# POSSIBILITY OF SUCH DAMAGE.
# ------------------------------------------------------------------------------
-# Android CMake toolchain file, for use with the Android NDK r5-r9
+# Android CMake toolchain file, for use with the Android NDK r5-r10d
# 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
#
# Usage Windows:
# You need native port of make to build your project.
-# Android NDK r7 (or newer) already has make.exe on board.
+# Android NDK r7 (and 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
#
# 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" - ARMv5TE based CPU with software floating point operations
+# "armeabi-v7a" - ARMv7 based devices with hardware FPU instructions
+# this ABI target is used by default
# "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.
+# sets VFPV3 as floating-point unit (has 32 registers instead of 16)
+# "armeabi-v6 with VFP" - tuned for ARMv6 processors having VFP
+# "x86" - IA-32 instruction set
+# "mips" - MIPS32 instruction set
+#
+# 64-bit ABIs for NDK r10 and newer:
+# "arm64-v8a" - ARMv8 AArch64 instruction set
+# "x86_64" - Intel64 instruction set (r1)
+# "mips64" - MIPS64 instruction set (r6)
#
# ANDROID_NATIVE_API_LEVEL=android-8 - level of Android API compile for.
# Option is read-only when standalone toolchain is used.
+# Note: building for "android-L" requires explicit configuration.
#
-# ANDROID_TOOLCHAIN_NAME=arm-linux-androideabi-4.6 - the name of compiler
+# ANDROID_TOOLCHAIN_NAME=arm-linux-androideabi-4.9 - 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:
+# version. For NDK r10c the possible values are:
#
-# * arm-linux-androideabi-4.4.3
+# * aarch64-linux-android-4.9
+# * aarch64-linux-android-clang3.4
+# * aarch64-linux-android-clang3.5
# * arm-linux-androideabi-4.6
-# * arm-linux-androideabi-clang3.1
-# * mipsel-linux-android-4.4.3
+# * arm-linux-androideabi-4.8
+# * arm-linux-androideabi-4.9 (default)
+# * arm-linux-androideabi-clang3.4
+# * arm-linux-androideabi-clang3.5
+# * mips64el-linux-android-4.9
+# * mips64el-linux-android-clang3.4
+# * mips64el-linux-android-clang3.5
# * mipsel-linux-android-4.6
-# * mipsel-linux-android-clang3.1
-# * x86-4.4.3
+# * mipsel-linux-android-4.8
+# * mipsel-linux-android-4.9
+# * mipsel-linux-android-clang3.4
+# * mipsel-linux-android-clang3.5
# * x86-4.6
-# * x86-clang3.1
+# * x86-4.8
+# * x86-4.9
+# * x86-clang3.4
+# * x86-clang3.5
+# * x86_64-4.9
+# * x86_64-clang3.4
+# * x86_64-clang3.5
#
# ANDROID_FORCE_ARM_BUILD=OFF - set ON to generate 32-bit ARM instructions
# instead of Thumb. Is not available for "x86" (inapplicable) and
# 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.
+# Also ARMEABI or ARMEABI_V7A or X86 or MIPS or ARM64_V8A or X86_64 or MIPS64
+# 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.
# 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
-# - October 2014
-# [~] fix NATIVE_API_LEVEL detection for NDK r10
# ------------------------------------------------------------------------------
cmake_minimum_required( VERSION 2.6.3 )
endif()
if( CMAKE_TOOLCHAIN_FILE )
- # touch toolchain variable only to suppress "unused variable" warning
+ # touch toolchain variable to suppress "unused variable" warning
endif()
+# inherit settings in recursive loads
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 )
+if( CMAKE_VERSION VERSION_GREATER "3.0.99" )
+ set( CMAKE_SYSTEM_NAME Android )
+else()
+ set( CMAKE_SYSTEM_NAME Linux )
+endif()
+
# this one not so much
set( CMAKE_SYSTEM_VERSION 1 )
# rpath makes low sence for Android
+set( CMAKE_SHARED_LIBRARY_RUNTIME_C_FLAG "" )
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} -r9c -r9b -r9 -r8e -r8d -r8c -r8b -r8 -r7c -r7b -r7 -r6b -r6 -r5c -r5b -r5 "" )
+# NDK search paths
+set( ANDROID_SUPPORTED_NDK_VERSIONS ${ANDROID_EXTRA_NDK_VERSIONS} -r10d -r10c -r10b -r10 -r9d -r9c -r9b -r9 -r8e -r8d -r8c -r8b -r8 -r7c -r7b -r7 -r6b -r6 -r5c -r5b -r5 "" )
if(NOT DEFINED ANDROID_NDK_SEARCH_PATHS)
if( CMAKE_HOST_WIN32 )
file( TO_CMAKE_PATH "$ENV{PROGRAMFILES}" ANDROID_NDK_SEARCH_PATHS )
set( ANDROID_STANDALONE_TOOLCHAIN_SEARCH_PATH /opt/android-toolchain )
endif()
+# known ABIs
set( ANDROID_SUPPORTED_ABIS_arm "armeabi-v7a;armeabi;armeabi-v7a with NEON;armeabi-v7a with VFPV3;armeabi-v6 with VFP" )
+set( ANDROID_SUPPORTED_ABIS_arm64 "arm64-v8a" )
set( ANDROID_SUPPORTED_ABIS_x86 "x86" )
-set( ANDROID_SUPPORTED_ABIS_mipsel "mips" )
+set( ANDROID_SUPPORTED_ABIS_x86_64 "x86_64" )
+set( ANDROID_SUPPORTED_ABIS_mips "mips" )
+set( ANDROID_SUPPORTED_ABIS_mips64 "mips64" )
+# API level defaults
set( ANDROID_DEFAULT_NDK_API_LEVEL 8 )
+set( ANDROID_DEFAULT_NDK_API_LEVEL_arm64 21 )
set( ANDROID_DEFAULT_NDK_API_LEVEL_x86 9 )
+set( ANDROID_DEFAULT_NDK_API_LEVEL_x86_64 21 )
set( ANDROID_DEFAULT_NDK_API_LEVEL_mips 9 )
+set( ANDROID_DEFAULT_NDK_API_LEVEL_mips64 21 )
macro( __LIST_FILTER listvar regex )
endmacro()
macro( __DETECT_NATIVE_API_LEVEL _var _path )
- list(APPEND __ndkApiLevelRegexList
- "^[\t ]*#define[\t ]+__ANDROID_API__[\t ]+([0-9])[\t ]*$"
- "^[\t ]*#define[\t ]+__ANDROID_API__[\t ]+[0-9]+[\t ]+.*([A-Z]).*$"
- )
- foreach( __ndkApiLevelRegex IN LISTS __ndkApiLevelRegexList)
- FILE( STRINGS ${_path} __apiFileContent REGEX "${__ndkApiLevelRegex}" )
- if( __apiFileContent )
- string( REGEX REPLACE "${__ndkApiLevelRegex}" "\\1" ${_var} "${__apiFileContent}" )
- break()
- endif()
- endforeach()
- unset( __ndkApiLevelRegexList )
+ 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()
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}" )
+ 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()
+ string( REGEX REPLACE "r([0-9]+)([a-z]?)" "\\1*1000" ANDROID_NDK_RELEASE_NUM "${ANDROID_NDK_RELEASE}" )
+ string( FIND " abcdefghijklmnopqastuvwxyz" "${CMAKE_MATCH_2}" __ndkReleaseLetterNum )
+ math( EXPR ANDROID_NDK_RELEASE_NUM "${ANDROID_NDK_RELEASE_NUM}+${__ndkReleaseLetterNum}" )
elseif( ANDROID_STANDALONE_TOOLCHAIN )
get_filename_component( ANDROID_STANDALONE_TOOLCHAIN "${ANDROID_STANDALONE_TOOLCHAIN}" ABSOLUTE )
# try to detect change
if( NOT __availableToolchainMachines )
message( FATAL_ERROR "Could not determine machine name of your toolchain. Probably your Android standalone toolchain is broken." )
endif()
- if( __availableToolchainMachines MATCHES i686 )
+ if( __availableToolchainMachines MATCHES x86_64 )
+ set( __availableToolchainArchs "x86_64" )
+ elseif( __availableToolchainMachines MATCHES i686 )
set( __availableToolchainArchs "x86" )
+ elseif( __availableToolchainMachines MATCHES aarch64 )
+ set( __availableToolchainArchs "arm64" )
elseif( __availableToolchainMachines MATCHES arm )
set( __availableToolchainArchs "arm" )
+ elseif( __availableToolchainMachines MATCHES mips64el )
+ set( __availableToolchainArchs "mips64" )
elseif( __availableToolchainMachines MATCHES mipsel )
- set( __availableToolchainArchs "mipsel" )
+ set( __availableToolchainArchs "mips" )
endif()
execute_process( COMMAND "${ANDROID_STANDALONE_TOOLCHAIN}/bin/${__availableToolchainMachines}-gcc${TOOL_OS_SUFFIX}" -dumpversion
OUTPUT_VARIABLE __availableToolchainCompilerVersions OUTPUT_STRIP_TRAILING_WHITESPACE )
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 "${__toolchain}" )
+ SET( __toolchainVersionRegex "^TOOLCHAIN_VERSION[\t ]+:=[\t ]+(.*)$" )
+ FILE( STRINGS "${ANDROID_NDK_TOOLCHAINS_PATH}/${__toolchain}/setup.mk" __toolchainVersionStr REGEX "${__toolchainVersionRegex}" )
+ if( __toolchainVersionStr )
+ string( REGEX REPLACE "${__toolchainVersionRegex}" "\\1" __toolchainVersionStr "${__toolchainVersionStr}" )
+ string( REGEX REPLACE "-clang3[.][0-9]$" "-${__toolchainVersionStr}" __gcc_toolchain "${__toolchain}" )
+ else()
+ string( REGEX REPLACE "-clang3[.][0-9]$" "-4.6" __gcc_toolchain "${__toolchain}" )
+ endif()
+ unset( __toolchainVersionStr )
+ unset( __toolchainVersionRegex )
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 )
+ if( __machine MATCHES x86_64 )
+ set( __arch "x86_64" )
+ elseif( __machine MATCHES i686 )
set( __arch "x86" )
+ elseif( __machine MATCHES aarch64 )
+ set( __arch "arm64" )
elseif( __machine MATCHES arm )
set( __arch "arm" )
+ elseif( __machine MATCHES mips64el )
+ set( __arch "mips64" )
elseif( __machine MATCHES mipsel )
- set( __arch "mipsel" )
+ set( __arch "mips" )
+ else()
+ set( __arch "" )
+ endif()
+ #message("machine: !${__machine}!\narch: !${__arch}!\nversion: !${__version}!\ntoolchain: !${__toolchain}!\n")
+ if (__arch)
+ list( APPEND __availableToolchainMachines "${__machine}" )
+ list( APPEND __availableToolchainArchs "${__arch}" )
+ list( APPEND __availableToolchainCompilerVersions "${__version}" )
+ list( APPEND ${__availableToolchainsVar} "${__toolchain}" )
endif()
- list( APPEND __availableToolchainMachines "${__machine}" )
- list( APPEND __availableToolchainArchs "${__arch}" )
- list( APPEND __availableToolchainCompilerVersions "${__version}" )
- list( APPEND ${__availableToolchainsVar} "${__toolchain}" )
endif()
unset( __gcc_toolchain )
endforeach()
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 "x86_64" )
+ set( X86 true )
+ set( X86_64 true )
+ set( ANDROID_NDK_ABI_NAME "x86_64" )
+ set( ANDROID_ARCH_NAME "x86_64" )
+ set( CMAKE_SYSTEM_PROCESSOR "x86_64" )
+ set( ANDROID_LLVM_TRIPLE "x86_64-none-linux-android" )
+elseif( ANDROID_ABI STREQUAL "mips64" )
+ set( MIPS64 true )
+ set( ANDROID_NDK_ABI_NAME "mips64" )
+ set( ANDROID_ARCH_NAME "mips64" )
+ set( ANDROID_LLVM_TRIPLE "mips64el-none-linux-android" )
+ set( CMAKE_SYSTEM_PROCESSOR "mips64" )
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 "arm64-v8a" )
+ set( ARM64_V8A true )
+ set( ANDROID_NDK_ABI_NAME "arm64-v8a" )
+ set( ANDROID_ARCH_NAME "arm64" )
+ set( ANDROID_LLVM_TRIPLE "aarch64-none-linux-android" )
+ set( CMAKE_SYSTEM_PROCESSOR "aarch64" )
+ set( VFPV3 true )
+ set( NEON true )
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_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 )
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 )
To configure the toolchain set CMake variable ANDROID_TOOLCHAIN_NAME to one of the following values:\n${toolchains_list}\n" )
endif()
list( GET __availableToolchainArchs ${__toolchainIdx} __toolchainArch )
- if( NOT __toolchainArch STREQUAL ANDROID_ARCH_FULLNAME )
+ if( NOT __toolchainArch STREQUAL ANDROID_ARCH_NAME )
message( SEND_ERROR "Selected toolchain \"${ANDROID_TOOLCHAIN_NAME}\" is not able to compile binaries for the \"${ANDROID_ARCH_NAME}\" platform." )
endif()
else()
math( EXPR __availableToolchainsCount "${__availableToolchainsCount}-1" )
foreach( __idx RANGE ${__availableToolchainsCount} )
list( GET __availableToolchainArchs ${__idx} __toolchainArch )
- if( __toolchainArch STREQUAL ANDROID_ARCH_FULLNAME )
+ if( __toolchainArch STREQUAL ANDROID_ARCH_NAME )
list( GET __availableToolchainCompilerVersions ${__idx} __toolchainVersion )
string( REPLACE "x" "99" __toolchainVersion "${__toolchainVersion}")
if( __toolchainVersion VERSION_GREATER __toolchainMaxVersion )
# 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}" )
+string( REPLACE "android-" "" ANDROID_NATIVE_API_LEVEL "${ANDROID_NATIVE_API_LEVEL}" )
+string( STRIP "${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 )
+ if( (__level LESS ANDROID_NATIVE_API_LEVEL OR __level STREQUAL ANDROID_NATIVE_API_LEVEL) AND NOT __level LESS __real_api_level )
set( __real_api_level ${__level} )
endif()
endforeach()
-if( __real_api_level AND NOT ANDROID_NATIVE_API_LEVEL EQUAL __real_api_level )
+if( __real_api_level AND NOT ANDROID_NATIVE_API_LEVEL STREQUAL __real_api_level )
message( STATUS "Adjusting Android API level 'android-${ANDROID_NATIVE_API_LEVEL}' to 'android-${__real_api_level}'")
set( ANDROID_NATIVE_API_LEVEL ${__real_api_level} )
endif()
else()
if( BUILD_WITH_ANDROID_NDK )
__DETECT_NATIVE_API_LEVEL( __realApiLevel "${ANDROID_NDK}/platforms/android-${ANDROID_NATIVE_API_LEVEL}/arch-${ANDROID_ARCH_NAME}/usr/include/android/api-level.h" )
- if( NOT __realApiLevel STREQUAL ANDROID_NATIVE_API_LEVEL )
+ if( NOT __realApiLevel EQUAL ANDROID_NATIVE_API_LEVEL AND NOT __realApiLevel GREATER 9000 )
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 )
# 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}} )
+ list( SORT ANDROID_SUPPORTED_ABIS_${ANDROID_ARCH_NAME} )
+ set_property( CACHE ANDROID_ABI PROPERTY STRINGS ${ANDROID_SUPPORTED_ABIS_${ANDROID_ARCH_NAME}} )
endif()
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}" )
+ string( REGEX REPLACE "-clang${ANDROID_CLANG_VERSION}$" "-${ANDROID_COMPILER_VERSION}" ANDROID_GCC_TOOLCHAIN_NAME "${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_EXCEPTIONS ON )
set( ANDROID_STL_INCLUDE_DIRS "${ANDROID_NDK}/sources/cxx-stl/system/include" )
elseif( ANDROID_STL MATCHES "gabi" )
- if( ANDROID_NDK_RELEASE STRLESS "r7" )
+ if( ANDROID_NDK_RELEASE_NUM LESS 7000 ) # before r7
message( FATAL_ERROR "gabi++ is not awailable in your NDK. You have to upgrade to NDK r7 or newer to use gabi++.")
endif()
set( ANDROID_RTTI ON )
set( ANDROID_STL_INCLUDE_DIRS "${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" )
+ if( NOT ANDROID_NDK_RELEASE_NUM LESS 8004 ) # before r8d
set( ANDROID_EXCEPTIONS ON )
else()
set( ANDROID_EXCEPTIONS OFF )
endif()
- if( ANDROID_NDK_RELEASE STRLESS "r7" )
+ if( ANDROID_NDK_RELEASE_NUM LESS 7000 ) # before r7
set( ANDROID_RTTI OFF )
else()
set( ANDROID_RTTI ON )
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" )
+ set( ANDROID_STL_INCLUDE_DIRS "${__libstl}/include" "${__libstl}/libs/${ANDROID_NDK_ABI_NAME}/include" "${__libstl}/include/backward" )
if( EXISTS "${__libstl}/libs/${ANDROID_NDK_ABI_NAME}/libgnustl_static.a" )
set( __libstl "${__libstl}/libs/${ANDROID_NDK_ABI_NAME}/libgnustl_static.a" )
else()
include( CMakeForceCompiler )
CMAKE_FORCE_C_COMPILER( "${CMAKE_C_COMPILER}" GNU )
if( ANDROID_COMPILER_IS_CLANG )
- set( CMAKE_C_COMPILER_ID Clang)
+ set( CMAKE_C_COMPILER_ID Clang )
endif()
set( CMAKE_C_PLATFORM_ID Linux )
-set( CMAKE_C_SIZEOF_DATA_PTR 4 )
+if( X86_64 OR MIPS64 OR ARM64_V8A )
+ set( CMAKE_C_SIZEOF_DATA_PTR 8 )
+else()
+ set( CMAKE_C_SIZEOF_DATA_PTR 4 )
+endif()
set( CMAKE_C_HAS_ISYSROOT 1 )
set( CMAKE_C_COMPILER_ABI ELF )
CMAKE_FORCE_CXX_COMPILER( "${CMAKE_CXX_COMPILER}" GNU )
set( CMAKE_CXX_COMPILER_ID Clang)
endif()
set( CMAKE_CXX_PLATFORM_ID Linux )
-set( CMAKE_CXX_SIZEOF_DATA_PTR 4 )
+set( CMAKE_CXX_SIZEOF_DATA_PTR ${CMAKE_C_SIZEOF_DATA_PTR} )
set( CMAKE_CXX_HAS_ISYSROOT 1 )
set( CMAKE_CXX_COMPILER_ABI ELF )
set( CMAKE_CXX_SOURCE_FILE_EXTENSIONS cc cp cxx cpp CPP c++ C )
set( CMAKE_COMPILER_IS_GNUASM 1)
set( CMAKE_ASM_SOURCE_FILE_EXTENSIONS s S asm )
+foreach( lang C CXX ASM )
+ if( ANDROID_COMPILER_IS_CLANG )
+ set( CMAKE_${lang}_COMPILER_VERSION ${ANDROID_CLANG_VERSION} )
+ else()
+ set( CMAKE_${lang}_COMPILER_VERSION ${ANDROID_COMPILER_VERSION} )
+ endif()
+endforeach()
+
# flags and definitions
remove_definitions( -DANDROID )
add_definitions( -DANDROID )
endif()
# NDK flags
-if( ARMEABI OR ARMEABI_V7A )
- set( ANDROID_CXX_FLAGS "${ANDROID_CXX_FLAGS} -fpic -funwind-tables" )
+if (ARM64_V8A )
+ set( ANDROID_CXX_FLAGS "${ANDROID_CXX_FLAGS} -ffunction-sections -funwind-tables" )
+ set( ANDROID_CXX_FLAGS_RELEASE "-fomit-frame-pointer -fstrict-aliasing" )
+ set( ANDROID_CXX_FLAGS_DEBUG "-fno-omit-frame-pointer -fno-strict-aliasing" )
+ if( NOT ANDROID_COMPILER_IS_CLANG )
+ set( ANDROID_CXX_FLAGS_RELEASE "${ANDROID_CXX_FLAGS_RELEASE} -funswitch-loops -finline-limit=300" )
+ endif()
+elseif( ARMEABI OR ARMEABI_V7A)
+ set( ANDROID_CXX_FLAGS "${ANDROID_CXX_FLAGS} -funwind-tables" )
if( NOT ANDROID_FORCE_ARM_BUILD AND NOT ARMEABI_V6 )
set( ANDROID_CXX_FLAGS_RELEASE "-mthumb -fomit-frame-pointer -fno-strict-aliasing" )
set( ANDROID_CXX_FLAGS_DEBUG "-marm -fno-omit-frame-pointer -fno-strict-aliasing" )
set( ANDROID_CXX_FLAGS "${ANDROID_CXX_FLAGS} -funswitch-loops -finline-limit=300" )
endif()
endif()
-elseif( X86 )
+elseif( X86 OR X86_64 )
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" )
+elseif( MIPS OR MIPS64 )
+ set( ANDROID_CXX_FLAGS "${ANDROID_CXX_FLAGS} -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 )
endif()
# variables controlling optional build flags
-if (ANDROID_NDK_RELEASE STRLESS "r7")
+if( ANDROID_NDK_RELEASE_NUM LESS 7000 ) # before 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 )
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_GOLD_LINKER ${ANDROID_GOLD_LINKER} CACHE BOOL "Enables gold linker" )
set( ANDROID_NOEXECSTACK ${ANDROID_NOEXECSTACK} CACHE BOOL "Allows or disallows undefined symbols in shared libraries" )
set( ANDROID_RELRO ${ANDROID_RELRO} CACHE BOOL "Enables RELRO - a memory corruption mitigation technique" )
mark_as_advanced( ANDROID_NO_UNDEFINED ANDROID_SO_UNDEFINED ANDROID_FUNCTION_LEVEL_LINKING ANDROID_GOLD_LINKER ANDROID_NOEXECSTACK ANDROID_RELRO )
endif()
if( ANDROID_COMPILER_VERSION VERSION_EQUAL "4.6" )
- if( ANDROID_GOLD_LINKER AND (CMAKE_HOST_UNIX OR ANDROID_NDK_RELEASE STRGREATER "r8b") AND (ARMEABI OR ARMEABI_V7A OR X86) )
+ if( ANDROID_GOLD_LINKER AND (CMAKE_HOST_UNIX OR ANDROID_NDK_RELEASE_NUM GREATER 8002) AND (ARMEABI OR ARMEABI_V7A OR X86) )
set( ANDROID_LINKER_FLAGS "${ANDROID_LINKER_FLAGS} -fuse-ld=gold" )
- elseif( ANDROID_NDK_RELEASE STRGREATER "r8b")
+ elseif( ANDROID_NDK_RELEASE_NUM GREATER 8002 ) # after 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
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()
+ set( ANDROID_CXX_FLAGS "-target ${ANDROID_LLVM_TRIPLE} -Qunused-arguments ${ANDROID_CXX_FLAGS}" )
if( BUILD_WITH_ANDROID_NDK )
set( ANDROID_CXX_FLAGS "-gcc-toolchain ${ANDROID_TOOLCHAIN_ROOT} ${ANDROID_CXX_FLAGS}" )
endif()
set( CMAKE_EXE_LINKER_FLAGS "-Wl,-T,${ANDROID_NDK_TOOLCHAINS_PATH}/${ANDROID_GCC_TOOLCHAIN_NAME}/mipself.x ${CMAKE_EXE_LINKER_FLAGS}" )
endif()
+# pie/pic
+if( NOT (ANDROID_NATIVE_API_LEVEL LESS 16) AND (NOT DEFINED ANDROID_APP_PIE OR ANDROID_APP_PIE) AND (CMAKE_VERSION VERSION_GREATER 2.8.8) )
+ set( CMAKE_POSITION_INDEPENDENT_CODE TRUE )
+ set( CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -fPIE -pie")
+else()
+ set( CMAKE_POSITION_INDEPENDENT_CODE FALSE )
+ set( CMAKE_CXX_FLAGS "-fpic ${CMAKE_CXX_FLAGS}" )
+ set( CMAKE_C_FLAGS "-fpic ${CMAKE_C_FLAGS}" )
+endif()
+
# configure rtti
if( DEFINED ANDROID_RTTI AND ANDROID_STL_FORCE_FEATURES )
if( ANDROID_RTTI )
ANDROID_RELRO
ANDROID_LIBM_PATH
ANDROID_EXPLICIT_CRT_LINK
+ ANDROID_APP_PIE
)
if( DEFINED ${__var} )
if( "${__var}" MATCHES " ")
# 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_ABI : "armeabi-v7a" (default), "armeabi", "armeabi-v7a with NEON", "armeabi-v7a with VFPV3", "armeabi-v6 with VFP", "x86", "mips", "arm64-v8a", "x86_64", "mips64"
+# ANDROID_NATIVE_API_LEVEL : 3,4,5,8,9,14,15,16,17,18,19,21 (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
# ARMEABI : TRUE for arm v6 and older devices
# ARMEABI_V6 : TRUE for arm v6
# ARMEABI_V7A : TRUE for arm v7a
+# ARM64_V8A : TRUE for arm64-v8a
# NEON : TRUE if NEON unit is enabled
# VFPV3 : TRUE if VFP version 3 is enabled
# X86 : TRUE if configured for x86
+# X86_64 : TRUE if configured for x86_64
# MIPS : TRUE if configured for mips
+# MIPS64 : TRUE if configured for mips64
# 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; set only for NDK
-# ANDROID_ARCH_NAME : "arm" or "x86" or "mips" depending on ANDROID_ABI
+# ANDROID_NDK_ABI_NAME : "armeabi", "armeabi-v7a", "x86", "mips", "arm64-v8a", "x86_64", "mips64" depending on ANDROID_ABI
+# ANDROID_NDK_RELEASE : from r5 to r10d; set only for NDK
+# ANDROID_NDK_RELEASE_NUM : numeric ANDROID_NDK_RELEASE version (1000*major+minor)
+# ANDROID_ARCH_NAME : "arm", "x86", "mips", "arm64", "x86_64", "mips64" 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
# ARMEABI_NDK_NAME : superseded by ANDROID_NDK_ABI_NAME
#
# Secondary (less stable) read-only variables:
-# ANDROID_COMPILER_VERSION : GCC version used
+# ANDROID_COMPILER_VERSION : GCC version used (not Clang version)
+# ANDROID_CLANG_VERSION : version of clang compiler if clang is 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_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:
projects / platform / upstream / opencv.git / commitdiff