
+        XCODE_ATTRIBUTE_ENABLE_BITCODE "NO"
+        MACOSX_BUNDLE_BUNDLE_NAME mimicssl-aes128-cbc-decrypt-testsuite
+        MACOSX_BUNDLE_BUNDLE_VERSION 1.0
+        MACOSX_BUNDLE_SHORT_VERSION_STRING 1.0
+        MACOSX_BUNDLE_LONG_VERSION_STRING 1.0)
 elseif("${CMAKE_SYSTEM_NAME}" STREQUAL "Darwin"
         AND "${CMAKE_SYSTEM_PROCESSOR}" STREQUAL "arm64")
     set(SOURCES aarch64_main.cxx)