Merge branch 'master' into llvm-rc-preprocess-as-c

22 files changed, 323 insertions, 94 deletions

diff --git a/Modules/Platform/Android-Clang.cmake b/Modules/Platform/Android-Clang.cmake
index 160eada..3a279ca 100644
--- a/Modules/Platform/Android-Clang.cmake
+++ b/Modules/Platform/Android-Clang.cmake
@@ -7,6 +7,23 @@ if(__ANDROID_COMPILER_CLANG)
 endif()
 set(__ANDROID_COMPILER_CLANG 1)
 
+# Include the NDK hook.
+# It can be used by NDK to inject necessary fixes for an earlier cmake.
+if(CMAKE_ANDROID_NDK)
+  include(${CMAKE_ANDROID_NDK}/build/cmake/hooks/pre/Android-Clang.cmake OPTIONAL)
+endif()
+
+# Load flags from NDK. This file may provides the following variables:
+#   _ANDROID_NDK_INIT_CFLAGS
+#   _ANDROID_NDK_INIT_CFLAGS_DEBUG
+#   _ANDROID_NDK_INIT_CFLAGS_RELEASE
+#   _ANDROID_NDK_INIT_LDFLAGS
+#   _ANDROID_NDK_INIT_LDFLAGS_EXE
+if(CMAKE_ANDROID_NDK)
+  include(${CMAKE_ANDROID_NDK}/build/cmake/flags.cmake OPTIONAL
+          RESULT_VARIABLE _INCLUDED_FLAGS)
+endif()
+
 # Support for NVIDIA Nsight Tegra Visual Studio Edition was previously
 # implemented in the CMake VS IDE generators.  Avoid interfering with
 # that functionality for now.  Later we may try to integrate this.
@@ -34,20 +51,29 @@ endif()
 
 include(Platform/Android-Common)
 
-# The NDK toolchain configuration files at:
-#
-#   <ndk>/[build/core/]toolchains/*-clang*/setup.mk
-#
-# contain logic to set LLVM_TRIPLE for Clang-based toolchains for each target.
-# We need to produce the same target here to produce compatible binaries.
-include(Platform/Android/abi-${CMAKE_ANDROID_ARCH_ABI}-Clang)
+if(_INCLUDED_FLAGS)
+  # NDK provides the flags.
+  set(_ANDROID_ABI_INIT_CFLAGS "${_ANDROID_NDK_INIT_CFLAGS}")
+  set(_ANDROID_ABI_INIT_CFLAGS_DEBUG "${_ANDROID_NDK_INIT_CFLAGS_DEBUG}")
+  set(_ANDROID_ABI_INIT_CFLAGS_RELEASE "${_ANDROID_NDK_INIT_CFLAGS_RELEASE}")
+  set(_ANDROID_ABI_INIT_LDFLAGS "${_ANDROID_NDK_INIT_LDFLAGS}")
+  set(_ANDROID_ABI_INIT_EXE_LDFLAGS "${_ANDROID_NDK_INIT_LDFLAGS_EXE}")
+else()
+  # The NDK toolchain configuration files at:
+  #
+  #   <ndk>/[build/core/]toolchains/*-clang*/setup.mk
+  #
+  # contain logic to set LLVM_TRIPLE for Clang-based toolchains for each target.
+  # We need to produce the same target here to produce compatible binaries.
+  include(Platform/Android/abi-${CMAKE_ANDROID_ARCH_ABI}-Clang)
+endif()
 
 macro(__android_compiler_clang lang)
   if(NOT "x${lang}" STREQUAL "xASM")
     __android_compiler_common(${lang})
   endif()
   if(NOT CMAKE_${lang}_COMPILER_TARGET)
-    set(CMAKE_${lang}_COMPILER_TARGET "${_ANDROID_ABI_CLANG_TARGET}")
+    set(CMAKE_${lang}_COMPILER_TARGET "${CMAKE_ANDROID_ARCH_LLVM_TRIPLE}")
     if(CMAKE_ANDROID_NDK_TOOLCHAIN_UNIFIED)
       string(APPEND CMAKE_${lang}_COMPILER_TARGET "${CMAKE_SYSTEM_VERSION}")
     endif()
@@ -57,3 +83,9 @@ macro(__android_compiler_clang lang)
     set(_ANDROID_STL_NOSTDLIBXX 1)
   endif()
 endmacro()
+
+# Include the NDK hook.
+# It can be used by NDK to inject necessary fixes for an earlier cmake.
+if(CMAKE_ANDROID_NDK)
+  include(${CMAKE_ANDROID_NDK}/build/cmake/hooks/post/Android-Clang.cmake OPTIONAL)
+endif()
diff --git a/Modules/Platform/Android-Common.cmake b/Modules/Platform/Android-Common.cmake
index 581fde4..39da933 100644
--- a/Modules/Platform/Android-Common.cmake
+++ b/Modules/Platform/Android-Common.cmake
@@ -53,6 +53,12 @@ if(CMAKE_ANDROID_STL_TYPE)
       set(_ANDROID_STL_RTTI 0)
       macro(__android_stl lang)
         string(APPEND CMAKE_${lang}_FLAGS_INIT " -stdlib=libstdc++")
+        if(_ANDROID_STL_EXCEPTIONS OR _ANDROID_STL_RTTI)
+          string(APPEND CMAKE_${lang}_STANDARD_LIBRARIES " -lc++abi")
+          if(CMAKE_SYSTEM_VERSION LESS 21)
+            list(APPEND CMAKE_${lang}_STANDARD_LIBRARIES "-landroid_support")
+          endif()
+        endif()
       endmacro()
     elseif(CMAKE_ANDROID_STL_TYPE STREQUAL "c++_static")
       set(_ANDROID_STL_EXCEPTIONS 1)
@@ -81,6 +87,12 @@ if(CMAKE_ANDROID_STL_TYPE)
         "Android: STL '${CMAKE_ANDROID_STL_TYPE}' not supported by this NDK."
         )
     endif()
+    if(DEFINED CMAKE_ANDROID_RTTI)
+      set(_ANDROID_STL_RTTI ${CMAKE_ANDROID_RTTI})
+    endif()
+    if(DEFINED CMAKE_ANDROID_EXCEPTIONS)
+      set(_ANDROID_STL_EXCEPTIONS ${CMAKE_ANDROID_EXCEPTIONS})
+    endif()
   elseif(CMAKE_ANDROID_NDK)
 
     macro(__android_stl_inc lang dir req)
diff --git a/Modules/Platform/Android-Determine.cmake b/Modules/Platform/Android-Determine.cmake
index bc66ba1..c279086 100644
--- a/Modules/Platform/Android-Determine.cmake
+++ b/Modules/Platform/Android-Determine.cmake
@@ -5,6 +5,12 @@
 # This module detects platform-wide information about the Android target
 # in order to store it in "CMakeSystem.cmake".
 
+# Include the NDK hook.
+# It can be used by NDK to inject necessary fixes for an earlier cmake.
+if(CMAKE_ANDROID_NDK)
+  include(${CMAKE_ANDROID_NDK}/build/cmake/hooks/pre/Android-Determine.cmake OPTIONAL)
+endif()
+
 # Support for NVIDIA Nsight Tegra Visual Studio Edition was previously
 # implemented in the CMake VS IDE generators.  Avoid interfering with
 # that functionality for now.
@@ -209,6 +215,14 @@ if(CMAKE_ANDROID_NDK)
   # NDK >= 18 has abis.cmake. It provides:
   #   NDK_KNOWN_DEVICE_ABI32S
   #   NDK_KNOWN_DEVICE_ABI64S
+  # NDK >= 23 also provides:
+  #   NDK_KNOWN_DEVICE_ABIS
+  #   NDK_ABI_<abi>_PROC
+  #   NDK_ABI_<abi>_ARCH
+  #   NDK_ABI_<abi>_TRIPLE
+  #   NDK_ABI_<abi>_LLVM_TRIPLE
+  #   NDK_PROC_<processor>_ABI
+  #   NDK_ARCH_<arch>_ABI
   include("${CMAKE_ANDROID_NDK}/build/cmake/abis.cmake" OPTIONAL RESULT_VARIABLE _INCLUDED_ABIS)
 endif()
 
@@ -247,60 +261,75 @@ else()
 endif()
 
 if(_INCLUDED_ABIS)
-  set(_ANDROID_KNOWN_ABIS ${NDK_KNOWN_DEVICE_ABI32S} ${NDK_KNOWN_DEVICE_ABI64S})
+  if(NDK_KNOWN_DEVICE_ABIS)
+    set(_ANDROID_KNOWN_ABIS ${NDK_KNOWN_DEVICE_ABIS})
+  else()
+    set(_ANDROID_KNOWN_ABIS ${NDK_KNOWN_DEVICE_ABI32S} ${NDK_KNOWN_DEVICE_ABI64S})
+  endif()
 endif()
 
-# https://developer.android.com/ndk/guides/abis.html
-
-set(_ANDROID_ABI_arm64-v8a_PROC     "aarch64")
-set(_ANDROID_ABI_arm64-v8a_ARCH     "arm64")
-set(_ANDROID_ABI_arm64-v8a_TRIPLE   "aarch64-linux-android")
-set(_ANDROID_ABI_armeabi-v7a_PROC   "armv7-a")
-set(_ANDROID_ABI_armeabi-v7a_ARCH   "arm")
-set(_ANDROID_ABI_armeabi-v7a_TRIPLE "arm-linux-androideabi")
-set(_ANDROID_ABI_armeabi-v6_PROC    "armv6")
-set(_ANDROID_ABI_armeabi-v6_ARCH    "arm")
-set(_ANDROID_ABI_armeabi-v6_TRIPLE  "arm-linux-androideabi")
-set(_ANDROID_ABI_armeabi_PROC       "armv5te")
-set(_ANDROID_ABI_armeabi_ARCH       "arm")
-set(_ANDROID_ABI_armeabi_TRIPLE     "arm-linux-androideabi")
-set(_ANDROID_ABI_mips_PROC          "mips")
-set(_ANDROID_ABI_mips_ARCH          "mips")
-set(_ANDROID_ABI_mips_TRIPLE        "mipsel-linux-android")
-set(_ANDROID_ABI_mips64_PROC        "mips64")
-set(_ANDROID_ABI_mips64_ARCH        "mips64")
-set(_ANDROID_ABI_mips64_TRIPLE      "mips64el-linux-android")
-set(_ANDROID_ABI_x86_PROC           "i686")
-set(_ANDROID_ABI_x86_ARCH           "x86")
-set(_ANDROID_ABI_x86_TRIPLE         "i686-linux-android")
-set(_ANDROID_ABI_x86_64_PROC        "x86_64")
-set(_ANDROID_ABI_x86_64_ARCH        "x86_64")
-set(_ANDROID_ABI_x86_64_TRIPLE      "x86_64-linux-android")
-
-set(_ANDROID_PROC_aarch64_ARCH_ABI "arm64-v8a")
-set(_ANDROID_PROC_armv7-a_ARCH_ABI "armeabi-v7a")
-set(_ANDROID_PROC_armv6_ARCH_ABI   "armeabi-v6")
-set(_ANDROID_PROC_armv5te_ARCH_ABI "armeabi")
-set(_ANDROID_PROC_i686_ARCH_ABI    "x86")
-set(_ANDROID_PROC_mips_ARCH_ABI    "mips")
-set(_ANDROID_PROC_mips64_ARCH_ABI  "mips64")
-set(_ANDROID_PROC_x86_64_ARCH_ABI  "x86_64")
-
-set(_ANDROID_ARCH_arm64_ABI  "arm64-v8a")
-set(_ANDROID_ARCH_arm_ABI    "armeabi")
-set(_ANDROID_ARCH_mips_ABI   "mips")
-set(_ANDROID_ARCH_mips64_ABI "mips64")
-set(_ANDROID_ARCH_x86_ABI    "x86")
-set(_ANDROID_ARCH_x86_64_ABI "x86_64")
+if(NOT DEFINED NDK_KNOWN_DEVICE_ABIS)
+  # The NDK is not new enough to provide ABI information.
+  # https://developer.android.com/ndk/guides/abis.html
+
+  set(NDK_ABI_arm64-v8a_PROC           "aarch64")
+  set(NDK_ABI_arm64-v8a_ARCH           "arm64")
+  set(NDK_ABI_arm64-v8a_TRIPLE         "aarch64-linux-android")
+  set(NDK_ABI_arm64-v8a_LLVM_TRIPLE    "aarch64-none-linux-android")
+  set(NDK_ABI_armeabi-v7a_PROC         "armv7-a")
+  set(NDK_ABI_armeabi-v7a_ARCH         "arm")
+  set(NDK_ABI_armeabi-v7a_TRIPLE       "arm-linux-androideabi")
+  set(NDK_ABI_armeabi-v7a_LLVM_TRIPLE  "armv7-none-linux-androideabi")
+  set(NDK_ABI_armeabi-v6_PROC          "armv6")
+  set(NDK_ABI_armeabi-v6_ARCH          "arm")
+  set(NDK_ABI_armeabi-v6_TRIPLE        "arm-linux-androideabi")
+  set(NDK_ABI_armeabi-v6_LLVM_TRIPLE   "armv6-none-linux-androideabi")
+  set(NDK_ABI_armeabi_PROC             "armv5te")
+  set(NDK_ABI_armeabi_ARCH             "arm")
+  set(NDK_ABI_armeabi_TRIPLE           "arm-linux-androideabi")
+  set(NDK_ABI_armeabi_LLVM_TRIPLE      "armv5te-none-linux-androideabi")
+  set(NDK_ABI_mips_PROC                "mips")
+  set(NDK_ABI_mips_ARCH                "mips")
+  set(NDK_ABI_mips_TRIPLE              "mipsel-linux-android")
+  set(NDK_ABI_mips_LLVM_TRIPLE         "mipsel-none-linux-android")
+  set(NDK_ABI_mips64_PROC              "mips64")
+  set(NDK_ABI_mips64_ARCH              "mips64")
+  set(NDK_ABI_mips64_TRIPLE            "mips64el-linux-android")
+  set(NDK_ABI_mips64_LLVM_TRIPLE       "mips64el-none-linux-android")
+  set(NDK_ABI_x86_PROC                 "i686")
+  set(NDK_ABI_x86_ARCH                 "x86")
+  set(NDK_ABI_x86_TRIPLE               "i686-linux-android")
+  set(NDK_ABI_x86_LLVM_TRIPLE          "i686-none-linux-android")
+  set(NDK_ABI_x86_64_PROC              "x86_64")
+  set(NDK_ABI_x86_64_ARCH              "x86_64")
+  set(NDK_ABI_x86_64_TRIPLE            "x86_64-linux-android")
+  set(NDK_ABI_x86_64_LLVM_TRIPLE       "x86_64-none-linux-android")
+
+  set(NDK_PROC_aarch64_ABI "arm64-v8a")
+  set(NDK_PROC_armv7-a_ABI "armeabi-v7a")
+  set(NDK_PROC_armv6_ABI   "armeabi-v6")
+  set(NDK_PROC_armv5te_ABI "armeabi")
+  set(NDK_PROC_i686_ABI    "x86")
+  set(NDK_PROC_mips_ABI    "mips")
+  set(NDK_PROC_mips64_ABI  "mips64")
+  set(NDK_PROC_x86_64_ABI  "x86_64")
+
+  set(NDK_ARCH_arm64_ABI  "arm64-v8a")
+  set(NDK_ARCH_arm_ABI    "armeabi")
+  set(NDK_ARCH_mips_ABI   "mips")
+  set(NDK_ARCH_mips64_ABI "mips64")
+  set(NDK_ARCH_x86_ABI    "x86")
+  set(NDK_ARCH_x86_64_ABI "x86_64")
+endif()
 
 # Validate inputs.
-if(CMAKE_ANDROID_ARCH_ABI AND NOT DEFINED "_ANDROID_ABI_${CMAKE_ANDROID_ARCH_ABI}_PROC")
+if(CMAKE_ANDROID_ARCH_ABI AND NOT DEFINED "NDK_ABI_${CMAKE_ANDROID_ARCH_ABI}_PROC")
   message(FATAL_ERROR "Android: Unknown ABI CMAKE_ANDROID_ARCH_ABI='${CMAKE_ANDROID_ARCH_ABI}'.")
 endif()
-if(CMAKE_SYSTEM_PROCESSOR AND NOT DEFINED "_ANDROID_PROC_${CMAKE_SYSTEM_PROCESSOR}_ARCH_ABI")
+if(CMAKE_SYSTEM_PROCESSOR AND NOT DEFINED "NDK_PROC_${CMAKE_SYSTEM_PROCESSOR}_ABI")
   message(FATAL_ERROR "Android: Unknown processor CMAKE_SYSTEM_PROCESSOR='${CMAKE_SYSTEM_PROCESSOR}'.")
 endif()
-if(_ANDROID_SYSROOT_ARCH AND NOT DEFINED "_ANDROID_ARCH_${_ANDROID_SYSROOT_ARCH}_ABI")
+if(_ANDROID_SYSROOT_ARCH AND NOT DEFINED "NDK_ARCH_${_ANDROID_SYSROOT_ARCH}_ABI")
   message(FATAL_ERROR
     "Android: Unknown architecture '${_ANDROID_SYSROOT_ARCH}' specified in CMAKE_SYSROOT:\n"
     "  ${CMAKE_SYSROOT}"
@@ -310,9 +339,9 @@ endif()
 # Select an ABI.
 if(NOT CMAKE_ANDROID_ARCH_ABI)
   if(CMAKE_SYSTEM_PROCESSOR)
-    set(CMAKE_ANDROID_ARCH_ABI "${_ANDROID_PROC_${CMAKE_SYSTEM_PROCESSOR}_ARCH_ABI}")
+    set(CMAKE_ANDROID_ARCH_ABI "${NDK_PROC_${CMAKE_SYSTEM_PROCESSOR}_ABI}")
   elseif(_ANDROID_SYSROOT_ARCH)
-    set(CMAKE_ANDROID_ARCH_ABI "${_ANDROID_ARCH_${_ANDROID_SYSROOT_ARCH}_ABI}")
+    set(CMAKE_ANDROID_ARCH_ABI "${NDK_ARCH_${_ANDROID_SYSROOT_ARCH}_ABI}")
   elseif(_INCLUDED_ABIS)
     # Default to the oldest ARM ABI.
     foreach(abi armeabi armeabi-v7a arm64-v8a)
@@ -368,7 +397,7 @@ if(_INCLUDED_ABIS AND NOT CMAKE_ANDROID_ARCH_ABI IN_LIST _ANDROID_KNOWN_ABIS)
     "Supported ABIS: ${_ANDROID_KNOWN_ABIS}."
   )
 endif()
-set(CMAKE_ANDROID_ARCH "${_ANDROID_ABI_${CMAKE_ANDROID_ARCH_ABI}_ARCH}")
+set(CMAKE_ANDROID_ARCH "${NDK_ABI_${CMAKE_ANDROID_ARCH_ABI}_ARCH}")
 if(_ANDROID_SYSROOT_ARCH AND NOT "x${_ANDROID_SYSROOT_ARCH}" STREQUAL "x${CMAKE_ANDROID_ARCH}")
   message(FATAL_ERROR
     "Android: Architecture '${_ANDROID_SYSROOT_ARCH}' specified in CMAKE_SYSROOT:\n"
@@ -376,15 +405,17 @@ if(_ANDROID_SYSROOT_ARCH AND NOT "x${_ANDROID_SYSROOT_ARCH}" STREQUAL "x${CMAKE_
     "does not match architecture '${CMAKE_ANDROID_ARCH}' for the ABI '${CMAKE_ANDROID_ARCH_ABI}'."
     )
 endif()
-set(CMAKE_ANDROID_ARCH_TRIPLE "${_ANDROID_ABI_${CMAKE_ANDROID_ARCH_ABI}_TRIPLE}")
+set(CMAKE_ANDROID_ARCH_TRIPLE "${NDK_ABI_${CMAKE_ANDROID_ARCH_ABI}_TRIPLE}")
+set(CMAKE_ANDROID_ARCH_LLVM_TRIPLE
+    "${NDK_ABI_${CMAKE_ANDROID_ARCH_ABI}_LLVM_TRIPLE}")
 
 # Select a processor.
 if(NOT CMAKE_SYSTEM_PROCESSOR)
-  set(CMAKE_SYSTEM_PROCESSOR "${_ANDROID_ABI_${CMAKE_ANDROID_ARCH_ABI}_PROC}")
+  set(CMAKE_SYSTEM_PROCESSOR "${NDK_ABI_${CMAKE_ANDROID_ARCH_ABI}_PROC}")
 endif()
 
 # If the user specified both an ABI and a processor then they might not match.
-if(NOT _ANDROID_ABI_${CMAKE_ANDROID_ARCH_ABI}_PROC STREQUAL CMAKE_SYSTEM_PROCESSOR)
+if(NOT NDK_ABI_${CMAKE_ANDROID_ARCH_ABI}_PROC STREQUAL CMAKE_SYSTEM_PROCESSOR)
   message(FATAL_ERROR "Android: The specified CMAKE_ANDROID_ARCH_ABI='${CMAKE_ANDROID_ARCH_ABI}' and CMAKE_SYSTEM_PROCESSOR='${CMAKE_SYSTEM_PROCESSOR}' is not a valid combination.")
 endif()
 
@@ -491,6 +522,7 @@ set(CMAKE_ANDROID_ARCH_ABI \"${CMAKE_ANDROID_ARCH_ABI}\")
 if(CMAKE_ANDROID_NDK)
   string(APPEND CMAKE_SYSTEM_CUSTOM_CODE
     "set(CMAKE_ANDROID_ARCH_TRIPLE \"${CMAKE_ANDROID_ARCH_TRIPLE}\")\n"
+    "set(CMAKE_ANDROID_ARCH_LLVM_TRIPLE \"${CMAKE_ANDROID_ARCH_LLVM_TRIPLE}\")\n"
     "set(CMAKE_ANDROID_NDK_DEPRECATED_HEADERS \"${CMAKE_ANDROID_NDK_DEPRECATED_HEADERS}\")\n"
     "set(CMAKE_ANDROID_NDK_TOOLCHAIN_HOST_TAG \"${CMAKE_ANDROID_NDK_TOOLCHAIN_HOST_TAG}\")\n"
     "set(CMAKE_ANDROID_NDK_TOOLCHAIN_UNIFIED \"${CMAKE_ANDROID_NDK_TOOLCHAIN_UNIFIED}\")\n"
@@ -528,3 +560,9 @@ endif()
 message(STATUS "Android: Targeting API '${CMAKE_SYSTEM_VERSION}' with architecture '${CMAKE_ANDROID_ARCH}', ABI '${CMAKE_ANDROID_ARCH_ABI}', and processor '${CMAKE_SYSTEM_PROCESSOR}'")
 
 cmake_policy(POP)
+
+# Include the NDK hook.
+# It can be used by NDK to inject necessary fixes for an earlier cmake.
+if(CMAKE_ANDROID_NDK)
+  include(${CMAKE_ANDROID_NDK}/build/cmake/hooks/post/Android-Determine.cmake OPTIONAL)
+endif()
diff --git a/Modules/Platform/Android-Initialize.cmake b/Modules/Platform/Android-Initialize.cmake
index 5019c28..6116ae1 100644
--- a/Modules/Platform/Android-Initialize.cmake
+++ b/Modules/Platform/Android-Initialize.cmake
@@ -4,6 +4,12 @@
 # When CMAKE_SYSTEM_NAME is "Android", CMakeSystemSpecificInitialize loads this
 # module.
 
+# Include the NDK hook.
+# It can be used by NDK to inject necessary fixes for an earlier cmake.
+if(CMAKE_ANDROID_NDK)
+  include(${CMAKE_ANDROID_NDK}/build/cmake/hooks/pre/Android-Initialize.cmake OPTIONAL)
+endif()
+
 # Support for NVIDIA Nsight Tegra Visual Studio Edition was previously
 # implemented in the CMake VS IDE generators.  Avoid interfering with
 # that functionality for now.
@@ -17,7 +23,7 @@ if(CMAKE_SYSTEM_VERSION EQUAL 1)
   return()
 endif()
 
-set(CMAKE_BUILD_TYPE_INIT Debug)
+set(CMAKE_BUILD_TYPE_INIT "RelWithDebInfo")
 
 # Skip sysroot selection if the NDK has a unified toolchain.
 if(CMAKE_ANDROID_NDK_TOOLCHAIN_UNIFIED)
@@ -53,3 +59,9 @@ else()
     "Android: No CMAKE_SYSROOT was selected."
     )
 endif()
+
+# Include the NDK hook.
+# It can be used by NDK to inject necessary fixes for an earlier cmake.
+if(CMAKE_ANDROID_NDK)
+  include(${CMAKE_ANDROID_NDK}/build/cmake/hooks/post/Android-Initialize.cmake OPTIONAL)
+endif()
diff --git a/Modules/Platform/Android.cmake b/Modules/Platform/Android.cmake
index 8ffa1b2..e4b9a09 100644
--- a/Modules/Platform/Android.cmake
+++ b/Modules/Platform/Android.cmake
@@ -1,3 +1,9 @@
+# Include the NDK hook.
+# It can be used by NDK to inject necessary fixes for an earlier cmake.
+if(CMAKE_ANDROID_NDK)
+  include(${CMAKE_ANDROID_NDK}/build/cmake/hooks/pre/Android.cmake OPTIONAL)
+endif()
+
 include(Platform/Linux)
 
 set(ANDROID 1)
@@ -22,3 +28,65 @@ set(CMAKE_SHARED_LIBRARY_RUNTIME_C_FLAG "")
 if(CMAKE_VS_PLATFORM_NAME STREQUAL "Tegra-Android")
   set(CMAKE_LINK_LIBRARY_FLAG "")
 endif()
+
+# Commonly used Android toolchain files that pre-date CMake upstream support
+# set CMAKE_SYSTEM_VERSION to 1.  Avoid interfering with them.
+if(CMAKE_SYSTEM_VERSION EQUAL 1)
+  return()
+endif()
+
+if(CMAKE_ANDROID_NDK_TOOLCHAIN_UNIFIED)
+  # Tell CMake not to search host sysroots for headers/libraries.
+
+  # All paths added to CMAKE_SYSTEM_*_PATH below will be rerooted under
+  # CMAKE_FIND_ROOT_PATH. This is set because:
+  # 1. Users may structure their libraries in a way similar to NDK. When they do that,
+  #    they can simply append another path to CMAKE_FIND_ROOT_PATH.
+  # 2. CMAKE_FIND_ROOT_PATH must be non-empty for CMAKE_FIND_ROOT_PATH_MODE_* == ONLY
+  #    to be meaningful. https://github.com/android-ndk/ndk/issues/890
+  list(APPEND CMAKE_FIND_ROOT_PATH "${CMAKE_ANDROID_NDK_TOOLCHAIN_UNIFIED}/sysroot")
+
+  # Allow users to override these values in case they want more strict behaviors.
+  # For example, they may want to prevent the NDK's libz from being picked up so
+  # they can use their own.
+  # https://github.com/android-ndk/ndk/issues/517
+  if(NOT DEFINED CMAKE_FIND_ROOT_PATH_MODE_PROGRAM)
+    set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
+  endif()
+
+  if(NOT DEFINED CMAKE_FIND_ROOT_PATH_MODE_LIBRARY)
+    set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
+  endif()
+
+  if(NOT DEFINED CMAKE_FIND_ROOT_PATH_MODE_INCLUDE)
+    set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
+  endif()
+
+  if(NOT DEFINED CMAKE_FIND_ROOT_PATH_MODE_PACKAGE)
+    set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)
+  endif()
+
+  # Don't search paths in PATH environment variable.
+  if(NOT DEFINED CMAKE_FIND_USE_SYSTEM_ENVIRONMENT_PATH)
+    set(CMAKE_FIND_USE_SYSTEM_ENVIRONMENT_PATH OFF)
+  endif()
+
+  # Allows CMake to find headers in the architecture-specific include directories.
+  set(CMAKE_LIBRARY_ARCHITECTURE "${CMAKE_ANDROID_ARCH_TRIPLE}")
+
+  # Instructs CMake to search the correct API level for libraries.
+  # Besides the paths like <root>/<prefix>/lib/<arch>, cmake also searches <root>/<prefix>.
+  # So we can add the API level specific directory directly.
+  # https://github.com/android/ndk/issues/929
+  list(PREPEND CMAKE_SYSTEM_PREFIX_PATH
+    "/usr/lib/${CMAKE_LIBRARY_ARCHITECTURE}/${CMAKE_SYSTEM_VERSION}"
+    )
+
+  list(APPEND CMAKE_SYSTEM_PROGRAM_PATH "${CMAKE_ANDROID_NDK_TOOLCHAIN_UNIFIED}/bin")
+endif()
+
+# Include the NDK hook.
+# It can be used by NDK to inject necessary fixes for an earlier cmake.
+if(CMAKE_ANDROID_NDK)
+  include(${CMAKE_ANDROID_NDK}/build/cmake/hooks/post/Android.cmake OPTIONAL)
+endif()
diff --git a/Modules/Platform/Android/Determine-Compiler.cmake b/Modules/Platform/Android/Determine-Compiler.cmake
index f9c2d89..f8eae62 100644
--- a/Modules/Platform/Android/Determine-Compiler.cmake
+++ b/Modules/Platform/Android/Determine-Compiler.cmake
@@ -7,6 +7,12 @@ if(__ANDROID_DETERMINE_COMPILER)
 endif()
 set(__ANDROID_DETERMINE_COMPILER 1)
 
+# Include the NDK hook.
+# It can be used by NDK to inject necessary fixes for an earlier cmake.
+if(CMAKE_ANDROID_NDK)
+  include(${CMAKE_ANDROID_NDK}/build/cmake/hooks/pre/Determine-Compiler.cmake OPTIONAL)
+endif()
+
 # Support for NVIDIA Nsight Tegra Visual Studio Edition was previously
 # implemented in the CMake VS IDE generators.  Avoid interfering with
 # that functionality for now.  Later we may try to integrate this.
@@ -83,3 +89,9 @@ set(CMAKE_${lang}_ANDROID_TOOLCHAIN_SUFFIX \"${_ANDROID_TOOL_${lang}_TOOLCHAIN_S
 ")
   endif()
 endmacro()
+
+# Include the NDK hook.
+# It can be used by NDK to inject necessary fixes for an earlier cmake.
+if(CMAKE_ANDROID_NDK)
+  include(${CMAKE_ANDROID_NDK}/build/cmake/hooks/post/Determine-Compiler.cmake OPTIONAL)
+endif()
diff --git a/Modules/Platform/Android/abi-arm64-v8a-Clang.cmake b/Modules/Platform/Android/abi-arm64-v8a-Clang.cmake
index f4717d5..c18c0a2 100644
--- a/Modules/Platform/Android/abi-arm64-v8a-Clang.cmake
+++ b/Modules/Platform/Android/abi-arm64-v8a-Clang.cmake
@@ -1,6 +1,3 @@
-# <ndk>/build/core/toolchains/aarch64-linux-android-clang/setup.mk
-set(_ANDROID_ABI_CLANG_TARGET "aarch64-none-linux-android")
-
 # Suppress -Wl,-z,nocopyreloc flag on arm64-v8a
 set(_ANDROID_ABI_INIT_EXE_LDFLAGS_NO_nocopyreloc 1)
 
diff --git a/Modules/Platform/Android/abi-armeabi-Clang.cmake b/Modules/Platform/Android/abi-armeabi-Clang.cmake
index b857bd3..2b1de03 100644
--- a/Modules/Platform/Android/abi-armeabi-Clang.cmake
+++ b/Modules/Platform/Android/abi-armeabi-Clang.cmake
@@ -1,6 +1,3 @@
-# <ndk>/build/core/toolchains/arm-linux-androideabi-clang/setup.mk
-set(_ANDROID_ABI_CLANG_TARGET "armv5te-none-linux-androideabi")
-
 string(APPEND _ANDROID_ABI_INIT_CFLAGS
   " -march=armv5te"
   )
diff --git a/Modules/Platform/Android/abi-armeabi-v6-Clang.cmake b/Modules/Platform/Android/abi-armeabi-v6-Clang.cmake
index a7412f5..bb176ae 100644
--- a/Modules/Platform/Android/abi-armeabi-v6-Clang.cmake
+++ b/Modules/Platform/Android/abi-armeabi-v6-Clang.cmake
@@ -1,6 +1,3 @@
-# <ndk>/build/core/toolchains/arm-linux-androideabi-clang/setup.mk
-set(_ANDROID_ABI_CLANG_TARGET "armv6-none-linux-androideabi")
-
 string(APPEND _ANDROID_ABI_INIT_CFLAGS
   " -march=armv6"
   )
diff --git a/Modules/Platform/Android/abi-armeabi-v7a-Clang.cmake b/Modules/Platform/Android/abi-armeabi-v7a-Clang.cmake
index e2ab58b..6feeef6 100644
--- a/Modules/Platform/Android/abi-armeabi-v7a-Clang.cmake
+++ b/Modules/Platform/Android/abi-armeabi-v7a-Clang.cmake
@@ -1,6 +1,3 @@
-# <ndk>/build/core/toolchains/arm-linux-androideabi-clang/setup.mk
-set(_ANDROID_ABI_CLANG_TARGET "armv7-none-linux-androideabi")
-
 string(APPEND _ANDROID_ABI_INIT_CFLAGS
   " -march=armv7-a"
   )
diff --git a/Modules/Platform/Android/abi-mips-Clang.cmake b/Modules/Platform/Android/abi-mips-Clang.cmake
index 73addde..7df6a36 100644
--- a/Modules/Platform/Android/abi-mips-Clang.cmake
+++ b/Modules/Platform/Android/abi-mips-Clang.cmake
@@ -1,4 +1 @@
-# <ndk>/build/core/toolchains/mipsel-linux-android-clang/setup.mk
-set(_ANDROID_ABI_CLANG_TARGET "mipsel-none-linux-android")
-
 include(Platform/Android/abi-common-Clang)
diff --git a/Modules/Platform/Android/abi-mips64-Clang.cmake b/Modules/Platform/Android/abi-mips64-Clang.cmake
index 603f1b2..7df6a36 100644
--- a/Modules/Platform/Android/abi-mips64-Clang.cmake
+++ b/Modules/Platform/Android/abi-mips64-Clang.cmake
@@ -1,4 +1 @@
-# <ndk>/build/core/toolchains/mips64el-linux-android-clang/setup.mk
-set(_ANDROID_ABI_CLANG_TARGET "mips64el-none-linux-android")
-
 include(Platform/Android/abi-common-Clang)
diff --git a/Modules/Platform/Android/abi-x86-Clang.cmake b/Modules/Platform/Android/abi-x86-Clang.cmake
index fe7eace..7df6a36 100644
--- a/Modules/Platform/Android/abi-x86-Clang.cmake
+++ b/Modules/Platform/Android/abi-x86-Clang.cmake
@@ -1,4 +1 @@
-# <ndk>/build/core/toolchains/x86-clang/setup.mk
-set(_ANDROID_ABI_CLANG_TARGET "i686-none-linux-android")
-
 include(Platform/Android/abi-common-Clang)
diff --git a/Modules/Platform/Android/abi-x86_64-Clang.cmake b/Modules/Platform/Android/abi-x86_64-Clang.cmake
index 3cbcd49..7df6a36 100644
--- a/Modules/Platform/Android/abi-x86_64-Clang.cmake
+++ b/Modules/Platform/Android/abi-x86_64-Clang.cmake
@@ -1,4 +1 @@
-# <ndk>/build/core/toolchains/x86_64-clang/setup.mk
-set(_ANDROID_ABI_CLANG_TARGET "x86_64-none-linux-android")
-
 include(Platform/Android/abi-common-Clang)
diff --git a/Modules/Platform/Windows-Clang-C.cmake b/Modules/Platform/Windows-Clang-C.cmake
index d007105..322e3fb 100644
--- a/Modules/Platform/Windows-Clang-C.cmake
+++ b/Modules/Platform/Windows-Clang-C.cmake
@@ -1,2 +1,18 @@
 include(Platform/Windows-Clang)
 __windows_compiler_clang(C)
+
+if("x${MAKE_C_COMPILER_FRONTEND_VARIANT}" STREQUAL "xMSVC")
+  if((NOT DEFINED CMAKE_DEPENDS_USE_COMPILER OR CMAKE_DEPENDS_USE_COMPILER)
+      AND CMAKE_GENERATOR MATCHES "Makefiles|WMake"
+      AND CMAKE_DEPFILE_FLAGS_C)
+    set(CMAKE_C_DEPENDS_USE_COMPILER TRUE)
+  endif()
+elseif("x${CMAKE_C_COMPILER_FRONTEND_VARIANT}" STREQUAL "xGNU")
+  if((NOT DEFINED CMAKE_DEPENDS_USE_COMPILER OR CMAKE_DEPENDS_USE_COMPILER)
+      AND CMAKE_GENERATOR MATCHES "Makefiles|WMake"
+      AND CMAKE_DEPFILE_FLAGS_C)
+    # dependencies are computed by the compiler itself
+    set(CMAKE_C_DEPFILE_FORMAT gcc)
+    set(CMAKE_C_DEPENDS_USE_COMPILER TRUE)
+  endif()
+endif()
diff --git a/Modules/Platform/Windows-Clang-CXX.cmake b/Modules/Platform/Windows-Clang-CXX.cmake
index f1d40f2..b4aaf1e 100644
--- a/Modules/Platform/Windows-Clang-CXX.cmake
+++ b/Modules/Platform/Windows-Clang-CXX.cmake
@@ -1,3 +1,19 @@
 include(Platform/Windows-Clang)
 set(_COMPILE_CXX_MSVC " -TP")
 __windows_compiler_clang(CXX)
+
+if("x${MAKE_CXX_COMPILER_FRONTEND_VARIANT}" STREQUAL "xMSVC")
+  if((NOT DEFINED CMAKE_DEPENDS_USE_COMPILER OR CMAKE_DEPENDS_USE_COMPILER)
+      AND CMAKE_GENERATOR MATCHES "Makefiles|WMake"
+      AND CMAKE_DEPFILE_FLAGS_CXX)
+    set(CMAKE_CXX_DEPENDS_USE_COMPILER TRUE)
+  endif()
+elseif("x${CMAKE_CXX_COMPILER_FRONTEND_VARIANT}" STREQUAL "xGNU")
+  if((NOT DEFINED CMAKE_DEPENDS_USE_COMPILER OR CMAKE_DEPENDS_USE_COMPILER)
+      AND CMAKE_GENERATOR MATCHES "Makefiles|WMake"
+      AND CMAKE_DEPFILE_FLAGS_CXX)
+    # dependencies are computed by the compiler itself
+    set(CMAKE_CXX_DEPFILE_FORMAT gcc)
+    set(CMAKE_CXX_DEPENDS_USE_COMPILER TRUE)
+  endif()
+endif()
diff --git a/Modules/Platform/Windows-Clang.cmake b/Modules/Platform/Windows-Clang.cmake
index 389d6ab..51e9e81 100644
--- a/Modules/Platform/Windows-Clang.cmake
+++ b/Modules/Platform/Windows-Clang.cmake
@@ -27,7 +27,7 @@ macro(__windows_compiler_clang_gnu lang)
   set(CMAKE_SHARED_MODULE_SUFFIX  ".dll")
   set(CMAKE_STATIC_LIBRARY_SUFFIX ".lib")
   if(NOT "${lang}" STREQUAL "ASM")
-    set(CMAKE_DEPFILE_FLAGS_${lang} "-MD -MT <OBJECT> -MF <DEPFILE>")
+    set(CMAKE_DEPFILE_FLAGS_${lang} "-MD -MT <DEP_TARGET> -MF <DEP_FILE>")
   endif()
 
   set(CMAKE_FIND_LIBRARY_PREFIXES "lib" "")
@@ -114,8 +114,10 @@ macro(__enable_llvm_rc_preprocessing clang_option_prefix extra_pp_flags)
       set(CMAKE_RC_PREPROCESSOR CMAKE_CXX_COMPILER)
     endif()
     if(DEFINED CMAKE_RC_PREPROCESSOR)
-      set(CMAKE_DEPFILE_FLAGS_RC "${clang_option_prefix}-MD ${clang_option_prefix}-MF ${clang_option_prefix}<DEPFILE>")
-      set(CMAKE_RC_COMPILE_OBJECT "<CMAKE_COMMAND> -E cmake_llvm_rc <SOURCE> <OBJECT>.pp <${CMAKE_RC_PREPROCESSOR}> <DEFINES> -DRC_INVOKED <INCLUDES> <FLAGS> ${extra_pp_flags} -E -- <SOURCE> ++ <CMAKE_RC_COMPILER> <DEFINES> -I <SOURCE_DIR> <INCLUDES> /fo <OBJECT> <OBJECT>.pp")
+      set(CMAKE_DEPFILE_FLAGS_RC "${clang_option_prefix}-MD ${clang_option_prefix}-MF ${clang_option_prefix}<DEP_FILE>")
+      # The <FLAGS> are passed to the preprocess and the resource compiler to pick
+      # up the eventual -D / -C options passed through the CMAKE_RC_FLAGS.
+      set(CMAKE_RC_COMPILE_OBJECT "<CMAKE_COMMAND> -E cmake_llvm_rc <SOURCE> <OBJECT>.pp <${CMAKE_RC_PREPROCESSOR}> <DEFINES> -DRC_INVOKED <INCLUDES> <FLAGS> ${extra_pp_flags} -E -- <SOURCE> ++ <CMAKE_RC_COMPILER> <DEFINES> -I <SOURCE_DIR> <INCLUDES> <FLAGS> /fo <OBJECT> <OBJECT>.pp")
       if(CMAKE_GENERATOR MATCHES "Ninja")
         set(CMAKE_NINJA_CMCLDEPS_RC 0)
         set(CMAKE_NINJA_DEP_TYPE_RC gcc)
diff --git a/Modules/Platform/Windows-Intel-C.cmake b/Modules/Platform/Windows-Intel-C.cmake
index 06d8f50..3cbc7a5 100644
--- a/Modules/Platform/Windows-Intel-C.cmake
+++ b/Modules/Platform/Windows-Intel-C.cmake
@@ -1,4 +1,11 @@
 include(Platform/Windows-Intel)
 __windows_compiler_intel(C)
 set(CMAKE_NINJA_DEPTYPE_C intel) # special value handled by CMake
-set(CMAKE_DEPFILE_FLAGS_C "-QMMD -QMT <OBJECT> -QMF <DEPFILE>")
+set(CMAKE_DEPFILE_FLAGS_C "-QMMD -QMT <DEP_TARGET> -QMF <DEP_FILE>")
+
+if((NOT DEFINED CMAKE_DEPENDS_USE_COMPILER OR CMAKE_DEPENDS_USE_COMPILER)
+    AND CMAKE_GENERATOR MATCHES "Makefiles|WMake")
+  # dependencies are computed by the compiler itself
+  set(CMAKE_C_DEPFILE_FORMAT gcc)
+  set(CMAKE_C_DEPENDS_USE_COMPILER TRUE)
+endif()
diff --git a/Modules/Platform/Windows-Intel-CXX.cmake b/Modules/Platform/Windows-Intel-CXX.cmake
index 666de6e..6539f64 100644
--- a/Modules/Platform/Windows-Intel-CXX.cmake
+++ b/Modules/Platform/Windows-Intel-CXX.cmake
@@ -2,4 +2,11 @@ include(Platform/Windows-Intel)
 set(_COMPILE_CXX " /TP")
 __windows_compiler_intel(CXX)
 set(CMAKE_NINJA_DEPTYPE_CXX intel) # special value handled by CMake
-set(CMAKE_DEPFILE_FLAGS_CXX "-QMMD -QMT <OBJECT> -QMF <DEPFILE>")
+set(CMAKE_DEPFILE_FLAGS_CXX "-QMMD -QMT <DEP_TARGET> -QMF <DEP_FILE>")
+
+if((NOT DEFINED CMAKE_DEPENDS_USE_COMPILER OR CMAKE_DEPENDS_USE_COMPILER)
+    AND CMAKE_GENERATOR MATCHES "Makefiles|WMake")
+  # dependencies are computed by the compiler itself
+  set(CMAKE_CXX_DEPFILE_FORMAT gcc)
+  set(CMAKE_CXX_DEPENDS_USE_COMPILER TRUE)
+endif()
diff --git a/Modules/Platform/Windows-MSVC-C.cmake b/Modules/Platform/Windows-MSVC-C.cmake
index cbe1586..67b6827 100644
--- a/Modules/Platform/Windows-MSVC-C.cmake
+++ b/Modules/Platform/Windows-MSVC-C.cmake
@@ -3,3 +3,10 @@ if(NOT CMAKE_C_COMPILER_VERSION VERSION_LESS 18.0)
   set(_FS_C " /FS")
 endif()
 __windows_compiler_msvc(C)
+
+if((NOT DEFINED CMAKE_DEPENDS_USE_COMPILER OR CMAKE_DEPENDS_USE_COMPILER)
+    AND CMAKE_GENERATOR MATCHES "Makefiles|WMake"
+    AND CMAKE_DEPFILE_FLAGS_C)
+  # dependencies are computed by the compiler itself
+  set(CMAKE_C_DEPENDS_USE_COMPILER TRUE)
+endif()
diff --git a/Modules/Platform/Windows-MSVC-CXX.cmake b/Modules/Platform/Windows-MSVC-CXX.cmake
index 0e85005..6fea617 100644
--- a/Modules/Platform/Windows-MSVC-CXX.cmake
+++ b/Modules/Platform/Windows-MSVC-CXX.cmake
@@ -4,3 +4,10 @@ if(NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 18.0)
   set(_FS_CXX " /FS")
 endif()
 __windows_compiler_msvc(CXX)
+
+if((NOT DEFINED CMAKE_DEPENDS_USE_COMPILER OR CMAKE_DEPENDS_USE_COMPILER)
+    AND CMAKE_GENERATOR MATCHES "Makefiles|WMake"
+    AND CMAKE_DEPFILE_FLAGS_CXX)
+  # dependencies are computed by the compiler itself
+  set(CMAKE_CXX_DEPENDS_USE_COMPILER TRUE)
+endif()
diff --git a/Modules/Platform/Windows-MSVC.cmake b/Modules/Platform/Windows-MSVC.cmake
index bd08718..ec5758c 100644
--- a/Modules/Platform/Windows-MSVC.cmake
+++ b/Modules/Platform/Windows-MSVC.cmake
@@ -163,6 +163,14 @@ foreach(lang C CXX)
   endif()
 endforeach()
 
+cmake_policy(GET CMP0117 __WINDOWS_MSVC_CMP0117)
+if(__WINDOWS_MSVC_CMP0117 STREQUAL "NEW")
+  set(_GR "")
+else()
+  set(_GR " /GR")
+endif()
+unset(__WINDOWS_MSVC_CMP0117)
+
 if(WINCE)
   foreach(lang C CXX)
     string(TOUPPER "${_MSVC_${lang}_ARCHITECTURE_FAMILY}" _MSVC_${lang}_ARCHITECTURE_FAMILY_UPPER)
@@ -182,7 +190,7 @@ if(WINCE)
 
   set(_RTC1 "")
   set(_FLAGS_C "")
-  set(_FLAGS_CXX " /GR /EHsc")
+  set(_FLAGS_CXX "${_GR} /EHsc")
 
   foreach(lang C CXX)
     if(_MSVC_${lang}_ARCHITECTURE_FAMILY STREQUAL "ARM")
@@ -204,7 +212,7 @@ if(WINCE)
 elseif(WINDOWS_PHONE OR WINDOWS_STORE)
   set(_PLATFORM_DEFINES "/DWIN32")
   set(_FLAGS_C " /DUNICODE /D_UNICODE")
-  set(_FLAGS_CXX " /DUNICODE /D_UNICODE /GR /EHsc")
+  set(_FLAGS_CXX " /DUNICODE /D_UNICODE${_GR} /EHsc")
   if(WINDOWS_STORE AND MSVC_VERSION GREATER 1899)
     set(CMAKE_C_STANDARD_LIBRARIES_INIT "WindowsApp.lib")
   elseif(WINDOWS_PHONE)
@@ -226,12 +234,12 @@ else()
       set(_FLAGS_CXX " -frtti -fexceptions")
     else()
       set(_RTC1 "/RTC1")
-      set(_FLAGS_CXX " /GR /EHsc")
+      set(_FLAGS_CXX "${_GR} /EHsc")
     endif()
     set(CMAKE_C_STANDARD_LIBRARIES_INIT "kernel32.lib user32.lib gdi32.lib winspool.lib shell32.lib ole32.lib oleaut32.lib uuid.lib comdlg32.lib advapi32.lib")
   else()
     set(_RTC1 "/GZ")
-    set(_FLAGS_CXX " /GR /GX")
+    set(_FLAGS_CXX "${_GR} /GX")
     set(CMAKE_C_STANDARD_LIBRARIES_INIT "kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib")
   endif()
 
@@ -241,6 +249,8 @@ else()
   endif()
 endif()
 
+unset(_GR)
+
 set(CMAKE_CXX_STANDARD_LIBRARIES_INIT "${CMAKE_C_STANDARD_LIBRARIES_INIT}")
 
 # executable linker flags
@@ -427,6 +437,13 @@ macro(__windows_compiler_msvc lang)
   set(CMAKE_${lang}_LINKER_SUPPORTS_PDB ON)
   set(CMAKE_NINJA_DEPTYPE_${lang} msvc)
   __windows_compiler_msvc_enable_rc("${_PLATFORM_DEFINES} ${_PLATFORM_DEFINES_${lang}}")
+
+  # define generic information about compiler dependencies
+  # activation is done on per language platform configuration basis
+  if (MSVC_VERSION GREATER 1300)
+    set(CMAKE_DEPFILE_FLAGS_${lang} "/showIncludes")
+    set(CMAKE_${lang}_DEPFILE_FORMAT msvc)
+  endif()
 endmacro()
 
 macro(__windows_compiler_msvc_enable_rc flags)