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Open Source Computer Vision Library
https://opencv.org/
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357 lines
16 KiB
357 lines
16 KiB
# ---------------------------------------------------------------------------- |
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# Android CMake toolchain file, for use with the ndk r5 |
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# See home page: http://code.google.com/p/android-cmake/ |
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# |
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# Usage Linux: |
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# $ export ANDROID_NDK=/<absolute path to NDK> |
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# $ cmake -DCMAKE_TOOLCHAIN_FILE=<path to this file>/android.toolchain.cmake .. |
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# $ make |
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# |
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# Usage Linux (using standalone toolchain): |
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# $ export ANDROID_NDK_TOOLCHAIN_ROOT=/<absolute path to standalone toolchain> |
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# $ cmake -DCMAKE_TOOLCHAIN_FILE=<path to this file>/android.toolchain.cmake .. |
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# $ make |
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# |
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# Usage Windows: |
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# You need native port of make to build your project. |
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# For example this one: http://gnuwin32.sourceforge.net/packages/make.htm |
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# |
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# $ SET ANDROID_NDK=C:\<absolute path to NDK>\android-ndk-r5b |
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# $ cmake.exe -G"Unix Makefiles" -DCMAKE_TOOLCHAIN_FILE=<path to this file>\android.toolchain.cmake -DCMAKE_MAKE_PROGRAM=C:\<absolute path to make>\make.exe .. |
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# $ C:\<absolute path to make>\make.exe |
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# |
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# |
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# Toolchain options (can be set as cmake parameters: -D<option_name>=<value>): |
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# ANDROID_NDK=/opt/android-ndk-r5b - path to NDK root. |
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# Can be set as environment variable. |
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# |
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# ANDROID_NDK_TOOLCHAIN_ROOT=/opt/android-toolchain - path to standalone toolchain. |
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# Option is not used if full NDK is found. Can be set as environment variable. |
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# |
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# ANDROID_API_LEVEL=android-8 - level of android API to use. |
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# Option is ignored when build uses stanalone toolchain. |
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# |
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# ARM_TARGET=armeabi-v7a - type of floating point support. |
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# Other possible values are: "armeabi", "armeabi-v7a with NEON", "armeabi-v7a with VFPV3" |
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# |
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# FORCE_ARM=false - set true to generate 32-bit ARM instructions instead of Thumb-1. |
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# |
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# NO_UNDEFINED=true - set true to show all undefined symbols will as linker errors even if they are not used. |
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# |
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# NO_SWIG=false - set true to disable SWIG package |
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# |
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# |
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# Toolcahin will search for NDK/toolchain in following order: |
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# ANDROID_NDK - cmake parameter |
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# ANDROID_NDK - environment variable |
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# ANDROID_NDK - default location |
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# ANDROID_NDK_TOOLCHAIN_ROOT - cmake parameter |
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# ANDROID_NDK_TOOLCHAIN_ROOT - environment variable |
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# ANDROID_NDK_TOOLCHAIN_ROOT - default location |
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# |
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# |
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# What?: |
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# Make sure to do the following in your scripts: |
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# SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${my_cxx_flags}") |
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# SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${my_cxx_flags}") |
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# The flags will be prepopulated with critical flags, so don't loose them. |
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# |
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# ANDROID and BUILD_ANDROID will be set to true, you may test these |
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# variables to make necessary changes. |
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# |
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# Also ARMEABI and ARMEABI_V7A will be set true, mutually exclusive. V7A is |
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# for floating point. NEON option will be set true if fpu is set to neon. |
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# |
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# LIBRARY_OUTPUT_PATH_ROOT should be set in cache to determine where android |
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# libraries will be installed. |
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# default is ${CMAKE_SOURCE_DIR} , and the android libs will always be |
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# under ${LIBRARY_OUTPUT_PATH_ROOT}/libs/armeabi* depending on target. |
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# this will be convenient for android linking |
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# |
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# Base system is Linux, but you may need to change things |
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# for android compatibility. |
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# |
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# |
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# - initial version December 2010 Ethan Rublee ethan.ruble@gmail.com |
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# - modified April 2011 Andrey Kamaev andrey.kamaev@itseez.com |
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# [+] added possibility to build with NDK (without standalone toolchain) |
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# [+] support croos compilation on Windows (native, no cygwin support) |
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# [+] added compiler option to force "char" type to be signed |
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# [+] added toolchain option to compile to 32-bit ARM instructions |
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# [+] added toolchain option to disable SWIG search |
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# [+] added platform "armeabi-v7a with VFPV3" |
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# [~] ARM_TARGETS renamed to ARM_TARGET |
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# - modified April 2011 Andrey Kamaev andrey.kamaev@itseez.com |
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# [+] EXECUTABLE_OUTPUT_PATH is set by toolchain (required on Windows) |
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# [~] Fixed bug with ANDROID_API_LEVEL variable |
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# [~] turn off SWIG search if it is not found first time |
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# - modified May 2011 Andrey Kamaev andrey.kamaev@itseez.com |
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# [~] ANDROID_LEVEL is renamed to ANDROID_API_LEVEL |
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# [+] ANDROID_API_LEVEL is detected by toolchain if not specified |
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# [~] added guard to prevent changing of output directories on first cmake pass |
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# [~] toolchain exits with error if ARM_TARGET is not recognized |
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# ---------------------------------------------------------------------------- |
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# this one is important |
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set( CMAKE_SYSTEM_NAME Linux ) |
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#this one not so much |
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set( CMAKE_SYSTEM_VERSION 1 ) |
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set( ANDROID_NDK_DEFAULT_SEARCH_PATH /opt/android-ndk-r5b ) |
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set( ANDROID_NDK_TOOLCHAIN_DEFAULT_SEARCH_PATH /opt/android-toolchain ) |
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set( TOOL_OS_SUFFIX "" ) |
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macro( __TOOLCHAIN_DETECT_API_LEVEL _path ) |
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SET( _expected ${ARGV1} ) |
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if( NOT EXISTS ${_path} ) |
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message( FATAL_ERROR "Could not verify Android API level. Probably you have specified invalid level value, or your copy of NDK/toolchain is broken." ) |
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endif() |
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SET( API_LEVEL_REGEX "^[\t ]*#define[\t ]+__ANDROID_API__[\t ]+([0-9]+)[\t ]*$" ) |
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FILE( STRINGS ${_path} API_FILE_CONTENT REGEX "${API_LEVEL_REGEX}") |
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if( NOT API_FILE_CONTENT ) |
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message( FATAL_ERROR "Could not verify Android API level. Probably you have specified invalid level value, or your copy of NDK/toolchain is broken." ) |
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endif() |
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string( REGEX REPLACE "${API_LEVEL_REGEX}" "\\1" ANDROID_LEVEL_FOUND "${API_FILE_CONTENT}" ) |
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if( DEFINED _expected ) |
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if( NOT ${ANDROID_LEVEL_FOUND} EQUAL ${_expected} ) |
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message( FATAL_ERROR "Specified Android API level does not match level found. Probably your copy of NDK/toolchain is broken." ) |
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endif() |
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endif() |
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set( ANDROID_API_LEVEL ${ANDROID_LEVEL_FOUND} CACHE STRING "android API level" FORCE ) |
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endmacro() |
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#set path for android NDK -- look |
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if( NOT DEFINED ANDROID_NDK ) |
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set( ANDROID_NDK $ENV{ANDROID_NDK} ) |
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endif() |
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if( NOT EXISTS ${ANDROID_NDK} ) |
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if( EXISTS ${ANDROID_NDK_DEFAULT_SEARCH_PATH} ) |
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set ( ANDROID_NDK ${ANDROID_NDK_DEFAULT_SEARCH_PATH} ) |
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message( STATUS "Using default path for android NDK ${ANDROID_NDK}" ) |
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message( STATUS "If you prefer to use a different location, please define the environment variable: ANDROID_NDK" ) |
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endif() |
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endif() |
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if( EXISTS ${ANDROID_NDK} ) |
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set( ANDROID_NDK ${ANDROID_NDK} CACHE PATH "root of the android ndk" FORCE ) |
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if( APPLE ) |
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set( NDKSYSTEM "darwin-x86" ) |
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elseif( WIN32 ) |
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set( NDKSYSTEM "windows" ) |
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set( TOOL_OS_SUFFIX ".exe" ) |
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elseif( UNIX ) |
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set( NDKSYSTEM "linux-x86" ) |
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else() |
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message( FATAL_ERROR "Your platform is not supported" ) |
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endif() |
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set( ANDROID_API_LEVEL $ENV{ANDROID_API_LEVEL} ) |
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string( REGEX REPLACE "[\t ]*android-([0-9]+)[\t ]*" "\\1" ANDROID_API_LEVEL "${ANDROID_API_LEVEL}" ) |
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string( REGEX REPLACE "[\t ]*([0-9]+)[\t ]*" "\\1" ANDROID_API_LEVEL "${ANDROID_API_LEVEL}" ) |
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set( PossibleAndroidLevels "3;4;5;8;9" ) |
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set( ANDROID_API_LEVEL ${ANDROID_API_LEVEL} CACHE STRING "android API level" ) |
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set_property( CACHE ANDROID_API_LEVEL PROPERTY STRINGS ${PossibleAndroidLevels} ) |
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if( NOT ANDROID_API_LEVEL GREATER 2 ) |
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set( ANDROID_API_LEVEL 8) |
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message( STATUS "Using default android API level android-${ANDROID_API_LEVEL}" ) |
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message( STATUS "If you prefer to use a different API level, please define the environment variable: ANDROID_API_LEVEL" ) |
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endif() |
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set( ANDROID_NDK_TOOLCHAIN_ROOT "${ANDROID_NDK}/toolchains/arm-linux-androideabi-4.4.3/prebuilt/${NDKSYSTEM}" ) |
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set( ANDROID_NDK_SYSROOT "${ANDROID_NDK}/platforms/android-${ANDROID_API_LEVEL}/arch-arm" ) |
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__TOOLCHAIN_DETECT_API_LEVEL( "${ANDROID_NDK_SYSROOT}/usr/include/android/api-level.h" ${ANDROID_API_LEVEL} ) |
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#message( STATUS "Using android NDK from ${ANDROID_NDK}" ) |
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set( BUILD_WITH_ANDROID_NDK True ) |
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else() |
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#try to find toolchain |
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if( NOT DEFINED ANDROID_NDK_TOOLCHAIN_ROOT ) |
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set( ANDROID_NDK_TOOLCHAIN_ROOT $ENV{ANDROID_NDK_TOOLCHAIN_ROOT} ) |
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endif() |
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if( NOT EXISTS ${ANDROID_NDK_TOOLCHAIN_ROOT} ) |
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set( ANDROID_NDK_TOOLCHAIN_ROOT ${ANDROID_NDK_TOOLCHAIN_DEFAULT_SEARCH_PATH} ) |
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message( STATUS "Using default path for toolchain ${ANDROID_NDK_TOOLCHAIN_ROOT}" ) |
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message( STATUS "If you prefer to use a different location, please define the environment variable: ANDROID_NDK_TOOLCHAIN_ROOT" ) |
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endif() |
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set( ANDROID_NDK_TOOLCHAIN_ROOT ${ANDROID_NDK_TOOLCHAIN_ROOT} CACHE PATH "root of the Android NDK standalone toolchain" FORCE ) |
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set( ANDROID_NDK_SYSROOT "${ANDROID_NDK_TOOLCHAIN_ROOT}/sysroot" ) |
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if( NOT EXISTS ${ANDROID_NDK_TOOLCHAIN_ROOT} ) |
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message( FATAL_ERROR "neither ${ANDROID_NDK} nor ${ANDROID_NDK_TOOLCHAIN_ROOT} does not exist! |
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You should either set an environment variable: |
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export ANDROID_NDK=~/my-android-ndk |
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or |
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export ANDROID_NDK_TOOLCHAIN_ROOT=~/my-android-toolchain |
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or put the toolchain or NDK in the default path: |
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sudo ln -s ~/my-android-ndk ${ANDROID_NDK_DEFAULT_SEARCH_PATH} |
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sudo ln -s ~/my-android-toolchain ${ANDROID_NDK_TOOLCHAIN_DEFAULT_SEARCH_PATH}" ) |
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endif() |
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__TOOLCHAIN_DETECT_API_LEVEL( "${ANDROID_NDK_SYSROOT}/usr/include/android/api-level.h" ) |
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#message( STATUS "Using android NDK standalone toolchain from ${ANDROID_NDK_TOOLCHAIN_ROOT}" ) |
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set( BUILD_WITH_ANDROID_NDK_TOOLCHAIN True ) |
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endif() |
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# specify the cross compiler |
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set( CMAKE_C_COMPILER ${ANDROID_NDK_TOOLCHAIN_ROOT}/bin/arm-linux-androideabi-gcc${TOOL_OS_SUFFIX} CACHE PATH "gcc" FORCE ) |
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set( CMAKE_CXX_COMPILER ${ANDROID_NDK_TOOLCHAIN_ROOT}/bin/arm-linux-androideabi-g++${TOOL_OS_SUFFIX} CACHE PATH "g++" FORCE ) |
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#there may be a way to make cmake deduce these TODO deduce the rest of the tools |
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set( CMAKE_AR ${ANDROID_NDK_TOOLCHAIN_ROOT}/bin/arm-linux-androideabi-ar${TOOL_OS_SUFFIX} CACHE PATH "archive" FORCE ) |
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set( CMAKE_LINKER ${ANDROID_NDK_TOOLCHAIN_ROOT}/bin/arm-linux-androideabi-ld${TOOL_OS_SUFFIX} CACHE PATH "linker" FORCE ) |
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set( CMAKE_NM ${ANDROID_NDK_TOOLCHAIN_ROOT}/bin/arm-linux-androideabi-nm${TOOL_OS_SUFFIX} CACHE PATH "nm" FORCE ) |
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set( CMAKE_OBJCOPY ${ANDROID_NDK_TOOLCHAIN_ROOT}/bin/arm-linux-androideabi-objcopy${TOOL_OS_SUFFIX} CACHE PATH "objcopy" FORCE ) |
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set( CMAKE_OBJDUMP ${ANDROID_NDK_TOOLCHAIN_ROOT}/bin/arm-linux-androideabi-objdump${TOOL_OS_SUFFIX} CACHE PATH "objdump" FORCE ) |
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set( CMAKE_STRIP ${ANDROID_NDK_TOOLCHAIN_ROOT}/bin/arm-linux-androideabi-strip${TOOL_OS_SUFFIX} CACHE PATH "strip" FORCE ) |
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set( CMAKE_RANLIB ${ANDROID_NDK_TOOLCHAIN_ROOT}/bin/arm-linux-androideabi-ranlib${TOOL_OS_SUFFIX} CACHE PATH "ranlib" FORCE ) |
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#setup build targets, mutually exclusive |
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set( PossibleArmTargets "armeabi;armeabi-v7a;armeabi-v7a with NEON;armeabi-v7a with VFPV3" ) |
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set( ARM_TARGET "armeabi-v7a" CACHE STRING "the arm target for android, recommend armeabi-v7a for floating point support and NEON." ) |
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set_property( CACHE ARM_TARGET PROPERTY STRINGS ${PossibleArmTargets} ) |
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#compatibility junk for previous version of toolchain |
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if( DEFINED ARM_TARGETS AND NOT DEFINED ARM_TARGET ) |
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SET( ARM_TARGET "${ARM_TARGETS}" ) |
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endif() |
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#set these flags for client use |
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if( ARM_TARGET STREQUAL "armeabi" ) |
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set( ARMEABI true ) |
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set( ARMEABI_NDK_NAME "armeabi" ) |
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set( NEON false ) |
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else() |
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if( ARM_TARGET STREQUAL "armeabi-v7a with NEON" ) |
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set( NEON true ) |
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set( VFPV3 true ) |
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elseif( ARM_TARGET STREQUAL "armeabi-v7a with VFPV3" ) |
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set( VFPV3 true ) |
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elseif( NOT ARM_TARGET STREQUAL "armeabi-v7a") |
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message( FATAL_ERROR "Unsupported ARM_TARGET=${ARM_TARGET} is specified. |
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Supported values are: \"armeabi\", \"armeabi-v7a\", \"armeabi-v7a with NEON\", \"armeabi-v7a with VFPV3\" |
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" ) |
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endif() |
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set( ARMEABI_V7A true ) |
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set( ARMEABI_NDK_NAME "armeabi-v7a" ) |
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endif() |
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#setup output directories |
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set( LIBRARY_OUTPUT_PATH_ROOT ${CMAKE_SOURCE_DIR} CACHE PATH "root for library output, set this to change where android libs are installed to" ) |
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SET( DO_NOT_CHANGE_OUTPUT_PATHS_ON_FIRST_PASS OFF CACHE BOOL "") |
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if( DO_NOT_CHANGE_OUTPUT_PATHS_ON_FIRST_PASS ) |
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#some cmake standard modules work incorrectly if output paths are changed |
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set( LIBRARY_OUTPUT_PATH ${LIBRARY_OUTPUT_PATH_ROOT}/libs/${ARMEABI_NDK_NAME} CACHE PATH "path for android libs" FORCE ) |
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set( EXECUTABLE_OUTPUT_PATH ${LIBRARY_OUTPUT_PATH_ROOT}/bin/${ARMEABI_NDK_NAME} CACHE PATH "Output directory for applications" FORCE) |
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set( CMAKE_INSTALL_PREFIX ${ANDROID_NDK_TOOLCHAIN_ROOT}/user/${ARMEABI_NDK_NAME} CACHE STRING "path for installing" FORCE ) |
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endif() |
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SET( DO_NOT_CHANGE_OUTPUT_PATHS_ON_FIRST_PASS ON CACHE INTERNAL "" FORCE) |
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# where is the target environment |
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set( CMAKE_FIND_ROOT_PATH ${ANDROID_NDK_TOOLCHAIN_ROOT}/bin ${ANDROID_NDK_TOOLCHAIN_ROOT}/arm-linux-androideabi ${ANDROID_NDK_SYSROOT} ${CMAKE_INSTALL_PREFIX} ${CMAKE_INSTALL_PREFIX}/share ) |
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if( BUILD_WITH_ANDROID_NDK ) |
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set( STL_PATH "${ANDROID_NDK}/sources/cxx-stl/gnu-libstdc++" ) |
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set( STL_LIBRARIES_PATH "${STL_PATH}/libs/${ARMEABI_NDK_NAME}" ) |
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include_directories( ${STL_PATH}/include ${STL_LIBRARIES_PATH}/include ) |
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endif() |
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if( BUILD_WITH_ANDROID_NDK_TOOLCHAIN ) |
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set( STL_LIBRARIES_PATH "${CMAKE_INSTALL_PREFIX}/lib" ) |
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#for some reason this is needed? TODO figure out why... |
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include_directories( ${ANDROID_NDK_TOOLCHAIN_ROOT}/arm-linux-androideabi/include/c++/4.4.3/arm-linux-androideabi ) |
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endif() |
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# allow programs like swig to be found -- but can be deceiving for |
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# system tool dependencies. |
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set( CMAKE_FIND_ROOT_PATH_MODE_PROGRAM ONLY ) |
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# only search for libraries and includes in the ndk toolchain |
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set( CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY ) |
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set( CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY ) |
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set( CMAKE_CXX_FLAGS "-fPIC -DANDROID -Wno-psabi -fsigned-char" ) |
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set( CMAKE_C_FLAGS "-fPIC -DANDROID -Wno-psabi -fsigned-char" ) |
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set( FORCE_ARM OFF CACHE BOOL "Use 32-bit ARM instructions instead of Thumb-1" ) |
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if( NOT FORCE_ARM ) |
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#It is recommended to use the -mthumb compiler flag to force the generation |
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#of 16-bit Thumb-1 instructions (the default being 32-bit ARM ones). |
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set( CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mthumb" ) |
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set( CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -mthumb" ) |
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else() |
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set( CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -marm" ) |
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set( CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -marm" ) |
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endif() |
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if( BUILD_WITH_ANDROID_NDK ) |
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set( CMAKE_CXX_FLAGS "--sysroot=${ANDROID_NDK_SYSROOT} ${CMAKE_CXX_FLAGS}" ) |
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set( CMAKE_C_FLAGS "--sysroot=${ANDROID_NDK_SYSROOT} ${CMAKE_C_FLAGS}" ) |
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endif() |
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if( ARMEABI_V7A ) |
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#these are required flags for android armv7-a |
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set( CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -march=armv7-a -mfloat-abi=softfp" ) |
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set( CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -march=armv7-a -mfloat-abi=softfp" ) |
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if( NEON ) |
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set( CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mfpu=neon" ) |
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set( CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -mfpu=neon" ) |
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elseif( VFPV3 ) |
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set( CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mfpu=vfpv3" ) |
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set( CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -mfpu=vfpv3" ) |
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endif() |
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endif() |
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set( CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}" CACHE STRING "c++ flags" ) |
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set( CMAKE_C_FLAGS "${CMAKE_C_FLAGS}" CACHE STRING "c flags" ) |
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#-Wl,-L${LIBCPP_LINK_DIR},-lstdc++,-lsupc++ |
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#-L${LIBCPP_LINK_DIR} -lstdc++ -lsupc++ |
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#Also, this is *required* to use the following linker flags that routes around |
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#a CPU bug in some Cortex-A8 implementations: |
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set( LINKER_FLAGS "-Wl,--fix-cortex-a8 -L${STL_LIBRARIES_PATH} -lstdc++ -lsupc++ " ) |
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set( NO_UNDEFINED ON CACHE BOOL "Don't all undefined symbols" ) |
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if( NO_UNDEFINED ) |
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set( LINKER_FLAGS "-Wl,--no-undefined ${LINKER_FLAGS}" ) |
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endif() |
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set( CMAKE_SHARED_LINKER_FLAGS "${LINKER_FLAGS}" CACHE STRING "linker flags" FORCE ) |
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set( CMAKE_MODULE_LINKER_FLAGS "${LINKER_FLAGS}" CACHE STRING "linker flags" FORCE ) |
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set( CMAKE_EXE_LINKER_FLAGS "${LINKER_FLAGS}" CACHE STRING "linker flags" FORCE ) |
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#set these global flags for cmake client scripts to change behavior |
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set( ANDROID True ) |
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set( BUILD_ANDROID True ) |
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#SWIG junk... |
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set( NO_SWIG OFF CACHE BOOL "Don't search for SWIG" ) |
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if( NOT NO_SWIG ) |
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#need to search in the host for swig to be found |
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set( CMAKE_FIND_ROOT_PATH_MODE_PROGRAM BOTH ) |
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set( CMAKE_FIND_ROOT_PATH_MODE_INCLUDE BOTH ) |
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find_package( SWIG QUIET ) |
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set( CMAKE_FIND_ROOT_PATH_MODE_PROGRAM ONLY ) |
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set( CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY ) |
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if( SWIG_FOUND ) |
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set( SWIG_USE_FILE ${CMAKE_ROOT}/Modules/UseSWIG.cmake CACHE PATH "Use Swig cmake module" ) |
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set( SWIG_OUTPUT_ROOT ${LIBRARY_OUTPUT_PATH_ROOT}/src CACHE PATH "Where swig generated files will be placed relative to, <SWIG_OUTPUT_ROOT>/com/mylib/foo/jni ..." FORCE ) |
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#convenience macro for swig java packages |
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macro( SET_SWIG_JAVA_PACKAGE package_name ) |
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string( REGEX REPLACE "[.]" "/" package_name_output ${package_name} ) |
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set( CMAKE_SWIG_OUTDIR ${SWIG_OUTPUT_ROOT}/${package_name_output} ) |
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set( CMAKE_SWIG_FLAGS "-package" "\"${package_name}\"" ) |
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endmacro() |
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else() |
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message( STATUS "SWIG is not found" ) |
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set( NO_SWIG ON CACHE BOOL "Don't search for SWIG" FORCE ) |
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endif() |
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endif()
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