358 lines
16 KiB
CMake
358 lines
16 KiB
CMake
# ----------------------------------------------------------------------------
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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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