Android CrossCompile on Mac: Fixes Cmake error "Unrecognized architecture on host system: armv7-a"

[vgorloff]

Hello!

This PR fixes error shown below:

cd $REPO/swift-everywhere-toolchain/ToolChain/Build/armv7a/swift-corelibs-foundation && \
cmake -G Ninja \
-DFOUNDATION_PATH_TO_LIBDISPATCH_SOURCE=$REPO/swift-everywhere-toolchain/ToolChain/Sources/swift-corelibs-libdispatch \
-DFOUNDATION_PATH_TO_LIBDISPATCH_BUILD=$REPO/swift-everywhere-toolchain/ToolChain/Build/armv7a/swift-corelibs-libdispatch \
-DCMAKE_BUILD_TYPE=Release \
-DCMAKE_TOOLCHAIN_FILE=$ndk-bundle/build/cmake/android.toolchain.cmake \
-DANDROID_STL=c++_static \
-DANDROID_TOOLCHAIN=clang \
-DANDROID_PLATFORM=android-24 \
-DANDROID_ABI=armeabi-v7a \
-DCMAKE_SYSTEM_NAME=Android \
-DCMAKE_C_FLAGS="-D__ANDROID__" \
-DCMAKE_CXX_FLAGS="-D__ANDROID__" \
-DICU_INCLUDE_DIR=$REPO/swift-everywhere-toolchain/ToolChain/Install/armv7a/icu/include \
-DICU_LIBRARY=$REPO/swift-everywhere-toolchain/ToolChain/Install/armv7a/icu/lib \
-DICU_I18N_LIBRARY_RELEASE=$REPO/swift-everywhere-toolchain/ToolChain/Install/armv7a/icu/lib/libicui18nswift.so \
-DICU_UC_LIBRARY_RELEASE=$REPO/swift-everywhere-toolchain/ToolChain/Install/armv7a/icu/lib/libicuucswift.so \
-DLIBXML2_INCLUDE_DIR=$REPO/swift-everywhere-toolchain/ToolChain/Install/armv7a/xml/include/libxml2 \
-DLIBXML2_LIBRARY=$REPO/swift-everywhere-toolchain/ToolChain/Install/armv7a/xml/lib/libxml2.so \
-DCURL_INCLUDE_DIR=$REPO/swift-everywhere-toolchain/ToolChain/Install/armv7a/curl/include \
-DCURL_LIBRARY=$REPO/swift-everywhere-toolchain/ToolChain/Install/armv7a/curl/lib/libcurl.so \
-DCMAKE_INSTALL_PREFIX=/ \
-DCMAKE_SWIFT_COMPILER="$REPO/swift-everywhere-toolchain/ToolChain/Build/darwin/swift/bin/swiftc" \
$REPO/swift-everywhere-toolchain/ToolChain/Sources/swift-corelibs-foundation

-- Found ICU: $REPO/swift-everywhere-toolchain/ToolChain/Install/armv7a/icu/include (found version "64.2")
CMake Error at cmake/modules/SwiftSupport.cmake:272 (message):
  Unrecognized architecture on host system: armv7-a
Call Stack (most recent call first):
  CMakeLists.txt:46 (get_swift_host_arch)


-- Configuring incomplete, errors occurred!

[vgorloff]

@swift-ci please test

[compnerd]

@swift-ci please test and merge