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android.toolchain.cmake
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# Copyright (c) 2010-2011, Ethan Rublee
# Copyright (c) 2011-2014, Andrey Kamaev
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
# 1. Redistributions of source code must retain the above copyright notice,
# this list of conditions and the following disclaimer.
#
# 2. Redistributions in binary form must reproduce the above copyright notice,
# this list of conditions and the following disclaimer in the documentation
# and/or other materials provided with the distribution.
#
# 3. Neither the name of the copyright holder nor the names of its
# contributors may be used to endorse or promote products derived from this
# software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
# ------------------------------------------------------------------------------
# Android CMake toolchain file, for use with the Android NDK r5-r9
# Requires cmake 2.6.3 or newer (2.8.5 or newer is recommended).
# See home page: https://github.com/taka-no-me/android-cmake
#
# The file is mantained by the OpenCV project. The latest version can be get at
# http://code.opencv.org/projects/opencv/repository/revisions/master/changes/android/android.toolchain.cmake
#
# Usage Linux:
# $ export ANDROID_NDK=/absolute/path/to/the/android-ndk
# $ mkdir build && cd build
# $ cmake -DCMAKE_TOOLCHAIN_FILE=path/to/the/android.toolchain.cmake ..
# $ make -j8
#
# Usage Linux (using standalone toolchain):
# $ export ANDROID_STANDALONE_TOOLCHAIN=/absolute/path/to/android-toolchain
# $ mkdir build && cd build
# $ cmake -DCMAKE_TOOLCHAIN_FILE=path/to/the/android.toolchain.cmake ..
# $ make -j8
#
# Usage Windows:
# You need native port of make to build your project.
# Android NDK r7 (or newer) already has make.exe on board.
# For older NDK you have to install it separately.
# For example, this one: http://gnuwin32.sourceforge.net/packages/make.htm
#
# $ SET ANDROID_NDK=C:\absolute\path\to\the\android-ndk
# $ mkdir build && cd build
# $ cmake.exe -G"MinGW Makefiles"
# -DCMAKE_TOOLCHAIN_FILE=path\to\the\android.toolchain.cmake
# -DCMAKE_MAKE_PROGRAM="%ANDROID_NDK%\prebuilt\windows\bin\make.exe" ..
# $ cmake.exe --build .
#
#
# Options (can be set as cmake parameters: -D<option_name>=<value>):
# ANDROID_NDK=/opt/android-ndk - path to the NDK root.
# Can be set as environment variable. Can be set only at first cmake run.
#
# ANDROID_STANDALONE_TOOLCHAIN=/opt/android-toolchain - path to the
# standalone toolchain. This option is not used if full NDK is found
# (ignored if ANDROID_NDK is set).
# Can be set as environment variable. Can be set only at first cmake run.
#
# ANDROID_ABI=armeabi-v7a - specifies the target Application Binary
# Interface (ABI). This option nearly matches to the APP_ABI variable
# used by ndk-build tool from Android NDK.
#
# Possible targets are:
# "armeabi" - matches to the NDK ABI with the same name.
# See ${ANDROID_NDK}/docs/CPU-ARCH-ABIS.html for the documentation.
# "armeabi-v7a" - matches to the NDK ABI with the same name.
# See ${ANDROID_NDK}/docs/CPU-ARCH-ABIS.html for the documentation.
# "armeabi-v7a with NEON" - same as armeabi-v7a, but
# sets NEON as floating-point unit
# "armeabi-v7a with VFPV3" - same as armeabi-v7a, but
# sets VFPV3 as floating-point unit (has 32 registers instead of 16).
# "armeabi-v6 with VFP" - tuned for ARMv6 processors having VFP.
# "x86" - matches to the NDK ABI with the same name.
# See ${ANDROID_NDK}/docs/CPU-ARCH-ABIS.html for the documentation.
# "mips" - matches to the NDK ABI with the same name.
# See ${ANDROID_NDK}/docs/CPU-ARCH-ABIS.html for the documentation.
#
# ANDROID_NATIVE_API_LEVEL=android-8 - level of Android API compile for.
# Option is read-only when standalone toolchain is used.
#
# ANDROID_TOOLCHAIN_NAME=arm-linux-androideabi-4.6 - the name of compiler
# toolchain to be used. The list of possible values depends on the NDK
# version. For NDK r8c the possible values are:
#
# * arm-linux-androideabi-4.4.3
# * arm-linux-androideabi-4.6
# * arm-linux-androideabi-clang3.1
# * mipsel-linux-android-4.4.3
# * mipsel-linux-android-4.6
# * mipsel-linux-android-clang3.1
# * x86-4.4.3
# * x86-4.6
# * x86-clang3.1
#
# ANDROID_FORCE_ARM_BUILD=OFF - set ON to generate 32-bit ARM instructions
# instead of Thumb. Is not available for "x86" (inapplicable) and
# "armeabi-v6 with VFP" (is forced to be ON) ABIs.
#
# ANDROID_NO_UNDEFINED=ON - set ON to show all undefined symbols as linker
# errors even if they are not used.
#
# ANDROID_SO_UNDEFINED=OFF - set ON to allow undefined symbols in shared
# libraries. Automatically turned for NDK r5x and r6x due to GLESv2
# problems.
#
# LIBRARY_OUTPUT_PATH_ROOT=${CMAKE_SOURCE_DIR} - where to output binary
# files. See additional details below.
#
# ANDROID_SET_OBSOLETE_VARIABLES=ON - if set, then toolchain defines some
# obsolete variables which were used by previous versions of this file for
# backward compatibility.
#
# ANDROID_STL=gnustl_static - specify the runtime to use.
#
# Possible values are:
# none -> Do not configure the runtime.
# system -> Use the default minimal system C++ runtime library.
# Implies -fno-rtti -fno-exceptions.
# Is not available for standalone toolchain.
# system_re -> Use the default minimal system C++ runtime library.
# Implies -frtti -fexceptions.
# Is not available for standalone toolchain.
# gabi++_static -> Use the GAbi++ runtime as a static library.
# Implies -frtti -fno-exceptions.
# Available for NDK r7 and newer.
# Is not available for standalone toolchain.
# gabi++_shared -> Use the GAbi++ runtime as a shared library.
# Implies -frtti -fno-exceptions.
# Available for NDK r7 and newer.
# Is not available for standalone toolchain.
# stlport_static -> Use the STLport runtime as a static library.
# Implies -fno-rtti -fno-exceptions for NDK before r7.
# Implies -frtti -fno-exceptions for NDK r7 and newer.
# Is not available for standalone toolchain.
# stlport_shared -> Use the STLport runtime as a shared library.
# Implies -fno-rtti -fno-exceptions for NDK before r7.
# Implies -frtti -fno-exceptions for NDK r7 and newer.
# Is not available for standalone toolchain.
# gnustl_static -> Use the GNU STL as a static library.
# Implies -frtti -fexceptions.
# gnustl_shared -> Use the GNU STL as a shared library.
# Implies -frtti -fno-exceptions.
# Available for NDK r7b and newer.
# Silently degrades to gnustl_static if not available.
#
# ANDROID_STL_FORCE_FEATURES=ON - turn rtti and exceptions support based on
# chosen runtime. If disabled, then the user is responsible for settings
# these options.
#
# What?:
# android-cmake toolchain searches for NDK/toolchain in the following order:
# ANDROID_NDK - cmake parameter
# ANDROID_NDK - environment variable
# ANDROID_STANDALONE_TOOLCHAIN - cmake parameter
# ANDROID_STANDALONE_TOOLCHAIN - environment variable
# ANDROID_NDK - default locations
# ANDROID_STANDALONE_TOOLCHAIN - default locations
#
# Make sure to do the following in your scripts:
# SET( CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${my_cxx_flags}" )
# SET( CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${my_cxx_flags}" )
# The flags will be prepopulated with critical flags, so don't loose them.
# Also be aware that toolchain also sets configuration-specific compiler
# flags and linker flags.
#
# ANDROID and BUILD_ANDROID will be set to true, you may test any of these
# variables to make necessary Android-specific configuration changes.
#
# Also ARMEABI or ARMEABI_V7A or X86 or MIPS will be set true, mutually
# exclusive. NEON option will be set true if VFP is set to NEON.
#
# LIBRARY_OUTPUT_PATH_ROOT should be set in cache to determine where Android
# libraries will be installed.
# Default is ${CMAKE_SOURCE_DIR}, and the android libs will always be
# under the ${LIBRARY_OUTPUT_PATH_ROOT}/libs/${ANDROID_NDK_ABI_NAME}
# (depending on the target ABI). This is convenient for Android packaging.
#
# Change Log:
# - initial version December 2010
# - April 2011
# [+] added possibility to build with NDK (without standalone toolchain)
# [+] support cross-compilation on Windows (native, no cygwin support)
# [+] added compiler option to force "char" type to be signed
# [+] added toolchain option to compile to 32-bit ARM instructions
# [+] added toolchain option to disable SWIG search
# [+] added platform "armeabi-v7a with VFPV3"
# [~] ARM_TARGETS renamed to ARM_TARGET
# [+] EXECUTABLE_OUTPUT_PATH is set by toolchain (required on Windows)
# [~] Fixed bug with ANDROID_API_LEVEL variable
# [~] turn off SWIG search if it is not found first time
# - May 2011
# [~] ANDROID_LEVEL is renamed to ANDROID_API_LEVEL
# [+] ANDROID_API_LEVEL is detected by toolchain if not specified
# [~] added guard to prevent changing of output directories on the first
# cmake pass
# [~] toolchain exits with error if ARM_TARGET is not recognized
# - June 2011
# [~] default NDK path is updated for version r5c
# [+] variable CMAKE_SYSTEM_PROCESSOR is set based on ARM_TARGET
# [~] toolchain install directory is added to linker paths
# [-] removed SWIG-related stuff from toolchain
# [+] added macro find_host_package, find_host_program to search
# packages/programs on the host system
# [~] fixed path to STL library
# - July 2011
# [~] fixed options caching
# [~] search for all supported NDK versions
# [~] allowed spaces in NDK path
# - September 2011
# [~] updated for NDK r6b
# - November 2011
# [*] rewritten for NDK r7
# [+] x86 toolchain support (experimental)
# [+] added "armeabi-v6 with VFP" ABI for ARMv6 processors.
# [~] improved compiler and linker flags management
# [+] support different build flags for Release and Debug configurations
# [~] by default compiler flags the same as used by ndk-build (but only
# where reasonable)
# [~] ANDROID_NDK_TOOLCHAIN_ROOT is splitted to ANDROID_STANDALONE_TOOLCHAIN
# and ANDROID_TOOLCHAIN_ROOT
# [~] ARM_TARGET is renamed to ANDROID_ABI
# [~] ARMEABI_NDK_NAME is renamed to ANDROID_NDK_ABI_NAME
# [~] ANDROID_API_LEVEL is renamed to ANDROID_NATIVE_API_LEVEL
# - January 2012
# [+] added stlport_static support (experimental)
# [+] added special check for cygwin
# [+] filtered out hidden files (starting with .) while globbing inside NDK
# [+] automatically applied GLESv2 linkage fix for NDK revisions 5-6
# [+] added ANDROID_GET_ABI_RAWNAME to get NDK ABI names by CMake flags
# - February 2012
# [+] updated for NDK r7b
# [~] fixed cmake try_compile() command
# [~] Fix for missing install_name_tool on OS X
# - March 2012
# [~] fixed incorrect C compiler flags
# [~] fixed CMAKE_SYSTEM_PROCESSOR change on ANDROID_ABI change
# [+] improved toolchain loading speed
# [+] added assembler language support (.S)
# [+] allowed preset search paths and extra search suffixes
# - April 2012
# [+] updated for NDK r7c
# [~] fixed most of problems with compiler/linker flags and caching
# [+] added option ANDROID_FUNCTION_LEVEL_LINKING
# - May 2012
# [+] updated for NDK r8
# [+] added mips architecture support
# - August 2012
# [+] updated for NDK r8b
# [~] all intermediate files generated by toolchain are moved to CMakeFiles
# [~] libstdc++ and libsupc are removed from explicit link libraries
# [+] added CCache support (via NDK_CCACHE environment or cmake variable)
# [+] added gold linker support for NDK r8b
# [~] fixed mips linker flags for NDK r8b
# - September 2012
# [+] added NDK release name detection (see ANDROID_NDK_RELEASE)
# [+] added support for all C++ runtimes from NDK
# (system, gabi++, stlport, gnustl)
# [+] improved warnings on known issues of NDKs
# [~] use gold linker as default if available (NDK r8b)
# [~] globally turned off rpath
# [~] compiler options are aligned with NDK r8b
# - October 2012
# [~] fixed C++ linking: explicitly link with math library (OpenCV #2426)
# - November 2012
# [+] updated for NDK r8c
# [+] added support for clang compiler
# - December 2012
# [+] suppress warning about unused CMAKE_TOOLCHAIN_FILE variable
# [+] adjust API level to closest compatible as NDK does
# [~] fixed ccache full path search
# [+] updated for NDK r8d
# [~] compiler options are aligned with NDK r8d
# - March 2013
# [+] updated for NDK r8e (x86 version)
# [+] support x86_64 version of NDK
# - April 2013
# [+] support non-release NDK layouts (from Linaro git and Android git)
# [~] automatically detect if explicit link to crtbegin_*.o is needed
# - June 2013
# [~] fixed stl include path for standalone toolchain made by NDK >= r8c
# - July 2013
# [+] updated for NDK r9
# - November 2013
# [+] updated for NDK r9b
# - December 2013
# [+] updated for NDK r9c
# - January 2014
# [~] fix copying of shared STL
# - April 2014
# [+] updated for NDK r9d
# ------------------------------------------------------------------------------
cmake_minimum_required( VERSION 2.6.3 )
if( DEFINED CMAKE_CROSSCOMPILING )
# subsequent toolchain loading is not really needed
return()
endif()
if( CMAKE_TOOLCHAIN_FILE )
# touch toolchain variable only to suppress "unused variable" warning
endif()
get_property( _CMAKE_IN_TRY_COMPILE GLOBAL PROPERTY IN_TRY_COMPILE )
if( _CMAKE_IN_TRY_COMPILE )
include( "${CMAKE_CURRENT_SOURCE_DIR}/../android.toolchain.config.cmake" OPTIONAL )
endif()
# this one is important
set( CMAKE_SYSTEM_NAME Linux )
# this one not so much
set( CMAKE_SYSTEM_VERSION 1 )
# rpath makes low sence 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 ${ANDROID_EXTRA_NDK_VERSIONS} -r9d -r9c -r9b -r9 -r8e -r8d -r8c -r8b -r8 -r7c -r7b -r7 -r6b -r6 -r5c -r5b -r5 "" )
if(NOT DEFINED ANDROID_NDK_SEARCH_PATHS)
if( CMAKE_HOST_WIN32 )
file( TO_CMAKE_PATH "$ENV{PROGRAMFILES}" ANDROID_NDK_SEARCH_PATHS )
set( ANDROID_NDK_SEARCH_PATHS "${ANDROID_NDK_SEARCH_PATHS}/android-ndk" "$ENV{SystemDrive}/NVPACK/android-ndk" )
else()
file( TO_CMAKE_PATH "$ENV{HOME}" ANDROID_NDK_SEARCH_PATHS )
set( ANDROID_NDK_SEARCH_PATHS /opt/android-ndk "${ANDROID_NDK_SEARCH_PATHS}/NVPACK/android-ndk" )
endif()
endif()
if(NOT DEFINED ANDROID_STANDALONE_TOOLCHAIN_SEARCH_PATH)
set( ANDROID_STANDALONE_TOOLCHAIN_SEARCH_PATH /opt/android-toolchain )
endif()
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 8 )
set( ANDROID_DEFAULT_NDK_API_LEVEL_x86 9 )
set( ANDROID_DEFAULT_NDK_API_LEVEL_mips 9 )
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 )
if( NOT 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_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 ${ANDROID_STANDALONE_TOOLCHAIN}" )
message( STATUS " If you prefer to use a different location, please define the variable: ANDROID_STANDALONE_TOOLCHAIN" )
endif( ANDROID_STANDALONE_TOOLCHAIN )
endif( ANDROID_NDK )
endif( NOT ANDROID_STANDALONE_TOOLCHAIN )
endif( NOT ANDROID_NDK )
# remember found paths
if( ANDROID_NDK )
get_filename_component( ANDROID_NDK "${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()
elseif( 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 )
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 \"${ANDROID_ARCH_NAME}\" platform." )
endif()
else()
set( __toolchainIdx -1 )
set( __applicableToolchains "" )
set( __toolchainMaxVersion "0.0.0" )
list( LENGTH __availableToolchains __availableToolchainsCount )
math( EXPR __availableToolchainsCount "${__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" )