[Commit-gnuradio] [gnuradio] 02/12: android: cmake: adding toolchain file for building.

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trondeau pushed a commit to branch android
in repository gnuradio.

commit 443179557897ad6d2e70919aca1049560a877c1b
Author: Tom Rondeau <address@hidden>
Date:   Thu Mar 12 12:43:39 2015 -0400

    android: cmake: adding toolchain file for building.
    
    Prioritize ANDROID_STANDALONE_TOOLCHAIN over ANDROID_NDK.
---
 cmake/Toolchains/AndroidToolchain.cmake | 1453 +++++++++++++++++++++++++++++++
 1 file changed, 1453 insertions(+)

diff --git a/cmake/Toolchains/AndroidToolchain.cmake 
b/cmake/Toolchains/AndroidToolchain.cmake
new file mode 100644
index 0000000..bbbb50b
--- /dev/null
+++ b/cmake/Toolchains/AndroidToolchain.cmake
@@ -0,0 +1,1453 @@
+# 
------------------------------------------------------------------------------
+#  Android CMake toolchain file, for use with the Android NDK r8e
+#  Based on original android cmake toolchain from:
+#  
http://code.opencv.org/projects/opencv/repository/revisions/master/entry/platforms/android/android.toolchain.cmake
+#  Modified by Douglas Geiger <address@hidden>
+#  Requires cmake 2.6.3 or newer (2.8.5 or newer is recommended).
+
+cmake_minimum_required( VERSION 2.6.3 )
+if( CMAKE_TOOLCHAIN_FILE )
+ # touch toolchain variable only to suppress "unused variable" warning
+endif()
+# this one is important
+set( CMAKE_SYSTEM_NAME Linux )
+# this one not so much
+set( CMAKE_SYSTEM_VERSION 1 )
+
+# rpath makes low sense for Android
+set( CMAKE_SKIP_RPATH TRUE CACHE BOOL "If set, runtime paths are not added 
when using shared libraries." )
+
+set( ANDROID_SUPPORTED_NDK_VERSIONS ${ANDROID_EXTRA_NDK_VERSIONS} -r8e -r10d 
"" )
+set( ANDROID_SUPPORTED_ABIS_arm "armeabi-v7a;armeabi;armeabi-v7a with 
NEON;armeabi-v7a with VFPV3;armeabi-v6 with VFP" )
+set( ANDROID_SUPPORTED_ABIS_x86 "x86" )
+set( ANDROID_SUPPORTED_ABIS_mipsel "mips" )
+
+set( ANDROID_DEFAULT_NDK_API_LEVEL 21 )
+set( ANDROID_DEFAULT_NDK_API_LEVEL_x86 14 )
+set( ANDROID_DEFAULT_NDK_API_LEVEL_mips 14 )
+set( ANDROID_SUPPORTED_ABIS_arm "armeabi-v7a;armeabi;armeabi-v7a with 
NEON;armeabi-v7a with VFPV3;armeabi-v6 with VFP" )
+set( ANDROID_SUPPORTED_ABIS_x86 "x86" )
+set( ANDROID_SUPPORTED_ABIS_mipsel "mips" )
+
+macro( __LIST_FILTER listvar regex )
+ if( ${listvar} )
+  foreach( __val ${${listvar}} )
+   if( __val MATCHES "${regex}" )
+    list( REMOVE_ITEM ${listvar} "${__val}" )
+   endif()
+  endforeach()
+ endif()
+endmacro()
+
+macro( __INIT_VARIABLE var_name )
+ set( __test_path 0 )
+ foreach( __var ${ARGN} )
+  if( __var STREQUAL "PATH" )
+   set( __test_path 1 )
+   break()
+  endif()
+ endforeach()
+ if( __test_path AND NOT EXISTS "${${var_name}}" )
+  unset( ${var_name} CACHE )
+ endif()
+ if( "${${var_name}}" STREQUAL "" )
+  set( __values 0 )
+  foreach( __var ${ARGN} )
+   if( __var STREQUAL "VALUES" )
+    set( __values 1 )
+   elseif( NOT __var STREQUAL "PATH" )
+    set( __obsolete 0 )
+    if( __var MATCHES "^OBSOLETE_.*$" )
+     string( REPLACE "OBSOLETE_" "" __var "${__var}" )
+     set( __obsolete 1 )
+    endif()
+    if( __var MATCHES "^ENV_.*$" )
+     string( REPLACE "ENV_" "" __var "${__var}" )
+     set( __value "$ENV{${__var}}" )
+    elseif( DEFINED ${__var} )
+     set( __value "${${__var}}" )
+    else()
+     if( __values )
+      set( __value "${__var}" )
+     else()
+      set( __value "" )
+     endif()
+    endif()
+    if( NOT "${__value}" STREQUAL "" )
+     if( __test_path )
+      if( EXISTS "${__value}" )
+       file( TO_CMAKE_PATH "${__value}" ${var_name} )
+       if( __obsolete AND NOT _CMAKE_IN_TRY_COMPILE )
+        message( WARNING "Using value of obsolete variable ${__var} as initial 
value for ${var_name}. Please note, that ${__var} can be completely removed in 
future versions of the toolchain." )
+       endif()
+       break()
+      endif()
+     else()
+      set( ${var_name} "${__value}" )
+       if( __obsolete AND NOT _CMAKE_IN_TRY_COMPILE )
+        message( WARNING "Using value of obsolete variable ${__var} as initial 
value for ${var_name}. Please note, that ${__var} can be completely removed in 
future versions of the toolchain." )
+       endif()
+      break()
+     endif()
+    endif()
+   endif()
+  endforeach()
+  unset( __value )
+  unset( __values )
+  unset( __obsolete )
+ elseif( __test_path )
+  file( TO_CMAKE_PATH "${${var_name}}" ${var_name} )
+ endif()
+ unset( __test_path )
+endmacro()
+
+macro( __DETECT_NATIVE_API_LEVEL _var _path )
+ SET( __ndkApiLevelRegex "^[\t ]*#define[\t ]+__ANDROID_API__[\t ]+([0-9]+)[\t 
]*$" )
+ FILE( STRINGS ${_path} __apiFileContent REGEX "${__ndkApiLevelRegex}" )
+ if( NOT __apiFileContent )
+  message( SEND_ERROR "Could not get Android native API level. Probably you 
have specified invalid level value, or your copy of NDK/toolchain is broken." )
+ endif()
+ string( REGEX REPLACE "${__ndkApiLevelRegex}" "\\1" ${_var} 
"${__apiFileContent}" )
+ unset( __apiFileContent )
+ unset( __ndkApiLevelRegex )
+endmacro()
+
+macro( __DETECT_TOOLCHAIN_MACHINE_NAME _var _root )
+ if( EXISTS "${_root}" )
+  file( GLOB __gccExePath RELATIVE "${_root}/bin/" 
"${_root}/bin/*-gcc${TOOL_OS_SUFFIX}" )
+  __LIST_FILTER( __gccExePath "^[.].*" )
+  list( LENGTH __gccExePath __gccExePathsCount )
+  if( NOT __gccExePathsCount EQUAL 1  AND NOT _CMAKE_IN_TRY_COMPILE )
+   message( WARNING "Could not determine machine name for compiler from 
${_root}" )
+   set( ${_var} "" )
+  else()
+   get_filename_component( __gccExeName "${__gccExePath}" NAME_WE )
+   string( REPLACE "-gcc" "" ${_var} "${__gccExeName}" )
+  endif()
+  unset( __gccExePath )
+  unset( __gccExePathsCount )
+  unset( __gccExeName )
+ else()
+  set( ${_var} "" )
+ endif()
+endmacro()
+
+
+# fight against cygwin
+set( ANDROID_FORBID_SYGWIN TRUE CACHE BOOL "Prevent cmake from working under 
cygwin and using cygwin tools")
+mark_as_advanced( ANDROID_FORBID_SYGWIN )
+if( ANDROID_FORBID_SYGWIN )
+ if( CYGWIN )
+  message( FATAL_ERROR "Android NDK and android-cmake toolchain are not 
welcome Cygwin. It is unlikely that this cmake toolchain will work under 
cygwin. But if you want to try then you can set cmake variable 
ANDROID_FORBID_SYGWIN to FALSE and rerun cmake." )
+ endif()
+
+ if( CMAKE_HOST_WIN32 )
+  # remove cygwin from PATH
+  set( __new_path "$ENV{PATH}")
+  __LIST_FILTER( __new_path "cygwin" )
+  set(ENV{PATH} "${__new_path}")
+  unset(__new_path)
+ endif()
+endif()
+
+
+# detect current host platform
+if( NOT DEFINED ANDROID_NDK_HOST_X64 AND (CMAKE_HOST_SYSTEM_PROCESSOR MATCHES 
"amd64|x86_64|AMD64" OR CMAKE_HOST_APPLE) )
+ set( ANDROID_NDK_HOST_X64 1 CACHE BOOL "Try to use 64-bit compiler toolchain" 
)
+ mark_as_advanced( ANDROID_NDK_HOST_X64 )
+endif()
+
+set( TOOL_OS_SUFFIX "" )
+if( CMAKE_HOST_APPLE )
+ set( ANDROID_NDK_HOST_SYSTEM_NAME "darwin-x86_64" )
+ set( ANDROID_NDK_HOST_SYSTEM_NAME2 "darwin-x86" )
+elseif( CMAKE_HOST_WIN32 )
+ set( ANDROID_NDK_HOST_SYSTEM_NAME "windows-x86_64" )
+ set( ANDROID_NDK_HOST_SYSTEM_NAME2 "windows" )
+ set( TOOL_OS_SUFFIX ".exe" )
+elseif( CMAKE_HOST_UNIX )
+ set( ANDROID_NDK_HOST_SYSTEM_NAME "linux-x86_64" )
+ set( ANDROID_NDK_HOST_SYSTEM_NAME2 "linux-x86" )
+else()
+ message( FATAL_ERROR "Cross-compilation on your platform is not supported by 
this cmake toolchain" )
+endif()
+
+if( NOT ANDROID_NDK_HOST_X64 )
+ set( ANDROID_NDK_HOST_SYSTEM_NAME ${ANDROID_NDK_HOST_SYSTEM_NAME2} )
+endif()
+
+# see if we have path to Android NDK
+__INIT_VARIABLE( ANDROID_NDK PATH ENV_ANDROID_NDK )
+
+# see if we have path to Android standalone toolchain
+ __INIT_VARIABLE( ANDROID_STANDALONE_TOOLCHAIN PATH 
ENV_ANDROID_STANDALONE_TOOLCHAIN OBSOLETE_ANDROID_NDK_TOOLCHAIN_ROOT 
OBSOLETE_ENV_ANDROID_NDK_TOOLCHAIN_ROOT )
+
+if( NOT ANDROID_NDK )
+ if( NOT ANDROID_STANDALONE_TOOLCHAIN )
+  #try to find Android NDK in one of the the default locations
+  set( __ndkSearchPaths )
+  foreach( __ndkSearchPath ${ANDROID_NDK_SEARCH_PATHS} )
+   foreach( suffix ${ANDROID_SUPPORTED_NDK_VERSIONS} )
+    list( APPEND __ndkSearchPaths "${__ndkSearchPath}${suffix}" )
+   endforeach()
+  endforeach()
+  __INIT_VARIABLE( ANDROID_NDK PATH VALUES ${__ndkSearchPaths} )
+  unset( __ndkSearchPaths )
+
+  if( ANDROID_NDK )
+   message( STATUS "Using default path for Android NDK: ${ANDROID_NDK}" )
+   message( STATUS "  If you prefer to use a different location, please define 
a cmake or environment variable: ANDROID_NDK" )
+  else()
+   #try to find Android standalone toolchain in one of the the default 
locations
+   __INIT_VARIABLE( ANDROID_STANDALONE_TOOLCHAIN PATH 
ANDROID_STANDALONE_TOOLCHAIN_SEARCH_PATH )
+
+   if( ANDROID_STANDALONE_TOOLCHAIN )
+    message( STATUS "Using default path for standalone toolchain 
${ANDROID_STANDALONE_TOOLCHAIN}" )
+    message( STATUS "  If you prefer to use a different location, please 
define the variable: ANDROID_STANDALONE_TOOLCHAIN" )
+   endif( ANDROID_STANDALONE_TOOLCHAIN )
+  endif( ANDROID_NDK )
+ endif( NOT ANDROID_STANDALONE_TOOLCHAIN )
+endif( NOT ANDROID_NDK )
+
+# remember found paths
+if( ANDROID_STANDALONE_TOOLCHAIN )
+ get_filename_component( ANDROID_STANDALONE_TOOLCHAIN 
"${ANDROID_STANDALONE_TOOLCHAIN}" ABSOLUTE )
+ # try to detect change
+ if( CMAKE_AR )
+  string( LENGTH "${ANDROID_STANDALONE_TOOLCHAIN}" __length )
+  string( SUBSTRING "${CMAKE_AR}" 0 ${__length} 
__androidStandaloneToolchainPreviousPath )
+  if( NOT __androidStandaloneToolchainPreviousPath STREQUAL 
ANDROID_STANDALONE_TOOLCHAIN )
+   message( FATAL_ERROR "It is not possible to change path to the Android 
standalone toolchain on subsequent run." )
+  endif()
+  unset( __androidStandaloneToolchainPreviousPath )
+  unset( __length )
+ endif()
+ set( ANDROID_STANDALONE_TOOLCHAIN "${ANDROID_STANDALONE_TOOLCHAIN}" CACHE 
INTERNAL "Path of the Android standalone toolchain" FORCE )
+ set( BUILD_WITH_STANDALONE_TOOLCHAIN True )
+elseif( ANDROID_NDK )
+ get_filename_component( ANDROID_NDK "${ANDROID_NDK}" ABSOLUTE )
+ set( ANDROID_NDK "${ANDROID_NDK}" CACHE INTERNAL "Path of the Android NDK" 
FORCE )
+ set( BUILD_WITH_ANDROID_NDK True )
+ if( EXISTS "${ANDROID_NDK}/RELEASE.TXT" )
+  file( STRINGS "${ANDROID_NDK}/RELEASE.TXT" ANDROID_NDK_RELEASE_FULL 
LIMIT_COUNT 1 REGEX r[0-9]+[a-z]? )
+  string( REGEX MATCH r[0-9]+[a-z]? ANDROID_NDK_RELEASE 
"${ANDROID_NDK_RELEASE_FULL}" )
+ else()
+  set( ANDROID_NDK_RELEASE "r1x" )
+  set( ANDROID_NDK_RELEASE_FULL "unreleased" )
+ endif()
+else()
+ list(GET ANDROID_NDK_SEARCH_PATHS 0 ANDROID_NDK_SEARCH_PATH)
+ message( FATAL_ERROR "Could not find neither Android NDK nor Android 
standalone toolchain.
+    You should either set an environment variable:
+      export ANDROID_NDK=~/my-android-ndk
+    or
+      export ANDROID_STANDALONE_TOOLCHAIN=~/my-android-toolchain
+    or put the toolchain or NDK in the default path:
+      sudo ln -s ~/my-android-ndk ${ANDROID_NDK_SEARCH_PATH}
+      sudo ln -s ~/my-android-toolchain 
${ANDROID_STANDALONE_TOOLCHAIN_SEARCH_PATH}" )
+endif()
+
+# android NDK layout
+if( BUILD_WITH_ANDROID_NDK )
+ if( NOT DEFINED ANDROID_NDK_LAYOUT )
+  # try to automatically detect the layout
+  if( EXISTS "${ANDROID_NDK}/RELEASE.TXT")
+   set( ANDROID_NDK_LAYOUT "RELEASE" )
+  elseif( EXISTS "${ANDROID_NDK}/../../linux-x86/toolchain/" )
+   set( ANDROID_NDK_LAYOUT "LINARO" )
+  elseif( EXISTS "${ANDROID_NDK}/../../gcc/" )
+   set( ANDROID_NDK_LAYOUT "ANDROID" )
+  endif()
+ endif()
+ set( ANDROID_NDK_LAYOUT "${ANDROID_NDK_LAYOUT}" CACHE STRING "The inner 
layout of NDK" )
+ mark_as_advanced( ANDROID_NDK_LAYOUT )
+ if( ANDROID_NDK_LAYOUT STREQUAL "LINARO" )
+  set( ANDROID_NDK_HOST_SYSTEM_NAME ${ANDROID_NDK_HOST_SYSTEM_NAME2} ) # only 
32-bit at the moment
+  set( ANDROID_NDK_TOOLCHAINS_PATH 
"${ANDROID_NDK}/../../${ANDROID_NDK_HOST_SYSTEM_NAME}/toolchain" )
+  set( ANDROID_NDK_TOOLCHAINS_SUBPATH  "" )
+  set( ANDROID_NDK_TOOLCHAINS_SUBPATH2 "" )
+ elseif( ANDROID_NDK_LAYOUT STREQUAL "ANDROID" )
+  set( ANDROID_NDK_HOST_SYSTEM_NAME ${ANDROID_NDK_HOST_SYSTEM_NAME2} ) # only 
32-bit at the moment
+  set( ANDROID_NDK_TOOLCHAINS_PATH 
"${ANDROID_NDK}/../../gcc/${ANDROID_NDK_HOST_SYSTEM_NAME}/arm" )
+  set( ANDROID_NDK_TOOLCHAINS_SUBPATH  "" )
+  set( ANDROID_NDK_TOOLCHAINS_SUBPATH2 "" )
+ else() # ANDROID_NDK_LAYOUT STREQUAL "RELEASE"
+  set( ANDROID_NDK_TOOLCHAINS_PATH "${ANDROID_NDK}/toolchains" )
+  set( ANDROID_NDK_TOOLCHAINS_SUBPATH  
"/prebuilt/${ANDROID_NDK_HOST_SYSTEM_NAME}" )
+  set( ANDROID_NDK_TOOLCHAINS_SUBPATH2 
"/prebuilt/${ANDROID_NDK_HOST_SYSTEM_NAME2}" )
+ endif()
+ get_filename_component( ANDROID_NDK_TOOLCHAINS_PATH 
"${ANDROID_NDK_TOOLCHAINS_PATH}" ABSOLUTE )
+
+ # try to detect change of NDK
+ if( CMAKE_AR )
+  string( LENGTH "${ANDROID_NDK_TOOLCHAINS_PATH}" __length )
+  string( SUBSTRING "${CMAKE_AR}" 0 ${__length} __androidNdkPreviousPath )
+  if( NOT __androidNdkPreviousPath STREQUAL ANDROID_NDK_TOOLCHAINS_PATH )
+   message( FATAL_ERROR "It is not possible to change the path to the NDK on 
subsequent CMake run. You must remove all generated files from your build 
folder first.
+   " )
+  endif()
+  unset( __androidNdkPreviousPath )
+  unset( __length )
+ endif()
+endif()
+
+
+# get all the details about standalone toolchain
+if( BUILD_WITH_STANDALONE_TOOLCHAIN )
+ __DETECT_NATIVE_API_LEVEL( ANDROID_SUPPORTED_NATIVE_API_LEVELS 
"${ANDROID_STANDALONE_TOOLCHAIN}/sysroot/usr/include/android/api-level.h" )
+ set( ANDROID_STANDALONE_TOOLCHAIN_API_LEVEL 
${ANDROID_SUPPORTED_NATIVE_API_LEVELS} )
+ set( __availableToolchains "standalone" )
+ __DETECT_TOOLCHAIN_MACHINE_NAME( __availableToolchainMachines 
"${ANDROID_STANDALONE_TOOLCHAIN}" )
+ if( NOT __availableToolchainMachines )
+  message( FATAL_ERROR "Could not determine machine name of your toolchain. 
Probably your Android standalone toolchain is broken." )
+ endif()
+ if( __availableToolchainMachines MATCHES i686 )
+  set( __availableToolchainArchs "x86" )
+ elseif( __availableToolchainMachines MATCHES arm )
+  set( __availableToolchainArchs "arm" )
+ elseif( __availableToolchainMachines MATCHES mipsel )
+  set( __availableToolchainArchs "mipsel" )
+ endif()
+ execute_process( COMMAND 
"${ANDROID_STANDALONE_TOOLCHAIN}/bin/${__availableToolchainMachines}-gcc${TOOL_OS_SUFFIX}"
 -dumpversion
+                  OUTPUT_VARIABLE __availableToolchainCompilerVersions 
OUTPUT_STRIP_TRAILING_WHITESPACE )
+ string( REGEX MATCH "[0-9]+[.][0-9]+([.][0-9]+)?" 
__availableToolchainCompilerVersions "${__availableToolchainCompilerVersions}" )
+ if( EXISTS "${ANDROID_STANDALONE_TOOLCHAIN}/bin/clang${TOOL_OS_SUFFIX}" )
+  list( APPEND __availableToolchains "standalone-clang" )
+  list( APPEND __availableToolchainMachines ${__availableToolchainMachines} )
+  list( APPEND __availableToolchainArchs ${__availableToolchainArchs} )
+  list( APPEND __availableToolchainCompilerVersions 
${__availableToolchainCompilerVersions} )
+ endif()
+endif()
+
+macro( __GLOB_NDK_TOOLCHAINS __availableToolchainsVar __availableToolchainsLst 
__toolchain_subpath )
+ foreach( __toolchain ${${__availableToolchainsLst}} )
+  if( "${__toolchain}" MATCHES "-clang3[.][0-9]$" AND NOT EXISTS 
"${ANDROID_NDK_TOOLCHAINS_PATH}/${__toolchain}${__toolchain_subpath}" )
+   string( REGEX REPLACE "-clang3[.][0-9]$" "-4.6" __gcc_toolchain 
"${__toolchain}" )
+  else()
+   set( __gcc_toolchain "${__toolchain}" )
+  endif()
+  __DETECT_TOOLCHAIN_MACHINE_NAME( __machine 
"${ANDROID_NDK_TOOLCHAINS_PATH}/${__gcc_toolchain}${__toolchain_subpath}" )
+  if( __machine )
+   string( REGEX MATCH "[0-9]+[.][0-9]+([.][0-9x]+)?$" __version 
"${__gcc_toolchain}" )
+   if( __machine MATCHES i686 )
+    set( __arch "x86" )
+   elseif( __machine MATCHES arm )
+    set( __arch "arm" )
+   elseif( __machine MATCHES mipsel )
+    set( __arch "mipsel" )
+   endif()
+   list( APPEND __availableToolchainMachines "${__machine}" )
+   list( APPEND __availableToolchainArchs "${__arch}" )
+   list( APPEND __availableToolchainCompilerVersions "${__version}" )
+   list( APPEND ${__availableToolchainsVar} "${__toolchain}" )
+  endif()
+  unset( __gcc_toolchain )
+ endforeach()
+endmacro()
+
+# get all the details about NDK
+if( BUILD_WITH_ANDROID_NDK )
+ file( GLOB ANDROID_SUPPORTED_NATIVE_API_LEVELS RELATIVE 
"${ANDROID_NDK}/platforms" "${ANDROID_NDK}/platforms/android-*" )
+ string( REPLACE "android-" "" ANDROID_SUPPORTED_NATIVE_API_LEVELS 
"${ANDROID_SUPPORTED_NATIVE_API_LEVELS}" )
+ set( __availableToolchains "" )
+ set( __availableToolchainMachines "" )
+ set( __availableToolchainArchs "" )
+ set( __availableToolchainCompilerVersions "" )
+ if( ANDROID_TOOLCHAIN_NAME AND EXISTS 
"${ANDROID_NDK_TOOLCHAINS_PATH}/${ANDROID_TOOLCHAIN_NAME}/" )
+  # do not go through all toolchains if we know the name
+  set( __availableToolchainsLst "${ANDROID_TOOLCHAIN_NAME}" )
+  __GLOB_NDK_TOOLCHAINS( __availableToolchains __availableToolchainsLst 
"${ANDROID_NDK_TOOLCHAINS_SUBPATH}" )
+  if( NOT __availableToolchains AND NOT ANDROID_NDK_TOOLCHAINS_SUBPATH 
STREQUAL ANDROID_NDK_TOOLCHAINS_SUBPATH2 )
+   __GLOB_NDK_TOOLCHAINS( __availableToolchains __availableToolchainsLst 
"${ANDROID_NDK_TOOLCHAINS_SUBPATH2}" )
+   if( __availableToolchains )
+    set( ANDROID_NDK_TOOLCHAINS_SUBPATH ${ANDROID_NDK_TOOLCHAINS_SUBPATH2} )
+   endif()
+  endif()
+ endif()
+ if( NOT __availableToolchains )
+  file( GLOB __availableToolchainsLst RELATIVE 
"${ANDROID_NDK_TOOLCHAINS_PATH}" "${ANDROID_NDK_TOOLCHAINS_PATH}/*" )
+  if( __availableToolchains )
+   list(SORT __availableToolchainsLst) # we need clang to go after gcc
+  endif()
+  __LIST_FILTER( __availableToolchainsLst "^[.]" )
+  __LIST_FILTER( __availableToolchainsLst "llvm" )
+  __LIST_FILTER( __availableToolchainsLst "renderscript" )
+  __GLOB_NDK_TOOLCHAINS( __availableToolchains __availableToolchainsLst 
"${ANDROID_NDK_TOOLCHAINS_SUBPATH}" )
+  if( NOT __availableToolchains AND NOT ANDROID_NDK_TOOLCHAINS_SUBPATH 
STREQUAL ANDROID_NDK_TOOLCHAINS_SUBPATH2 )
+   __GLOB_NDK_TOOLCHAINS( __availableToolchains __availableToolchainsLst 
"${ANDROID_NDK_TOOLCHAINS_SUBPATH2}" )
+   if( __availableToolchains )
+    set( ANDROID_NDK_TOOLCHAINS_SUBPATH ${ANDROID_NDK_TOOLCHAINS_SUBPATH2} )
+   endif()
+  endif()
+ endif()
+ if( NOT __availableToolchains )
+  message( FATAL_ERROR "Could not find any working toolchain in the NDK. 
Probably your Android NDK is broken." )
+ endif()
+endif()
+
+# build list of available ABIs
+set( ANDROID_SUPPORTED_ABIS "" )
+set( __uniqToolchainArchNames ${__availableToolchainArchs} )
+list( REMOVE_DUPLICATES __uniqToolchainArchNames )
+list( SORT __uniqToolchainArchNames )
+foreach( __arch ${__uniqToolchainArchNames} )
+ list( APPEND ANDROID_SUPPORTED_ABIS ${ANDROID_SUPPORTED_ABIS_${__arch}} )
+endforeach()
+unset( __uniqToolchainArchNames )
+if( NOT ANDROID_SUPPORTED_ABIS )
+ message( FATAL_ERROR "No one of known Android ABIs is supported by this cmake 
toolchain." )
+endif()
+
+# choose target ABI
+__INIT_VARIABLE( ANDROID_ABI OBSOLETE_ARM_TARGET OBSOLETE_ARM_TARGETS VALUES 
${ANDROID_SUPPORTED_ABIS} )
+# verify that target ABI is supported
+list( FIND ANDROID_SUPPORTED_ABIS "${ANDROID_ABI}" __androidAbiIdx )
+if( __androidAbiIdx EQUAL -1 )
+ string( REPLACE ";" "\", \"" PRINTABLE_ANDROID_SUPPORTED_ABIS  
"${ANDROID_SUPPORTED_ABIS}" )
+ message( FATAL_ERROR "Specified ANDROID_ABI = \"${ANDROID_ABI}\" is not 
supported by this cmake toolchain or your NDK/toolchain.
+   Supported values are: \"${PRINTABLE_ANDROID_SUPPORTED_ABIS}\"
+   " )
+endif()
+unset( __androidAbiIdx )
+
+
+# set target ABI options
+if( ANDROID_ABI STREQUAL "x86" )
+ set( X86 true )
+ set( ANDROID_NDK_ABI_NAME "x86" )
+ set( ANDROID_ARCH_NAME "x86" )
+ set( ANDROID_ARCH_FULLNAME "x86" )
+ set( ANDROID_LLVM_TRIPLE "i686-none-linux-android" )
+ set( CMAKE_SYSTEM_PROCESSOR "i686" )
+elseif( ANDROID_ABI STREQUAL "mips" )
+ set( MIPS true )
+ set( ANDROID_NDK_ABI_NAME "mips" )
+ set( ANDROID_ARCH_NAME "mips" )
+ set( ANDROID_ARCH_FULLNAME "mipsel" )
+ set( ANDROID_LLVM_TRIPLE "mipsel-none-linux-android" )
+ set( CMAKE_SYSTEM_PROCESSOR "mips" )
+elseif( ANDROID_ABI STREQUAL "armeabi" )
+ set( ARMEABI true )
+ set( ANDROID_NDK_ABI_NAME "armeabi" )
+ set( ANDROID_ARCH_NAME "arm" )
+ set( ANDROID_ARCH_FULLNAME "arm" )
+ set( ANDROID_LLVM_TRIPLE "armv5te-none-linux-androideabi" )
+ set( CMAKE_SYSTEM_PROCESSOR "armv5te" )
+elseif( ANDROID_ABI STREQUAL "armeabi-v6 with VFP" )
+ set( ARMEABI_V6 true )
+ set( ANDROID_NDK_ABI_NAME "armeabi" )
+ set( ANDROID_ARCH_NAME "arm" )
+ set( ANDROID_ARCH_FULLNAME "arm" )
+ set( ANDROID_LLVM_TRIPLE "armv5te-none-linux-androideabi" )
+ set( CMAKE_SYSTEM_PROCESSOR "armv6" )
+ # need always fallback to older platform
+ set( ARMEABI true )
+elseif( ANDROID_ABI STREQUAL "armeabi-v7a")
+ set( ARMEABI_V7A true )
+ set( ANDROID_NDK_ABI_NAME "armeabi-v7a" )
+ set( ANDROID_ARCH_NAME "arm" )
+ set( ANDROID_ARCH_FULLNAME "arm" )
+ set( ANDROID_LLVM_TRIPLE "armv7-none-linux-androideabi" )
+ set( CMAKE_SYSTEM_PROCESSOR "armv7-a" )
+elseif( ANDROID_ABI STREQUAL "armeabi-v7a with VFPV3" )
+ set( ARMEABI_V7A true )
+ set( ANDROID_NDK_ABI_NAME "armeabi-v7a" )
+ set( ANDROID_ARCH_NAME "arm" )
+ set( ANDROID_ARCH_FULLNAME "arm" )
+ set( ANDROID_LLVM_TRIPLE "armv7-none-linux-androideabi" )
+ set( CMAKE_SYSTEM_PROCESSOR "armv7-a" )
+ set( VFPV3 true )
+elseif( ANDROID_ABI STREQUAL "armeabi-v7a with NEON" )
+ set( ARMEABI_V7A true )
+ set( ANDROID_NDK_ABI_NAME "armeabi-v7a" )
+ set( ANDROID_ARCH_NAME "arm" )
+ set( ANDROID_ARCH_FULLNAME "arm" )
+ set( ANDROID_LLVM_TRIPLE "armv7-none-linux-androideabi" )
+ set( CMAKE_SYSTEM_PROCESSOR "armv7-a" )
+ set( VFPV3 true )
+ set( NEON true )
+else()
+ message( SEND_ERROR "Unknown ANDROID_ABI=\"${ANDROID_ABI}\" is specified." )
+endif()
+
+if( CMAKE_BINARY_DIR AND EXISTS 
"${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeSystem.cmake" )
+ # really dirty hack
+ # it is not possible to change CMAKE_SYSTEM_PROCESSOR after the first run...
+ file( APPEND "${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeSystem.cmake" 
"SET(CMAKE_SYSTEM_PROCESSOR \"${CMAKE_SYSTEM_PROCESSOR}\")\n" )
+endif()
+
+if( ANDROID_ARCH_NAME STREQUAL "arm" AND NOT ARMEABI_V6 )
+ __INIT_VARIABLE( ANDROID_FORCE_ARM_BUILD OBSOLETE_FORCE_ARM VALUES OFF )
+ set( ANDROID_FORCE_ARM_BUILD ${ANDROID_FORCE_ARM_BUILD} CACHE BOOL "Use 
32-bit ARM instructions instead of Thumb-1" FORCE )
+ mark_as_advanced( ANDROID_FORCE_ARM_BUILD )
+else()
+ unset( ANDROID_FORCE_ARM_BUILD CACHE )
+endif()
+
+# choose toolchain
+if( ANDROID_TOOLCHAIN_NAME )
+ list( FIND __availableToolchains "${ANDROID_TOOLCHAIN_NAME}" __toolchainIdx )
+ if( __toolchainIdx EQUAL -1 )
+  list( SORT __availableToolchains )
+  string( REPLACE ";" "\n  * " toolchains_list "${__availableToolchains}" )
+  set( toolchains_list "  * ${toolchains_list}")
+  message( FATAL_ERROR "Specified toolchain \"${ANDROID_TOOLCHAIN_NAME}\" is 
missing in your NDK or broken. Please verify that your NDK is working or select 
another compiler toolchain.
+To configure the toolchain set CMake variable ANDROID_TOOLCHAIN_NAME to one of 
the following values:\n${toolchains_list}\n" )
+ endif()
+ list( GET __availableToolchainArchs ${__toolchainIdx} __toolchainArch )
+ if( NOT __toolchainArch STREQUAL ANDROID_ARCH_FULLNAME )
+  message( SEND_ERROR "Selected toolchain \"${ANDROID_TOOLCHAIN_NAME}\" is not 
able to compile binaries for the \"${ANDROID_ARCH_NAME}\" platform." )
+ endif()
+else()
+ set( __toolchainIdx -1 )
+ set( __applicableToolchains "" )
+ set( __toolchainMaxVersion "0.0.0" )
+ list( LENGTH __availableToolchains __availableToolchainsCount )
+ list( LENGTH __availableToolchainArchs __availableToolchainsArchsCount )
+ if( __availableToolchainsArchsCount LESS __availableToolchainsCount)
+    set(__availableToolchainsCount ${__availableToolchainsArchsCount})
+ endif()
+ math( EXPR __availableToolchainsCount "${__availableToolchainsCount}-1" )
+ foreach( __idx RANGE ${__availableToolchainsCount} )
+  list( GET __availableToolchainArchs ${__idx} __toolchainArch )
+  if( __toolchainArch STREQUAL ANDROID_ARCH_FULLNAME )
+   list( GET __availableToolchainCompilerVersions ${__idx} __toolchainVersion )
+   string( REPLACE "x" "99" __toolchainVersion "${__toolchainVersion}")
+   if( __toolchainVersion VERSION_GREATER __toolchainMaxVersion )
+    set( __toolchainMaxVersion "${__toolchainVersion}" )
+    set( __toolchainIdx ${__idx} )
+   endif()
+  endif()
+ endforeach()
+ unset( __availableToolchainsCount )
+ unset( __toolchainMaxVersion )
+ unset( __toolchainVersion )
+endif()
+unset( __toolchainArch )
+if( __toolchainIdx EQUAL -1 )
+ message( FATAL_ERROR "No one of available compiler toolchains is able to 
compile for ${ANDROID_ARCH_NAME} platform." )
+endif()
+list( GET __availableToolchains ${__toolchainIdx} ANDROID_TOOLCHAIN_NAME )
+list( GET __availableToolchainMachines ${__toolchainIdx} 
ANDROID_TOOLCHAIN_MACHINE_NAME )
+list( GET __availableToolchainCompilerVersions ${__toolchainIdx} 
ANDROID_COMPILER_VERSION )
+
+unset( __toolchainIdx )
+unset( __availableToolchains )
+unset( __availableToolchainMachines )
+unset( __availableToolchainArchs )
+unset( __availableToolchainCompilerVersions )
+
+# choose native API level
+__INIT_VARIABLE( ANDROID_NATIVE_API_LEVEL ENV_ANDROID_NATIVE_API_LEVEL 
ANDROID_API_LEVEL ENV_ANDROID_API_LEVEL ANDROID_STANDALONE_TOOLCHAIN_API_LEVEL 
ANDROID_DEFAULT_NDK_API_LEVEL_${ANDROID_ARCH_NAME} 
ANDROID_DEFAULT_NDK_API_LEVEL )
+string( REGEX MATCH "[0-9]+" ANDROID_NATIVE_API_LEVEL 
"${ANDROID_NATIVE_API_LEVEL}" )
+# adjust API level
+set( __real_api_level ${ANDROID_DEFAULT_NDK_API_LEVEL_${ANDROID_ARCH_NAME}} )
+foreach( __level ${ANDROID_SUPPORTED_NATIVE_API_LEVELS} )
+ if( NOT __level GREATER ANDROID_NATIVE_API_LEVEL AND NOT __level LESS 
__real_api_level )
+  set( __real_api_level ${__level} )
+ endif()
+endforeach()
+if( __real_api_level AND NOT ANDROID_NATIVE_API_LEVEL EQUAL __real_api_level )
+ message( STATUS "Adjusting Android API level 
'android-${ANDROID_NATIVE_API_LEVEL}' to 'android-${__real_api_level}'")
+ set( ANDROID_NATIVE_API_LEVEL ${__real_api_level} )
+endif()
+unset(__real_api_level)
+# validate
+list( FIND ANDROID_SUPPORTED_NATIVE_API_LEVELS "${ANDROID_NATIVE_API_LEVEL}" 
__levelIdx )
+if( __levelIdx EQUAL -1 )
+ message( SEND_ERROR "Specified Android native API level 
'android-${ANDROID_NATIVE_API_LEVEL}' is not supported by your NDK/toolchain." )
+else()
+ if( BUILD_WITH_ANDROID_NDK )
+  __DETECT_NATIVE_API_LEVEL( __realApiLevel 
"${ANDROID_NDK}/platforms/android-${ANDROID_NATIVE_API_LEVEL}/arch-${ANDROID_ARCH_NAME}/usr/include/android/api-level.h"
 )
+  if( NOT __realApiLevel EQUAL ANDROID_NATIVE_API_LEVEL )
+   message( SEND_ERROR "Specified Android API level 
(${ANDROID_NATIVE_API_LEVEL}) does not match to the level found 
(${__realApiLevel}). Probably your copy of NDK is broken." )
+  endif()
+  unset( __realApiLevel )
+ endif()
+ set( ANDROID_NATIVE_API_LEVEL "${ANDROID_NATIVE_API_LEVEL}" CACHE STRING 
"Android API level for native code" FORCE )
+ if( CMAKE_VERSION VERSION_GREATER "2.8" )
+  list( SORT ANDROID_SUPPORTED_NATIVE_API_LEVELS )
+  set_property( CACHE ANDROID_NATIVE_API_LEVEL PROPERTY STRINGS 
${ANDROID_SUPPORTED_NATIVE_API_LEVELS} )
+ endif()
+endif()
+unset( __levelIdx )
+
+
+# remember target ABI
+set( ANDROID_ABI "${ANDROID_ABI}" CACHE STRING "The target ABI for Android. If 
arm, then armeabi-v7a is recommended for hardware floating point." FORCE )
+if( CMAKE_VERSION VERSION_GREATER "2.8" )
+ list( SORT ANDROID_SUPPORTED_ABIS_${ANDROID_ARCH_FULLNAME} )
+ set_property( CACHE ANDROID_ABI PROPERTY STRINGS 
${ANDROID_SUPPORTED_ABIS_${ANDROID_ARCH_FULLNAME}} )
+endif()
+
+
+# runtime choice (STL, rtti, exceptions)
+if( NOT ANDROID_STL )
+ # honor legacy ANDROID_USE_STLPORT
+ if( DEFINED ANDROID_USE_STLPORT )
+  if( ANDROID_USE_STLPORT )
+   set( ANDROID_STL stlport_static )
+  endif()
+  message( WARNING "You are using an obsolete variable ANDROID_USE_STLPORT to 
select the STL variant. Use -DANDROID_STL=stlport_static instead." )
+ endif()
+ if( NOT ANDROID_STL )
+  set( ANDROID_STL gnustl_static )
+ endif()
+endif()
+set( ANDROID_STL "${ANDROID_STL}" CACHE STRING "C++ runtime" )
+set( ANDROID_STL_FORCE_FEATURES ON CACHE BOOL "automatically configure rtti 
and exceptions support based on C++ runtime" )
+mark_as_advanced( ANDROID_STL ANDROID_STL_FORCE_FEATURES )
+
+if( BUILD_WITH_ANDROID_NDK )
+ if( NOT "${ANDROID_STL}" MATCHES 
"^(none|system|system_re|gabi\\+\\+_static|gabi\\+\\+_shared|stlport_static|stlport_shared|gnustl_static|gnustl_shared)$")
+  message( FATAL_ERROR "ANDROID_STL is set to invalid value \"${ANDROID_STL}\".
+The possible values are:
+  none           -> Do not configure the runtime.
+  system         -> Use the default minimal system C++ runtime library.
+  system_re      -> Same as system but with rtti and exceptions.
+  gabi++_static  -> Use the GAbi++ runtime as a static library.
+  gabi++_shared  -> Use the GAbi++ runtime as a shared library.
+  stlport_static -> Use the STLport runtime as a static library.
+  stlport_shared -> Use the STLport runtime as a shared library.
+  gnustl_static  -> (default) Use the GNU STL as a static library.
+  gnustl_shared  -> Use the GNU STL as a shared library.
+" )
+ endif()
+elseif( BUILD_WITH_STANDALONE_TOOLCHAIN )
+ if( NOT "${ANDROID_STL}" MATCHES "^(none|gnustl_static|gnustl_shared)$")
+  message( FATAL_ERROR "ANDROID_STL is set to invalid value \"${ANDROID_STL}\".
+The possible values are:
+  none           -> Do not configure the runtime.
+  gnustl_static  -> (default) Use the GNU STL as a static library.
+  gnustl_shared  -> Use the GNU STL as a shared library.
+" )
+ endif()
+endif()
+
+unset( ANDROID_RTTI )
+unset( ANDROID_EXCEPTIONS )
+unset( ANDROID_STL_INCLUDE_DIRS )
+unset( __libstl )
+unset( __libsupcxx )
+
+if( NOT _CMAKE_IN_TRY_COMPILE AND ANDROID_NDK_RELEASE STREQUAL "r7b" AND 
ARMEABI_V7A AND NOT VFPV3 AND ANDROID_STL MATCHES "gnustl" )
+ message( WARNING  "The GNU STL armeabi-v7a binaries from NDK r7b can crash 
non-NEON devices. The files provided with NDK r7b were not configured properly, 
resulting in crashes on Tegra2-based devices and others when trying to use 
certain floating-point functions (e.g., cosf, sinf, expf).
+You are strongly recommended to switch to another NDK release.
+" )
+endif()
+
+if( NOT _CMAKE_IN_TRY_COMPILE AND X86 AND ANDROID_STL MATCHES "gnustl" AND 
ANDROID_NDK_RELEASE STREQUAL "r6" )
+  message( WARNING  "The x86 system header file from NDK r6 has incorrect 
definition for ptrdiff_t. You are recommended to upgrade to a newer NDK release 
or manually patch the header:
+See https://android.googlesource.com/platform/development.git 
f907f4f9d4e56ccc8093df6fee54454b8bcab6c2
+  diff --git a/ndk/platforms/android-9/arch-x86/include/machine/_types.h 
b/ndk/platforms/android-9/arch-x86/include/machine/_types.h
+  index 5e28c64..65892a1 100644
+  --- a/ndk/platforms/android-9/arch-x86/include/machine/_types.h
+  +++ b/ndk/platforms/android-9/arch-x86/include/machine/_types.h
+  @@ -51,7 +51,11 @@ typedef long int       ssize_t;
+   #endif
+   #ifndef _PTRDIFF_T
+   #define _PTRDIFF_T
+  -typedef long           ptrdiff_t;
+  +#  ifdef __ANDROID__
+  +     typedef int            ptrdiff_t;
+  +#  else
+  +     typedef long           ptrdiff_t;
+  +#  endif
+   #endif
+" )
+endif()
+
+
+# setup paths and STL for standalone toolchain
+if( BUILD_WITH_STANDALONE_TOOLCHAIN )
+ set( ANDROID_TOOLCHAIN_ROOT "${ANDROID_STANDALONE_TOOLCHAIN}" )
+ set( ANDROID_CLANG_TOOLCHAIN_ROOT "${ANDROID_STANDALONE_TOOLCHAIN}" )
+ set( ANDROID_SYSROOT "${ANDROID_STANDALONE_TOOLCHAIN}/sysroot" )
+
+ if( NOT ANDROID_STL STREQUAL "none" )
+  set( ANDROID_STL_INCLUDE_DIRS 
"${ANDROID_STANDALONE_TOOLCHAIN}/include/c++/${ANDROID_COMPILER_VERSION}" )
+  if( NOT EXISTS "${ANDROID_STL_INCLUDE_DIRS}" )
+   # old location ( pre r8c )
+   set( ANDROID_STL_INCLUDE_DIRS 
"${ANDROID_STANDALONE_TOOLCHAIN}/${ANDROID_TOOLCHAIN_MACHINE_NAME}/include/c++/${ANDROID_COMPILER_VERSION}"
 )
+  endif()
+  if( ARMEABI_V7A AND EXISTS 
"${ANDROID_STL_INCLUDE_DIRS}/${ANDROID_TOOLCHAIN_MACHINE_NAME}/${CMAKE_SYSTEM_PROCESSOR}/bits"
 )
+   list( APPEND ANDROID_STL_INCLUDE_DIRS 
"${ANDROID_STL_INCLUDE_DIRS}/${ANDROID_TOOLCHAIN_MACHINE_NAME}/${CMAKE_SYSTEM_PROCESSOR}"
 )
+  elseif( ARMEABI AND NOT ANDROID_FORCE_ARM_BUILD AND EXISTS 
"${ANDROID_STL_INCLUDE_DIRS}/${ANDROID_TOOLCHAIN_MACHINE_NAME}/thumb/bits" )
+   list( APPEND ANDROID_STL_INCLUDE_DIRS 
"${ANDROID_STL_INCLUDE_DIRS}/${ANDROID_TOOLCHAIN_MACHINE_NAME}/thumb" )
+  else()
+   list( APPEND ANDROID_STL_INCLUDE_DIRS 
"${ANDROID_STL_INCLUDE_DIRS}/${ANDROID_TOOLCHAIN_MACHINE_NAME}" )
+  endif()
+  # always search static GNU STL to get the location of libsupc++.a
+  if( ARMEABI_V7A AND NOT ANDROID_FORCE_ARM_BUILD AND EXISTS 
"${ANDROID_STANDALONE_TOOLCHAIN}/${ANDROID_TOOLCHAIN_MACHINE_NAME}/lib/${CMAKE_SYSTEM_PROCESSOR}/thumb/libstdc++.a"
 )
+   set( __libstl 
"${ANDROID_STANDALONE_TOOLCHAIN}/${ANDROID_TOOLCHAIN_MACHINE_NAME}/lib/${CMAKE_SYSTEM_PROCESSOR}/thumb"
 )
+  elseif( ARMEABI_V7A AND EXISTS 
"${ANDROID_STANDALONE_TOOLCHAIN}/${ANDROID_TOOLCHAIN_MACHINE_NAME}/lib/${CMAKE_SYSTEM_PROCESSOR}/libstdc++.a"
 )
+   set( __libstl 
"${ANDROID_STANDALONE_TOOLCHAIN}/${ANDROID_TOOLCHAIN_MACHINE_NAME}/lib/${CMAKE_SYSTEM_PROCESSOR}"
 )
+  elseif( ARMEABI AND NOT ANDROID_FORCE_ARM_BUILD AND EXISTS 
"${ANDROID_STANDALONE_TOOLCHAIN}/${ANDROID_TOOLCHAIN_MACHINE_NAME}/lib/thumb/libstdc++.a"
 )
+   set( __libstl 
"${ANDROID_STANDALONE_TOOLCHAIN}/${ANDROID_TOOLCHAIN_MACHINE_NAME}/lib/thumb" )
+  elseif( EXISTS 
"${ANDROID_STANDALONE_TOOLCHAIN}/${ANDROID_TOOLCHAIN_MACHINE_NAME}/lib/libstdc++.a"
 )
+   set( __libstl 
"${ANDROID_STANDALONE_TOOLCHAIN}/${ANDROID_TOOLCHAIN_MACHINE_NAME}/lib" )
+  endif()
+  if( __libstl )
+   set( __libsupcxx "${__libstl}/libsupc++.a" )
+   set( __libstl    "${__libstl}/libstdc++.a" )
+  endif()
+  if( NOT EXISTS "${__libsupcxx}" )
+   message( FATAL_ERROR "The required libstdsupc++.a is missing in your 
standalone toolchain.
+ Usually it happens because of bug in make-standalone-toolchain.sh script from 
NDK r7, r7b and r7c.
+ You need to either upgrade to newer NDK or manually copy
+     
$ANDROID_NDK/sources/cxx-stl/gnu-libstdc++/libs/${ANDROID_NDK_ABI_NAME}/libsupc++.a
+ to
+     ${__libsupcxx}
+   " )
+  endif()
+  if( ANDROID_STL STREQUAL "gnustl_shared" )
+   if( ARMEABI_V7A AND EXISTS 
"${ANDROID_STANDALONE_TOOLCHAIN}/${ANDROID_TOOLCHAIN_MACHINE_NAME}/lib/${CMAKE_SYSTEM_PROCESSOR}/libgnustl_shared.so"
 )
+    set( __libstl 
"${ANDROID_STANDALONE_TOOLCHAIN}/${ANDROID_TOOLCHAIN_MACHINE_NAME}/lib/${CMAKE_SYSTEM_PROCESSOR}/libgnustl_shared.so"
 )
+   elseif( ARMEABI AND NOT ANDROID_FORCE_ARM_BUILD AND EXISTS 
"${ANDROID_STANDALONE_TOOLCHAIN}/${ANDROID_TOOLCHAIN_MACHINE_NAME}/lib/thumb/libgnustl_shared.so"
 )
+    set( __libstl 
"${ANDROID_STANDALONE_TOOLCHAIN}/${ANDROID_TOOLCHAIN_MACHINE_NAME}/lib/thumb/libgnustl_shared.so"
 )
+   elseif( EXISTS 
"${ANDROID_STANDALONE_TOOLCHAIN}/${ANDROID_TOOLCHAIN_MACHINE_NAME}/lib/libgnustl_shared.so"
 )
+    set( __libstl 
"${ANDROID_STANDALONE_TOOLCHAIN}/${ANDROID_TOOLCHAIN_MACHINE_NAME}/lib/libgnustl_shared.so"
 )
+   endif()
+  endif()
+ endif()
+endif()
+
+# clang
+if( "${ANDROID_TOOLCHAIN_NAME}" STREQUAL "standalone-clang" )
+ set( ANDROID_COMPILER_IS_CLANG 1 )
+ execute_process( COMMAND 
"${ANDROID_CLANG_TOOLCHAIN_ROOT}/bin/clang${TOOL_OS_SUFFIX}" --version 
OUTPUT_VARIABLE ANDROID_CLANG_VERSION OUTPUT_STRIP_TRAILING_WHITESPACE )
+ string( REGEX MATCH "[0-9]+[.][0-9]+" ANDROID_CLANG_VERSION 
"${ANDROID_CLANG_VERSION}")
+elseif( "${ANDROID_TOOLCHAIN_NAME}" MATCHES "-clang3[.][0-9]?$" )
+ string( REGEX MATCH "3[.][0-9]$" ANDROID_CLANG_VERSION 
"${ANDROID_TOOLCHAIN_NAME}")
+ string( REGEX REPLACE "-clang${ANDROID_CLANG_VERSION}$" "-4.6" 
ANDROID_GCC_TOOLCHAIN_NAME "${ANDROID_TOOLCHAIN_NAME}" )
+ if( NOT EXISTS 
"${ANDROID_NDK_TOOLCHAINS_PATH}/llvm-${ANDROID_CLANG_VERSION}${ANDROID_NDK_TOOLCHAINS_SUBPATH}/bin/clang${TOOL_OS_SUFFIX}"
 )
+  message( FATAL_ERROR "Could not find the Clang compiler driver" )
+ endif()
+ set( ANDROID_COMPILER_IS_CLANG 1 )
+ set( ANDROID_CLANG_TOOLCHAIN_ROOT 
"${ANDROID_NDK_TOOLCHAINS_PATH}/llvm-${ANDROID_CLANG_VERSION}${ANDROID_NDK_TOOLCHAINS_SUBPATH}"
 )
+else()
+ set( ANDROID_GCC_TOOLCHAIN_NAME "${ANDROID_TOOLCHAIN_NAME}" )
+ unset( ANDROID_COMPILER_IS_CLANG CACHE )
+endif()
+
+string( REPLACE "." "" _clang_name "clang${ANDROID_CLANG_VERSION}" )
+if( NOT EXISTS 
"${ANDROID_CLANG_TOOLCHAIN_ROOT}/bin/${_clang_name}${TOOL_OS_SUFFIX}" )
+ set( _clang_name "clang" )
+endif()
+
+
+# setup paths and STL for NDK
+if( BUILD_WITH_ANDROID_NDK )
+ set( ANDROID_TOOLCHAIN_ROOT 
"${ANDROID_NDK_TOOLCHAINS_PATH}/${ANDROID_GCC_TOOLCHAIN_NAME}${ANDROID_NDK_TOOLCHAINS_SUBPATH}"
 )
+ set( ANDROID_SYSROOT 
"${ANDROID_NDK}/platforms/android-${ANDROID_NATIVE_API_LEVEL}/arch-${ANDROID_ARCH_NAME}"
 )
+
+ if( ANDROID_STL STREQUAL "none" )
+  # do nothing
+ elseif( ANDROID_STL STREQUAL "system" )
+  set( ANDROID_RTTI             OFF )
+  set( ANDROID_EXCEPTIONS       OFF )
+  set( ANDROID_STL_INCLUDE_DIRS 
"${ANDROID_NDK}/sources/cxx-stl/system/include" )
+ elseif( ANDROID_STL STREQUAL "system_re" )
+  set( ANDROID_RTTI             ON )
+  set( ANDROID_EXCEPTIONS       ON )
+  set( ANDROID_STL_INCLUDE_DIRS 
"${ANDROID_NDK}/sources/cxx-stl/system/include" )
+ elseif( ANDROID_STL MATCHES "gabi" )
+  if( ANDROID_NDK_RELEASE STRLESS "r7" )
+   message( FATAL_ERROR "gabi++ is not awailable in your NDK. You have to 
upgrade to NDK r7 or newer to use gabi++.")
+  endif()
+  set( ANDROID_RTTI             ON )
+  set( ANDROID_EXCEPTIONS       OFF )
+  set( ANDROID_STL_INCLUDE_DIRS 
"${ANDROID_NDK}/sources/cxx-stl/gabi++/include" )
+  set( __libstl                 
"${ANDROID_NDK}/sources/cxx-stl/gabi++/libs/${ANDROID_NDK_ABI_NAME}/libgabi++_static.a"
 )
+ elseif( ANDROID_STL MATCHES "stlport" )
+  if( NOT ANDROID_NDK_RELEASE STRLESS "r8d" )
+   set( ANDROID_EXCEPTIONS       ON )
+  else()
+   set( ANDROID_EXCEPTIONS       OFF )
+  endif()
+  if( ANDROID_NDK_RELEASE STRLESS "r7" )
+   set( ANDROID_RTTI            OFF )
+  else()
+   set( ANDROID_RTTI            ON )
+  endif()
+  set( ANDROID_STL_INCLUDE_DIRS 
"${ANDROID_NDK}/sources/cxx-stl/stlport/stlport" )
+  set( __libstl                 
"${ANDROID_NDK}/sources/cxx-stl/stlport/libs/${ANDROID_NDK_ABI_NAME}/libstlport_static.a"
 )
+ elseif( ANDROID_STL MATCHES "gnustl" )
+  set( ANDROID_EXCEPTIONS       ON )
+  set( ANDROID_RTTI             ON )
+  if( EXISTS 
"${ANDROID_NDK}/sources/cxx-stl/gnu-libstdc++/${ANDROID_COMPILER_VERSION}" )
+   if( ARMEABI_V7A AND ANDROID_COMPILER_VERSION VERSION_EQUAL "4.7" AND 
ANDROID_NDK_RELEASE STREQUAL "r8d" )
+    # gnustl binary for 4.7 compiler is buggy :(
+    # TODO: look for right fix
+    set( __libstl                
"${ANDROID_NDK}/sources/cxx-stl/gnu-libstdc++/4.6" )
+   else()
+    set( __libstl                
"${ANDROID_NDK}/sources/cxx-stl/gnu-libstdc++/${ANDROID_COMPILER_VERSION}" )
+   endif()
+  else()
+   set( __libstl                "${ANDROID_NDK}/sources/cxx-stl/gnu-libstdc++" 
)
+  endif()
+  set( ANDROID_STL_INCLUDE_DIRS "${__libstl}/include" 
"${__libstl}/libs/${ANDROID_NDK_ABI_NAME}/include" )
+  if( EXISTS "${__libstl}/libs/${ANDROID_NDK_ABI_NAME}/libgnustl_static.a" )
+   set( __libstl                
"${__libstl}/libs/${ANDROID_NDK_ABI_NAME}/libgnustl_static.a" )
+  else()
+   set( __libstl                
"${__libstl}/libs/${ANDROID_NDK_ABI_NAME}/libstdc++.a" )
+  endif()
+ else()
+  message( FATAL_ERROR "Unknown runtime: ${ANDROID_STL}" )
+ endif()
+ # find libsupc++.a - rtti & exceptions
+ if( ANDROID_STL STREQUAL "system_re" OR ANDROID_STL MATCHES "gnustl" )
+  set( __libsupcxx 
"${ANDROID_NDK}/sources/cxx-stl/gnu-libstdc++/${ANDROID_COMPILER_VERSION}/libs/${ANDROID_NDK_ABI_NAME}/libsupc++.a"
 ) # r8b or newer
+  if( NOT EXISTS "${__libsupcxx}" )
+   set( __libsupcxx 
"${ANDROID_NDK}/sources/cxx-stl/gnu-libstdc++/libs/${ANDROID_NDK_ABI_NAME}/libsupc++.a"
 ) # r7-r8
+  endif()
+  if( NOT EXISTS "${__libsupcxx}" ) # before r7
+   if( ARMEABI_V7A )
+    if( ANDROID_FORCE_ARM_BUILD )
+     set( __libsupcxx 
"${ANDROID_TOOLCHAIN_ROOT}/${ANDROID_TOOLCHAIN_MACHINE_NAME}/lib/${CMAKE_SYSTEM_PROCESSOR}/libsupc++.a"
 )
+    else()
+     set( __libsupcxx 
"${ANDROID_TOOLCHAIN_ROOT}/${ANDROID_TOOLCHAIN_MACHINE_NAME}/lib/${CMAKE_SYSTEM_PROCESSOR}/thumb/libsupc++.a"
 )
+    endif()
+   elseif( ARMEABI AND NOT ANDROID_FORCE_ARM_BUILD )
+    set( __libsupcxx 
"${ANDROID_TOOLCHAIN_ROOT}/${ANDROID_TOOLCHAIN_MACHINE_NAME}/lib/thumb/libsupc++.a"
 )
+   else()
+    set( __libsupcxx 
"${ANDROID_TOOLCHAIN_ROOT}/${ANDROID_TOOLCHAIN_MACHINE_NAME}/lib/libsupc++.a" )
+   endif()
+  endif()
+  if( NOT EXISTS "${__libsupcxx}")
+   message( ERROR "Could not find libsupc++.a for a chosen platform. Either 
your NDK is not supported or is broken.")
+  endif()
+ endif()
+endif()
+
+
+# case of shared STL linkage
+if( ANDROID_STL MATCHES "shared" AND DEFINED __libstl )
+ string( REPLACE "_static.a" "_shared.so" __libstl "${__libstl}" )
+ # TODO: check if .so file exists before the renaming
+endif()
+
+
+# ccache support
+__INIT_VARIABLE( _ndk_ccache NDK_CCACHE ENV_NDK_CCACHE )
+if( _ndk_ccache )
+ if( DEFINED NDK_CCACHE AND NOT EXISTS NDK_CCACHE )
+  unset( NDK_CCACHE CACHE )
+ endif()
+ find_program( NDK_CCACHE "${_ndk_ccache}" DOC "The path to ccache binary")
+else()
+ unset( NDK_CCACHE CACHE )
+endif()
+unset( _ndk_ccache )
+
+
+# setup the cross-compiler
+if( NOT CMAKE_C_COMPILER )
+ if( NDK_CCACHE AND NOT ANDROID_SYSROOT MATCHES "[ ;\"]" )
+  set( CMAKE_C_COMPILER   "${NDK_CCACHE}" CACHE PATH "ccache as C compiler" )
+  set( CMAKE_CXX_COMPILER "${NDK_CCACHE}" CACHE PATH "ccache as C++ compiler" )
+  if( ANDROID_COMPILER_IS_CLANG )
+   set( CMAKE_C_COMPILER_ARG1   
"${ANDROID_CLANG_TOOLCHAIN_ROOT}/bin/${_clang_name}${TOOL_OS_SUFFIX}"   CACHE 
PATH "C compiler")
+   set( CMAKE_CXX_COMPILER_ARG1 
"${ANDROID_CLANG_TOOLCHAIN_ROOT}/bin/${_clang_name}++${TOOL_OS_SUFFIX}" CACHE 
PATH "C++ compiler")
+  else()
+   set( CMAKE_C_COMPILER_ARG1   
"${ANDROID_TOOLCHAIN_ROOT}/bin/${ANDROID_TOOLCHAIN_MACHINE_NAME}-gcc${TOOL_OS_SUFFIX}"
 CACHE PATH "C compiler")
+   set( CMAKE_CXX_COMPILER_ARG1 
"${ANDROID_TOOLCHAIN_ROOT}/bin/${ANDROID_TOOLCHAIN_MACHINE_NAME}-g++${TOOL_OS_SUFFIX}"
 CACHE PATH "C++ compiler")
+  endif()
+ else()
+  if( ANDROID_COMPILER_IS_CLANG )
+   set( CMAKE_C_COMPILER   
"${ANDROID_CLANG_TOOLCHAIN_ROOT}/bin/${_clang_name}${TOOL_OS_SUFFIX}"   CACHE 
PATH "C compiler")
+   set( CMAKE_CXX_COMPILER 
"${ANDROID_CLANG_TOOLCHAIN_ROOT}/bin/${_clang_name}++${TOOL_OS_SUFFIX}" CACHE 
PATH "C++ compiler")
+  else()
+   set( CMAKE_C_COMPILER   
"${ANDROID_TOOLCHAIN_ROOT}/bin/${ANDROID_TOOLCHAIN_MACHINE_NAME}-gcc${TOOL_OS_SUFFIX}"
    CACHE PATH "C compiler" )
+   set( CMAKE_CXX_COMPILER 
"${ANDROID_TOOLCHAIN_ROOT}/bin/${ANDROID_TOOLCHAIN_MACHINE_NAME}-g++${TOOL_OS_SUFFIX}"
    CACHE PATH "C++ compiler" )
+  endif()
+ endif()
+ set( CMAKE_ASM_COMPILER 
"${ANDROID_TOOLCHAIN_ROOT}/bin/${ANDROID_TOOLCHAIN_MACHINE_NAME}-gcc${TOOL_OS_SUFFIX}"
     CACHE PATH "assembler" )
+ set( CMAKE_STRIP        
"${ANDROID_TOOLCHAIN_ROOT}/bin/${ANDROID_TOOLCHAIN_MACHINE_NAME}-strip${TOOL_OS_SUFFIX}"
   CACHE PATH "strip" )
+ set( CMAKE_AR           
"${ANDROID_TOOLCHAIN_ROOT}/bin/${ANDROID_TOOLCHAIN_MACHINE_NAME}-ar${TOOL_OS_SUFFIX}"
      CACHE PATH "archive" )
+ set( CMAKE_LINKER       
"${ANDROID_TOOLCHAIN_ROOT}/bin/${ANDROID_TOOLCHAIN_MACHINE_NAME}-ld${TOOL_OS_SUFFIX}"
      CACHE PATH "linker" )
+ set( CMAKE_NM           
"${ANDROID_TOOLCHAIN_ROOT}/bin/${ANDROID_TOOLCHAIN_MACHINE_NAME}-nm${TOOL_OS_SUFFIX}"
      CACHE PATH "nm" )
+ set( CMAKE_OBJCOPY      
"${ANDROID_TOOLCHAIN_ROOT}/bin/${ANDROID_TOOLCHAIN_MACHINE_NAME}-objcopy${TOOL_OS_SUFFIX}"
 CACHE PATH "objcopy" )
+ set( CMAKE_OBJDUMP      
"${ANDROID_TOOLCHAIN_ROOT}/bin/${ANDROID_TOOLCHAIN_MACHINE_NAME}-objdump${TOOL_OS_SUFFIX}"
 CACHE PATH "objdump" )
+ set( CMAKE_RANLIB       
"${ANDROID_TOOLCHAIN_ROOT}/bin/${ANDROID_TOOLCHAIN_MACHINE_NAME}-ranlib${TOOL_OS_SUFFIX}"
  CACHE PATH "ranlib" )
+endif()
+
+set( _CMAKE_TOOLCHAIN_PREFIX "${ANDROID_TOOLCHAIN_MACHINE_NAME}-" )
+if( CMAKE_VERSION VERSION_LESS 2.8.5 )
+ set( CMAKE_ASM_COMPILER_ARG1 "-c" )
+endif()
+if( APPLE )
+ find_program( CMAKE_INSTALL_NAME_TOOL NAMES install_name_tool )
+ if( NOT CMAKE_INSTALL_NAME_TOOL )
+  message( FATAL_ERROR "Could not find install_name_tool, please check your 
installation." )
+ endif()
+ mark_as_advanced( CMAKE_INSTALL_NAME_TOOL )
+endif()
+
+# Force set compilers because standard identification works badly for us
+include( CMakeForceCompiler )
+CMAKE_FORCE_C_COMPILER( "${CMAKE_C_COMPILER}" GNU )
+if( ANDROID_COMPILER_IS_CLANG )
+ set( CMAKE_C_COMPILER_ID Clang)
+endif()
+set( CMAKE_C_PLATFORM_ID Linux )
+set( CMAKE_C_SIZEOF_DATA_PTR 4 )
+set( CMAKE_C_HAS_ISYSROOT 1 )
+set( CMAKE_C_COMPILER_ABI ELF )
+CMAKE_FORCE_CXX_COMPILER( "${CMAKE_CXX_COMPILER}" GNU )
+if( ANDROID_COMPILER_IS_CLANG )
+ set( CMAKE_CXX_COMPILER_ID Clang)
+endif()
+set( CMAKE_CXX_PLATFORM_ID Linux )
+set( CMAKE_CXX_SIZEOF_DATA_PTR 4 )
+set( CMAKE_CXX_HAS_ISYSROOT 1 )
+set( CMAKE_CXX_COMPILER_ABI ELF )
+set( CMAKE_CXX_SOURCE_FILE_EXTENSIONS cc cp cxx cpp CPP c++ C )
+# force ASM compiler (required for CMake < 2.8.5)
+set( CMAKE_ASM_COMPILER_ID_RUN TRUE )
+set( CMAKE_ASM_COMPILER_ID GNU )
+set( CMAKE_ASM_COMPILER_WORKS TRUE )
+set( CMAKE_ASM_COMPILER_FORCED TRUE )
+set( CMAKE_COMPILER_IS_GNUASM 1)
+set( CMAKE_ASM_SOURCE_FILE_EXTENSIONS s S asm )
+
+# flags and definitions
+remove_definitions( -DANDROID )
+add_definitions( -DANDROID )
+
+if( ANDROID_SYSROOT MATCHES "[ ;\"]" )
+ if( CMAKE_HOST_WIN32 )
+  # try to convert path to 8.3 form
+  file( WRITE "${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/cvt83.cmd" "@echo 
%~s1" )
+  execute_process( COMMAND "$ENV{ComSpec}" /c 
"${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/cvt83.cmd" "${ANDROID_SYSROOT}"
+                   OUTPUT_VARIABLE __path OUTPUT_STRIP_TRAILING_WHITESPACE
+                   RESULT_VARIABLE __result ERROR_QUIET )
+  if( __result EQUAL 0 )
+   file( TO_CMAKE_PATH "${__path}" ANDROID_SYSROOT )
+   set( ANDROID_CXX_FLAGS "--sysroot=${ANDROID_SYSROOT}" )
+  else()
+   set( ANDROID_CXX_FLAGS "--sysroot=\"${ANDROID_SYSROOT}\"" )
+  endif()
+ else()
+  set( ANDROID_CXX_FLAGS "'--sysroot=${ANDROID_SYSROOT}'" )
+ endif()
+ if( NOT _CMAKE_IN_TRY_COMPILE )
+  # quotes can break try_compile and compiler identification
+  message(WARNING "Path to your Android NDK (or toolchain) has 
non-alphanumeric symbols.\nThe build might be broken.\n")
+ endif()
+else()
+ set( ANDROID_CXX_FLAGS "--sysroot=${ANDROID_SYSROOT}" )
+endif()
+
+# NDK flags
+if( ARMEABI OR ARMEABI_V7A )
+ set( ANDROID_CXX_FLAGS "${ANDROID_CXX_FLAGS} -fpic -funwind-tables" )
+ if( NOT ANDROID_FORCE_ARM_BUILD AND NOT ARMEABI_V6 )
+  set( ANDROID_CXX_FLAGS_RELEASE "-mthumb -fomit-frame-pointer 
-fno-strict-aliasing" )
+  set( ANDROID_CXX_FLAGS_DEBUG   "-marm -fno-omit-frame-pointer 
-fno-strict-aliasing" )
+  if( NOT ANDROID_COMPILER_IS_CLANG )
+   set( ANDROID_CXX_FLAGS "${ANDROID_CXX_FLAGS} -finline-limit=64" )
+  endif()
+ else()
+  # always compile ARMEABI_V6 in arm mode; otherwise there is no difference 
from ARMEABI
+  set( ANDROID_CXX_FLAGS_RELEASE "-marm -fomit-frame-pointer 
-fstrict-aliasing" )
+  set( ANDROID_CXX_FLAGS_DEBUG   "-marm -fno-omit-frame-pointer 
-fno-strict-aliasing" )
+  if( NOT ANDROID_COMPILER_IS_CLANG )
+   set( ANDROID_CXX_FLAGS "${ANDROID_CXX_FLAGS} -funswitch-loops 
-finline-limit=300" )
+  endif()
+ endif()
+elseif( X86 )
+ set( ANDROID_CXX_FLAGS "${ANDROID_CXX_FLAGS} -funwind-tables" )
+ if( NOT ANDROID_COMPILER_IS_CLANG )
+  set( ANDROID_CXX_FLAGS "${ANDROID_CXX_FLAGS} -funswitch-loops 
-finline-limit=300" )
+ else()
+  set( ANDROID_CXX_FLAGS "${ANDROID_CXX_FLAGS} -fPIC" )
+ endif()
+ set( ANDROID_CXX_FLAGS_RELEASE "-fomit-frame-pointer -fstrict-aliasing" )
+ set( ANDROID_CXX_FLAGS_DEBUG   "-fno-omit-frame-pointer -fno-strict-aliasing" 
)
+elseif( MIPS )
+ set( ANDROID_CXX_FLAGS         "${ANDROID_CXX_FLAGS} -fpic 
-fno-strict-aliasing -finline-functions -ffunction-sections -funwind-tables 
-fmessage-length=0" )
+ set( ANDROID_CXX_FLAGS_RELEASE "-fomit-frame-pointer" )
+ set( ANDROID_CXX_FLAGS_DEBUG   "-fno-omit-frame-pointer" )
+ if( NOT ANDROID_COMPILER_IS_CLANG )
+  set( ANDROID_CXX_FLAGS "${ANDROID_CXX_FLAGS} 
-fno-inline-functions-called-once -fgcse-after-reload -frerun-cse-after-loop 
-frename-registers" )
+  set( ANDROID_CXX_FLAGS_RELEASE "${ANDROID_CXX_FLAGS_RELEASE} 
-funswitch-loops -finline-limit=300" )
+ endif()
+elseif()
+ set( ANDROID_CXX_FLAGS_RELEASE "" )
+ set( ANDROID_CXX_FLAGS_DEBUG   "" )
+endif()
+
+set( ANDROID_CXX_FLAGS "${ANDROID_CXX_FLAGS} -fsigned-char" ) # good/necessary 
when porting desktop libraries
+
+if( NOT X86 AND NOT ANDROID_COMPILER_IS_CLANG )
+ set( ANDROID_CXX_FLAGS "-Wno-psabi ${ANDROID_CXX_FLAGS}" )
+endif()
+
+if( NOT ANDROID_COMPILER_VERSION VERSION_LESS "4.6" )
+ set( ANDROID_CXX_FLAGS "${ANDROID_CXX_FLAGS} -no-canonical-prefixes" ) # see 
https://android-review.googlesource.com/#/c/47564/
+endif()
+
+# ABI-specific flags
+if( ARMEABI_V7A )
+ set( ANDROID_CXX_FLAGS "${ANDROID_CXX_FLAGS} -march=armv7-a 
-mfloat-abi=softfp" )
+ if( NEON )
+  set( ANDROID_CXX_FLAGS "${ANDROID_CXX_FLAGS} -mfpu=neon -march=armv7-a" )
+ elseif( VFPV3 )
+  set( ANDROID_CXX_FLAGS "${ANDROID_CXX_FLAGS} -mfpu=vfpv3" )
+ else()
+  set( ANDROID_CXX_FLAGS "${ANDROID_CXX_FLAGS} -mfpu=vfpv3-d16" )
+ endif()
+elseif( ARMEABI_V6 )
+ set( ANDROID_CXX_FLAGS "${ANDROID_CXX_FLAGS} -march=armv6 -mfloat-abi=softfp 
-mfpu=vfp" ) # vfp == vfpv2
+elseif( ARMEABI )
+ set( ANDROID_CXX_FLAGS "${ANDROID_CXX_FLAGS} -march=armv5te -mtune=xscale 
-msoft-float" )
+endif()
+
+if( ANDROID_STL MATCHES "gnustl" AND (EXISTS "${__libstl}" OR EXISTS 
"${__libsupcxx}") )
+ set( CMAKE_CXX_CREATE_SHARED_LIBRARY "<CMAKE_C_COMPILER> 
<CMAKE_SHARED_LIBRARY_CXX_FLAGS> <LANGUAGE_COMPILE_FLAGS> <LINK_FLAGS> 
<CMAKE_SHARED_LIBRARY_CREATE_CXX_FLAGS> 
<CMAKE_SHARED_LIBRARY_SONAME_CXX_FLAG><TARGET_SONAME> -o <TARGET> <OBJECTS> 
<LINK_LIBRARIES>" )
+ set( CMAKE_CXX_CREATE_SHARED_MODULE  "<CMAKE_C_COMPILER> 
<CMAKE_SHARED_LIBRARY_CXX_FLAGS> <LANGUAGE_COMPILE_FLAGS> <LINK_FLAGS> 
<CMAKE_SHARED_LIBRARY_CREATE_CXX_FLAGS> 
<CMAKE_SHARED_LIBRARY_SONAME_CXX_FLAG><TARGET_SONAME> -o <TARGET> <OBJECTS> 
<LINK_LIBRARIES>" )
+ set( CMAKE_CXX_LINK_EXECUTABLE       "<CMAKE_C_COMPILER> <FLAGS> 
<CMAKE_CXX_LINK_FLAGS> <LINK_FLAGS> <OBJECTS> -o <TARGET> <LINK_LIBRARIES>" )
+else()
+ set( CMAKE_CXX_CREATE_SHARED_LIBRARY "<CMAKE_CXX_COMPILER> 
<CMAKE_SHARED_LIBRARY_CXX_FLAGS> <LANGUAGE_COMPILE_FLAGS> <LINK_FLAGS> 
<CMAKE_SHARED_LIBRARY_CREATE_CXX_FLAGS> 
<CMAKE_SHARED_LIBRARY_SONAME_CXX_FLAG><TARGET_SONAME> -o <TARGET> <OBJECTS> 
<LINK_LIBRARIES>" )
+ set( CMAKE_CXX_CREATE_SHARED_MODULE  "<CMAKE_CXX_COMPILER> 
<CMAKE_SHARED_LIBRARY_CXX_FLAGS> <LANGUAGE_COMPILE_FLAGS> <LINK_FLAGS> 
<CMAKE_SHARED_LIBRARY_CREATE_CXX_FLAGS> 
<CMAKE_SHARED_LIBRARY_SONAME_CXX_FLAG><TARGET_SONAME> -o <TARGET> <OBJECTS> 
<LINK_LIBRARIES>" )
+ set( CMAKE_CXX_LINK_EXECUTABLE       "<CMAKE_CXX_COMPILER> <FLAGS> 
<CMAKE_CXX_LINK_FLAGS> <LINK_FLAGS> <OBJECTS> -o <TARGET> <LINK_LIBRARIES>" )
+endif()
+
+# STL
+if( EXISTS "${__libstl}" OR EXISTS "${__libsupcxx}" )
+ if( EXISTS "${__libstl}" )
+  set( CMAKE_CXX_CREATE_SHARED_LIBRARY "${CMAKE_CXX_CREATE_SHARED_LIBRARY} 
\"${__libstl}\"" )
+  set( CMAKE_CXX_CREATE_SHARED_MODULE  "${CMAKE_CXX_CREATE_SHARED_MODULE} 
\"${__libstl}\"" )
+  set( CMAKE_CXX_LINK_EXECUTABLE       "${CMAKE_CXX_LINK_EXECUTABLE} 
\"${__libstl}\"" )
+ endif()
+ if( EXISTS "${__libsupcxx}" )
+  set( CMAKE_CXX_CREATE_SHARED_LIBRARY "${CMAKE_CXX_CREATE_SHARED_LIBRARY} 
\"${__libsupcxx}\"" )
+  set( CMAKE_CXX_CREATE_SHARED_MODULE  "${CMAKE_CXX_CREATE_SHARED_MODULE} 
\"${__libsupcxx}\"" )
+  set( CMAKE_CXX_LINK_EXECUTABLE       "${CMAKE_CXX_LINK_EXECUTABLE} 
\"${__libsupcxx}\"" )
+  # C objects:
+  set( CMAKE_C_CREATE_SHARED_LIBRARY "<CMAKE_C_COMPILER> 
<CMAKE_SHARED_LIBRARY_C_FLAGS> <LANGUAGE_COMPILE_FLAGS> <LINK_FLAGS> 
<CMAKE_SHARED_LIBRARY_CREATE_C_FLAGS> 
<CMAKE_SHARED_LIBRARY_SONAME_C_FLAG><TARGET_SONAME> -o <TARGET> <OBJECTS> 
<LINK_LIBRARIES>" )
+  set( CMAKE_C_CREATE_SHARED_MODULE  "<CMAKE_C_COMPILER> 
<CMAKE_SHARED_LIBRARY_C_FLAGS> <LANGUAGE_COMPILE_FLAGS> <LINK_FLAGS> 
<CMAKE_SHARED_LIBRARY_CREATE_C_FLAGS> 
<CMAKE_SHARED_LIBRARY_SONAME_C_FLAG><TARGET_SONAME> -o <TARGET> <OBJECTS> 
<LINK_LIBRARIES>" )
+  set( CMAKE_C_LINK_EXECUTABLE       "<CMAKE_C_COMPILER> <FLAGS> 
<CMAKE_C_LINK_FLAGS> <LINK_FLAGS> <OBJECTS> -o <TARGET> <LINK_LIBRARIES>" )
+  set( CMAKE_C_CREATE_SHARED_LIBRARY "${CMAKE_C_CREATE_SHARED_LIBRARY} 
\"${__libsupcxx}\"" )
+  set( CMAKE_C_CREATE_SHARED_MODULE  "${CMAKE_C_CREATE_SHARED_MODULE} 
\"${__libsupcxx}\"" )
+  set( CMAKE_C_LINK_EXECUTABLE       "${CMAKE_C_LINK_EXECUTABLE} 
\"${__libsupcxx}\"" )
+ endif()
+ if( ANDROID_STL MATCHES "gnustl" )
+  if( NOT EXISTS "${ANDROID_LIBM_PATH}" )
+   set( ANDROID_LIBM_PATH -lm )
+  endif()
+  set( CMAKE_CXX_CREATE_SHARED_LIBRARY "${CMAKE_CXX_CREATE_SHARED_LIBRARY} 
${ANDROID_LIBM_PATH}" )
+  set( CMAKE_CXX_CREATE_SHARED_MODULE  "${CMAKE_CXX_CREATE_SHARED_MODULE} 
${ANDROID_LIBM_PATH}" )
+  set( CMAKE_CXX_LINK_EXECUTABLE       "${CMAKE_CXX_LINK_EXECUTABLE} 
${ANDROID_LIBM_PATH}" )
+ endif()
+endif()
+
+# variables controlling optional build flags
+if (ANDROID_NDK_RELEASE STRLESS "r7")
+ # libGLESv2.so in NDK's prior to r7 refers to missing external symbols.
+ # So this flag option is required for all projects using OpenGL from native.
+ __INIT_VARIABLE( ANDROID_SO_UNDEFINED                      VALUES ON )
+else()
+ __INIT_VARIABLE( ANDROID_SO_UNDEFINED                      VALUES OFF )
+endif()
+__INIT_VARIABLE( ANDROID_NO_UNDEFINED OBSOLETE_NO_UNDEFINED VALUES ON )
+__INIT_VARIABLE( ANDROID_FUNCTION_LEVEL_LINKING             VALUES ON )
+__INIT_VARIABLE( ANDROID_GOLD_LINKER                        VALUES ON )
+__INIT_VARIABLE( ANDROID_NOEXECSTACK                        VALUES ON )
+__INIT_VARIABLE( ANDROID_RELRO                              VALUES ON )
+
+set( ANDROID_NO_UNDEFINED           ${ANDROID_NO_UNDEFINED}           CACHE 
BOOL "Show all undefined symbols as linker errors" )
+set( ANDROID_SO_UNDEFINED           ${ANDROID_SO_UNDEFINED}           CACHE 
BOOL "Allows or disallows undefined symbols in shared libraries" )
+set( ANDROID_FUNCTION_LEVEL_LINKING ${ANDROID_FUNCTION_LEVEL_LINKING} CACHE 
BOOL "Allows or disallows undefined symbols in shared libraries" )
+set( ANDROID_GOLD_LINKER            ${ANDROID_GOLD_LINKER}            CACHE 
BOOL "Enables gold linker (only avaialble for NDK r8b for ARM and x86 
architectures on linux-86 and darwin-x86 hosts)" )
+set( ANDROID_NOEXECSTACK            ${ANDROID_NOEXECSTACK}            CACHE 
BOOL "Allows or disallows undefined symbols in shared libraries" )
+set( ANDROID_RELRO                  ${ANDROID_RELRO}                  CACHE 
BOOL "Enables RELRO - a memory corruption mitigation technique" )
+mark_as_advanced( ANDROID_NO_UNDEFINED ANDROID_SO_UNDEFINED 
ANDROID_FUNCTION_LEVEL_LINKING ANDROID_GOLD_LINKER ANDROID_NOEXECSTACK 
ANDROID_RELRO )
+
+# linker flags
+set( ANDROID_LINKER_FLAGS "" )
+
+if( ARMEABI_V7A )
+ # this is *required* to use the following linker flags that routes around
+ # a CPU bug in some Cortex-A8 implementations:
+ set( ANDROID_LINKER_FLAGS "${ANDROID_LINKER_FLAGS} -Wl,--fix-cortex-a8" )
+endif()
+
+if( ANDROID_NO_UNDEFINED )
+ if( MIPS )
+  # there is some sysroot-related problem in mips linker...
+  if( NOT ANDROID_SYSROOT MATCHES "[ ;\"]" )
+   set( ANDROID_LINKER_FLAGS "${ANDROID_LINKER_FLAGS} -Wl,--no-undefined 
-Wl,-rpath-link,${ANDROID_SYSROOT}/usr/lib" )
+  endif()
+ else()
+  set( ANDROID_LINKER_FLAGS "${ANDROID_LINKER_FLAGS} -Wl,--no-undefined" )
+ endif()
+endif()
+
+if( ANDROID_SO_UNDEFINED )
+ set( ANDROID_LINKER_FLAGS "${ANDROID_LINKER_FLAGS} 
-Wl,-allow-shlib-undefined" )
+endif()
+
+if( ANDROID_FUNCTION_LEVEL_LINKING )
+ set( ANDROID_CXX_FLAGS    "${ANDROID_CXX_FLAGS} -fdata-sections 
-ffunction-sections" )
+ set( ANDROID_LINKER_FLAGS "${ANDROID_LINKER_FLAGS} -Wl,--gc-sections" )
+endif()
+
+if( ANDROID_COMPILER_VERSION VERSION_EQUAL "4.6" )
+ if( ANDROID_GOLD_LINKER AND (CMAKE_HOST_UNIX OR ANDROID_NDK_RELEASE 
STRGREATER "r8b") AND (ARMEABI OR ARMEABI_V7A OR X86) )
+  set( ANDROID_LINKER_FLAGS "${ANDROID_LINKER_FLAGS} -fuse-ld=gold" )
+ elseif( ANDROID_NDK_RELEASE STRGREATER "r8b")
+  set( ANDROID_LINKER_FLAGS "${ANDROID_LINKER_FLAGS} -fuse-ld=bfd" )
+ elseif( ANDROID_NDK_RELEASE STREQUAL "r8b" AND ARMEABI AND NOT 
_CMAKE_IN_TRY_COMPILE )
+  message( WARNING "The default bfd linker from arm GCC 4.6 toolchain can fail 
with 'unresolvable R_ARM_THM_CALL relocation' error message. See 
https://code.google.com/p/android/issues/detail?id=35342
+  On Linux and OS X host platform you can workaround this problem using gold 
linker (default).
+  Rerun cmake with -DANDROID_GOLD_LINKER=ON option in case of problems.
+" )
+ endif()
+endif() # version 4.6
+
+if( ANDROID_NOEXECSTACK )
+ if( ANDROID_COMPILER_IS_CLANG )
+  set( ANDROID_CXX_FLAGS    "${ANDROID_CXX_FLAGS} -Xclang -mnoexecstack" )
+ else()
+  set( ANDROID_CXX_FLAGS    "${ANDROID_CXX_FLAGS} -Wa,--noexecstack" )
+ endif()
+ set( ANDROID_LINKER_FLAGS "${ANDROID_LINKER_FLAGS} -Wl,-z,noexecstack" )
+endif()
+
+if( ANDROID_RELRO )
+ set( ANDROID_LINKER_FLAGS "${ANDROID_LINKER_FLAGS} -Wl,-z,relro -Wl,-z,now" )
+endif()
+
+if( ANDROID_COMPILER_IS_CLANG )
+ set( ANDROID_CXX_FLAGS "-Qunused-arguments ${ANDROID_CXX_FLAGS}" )
+ if( ARMEABI_V7A AND NOT ANDROID_FORCE_ARM_BUILD )
+  set( ANDROID_CXX_FLAGS_RELEASE "-target thumbv7-none-linux-androideabi 
${ANDROID_CXX_FLAGS_RELEASE}" )
+  set( ANDROID_CXX_FLAGS_DEBUG   "-target ${ANDROID_LLVM_TRIPLE} 
${ANDROID_CXX_FLAGS_DEBUG}" )
+ else()
+  set( ANDROID_CXX_FLAGS "-target ${ANDROID_LLVM_TRIPLE} ${ANDROID_CXX_FLAGS}" 
)
+ endif()
+ if( BUILD_WITH_ANDROID_NDK )
+  set( ANDROID_CXX_FLAGS "-gcc-toolchain ${ANDROID_TOOLCHAIN_ROOT} 
${ANDROID_CXX_FLAGS}" )
+ endif()
+endif()
+
+# cache flags
+set( CMAKE_CXX_FLAGS           ""                        CACHE STRING "c++ 
flags" )
+set( CMAKE_C_FLAGS             ""                        CACHE STRING "c 
flags" )
+set( CMAKE_CXX_FLAGS_RELEASE   "-O3 -DNDEBUG"            CACHE STRING "c++ 
Release flags" )
+set( CMAKE_C_FLAGS_RELEASE     "-O3 -DNDEBUG"            CACHE STRING "c 
Release flags" )
+set( CMAKE_CXX_FLAGS_DEBUG     "-O0 -g -DDEBUG -D_DEBUG" CACHE STRING "c++ 
Debug flags" )
+set( CMAKE_C_FLAGS_DEBUG       "-O0 -g -DDEBUG -D_DEBUG" CACHE STRING "c Debug 
flags" )
+set( CMAKE_SHARED_LINKER_FLAGS ""                        CACHE STRING "shared 
linker flags" )
+set( CMAKE_MODULE_LINKER_FLAGS ""                        CACHE STRING "module 
linker flags" )
+set( CMAKE_EXE_LINKER_FLAGS    "-Wl,-z,nocopyreloc"      CACHE STRING 
"executable linker flags" )
+
+# put flags to cache (for debug purpose only)
+set( ANDROID_CXX_FLAGS         "${ANDROID_CXX_FLAGS}"         CACHE INTERNAL 
"Android specific c/c++ flags" )
+set( ANDROID_CXX_FLAGS_RELEASE "${ANDROID_CXX_FLAGS_RELEASE}" CACHE INTERNAL 
"Android specific c/c++ Release flags" )
+set( ANDROID_CXX_FLAGS_DEBUG   "${ANDROID_CXX_FLAGS_DEBUG}"   CACHE INTERNAL 
"Android specific c/c++ Debug flags" )
+set( ANDROID_LINKER_FLAGS      "${ANDROID_LINKER_FLAGS}"       CACHE INTERNAL 
"Android specific c/c++ linker flags" )
+
+# finish flags
+set( CMAKE_CXX_FLAGS           "${ANDROID_CXX_FLAGS} ${CMAKE_CXX_FLAGS}" )
+set( CMAKE_C_FLAGS             "${ANDROID_CXX_FLAGS} ${CMAKE_C_FLAGS}" )
+set( CMAKE_CXX_FLAGS_RELEASE   "${ANDROID_CXX_FLAGS_RELEASE} 
${CMAKE_CXX_FLAGS_RELEASE}" )
+set( CMAKE_C_FLAGS_RELEASE     "${ANDROID_CXX_FLAGS_RELEASE} 
${CMAKE_C_FLAGS_RELEASE}" )
+set( CMAKE_CXX_FLAGS_DEBUG     "${ANDROID_CXX_FLAGS_DEBUG} 
${CMAKE_CXX_FLAGS_DEBUG}" )
+set( CMAKE_C_FLAGS_DEBUG       "${ANDROID_CXX_FLAGS_DEBUG} 
${CMAKE_C_FLAGS_DEBUG}" )
+set( CMAKE_SHARED_LINKER_FLAGS "${ANDROID_LINKER_FLAGS} 
${CMAKE_SHARED_LINKER_FLAGS}" )
+set( CMAKE_MODULE_LINKER_FLAGS "${ANDROID_LINKER_FLAGS} 
${CMAKE_MODULE_LINKER_FLAGS}" )
+set( CMAKE_EXE_LINKER_FLAGS    "-Wl,--dynamic-linker=/system/bin/linker 
${ANDROID_LINKER_FLAGS} ${CMAKE_EXE_LINKER_FLAGS}" )
+
+message(STATUS "-->>> Android C Flags: ${ANDROID_CXX_FLAGS}")
+message(STATUS "-->>> CMAKE C Flags: ${CMAKE_C_FLAGS}")
+
+if( MIPS AND BUILD_WITH_ANDROID_NDK AND ANDROID_NDK_RELEASE STREQUAL "r8" )
+ set( CMAKE_SHARED_LINKER_FLAGS 
"-Wl,-T,${ANDROID_NDK_TOOLCHAINS_PATH}/${ANDROID_GCC_TOOLCHAIN_NAME}/mipself.xsc
 ${CMAKE_SHARED_LINKER_FLAGS}" )
+ set( CMAKE_MODULE_LINKER_FLAGS 
"-Wl,-T,${ANDROID_NDK_TOOLCHAINS_PATH}/${ANDROID_GCC_TOOLCHAIN_NAME}/mipself.xsc
 ${CMAKE_MODULE_LINKER_FLAGS}" )
+ set( CMAKE_EXE_LINKER_FLAGS    
"-Wl,-T,${ANDROID_NDK_TOOLCHAINS_PATH}/${ANDROID_GCC_TOOLCHAIN_NAME}/mipself.x 
${CMAKE_EXE_LINKER_FLAGS}" )
+endif()
+
+# configure rtti
+if( DEFINED ANDROID_RTTI AND ANDROID_STL_FORCE_FEATURES )
+ if( ANDROID_RTTI )
+  set( CMAKE_CXX_FLAGS "-frtti ${CMAKE_CXX_FLAGS}" )
+ else()
+  set( CMAKE_CXX_FLAGS "-fno-rtti ${CMAKE_CXX_FLAGS}" )
+ endif()
+endif()
+
+# configure exceptios
+if( DEFINED ANDROID_EXCEPTIONS AND ANDROID_STL_FORCE_FEATURES )
+ if( ANDROID_EXCEPTIONS )
+  set( CMAKE_CXX_FLAGS "-fexceptions ${CMAKE_CXX_FLAGS}" )
+  set( CMAKE_C_FLAGS "-fexceptions ${CMAKE_C_FLAGS}" )
+ else()
+  set( CMAKE_CXX_FLAGS "-fno-exceptions ${CMAKE_CXX_FLAGS}" )
+  set( CMAKE_C_FLAGS "-fno-exceptions ${CMAKE_C_FLAGS}" )
+ endif()
+endif()
+
+# global includes and link directories
+include_directories( SYSTEM "${ANDROID_SYSROOT}/usr/include" 
${ANDROID_STL_INCLUDE_DIRS} )
+get_filename_component(__android_install_path 
"${CMAKE_INSTALL_PREFIX}/libs/${ANDROID_NDK_ABI_NAME}" ABSOLUTE) # avoid 
CMP0015 policy warning
+link_directories( "${__android_install_path}" )
+
+# detect if need link crtbegin_so.o explicitly
+if( NOT DEFINED ANDROID_EXPLICIT_CRT_LINK )
+ set( __cmd "${CMAKE_CXX_CREATE_SHARED_LIBRARY}" )
+ string( REPLACE "<CMAKE_CXX_COMPILER>" "${CMAKE_CXX_COMPILER} 
${CMAKE_CXX_COMPILER_ARG1}" __cmd "${__cmd}" )
+ string( REPLACE "<CMAKE_C_COMPILER>"   "${CMAKE_C_COMPILER} 
${CMAKE_C_COMPILER_ARG1}"   __cmd "${__cmd}" )
+ string( REPLACE "<CMAKE_SHARED_LIBRARY_CXX_FLAGS>" "${CMAKE_CXX_FLAGS}" __cmd 
"${__cmd}" )
+ string( REPLACE "<LANGUAGE_COMPILE_FLAGS>" "" __cmd "${__cmd}" )
+ string( REPLACE "<LINK_FLAGS>" "${CMAKE_SHARED_LINKER_FLAGS}" __cmd 
"${__cmd}" )
+ string( REPLACE "<CMAKE_SHARED_LIBRARY_CREATE_CXX_FLAGS>" "-shared" __cmd 
"${__cmd}" )
+ string( REPLACE "<CMAKE_SHARED_LIBRARY_SONAME_CXX_FLAG>" "" __cmd "${__cmd}" )
+ string( REPLACE "<TARGET_SONAME>" "" __cmd "${__cmd}" )
+ string( REPLACE "<TARGET>" 
"${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/toolchain_crtlink_test.so" __cmd 
"${__cmd}" )
+ string( REPLACE "<OBJECTS>" "\"${ANDROID_SYSROOT}/usr/lib/crtbegin_so.o\"" 
__cmd "${__cmd}" )
+ string( REPLACE "<LINK_LIBRARIES>" "" __cmd "${__cmd}" )
+ separate_arguments( __cmd )
+ foreach( __var ANDROID_NDK ANDROID_NDK_TOOLCHAINS_PATH 
ANDROID_STANDALONE_TOOLCHAIN )
+  if( ${__var} )
+   set( __tmp "${${__var}}" )
+   separate_arguments( __tmp )
+   string( REPLACE "${__tmp}" "${${__var}}" __cmd "${__cmd}")
+  endif()
+ endforeach()
+ string( REPLACE "'" "" __cmd "${__cmd}" )
+ string( REPLACE "\"" "" __cmd "${__cmd}" )
+ execute_process( COMMAND ${__cmd} RESULT_VARIABLE __cmd_result OUTPUT_QUIET 
ERROR_QUIET )
+ if( __cmd_result EQUAL 0 )
+  set( ANDROID_EXPLICIT_CRT_LINK ON )
+ else()
+  set( ANDROID_EXPLICIT_CRT_LINK OFF )
+ endif()
+endif()
+
+if( ANDROID_EXPLICIT_CRT_LINK )
+ set( CMAKE_CXX_CREATE_SHARED_LIBRARY "${CMAKE_CXX_CREATE_SHARED_LIBRARY} 
\"${ANDROID_SYSROOT}/usr/lib/crtbegin_so.o\"" )
+ set( CMAKE_CXX_CREATE_SHARED_MODULE  "${CMAKE_CXX_CREATE_SHARED_MODULE} 
\"${ANDROID_SYSROOT}/usr/lib/crtbegin_so.o\"" )
+endif()
+
+# setup output directories
+set( LIBRARY_OUTPUT_PATH_ROOT ${CMAKE_SOURCE_DIR} CACHE PATH "root for library 
output, set this to change where android libs are installed to" )
+set( CMAKE_INSTALL_PREFIX "${ANDROID_TOOLCHAIN_ROOT}/user" CACHE STRING "path 
for installing" )
+
+# copy shaed stl library to build directory
+if( NOT _CMAKE_IN_TRY_COMPILE AND __libstl MATCHES "[.]so$" )
+ get_filename_component( __libstlname "${__libstl}" NAME )
+ execute_process( COMMAND "${CMAKE_COMMAND}" -E copy_if_different 
"${__libstl}" "${LIBRARY_OUTPUT_PATH}/${__libstlname}" RESULT_VARIABLE 
__fileCopyProcess )
+ if( NOT __fileCopyProcess EQUAL 0 OR NOT EXISTS 
"${LIBRARY_OUTPUT_PATH}/${__libstlname}")
+  message( SEND_ERROR "Failed copying of ${__libstl} to the 
${LIBRARY_OUTPUT_PATH}/${__libstlname}" )
+ endif()
+ unset( __fileCopyProcess )
+ unset( __libstlname )
+endif()
+
+
+# set these global flags for cmake client scripts to change behavior
+set( ANDROID True )
+set( BUILD_ANDROID True )
+
+# where is the target environment
+set( CMAKE_FIND_ROOT_PATH "${ANDROID_TOOLCHAIN_ROOT}/bin" 
"${ANDROID_TOOLCHAIN_ROOT}/${ANDROID_TOOLCHAIN_MACHINE_NAME}" 
"${ANDROID_SYSROOT}" "${CMAKE_INSTALL_PREFIX}" "${CMAKE_INSTALL_PREFIX}/share" )
+
+set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM BOTH)
+set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY BOTH)
+set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE BOTH)
+
+# macro to find packages on the host OS
+macro( find_host_package )
+ set( CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER )
+ set( CMAKE_FIND_ROOT_PATH_MODE_LIBRARY NEVER )
+ set( CMAKE_FIND_ROOT_PATH_MODE_INCLUDE NEVER )
+ if( CMAKE_HOST_WIN32 )
+  SET( WIN32 1 )
+  SET( UNIX )
+ elseif( CMAKE_HOST_APPLE )
+  SET( APPLE 1 )
+  SET( UNIX )
+ endif()
+ find_package( ${ARGN} )
+ SET( WIN32 )
+ SET( APPLE )
+ SET( UNIX 1 )
+ set( CMAKE_FIND_ROOT_PATH_MODE_PROGRAM ONLY )
+ set( CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY )
+ set( CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY )
+endmacro()
+
+
+# macro to find programs on the host OS
+macro( find_host_program )
+ set( CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER )
+ set( CMAKE_FIND_ROOT_PATH_MODE_LIBRARY NEVER )
+ set( CMAKE_FIND_ROOT_PATH_MODE_INCLUDE NEVER )
+ if( CMAKE_HOST_WIN32 )
+  SET( WIN32 1 )
+  SET( UNIX )
+ elseif( CMAKE_HOST_APPLE )
+  SET( APPLE 1 )
+  SET( UNIX )
+ endif()
+ find_program( ${ARGN} )
+ SET( WIN32 )
+ SET( APPLE )
+ SET( UNIX 1 )
+ set( CMAKE_FIND_ROOT_PATH_MODE_PROGRAM ONLY )
+ set( CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY )
+ set( CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY )
+endmacro()
+
+
+macro( ANDROID_GET_ABI_RAWNAME TOOLCHAIN_FLAG VAR )
+ if( "${TOOLCHAIN_FLAG}" STREQUAL "ARMEABI" )
+  set( ${VAR} "armeabi" )
+ elseif( "${TOOLCHAIN_FLAG}" STREQUAL "ARMEABI_V7A" )
+  set( ${VAR} "armeabi-v7a" )
+ elseif( "${TOOLCHAIN_FLAG}" STREQUAL "X86" )
+  set( ${VAR} "x86" )
+ elseif( "${TOOLCHAIN_FLAG}" STREQUAL "MIPS" )
+  set( ${VAR} "mips" )
+ else()
+  set( ${VAR} "unknown" )
+ endif()
+endmacro()
+
+
+# export toolchain settings for the try_compile() command
+if( NOT PROJECT_NAME STREQUAL "CMAKE_TRY_COMPILE" )
+ set( __toolchain_config "")
+ foreach( __var NDK_CCACHE  LIBRARY_OUTPUT_PATH_ROOT  ANDROID_FORBID_SYGWIN  
ANDROID_SET_OBSOLETE_VARIABLES
+                ANDROID_NDK_HOST_X64
+                ANDROID_NDK
+                ANDROID_NDK_LAYOUT
+                ANDROID_STANDALONE_TOOLCHAIN
+                ANDROID_TOOLCHAIN_NAME
+                ANDROID_ABI
+                ANDROID_NATIVE_API_LEVEL
+                ANDROID_STL
+                ANDROID_STL_FORCE_FEATURES
+                ANDROID_FORCE_ARM_BUILD
+                ANDROID_NO_UNDEFINED
+                ANDROID_SO_UNDEFINED
+                ANDROID_FUNCTION_LEVEL_LINKING
+                ANDROID_GOLD_LINKER
+                ANDROID_NOEXECSTACK
+                ANDROID_RELRO
+                ANDROID_LIBM_PATH
+                ANDROID_EXPLICIT_CRT_LINK
+                )
+  if( DEFINED ${__var} )
+   if( "${__var}" MATCHES " ")
+    set( __toolchain_config "${__toolchain_config}set( ${__var} 
\"${${__var}}\" CACHE INTERNAL \"\" )\n" )
+   else()
+    set( __toolchain_config "${__toolchain_config}set( ${__var} ${${__var}} 
CACHE INTERNAL \"\" )\n" )
+   endif()
+  endif()
+ endforeach()
+ file( WRITE 
"${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/android.toolchain.config.cmake" 
"${__toolchain_config}" )
+ unset( __toolchain_config )
+endif()
+
+
+# force cmake to produce / instead of \ in build commands for Ninja generator
+if( CMAKE_GENERATOR MATCHES "Ninja" AND CMAKE_HOST_WIN32 )
+ # it is a bad hack after all
+ # CMake generates Ninja makefiles with UNIX paths only if it thinks that we 
are going to build with MinGW
+ set( CMAKE_COMPILER_IS_MINGW TRUE ) # tell CMake that we are MinGW
+ set( CMAKE_CROSSCOMPILING TRUE )    # stop recursion
+ enable_language( C )
+ enable_language( CXX )
+ # unset( CMAKE_COMPILER_IS_MINGW ) # can't unset because CMake does not 
convert back-slashes in response files without it
+ unset( MINGW )
+endif()
+
+
+# set some obsolete variables for backward compatibility
+set( ANDROID_SET_OBSOLETE_VARIABLES ON CACHE BOOL "Define obsolete 
Andrid-specific cmake variables" )
+mark_as_advanced( ANDROID_SET_OBSOLETE_VARIABLES )
+if( ANDROID_SET_OBSOLETE_VARIABLES )
+ set( ANDROID_API_LEVEL ${ANDROID_NATIVE_API_LEVEL} )
+ set( ARM_TARGET "${ANDROID_ABI}" )
+ set( ARMEABI_NDK_NAME "${ANDROID_NDK_ABI_NAME}" )
+endif()
+
+
+# Variables controlling behavior or set by cmake toolchain:
+#   ANDROID_ABI : "armeabi-v7a" (default), "armeabi", "armeabi-v7a with NEON", 
"armeabi-v7a with VFPV3", "armeabi-v6 with VFP", "x86", "mips"
+#   ANDROID_NATIVE_API_LEVEL : 3,4,5,8,9,14 (depends on NDK version)
+#   ANDROID_STL : 
gnustl_static/gnustl_shared/stlport_static/stlport_shared/gabi++_static/gabi++_shared/system_re/system/none
+#   ANDROID_FORBID_SYGWIN : ON/OFF
+#   ANDROID_NO_UNDEFINED : ON/OFF
+#   ANDROID_SO_UNDEFINED : OFF/ON  (default depends on NDK version)
+#   ANDROID_FUNCTION_LEVEL_LINKING : ON/OFF
+#   ANDROID_GOLD_LINKER : ON/OFF
+#   ANDROID_NOEXECSTACK : ON/OFF
+#   ANDROID_RELRO : ON/OFF
+#   ANDROID_FORCE_ARM_BUILD : ON/OFF
+#   ANDROID_STL_FORCE_FEATURES : ON/OFF
+#   ANDROID_SET_OBSOLETE_VARIABLES : ON/OFF
+# Can be set only at the first run:
+#   ANDROID_NDK
+#   ANDROID_STANDALONE_TOOLCHAIN
+#   ANDROID_TOOLCHAIN_NAME : the NDK name of compiler toolchain
+#   ANDROID_NDK_HOST_X64 : try to use x86_64 toolchain (default for x64 host 
systems)
+#   ANDROID_NDK_LAYOUT : the inner NDK structure (RELEASE, LINARO, ANDROID)
+#   LIBRARY_OUTPUT_PATH_ROOT : <any valid path>
+#   NDK_CCACHE : <path to your ccache executable>
+# Obsolete:
+#   ANDROID_API_LEVEL : superseded by ANDROID_NATIVE_API_LEVEL
+#   ARM_TARGET : superseded by ANDROID_ABI
+#   ARM_TARGETS : superseded by ANDROID_ABI (can be set only)
+#   ANDROID_NDK_TOOLCHAIN_ROOT : superseded by ANDROID_STANDALONE_TOOLCHAIN 
(can be set only)
+#   ANDROID_USE_STLPORT : superseded by ANDROID_STL=stlport_static
+#   ANDROID_LEVEL : superseded by ANDROID_NATIVE_API_LEVEL (completely removed)
+#
+# Primary read-only variables:
+#   ANDROID : always TRUE
+#   ARMEABI : TRUE for arm v6 and older devices
+#   ARMEABI_V6 : TRUE for arm v6
+#   ARMEABI_V7A : TRUE for arm v7a
+#   NEON : TRUE if NEON unit is enabled
+#   VFPV3 : TRUE if VFP version 3 is enabled
+#   X86 : TRUE if configured for x86
+#   MIPS : TRUE if configured for mips
+#   BUILD_ANDROID : always TRUE
+#   BUILD_WITH_ANDROID_NDK : TRUE if NDK is used
+#   BUILD_WITH_STANDALONE_TOOLCHAIN : TRUE if standalone toolchain is used
+#   ANDROID_NDK_HOST_SYSTEM_NAME : "windows", "linux-x86" or "darwin-x86" 
depending on host platform
+#   ANDROID_NDK_ABI_NAME : "armeabi", "armeabi-v7a", "x86" or "mips" depending 
on ANDROID_ABI
+#   ANDROID_NDK_RELEASE : one of r5, r5b, r5c, r6, r6b, r7, r7b, r7c, r8, r8b, 
r8c, r8d, r8e, r9, r9b, r9c, r9d; set only for NDK
+#   ANDROID_ARCH_NAME : "arm" or "x86" or "mips" depending on ANDROID_ABI
+#   ANDROID_SYSROOT : path to the compiler sysroot
+#   TOOL_OS_SUFFIX : "" or ".exe" depending on host platform
+#   ANDROID_COMPILER_IS_CLANG : TRUE if clang compiler is used
+# Obsolete:
+#   ARMEABI_NDK_NAME : superseded by ANDROID_NDK_ABI_NAME
+#
+# Secondary (less stable) read-only variables:
+#   ANDROID_COMPILER_VERSION : GCC version used
+#   ANDROID_CXX_FLAGS : C/C++ compiler flags required by Android platform
+#   ANDROID_SUPPORTED_ABIS : list of currently allowed values for ANDROID_ABI
+#   ANDROID_TOOLCHAIN_MACHINE_NAME : "arm-linux-androideabi", "arm-eabi" or 
"i686-android-linux"
+#   ANDROID_TOOLCHAIN_ROOT : path to the top level of toolchain (standalone or 
placed inside NDK)
+#   ANDROID_CLANG_TOOLCHAIN_ROOT : path to clang tools
+#   ANDROID_SUPPORTED_NATIVE_API_LEVELS : list of native API levels found 
inside NDK
+#   ANDROID_STL_INCLUDE_DIRS : stl include paths
+#   ANDROID_RTTI : if rtti is enabled by the runtime
+#   ANDROID_EXCEPTIONS : if exceptions are enabled by the runtime
+#   ANDROID_GCC_TOOLCHAIN_NAME : read-only, differs from 
ANDROID_TOOLCHAIN_NAME only if clang is used
+#   ANDROID_CLANG_VERSION : version of clang compiler if clang is used
+#   ANDROID_LIBM_PATH : path to libm.so (set to something like 
$(TOP)/out/target/product/<product_name>/obj/lib/libm.so) to workaround 
unresolved `sincos`
+#
+# Defaults:
+#   ANDROID_DEFAULT_NDK_API_LEVEL
+#   ANDROID_DEFAULT_NDK_API_LEVEL_${ARCH}
+#   ANDROID_NDK_SEARCH_PATHS
+#   ANDROID_STANDALONE_TOOLCHAIN_SEARCH_PATH
+#   ANDROID_SUPPORTED_ABIS_${ARCH}
+#   ANDROID_SUPPORTED_NDK_VERSIONS