Merge pull request #25098 from vgorloff/macos-to-android-crosscompile

Android Intel 32/64 bit (i.e. Android Simulator) support.

Author: drodriguez

cmake/modules/AddSwift.cmake

@@ -465,6 +465,10 @@ function(_add_variant_link_flags)
       set(android_libcxx_path "${SWIFT_ANDROID_NDK_PATH}/sources/cxx-stl/llvm-libc++/libs/armeabi-v7a")
     elseif("${LFLAGS_ARCH}" MATCHES aarch64)
       set(android_libcxx_path "${SWIFT_ANDROID_NDK_PATH}/sources/cxx-stl/llvm-libc++/libs/arm64-v8a")
+    elseif("${LFLAGS_ARCH}" MATCHES i686)
+      set(android_libcxx_path "${SWIFT_ANDROID_NDK_PATH}/sources/cxx-stl/llvm-libc++/libs/x86")
+    elseif("${LFLAGS_ARCH}" MATCHES x86_64)
+      set(android_libcxx_path "${SWIFT_ANDROID_NDK_PATH}/sources/cxx-stl/llvm-libc++/libs/x86_64")
     else()
       message(SEND_ERROR "unknown architecture (${LFLAGS_ARCH}) for android")
     endif()

cmake/modules/SwiftAndroidSupport.cmake

@@ -23,6 +23,10 @@ function(swift_android_lib_for_arch arch var)
     list(APPEND paths "${_prebuilt}/${_host}/lib/armv7-a")
   elseif(arch STREQUAL aarch64)
     list(APPEND paths "${_prebuilt}/${_host}/lib64")
+  elseif(arch STREQUAL i686)
+    list(APPEND paths "${_prebuilt}/${_host}/lib")
+  elseif(arch STREQUAL x86_64)
+    list(APPEND paths "${_prebuilt}/${_host}/lib64")
   else()
     message(SEND_ERROR "unknown architecture (${arch}) for android")
   endif()

cmake/modules/SwiftConfigureSDK.cmake

@@ -186,6 +186,16 @@ macro(configure_sdk_unix name architectures)
         set(SWIFT_SDK_ANDROID_ARCH_${arch}_ALT_SPELLING "aarch64")
         set(SWIFT_SDK_ANDROID_ARCH_${arch}_PATH "${SWIFT_ANDROID_NDK_PATH}/platforms/android-${SWIFT_ANDROID_API_LEVEL}/arch-arm64")
         set(SWIFT_SDK_ANDROID_ARCH_${arch}_TRIPLE "aarch64-unknown-linux-android")
+      elseif("${arch}" STREQUAL "i686")
+        set(SWIFT_SDK_ANDROID_ARCH_${arch}_NDK_TRIPLE "i686-linux-android")
+        set(SWIFT_SDK_ANDROID_ARCH_${arch}_ALT_SPELLING "i686")
+        set(SWIFT_SDK_ANDROID_ARCH_${arch}_PATH "${SWIFT_ANDROID_NDK_PATH}/platforms/android-${SWIFT_ANDROID_API_LEVEL}/arch-x86")
+        set(SWIFT_SDK_ANDROID_ARCH_${arch}_TRIPLE "i686-unknown-linux-android")
+      elseif("${arch}" STREQUAL "x86_64")
+        set(SWIFT_SDK_ANDROID_ARCH_${arch}_NDK_TRIPLE "x86_64-linux-android")
+        set(SWIFT_SDK_ANDROID_ARCH_${arch}_ALT_SPELLING "x86_64")
+        set(SWIFT_SDK_ANDROID_ARCH_${arch}_PATH "${SWIFT_ANDROID_NDK_PATH}/platforms/android-${SWIFT_ANDROID_API_LEVEL}/arch-x86_64")
+        set(SWIFT_SDK_ANDROID_ARCH_${arch}_TRIPLE "x86_64-unknown-linux-android")
       else()
         message(FATAL_ERROR "unknown arch for android SDK: ${arch}")
       endif()
@@ -196,8 +206,16 @@ macro(configure_sdk_unix name architectures)
       elseif("${CMAKE_HOST_SYSTEM_NAME}" STREQUAL "Linux")
         set(_swift_android_prebuilt_build "linux-x86_64")
       endif()
-      set(SWIFT_SDK_ANDROID_ARCH_${arch}_NDK_PREBUILT_PATH
+      if("${arch}" STREQUAL "i686")
+        set(SWIFT_SDK_ANDROID_ARCH_${arch}_NDK_PREBUILT_PATH
+          "${SWIFT_ANDROID_NDK_PATH}/toolchains/x86-${SWIFT_ANDROID_NDK_GCC_VERSION}/prebuilt/${_swift_android_prebuilt_build}")
+      elseif("${arch}" STREQUAL "x86_64")
+        set(SWIFT_SDK_ANDROID_ARCH_${arch}_NDK_PREBUILT_PATH
+          "${SWIFT_ANDROID_NDK_PATH}/toolchains/x86_64-${SWIFT_ANDROID_NDK_GCC_VERSION}/prebuilt/${_swift_android_prebuilt_build}")
+      else()
+        set(SWIFT_SDK_ANDROID_ARCH_${arch}_NDK_PREBUILT_PATH
           "${SWIFT_ANDROID_NDK_PATH}/toolchains/${SWIFT_SDK_ANDROID_ARCH_${arch}_NDK_TRIPLE}-${SWIFT_ANDROID_NDK_GCC_VERSION}/prebuilt/${_swift_android_prebuilt_build}")
+      endif()
     else()
       if(NOT SWIFT_SDK_${prefix}_ARCH_${arch}_PATH)
         set(SWIFT_SDK_${prefix}_ARCH_${arch}_PATH "/")