1 # ------------------------------------------------------------------------------
2 # Android CMake toolchain file, for use with the Android NDK r5-r7
3 # Requires cmake 2.6.3 or newer (2.8.3 or newer is recommended).
4 # See home page: http://code.google.com/p/android-cmake/
6 # The file is mantained by the OpenCV project. And also can be found at
7 # http://code.opencv.org/svn/opencv/trunk/opencv/android/android.toolchain.cmake
10 # $ export ANDROID_NDK=/absolute/path/to/the/android-ndk
11 # $ mkdir build && cd build
12 # $ cmake -DCMAKE_TOOLCHAIN_FILE=path/to/the/android.toolchain.cmake ..
15 # Usage Linux (using standalone toolchain):
16 # $ export ANDROID_STANDALONE_TOOLCHAIN=/absolute/path/to/android-toolchain
17 # $ mkdir build && cd build
18 # $ cmake -DCMAKE_TOOLCHAIN_FILE=path/to/the/android.toolchain.cmake ..
22 # You need native port of make to build your project.
23 # Android NDK r7 already has make.exe on board.
24 # For older NDK you have to install it separately.
25 # For example, this one: http://gnuwin32.sourceforge.net/packages/make.htm
27 # $ SET ANDROID_NDK=C:\absolute\path\to\the\android-ndk
28 # $ mkdir build && cd build
29 # $ cmake.exe -G"MinGW Makefiles"
30 # -DCMAKE_TOOLCHAIN_FILE=path\to\the\android.toolchain.cmake
31 # -DCMAKE_MAKE_PROGRAM="%ANDROID_NDK%\prebuilt\windows\bin\make.exe" ..
32 # $ "%ANDROID_NDK%\prebuilt\windows\bin\make.exe"
35 # Options (can be set as cmake parameters: -D<option_name>=<value>):
36 # ANDROID_NDK=/opt/android-ndk - path to the NDK root.
37 # Can be set as environment variable. Can be set only at first cmake run.
39 # ANDROID_STANDALONE_TOOLCHAIN=/opt/android-toolchain - path to the
40 # standalone toolchain. This option is not used if full NDK is found
41 # (ignored if ANDROID_NDK is set).
42 # Can be set as environment variable. Can be set only at first cmake run.
44 # ANDROID_ABI=armeabi-v7a - specifies the target Application Binary
45 # Interface (ABI). This option nearly matches to the APP_ABI variable
46 # used by ndk-build tool from Android NDK.
47 # Possible values are:
48 # "armeabi" - matches to the NDK ABI with the same name.
49 # See ${ANDROID_NDK}/docs/CPU-ARCH-ABIS.html for the documentation.
50 # "armeabi-v7a" - matches to the NDK ABI with the same name.
51 # See ${ANDROID_NDK}/docs/CPU-ARCH-ABIS.html for the documentation.
52 # "armeabi-v7a with NEON" - same as armeabi-v7a, but
53 # sets NEON as floating-point unit
54 # "armeabi-v7a with VFPV3" - same as armeabi-v7a, but
55 # sets VFPV3 as floating-point unit (has 32 registers instead of 16).
56 # "armeabi-v6 with VFP" - tuned for ARMv6 processors having VFP.
57 # "x86" - matches to the NDK ABI with the same name.
58 # See ${ANDROID_NDK}/docs/CPU-ARCH-ABIS.html for the documentation.
60 # ANDROID_NATIVE_API_LEVEL=android-8 - level of Android API compile for.
61 # Option is read-only when standalone toolchain used.
63 # ANDROID_FORCE_ARM_BUILD=OFF - set true to generate 32-bit ARM instructions
64 # instead of Thumb-1. Is not available for "x86" (inapplicable) and
65 # "armeabi-v6 with VFP" (forced) ABIs.
67 # ANDROID_NO_UNDEFINED=ON - set true to show all undefined symbols as linker
68 # errors even if they are not used.
70 # ANDROID_SO_UNDEFINED=OFF - set true to allow undefined symbols in shared
71 # libraries. Automatically turned on for NDK r5x and r6x due to GLESv2
74 # LIBRARY_OUTPUT_PATH_ROOT=${CMAKE_SOURCE_DIR} - where to output binary
75 # files. See additional details below.
77 # ANDROID_SET_OBSOLETE_VARIABLES=ON - it set, then toolchain defines some
78 # obsolete variables which were set by previous versions of this file for
79 # backward compatibility.
83 # android-cmake toolchain searches for NDK/toolchain in the following order:
84 # ANDROID_NDK - cmake parameter
85 # ANDROID_NDK - environment variable
86 # ANDROID_STANDALONE_TOOLCHAIN - cmake parameter
87 # ANDROID_STANDALONE_TOOLCHAIN - environment variable
88 # ANDROID_NDK - default locations
89 # ANDROID_STANDALONE_TOOLCHAIN - default locations
91 # Make sure to do the following in your scripts:
92 # SET( CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${my_cxx_flags}" )
93 # SET( CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${my_cxx_flags}" )
94 # The flags will be prepopulated with critical flags, so don't loose them.
95 # Also be aware that toolchain also sets configuration-specific compiler
96 # flags and linker flags.
98 # ANDROID and BUILD_ANDROID will be set to true, you may test any of these
99 # variables to make necessary Android-specific configuration changes.
101 # Also ARMEABI or ARMEABI_V7A or X86 will be set true, mutually exclusive.
102 # NEON option will be set true if VFP is set to NEON.
104 # LIBRARY_OUTPUT_PATH_ROOT should be set in cache to determine where Android
105 # libraries will be installed.
106 # Default is ${CMAKE_SOURCE_DIR}, and the android libs will always be
107 # under the ${LIBRARY_OUTPUT_PATH_ROOT}/libs/${ANDROID_NDK_ABI_NAME}
108 # (depending on the target ABI). This is convenient for Android packaging.
112 # - initial version December 2010 Ethan Rublee ethan.ruble@gmail.com
113 # - modified April 2011 Andrey Kamaev andrey.kamaev@itseez.com
114 # [+] added possibility to build with NDK (without standalone toolchain)
115 # [+] support cross-compilation on Windows (native, no cygwin support)
116 # [+] added compiler option to force "char" type to be signed
117 # [+] added toolchain option to compile to 32-bit ARM instructions
118 # [+] added toolchain option to disable SWIG search
119 # [+] added platform "armeabi-v7a with VFPV3"
120 # [~] ARM_TARGETS renamed to ARM_TARGET
121 # [+] EXECUTABLE_OUTPUT_PATH is set by toolchain (required on Windows)
122 # [~] Fixed bug with ANDROID_API_LEVEL variable
123 # [~] turn off SWIG search if it is not found first time
124 # - modified May 2011 Andrey Kamaev andrey.kamaev@itseez.com
125 # [~] ANDROID_LEVEL is renamed to ANDROID_API_LEVEL
126 # [+] ANDROID_API_LEVEL is detected by toolchain if not specified
127 # [~] added guard to prevent changing of output directories on the first
129 # [~] toolchain exits with error if ARM_TARGET is not recognized
130 # - modified June 2011 Andrey Kamaev andrey.kamaev@itseez.com
131 # [~] default NDK path is updated for version r5c
132 # [+] variable CMAKE_SYSTEM_PROCESSOR is set based on ARM_TARGET
133 # [~] toolchain install directory is added to linker paths
134 # [-] removed SWIG-related stuff from toolchain
135 # [+] added macro find_host_package, find_host_program to search
136 # packages/programs on the host system
137 # [~] fixed path to STL library
138 # - modified July 2011 Andrey Kamaev andrey.kamaev@itseez.com
139 # [~] fixed options caching
140 # [~] search for all supported NDK versions
141 # [~] allowed spaces in NDK path
142 # - modified September 2011 Andrey Kamaev andrey.kamaev@itseez.com
143 # [~] updated for NDK r6b
144 # - modified November 2011 Andrey Kamaev andrey.kamaev@itseez.com
145 # [*] rewritten for NDK r7
146 # [+] x86 toolchain support (experimental)
147 # [+] added "armeabi-v6 with VFP" ABI for ARMv6 processors.
148 # [~] improved compiler and linker flags management
149 # [+] support different build flags for Release and Debug configurations
150 # [~] by default compiler flags the same as used by ndk-build (but only
152 # [~] ANDROID_NDK_TOOLCHAIN_ROOT is splitted to ANDROID_STANDALONE_TOOLCHAIN
153 # and ANDROID_TOOLCHAIN_ROOT
154 # [~] ARM_TARGET is renamed to ANDROID_ABI
155 # [~] ARMEABI_NDK_NAME is renamed to ANDROID_NDK_ABI_NAME
156 # [~] ANDROID_API_LEVEL is renamed to ANDROID_NATIVE_API_LEVEL
157 # - modified January 2012 Andrey Kamaev andrey.kamaev@itseez.com
158 # [+] added stlport_static support (experimental)
159 # [+] added special check for cygwin
160 # [+] filtered out hidden files (starting with .) while globbing inside NDK
161 # [+] automatically applied GLESv2 linkage fix for NDK revisions 5-6
162 # [+] added ANDROID_GET_ABI_RAWNAME to get NDK ABI names by CMake flags
163 # - modified February 2012 Andrey Kamaev andrey.kamaev@itseez.com
164 # [+] updated for NDK r7b
165 # [~] fixed cmake try_compile() command
166 # [~] Fix for missing install_name_tool on OS X
167 # ------------------------------------------------------------------------------
169 cmake_minimum_required( VERSION 2.6.3 )
171 if( PROJECT_NAME STREQUAL "CMAKE_TRY_COMPILE" )
172 include( "${CMAKE_CURRENT_SOURCE_DIR}/../android.toolchain.config.cmake" OPTIONAL )
175 # this one is important
176 set( CMAKE_SYSTEM_NAME Linux )
177 #this one not so much
178 set( CMAKE_SYSTEM_VERSION 1 )
180 set( ANDROID_SUPPORTED_NDK_VERSIONS -r7b -r7 -r6b -r6 -r5c -r5b -r5 "" )
181 if( CMAKE_HOST_WIN32 )
182 file( TO_CMAKE_PATH "$ENV{PROGRAMFILES}" ANDROID_NDK_SEARCH_PATHS )
183 set( ANDROID_NDK_SEARCH_PATHS "${ANDROID_NDK_SEARCH_PATHS}/android-ndk" "$ENV{SystemDrive}/NVPACK/android-ndk" )
185 set( ANDROID_NDK_SEARCH_PATHS /opt/android-ndk "$ENV{HOME}/NVPACK/android-ndk" )
187 set( ANDROID_STANDALONE_TOOLCHAIN_SEARCH_PATH /opt/android-toolchain )
188 set( ANDROID_SUPPORTED_ABIS_arm "armeabi-v7a;armeabi;armeabi-v7a with NEON;armeabi-v7a with VFPV3;armeabi-v6 with VFP" )
189 set( ANDROID_SUPPORTED_ABIS_x86 "x86" )
191 set( ANDROID_DEFAULT_NDK_API_LEVEL 8 )
192 set( ANDROID_DEFAULT_NDK_API_LEVEL_x86 9 )
195 macro( __LIST_FILTER listvar regex )
197 foreach( __val ${${listvar}} )
198 if( __val MATCHES "${regex}" )
199 list( REMOVE_ITEM ${listvar} "${__val}" )
205 macro( __INIT_VARIABLE var_name )
207 foreach( __var ${ARGN} )
208 if( __var STREQUAL "PATH" )
213 if( __test_path AND NOT EXISTS "${${var_name}}" )
214 unset( ${var_name} CACHE )
216 if( "${${var_name}}" STREQUAL "" )
218 foreach( __var ${ARGN} )
219 if( __var STREQUAL "VALUES" )
221 elseif( NOT __var STREQUAL "PATH" )
223 if( __var MATCHES "^OBSOLETE_.*$" )
224 string( REPLACE "OBSOLETE_" "" __var "${__var}" )
227 if( __var MATCHES "^ENV_.*$" )
228 string( REPLACE "ENV_" "" __var "${__var}" )
229 set( __value "$ENV{${__var}}" )
230 elseif( DEFINED ${__var} )
231 set( __value "${${__var}}" )
234 set( __value "${__var}" )
239 if( NOT "${__value}" STREQUAL "" )
241 if( EXISTS "${__value}" )
242 set( ${var_name} "${__value}" )
244 message( WARNING "Using value of obsolete variable ${__var} as initial value for ${var_name}. Please note, that ${__var} can be completely removed in future versions of the toolchain." )
249 set( ${var_name} "${__value}" )
251 message( WARNING "Using value of obsolete variable ${__var} as initial value for ${var_name}. Please note, that ${__var} can be completely removed in future versions of the toolchain." )
265 macro( __DETECT_NATIVE_API_LEVEL _var _path )
266 SET( __ndkApiLevelRegex "^[\t ]*#define[\t ]+__ANDROID_API__[\t ]+([0-9]+)[\t ]*$" )
267 FILE( STRINGS ${_path} __apiFileContent REGEX "${__ndkApiLevelRegex}" )
268 if( NOT __apiFileContent )
269 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." )
271 string( REGEX REPLACE "${__ndkApiLevelRegex}" "\\1" ${_var} "${__apiFileContent}" )
272 unset( __apiFileContent )
273 unset( __ndkApiLevelRegex )
276 macro( __DETECT_TOOLCHAIN_MACHINE_NAME _var _root )
277 file( GLOB __gccExePath "${_root}/bin/*-gcc${TOOL_OS_SUFFIX}" )
278 __LIST_FILTER( __gccExePath "bin/[.].*-gcc${TOOL_OS_SUFFIX}$" )
279 list( LENGTH __gccExePath __gccExePathsCount )
280 if( NOT __gccExePathsCount EQUAL 1 )
281 message( WARNING "Could not uniquely determine machine name for compiler from ${_root}." )
284 get_filename_component( __gccExeName "${__gccExePath}" NAME_WE )
285 string( REPLACE "-gcc" "" ${_var} "${__gccExeName}" )
287 unset( __gccExePath )
288 unset( __gccExePathsCount )
289 unset( __gccExeName )
292 macro( __COPY_IF_DIFFERENT _source _destination )
293 execute_process( COMMAND "${CMAKE_COMMAND}" -E copy_if_different "${_source}" "${_destination}" RESULT_VARIABLE __fileCopyProcess )
294 if( NOT __fileCopyProcess EQUAL 0 OR NOT EXISTS "${_destination}")
295 message( SEND_ERROR "Failed copying of ${_source} to the ${_destination}" )
297 unset( __fileCopyProcess )
301 #stl version: by default gnustl_static will be used
302 set( ANDROID_USE_STLPORT FALSE CACHE BOOL "Experimental: use stlport_static instead of gnustl_static")
303 mark_as_advanced( ANDROID_USE_STLPORT )
305 #fight against cygwin
306 set( ANDROID_FORBID_SYGWIN TRUE CACHE BOOL "Prevent cmake from working under cygwin and using cygwin tools")
307 mark_as_advanced( ANDROID_FORBID_SYGWIN )
308 if( ANDROID_FORBID_SYGWIN )
310 message( FATAL_ERROR "Android NDK and android-cmake toolchain are not welcome Cygwin. It is unlikely that this cmake toolchain will work under cygwin. But if you want to try then you can set cmake variable ANDROID_FORBID_SYGWIN to FALSE and rerun cmake." )
313 if( CMAKE_HOST_WIN32 )
314 #remove cygwin from PATH
315 set( __new_path "$ENV{PATH}")
316 __LIST_FILTER( __new_path "cygwin" )
317 set(ENV{PATH} "${__new_path}")
322 #detect current host platform
323 set( TOOL_OS_SUFFIX "" )
324 if( CMAKE_HOST_APPLE )
325 set( ANDROID_NDK_HOST_SYSTEM_NAME "darwin-x86" )
326 elseif( CMAKE_HOST_WIN32 )
327 set( ANDROID_NDK_HOST_SYSTEM_NAME "windows" )
328 set( TOOL_OS_SUFFIX ".exe" )
329 elseif( CMAKE_HOST_UNIX )
330 set( ANDROID_NDK_HOST_SYSTEM_NAME "linux-x86" )
332 message( FATAL_ERROR "Cross-compilation on your platform is not supported by this cmake toolchain" )
335 #see if we have path to Android NDK
336 __INIT_VARIABLE( ANDROID_NDK PATH ENV_ANDROID_NDK )
337 if( NOT ANDROID_NDK )
338 #see if we have path to Android standalone toolchain
339 __INIT_VARIABLE( ANDROID_STANDALONE_TOOLCHAIN PATH ENV_ANDROID_STANDALONE_TOOLCHAIN OBSOLETE_ANDROID_NDK_TOOLCHAIN_ROOT OBSOLETE_ENV_ANDROID_NDK_TOOLCHAIN_ROOT )
341 if( NOT ANDROID_STANDALONE_TOOLCHAIN )
342 #try to find Android NDK in one of the the default locations
343 set( __ndkSearchPaths )
344 foreach( __ndkSearchPath ${ANDROID_NDK_SEARCH_PATHS} )
345 foreach( suffix ${ANDROID_SUPPORTED_NDK_VERSIONS} )
346 list( APPEND __ndkSearchPaths "${__ndkSearchPath}${suffix}" )
349 __INIT_VARIABLE( ANDROID_NDK PATH VALUES ${__ndkSearchPaths} )
350 unset( __ndkSearchPaths )
353 message( STATUS "Using default path for Android NDK: ${ANDROID_NDK}" )
354 message( STATUS " If you prefer to use a different location, please define a cmake or environment variable: ANDROID_NDK" )
356 #try to find Android standalone toolchain in one of the the default locations
357 __INIT_VARIABLE( ANDROID_STANDALONE_TOOLCHAIN PATH ANDROID_STANDALONE_TOOLCHAIN_SEARCH_PATH )
359 if( ANDROID_STANDALONE_TOOLCHAIN )
360 message( STATUS "Using default path for standalone toolchain ${ANDROID_STANDALONE_TOOLCHAIN}" )
361 message( STATUS " If you prefer to use a different location, please define the variable: ANDROID_STANDALONE_TOOLCHAIN" )
362 endif( ANDROID_STANDALONE_TOOLCHAIN )
364 endif( NOT ANDROID_STANDALONE_TOOLCHAIN )
365 endif( NOT ANDROID_NDK )
367 #remember found paths
369 get_filename_component( ANDROID_NDK "${ANDROID_NDK}" ABSOLUTE )
370 #try to detect change
372 string( LENGTH "${ANDROID_NDK}" __length )
373 string( SUBSTRING "${CMAKE_AR}" 0 ${__length} __androidNdkPreviousPath )
374 if( NOT __androidNdkPreviousPath STREQUAL ANDROID_NDK )
375 message( FATAL_ERROR "It is not possible to change path to the NDK on subsequent run." )
377 unset( __androidNdkPreviousPath )
380 set( ANDROID_NDK "${ANDROID_NDK}" CACHE INTERNAL "Path of the Android NDK" )
381 set( BUILD_WITH_ANDROID_NDK True )
382 elseif( ANDROID_STANDALONE_TOOLCHAIN )
383 get_filename_component( ANDROID_STANDALONE_TOOLCHAIN "${ANDROID_STANDALONE_TOOLCHAIN}" ABSOLUTE )
384 #try to detect change
386 string( LENGTH "${ANDROID_STANDALONE_TOOLCHAIN}" __length )
387 string( SUBSTRING "${CMAKE_AR}" 0 ${__length} __androidStandaloneToolchainPreviousPath )
388 if( NOT __androidStandaloneToolchainPreviousPath STREQUAL ANDROID_STANDALONE_TOOLCHAIN )
389 message( FATAL_ERROR "It is not possible to change path to the Android standalone toolchain on subsequent run." )
391 unset( __androidStandaloneToolchainPreviousPath )
394 set( ANDROID_STANDALONE_TOOLCHAIN "${ANDROID_STANDALONE_TOOLCHAIN}" CACHE INTERNAL "Path of the Android standalone toolchain" )
395 set( BUILD_WITH_STANDALONE_TOOLCHAIN True )
397 list(GET ANDROID_NDK_SEARCH_PATHS 0 ANDROID_NDK_SEARCH_PATH)
398 message( FATAL_ERROR "Could not find neither Android NDK nor Android standalone toolcahin.
399 You should either set an environment variable:
400 export ANDROID_NDK=~/my-android-ndk
402 export ANDROID_STANDALONE_TOOLCHAIN=~/my-android-toolchain
403 or put the toolchain or NDK in the default path:
404 sudo ln -s ~/my-android-ndk ${ANDROID_NDK_SEARCH_PATH}
405 sudo ln -s ~/my-android-toolchain ${ANDROID_STANDALONE_TOOLCHAIN_SEARCH_PATH}" )
408 #get all the details about standalone toolchain
409 if( BUILD_WITH_STANDALONE_TOOLCHAIN )
410 __DETECT_NATIVE_API_LEVEL( ANDROID_SUPPORTED_NATIVE_API_LEVELS "${ANDROID_STANDALONE_TOOLCHAIN}/sysroot/usr/include/android/api-level.h" )
411 set( __availableToolchains "standalone" )
412 __DETECT_TOOLCHAIN_MACHINE_NAME( __availableToolchainMachines "${ANDROID_STANDALONE_TOOLCHAIN}" )
413 if( NOT __availableToolchainMachines )
414 message( FATAL_ERROR "Could not determine machine name of your toolchain. Probably your Android standalone toolchain is broken." )
416 if( __availableToolchainMachines MATCHES i686 )
417 set( __availableToolchainArchs "x86" )
418 elseif( __availableToolchainMachines MATCHES arm )
419 set( __availableToolchainArchs "arm" )
421 if( ANDROID_COMPILER_VERSION )
422 #do not run gcc every time because it is relatevely expencive
423 set( __availableToolchainCompilerVersions "${ANDROID_COMPILER_VERSION}" )
425 execute_process( COMMAND "${ANDROID_STANDALONE_TOOLCHAIN}/bin/${__availableToolchainMachines}-gcc${TOOL_OS_SUFFIX}" --version
426 OUTPUT_VARIABLE __availableToolchainCompilerVersions OUTPUT_STRIP_TRAILING_WHITESPACE )
427 string( REGEX MATCH "[0-9]+.[0-9]+.[0-9]+" __availableToolchainCompilerVersions "${__availableToolchainCompilerVersions}" )
431 #get all the details about NDK
432 if( BUILD_WITH_ANDROID_NDK )
433 file( GLOB ANDROID_SUPPORTED_NATIVE_API_LEVELS RELATIVE "${ANDROID_NDK}/platforms" "${ANDROID_NDK}/platforms/android-*" )
434 string( REPLACE "android-" "" ANDROID_SUPPORTED_NATIVE_API_LEVELS "${ANDROID_SUPPORTED_NATIVE_API_LEVELS}" )
435 file( GLOB __availableToolchains RELATIVE "${ANDROID_NDK}/toolchains" "${ANDROID_NDK}/toolchains/*" )
436 __LIST_FILTER( __availableToolchains "^[.]" )
437 set( __availableToolchainMachines "" )
438 set( __availableToolchainArchs "" )
439 set( __availableToolchainCompilerVersions "" )
440 foreach( __toolchain ${__availableToolchains} )
441 __DETECT_TOOLCHAIN_MACHINE_NAME( __machine "${ANDROID_NDK}/toolchains/${__toolchain}/prebuilt/${ANDROID_NDK_HOST_SYSTEM_NAME}" )
443 string( REGEX MATCH "[0-9]+.[0-9]+.[0-9]+$" __version "${__toolchain}" )
444 string( REGEX MATCH "^[^-]+" __arch "${__toolchain}" )
445 list( APPEND __availableToolchainMachines ${__machine} )
446 list( APPEND __availableToolchainArchs ${__arch} )
447 list( APPEND __availableToolchainCompilerVersions ${__version} )
449 list( REMOVE_ITEM __availableToolchains "${__toolchain}" )
452 if( NOT __availableToolchains )
453 message( FATAL_ERROR "Could not any working toolchain in the NDK. Probably your Android NDK is broken." )
457 #build list of available ABIs
458 if( NOT ANDROID_SUPPORTED_ABIS )
459 set( ANDROID_SUPPORTED_ABIS "" )
460 set( __uniqToolchainArchNames ${__availableToolchainArchs} )
461 list( REMOVE_DUPLICATES __uniqToolchainArchNames )
462 list( SORT __uniqToolchainArchNames )
463 foreach( __arch ${__uniqToolchainArchNames} )
464 list( APPEND ANDROID_SUPPORTED_ABIS ${ANDROID_SUPPORTED_ABIS_${__arch}} )
466 unset( __uniqToolchainArchNames )
467 if( NOT ANDROID_SUPPORTED_ABIS )
468 message( FATAL_ERROR "No one of known Android ABIs is supported by this cmake toolchain." )
473 __INIT_VARIABLE( ANDROID_ABI OBSOLETE_ARM_TARGET OBSOLETE_ARM_TARGETS VALUES ${ANDROID_SUPPORTED_ABIS} )
474 #verify that target ABI is supported
475 list( FIND ANDROID_SUPPORTED_ABIS "${ANDROID_ABI}" __androidAbiIdx )
476 if( __androidAbiIdx EQUAL -1 )
477 string( REPLACE ";" "\", \"", PRINTABLE_ANDROID_SUPPORTED_ABIS "${ANDROID_SUPPORTED_ABIS}" )
478 message( FATAL_ERROR "Specified ANDROID_ABI = \"${ANDROID_ABI}\" is not supported by this cmake toolchain or your NDK/toolchain.
479 Supported values are: \"${PRINTABLE_ANDROID_SUPPORTED_ABIS}\"
482 unset( __androidAbiIdx )
485 set( ANDROID_ABI "${ANDROID_ABI}" CACHE STRING "The target ABI for Android. If arm, then armeabi-v7a is recommended for hardware floating point." FORCE )
487 #set target ABI options
488 if( ANDROID_ABI STREQUAL "x86" )
490 set( ANDROID_NDK_ABI_NAME "x86" )
491 set( ANDROID_ARCH_NAME "x86" )
492 set( CMAKE_SYSTEM_PROCESSOR "i686" )
493 elseif( ANDROID_ABI STREQUAL "armeabi" )
495 set( ANDROID_NDK_ABI_NAME "armeabi" )
496 set( ANDROID_ARCH_NAME "arm" )
497 set( CMAKE_SYSTEM_PROCESSOR "armv5te" )
498 elseif( ANDROID_ABI STREQUAL "armeabi-v6 with VFP" )
499 set( ARMEABI_V6 true )
500 set( ANDROID_NDK_ABI_NAME "armeabi" )
501 set( ANDROID_ARCH_NAME "arm" )
502 set( CMAKE_SYSTEM_PROCESSOR "armv6" )
503 #need always fallback to older platform
505 elseif( ANDROID_ABI STREQUAL "armeabi-v7a")
506 set( ARMEABI_V7A true )
507 set( ANDROID_NDK_ABI_NAME "armeabi-v7a" )
508 set( ANDROID_ARCH_NAME "arm" )
509 set( CMAKE_SYSTEM_PROCESSOR "armv7-a" )
510 elseif( ANDROID_ABI STREQUAL "armeabi-v7a with VFPV3" )
511 set( ARMEABI_V7A true )
512 set( ANDROID_NDK_ABI_NAME "armeabi-v7a" )
513 set( ANDROID_ARCH_NAME "arm" )
514 set( CMAKE_SYSTEM_PROCESSOR "armv7-a" )
516 elseif( ANDROID_ABI STREQUAL "armeabi-v7a with NEON" )
517 set( ARMEABI_V7A true )
518 set( ANDROID_NDK_ABI_NAME "armeabi-v7a" )
519 set( ANDROID_ARCH_NAME "arm" )
520 set( CMAKE_SYSTEM_PROCESSOR "armv7-a" )
524 message( SEND_ERROR "Unknown ANDROID_ABI=\"${ANDROID_ABI}\" is specified." )
527 set( ANDROID_SUPPORTED_ABIS ${ANDROID_SUPPORTED_ABIS_${ANDROID_ARCH_NAME}} CACHE INTERNAL "ANDROID_ABI can be changed only to one of these ABIs. Changing to any other ABI requires to reset cmake cache." )
528 if( CMAKE_VERSION VERSION_GREATER "2.8" )
529 list( SORT ANDROID_SUPPORTED_ABIS_${ANDROID_ARCH_NAME} )
530 set_property( CACHE ANDROID_ABI PROPERTY STRINGS ${ANDROID_SUPPORTED_ABIS_${ANDROID_ARCH_NAME}} )
533 if( ANDROID_ARCH_NAME STREQUAL "arm" AND NOT ARMEABI_V6 )
534 __INIT_VARIABLE( ANDROID_FORCE_ARM_BUILD OBSOLETE_FORCE_ARM VALUES OFF )
535 set( ANDROID_FORCE_ARM_BUILD ${ANDROID_FORCE_ARM_BUILD} CACHE BOOL "Use 32-bit ARM instructions instead of Thumb-1" FORCE )
536 mark_as_advanced( ANDROID_FORCE_ARM_BUILD )
538 unset( ANDROID_FORCE_ARM_BUILD CACHE )
542 if( ANDROID_TOOLCHAIN_NAME )
543 list( FIND __availableToolchains "${ANDROID_TOOLCHAIN_NAME}" __toolchainIdx )
544 if( __toolchainIdx EQUAL -1 )
545 message( FATAL_ERROR "Previously selected toolchain \"${ANDROID_TOOLCHAIN_NAME}\" is missing. You need to remove CMakeCache.txt and rerun cmake manually to change the toolchain" )
547 list( GET __availableToolchainArchs ${__toolchainIdx} __toolchainArch )
548 if( NOT __toolchainArch STREQUAL ANDROID_ARCH_NAME )
549 message( SEND_ERROR "Previously selected toolchain \"${ANDROID_TOOLCHAIN_NAME}\" is not able to compile binaries for the \"${ANDROID_ARCH_NAME}\" platform." )
552 set( __toolchainIdx -1 )
553 set( __applicableToolchains "" )
554 set( __toolchainMaxVersion "0.0.0" )
555 list( LENGTH __availableToolchains __availableToolchainsCount )
556 math( EXPR __availableToolchainsCount "${__availableToolchainsCount}-1" )
557 foreach( __idx RANGE ${__availableToolchainsCount} )
558 list( GET __availableToolchainArchs ${__idx} __toolchainArch )
559 if( __toolchainArch STREQUAL ANDROID_ARCH_NAME )
560 list( GET __availableToolchainCompilerVersions ${__idx} __toolchainVersion )
561 if( __toolchainVersion VERSION_GREATER __toolchainMaxVersion )
562 set( __toolchainMaxVersion "${__toolchainVersion}" )
563 set( __toolchainIdx ${__idx} )
567 unset( __availableToolchainsCount )
568 unset( __toolchainMaxVersion )
569 unset( __toolchainVersion )
571 unset( __toolchainArch )
572 if( __toolchainIdx EQUAL -1 )
573 message( FATAL_ERROR "No one of available compiler toolchains is able to compile for ${ANDROID_ARCH_NAME} platform." )
575 list( GET __availableToolchains ${__toolchainIdx} ANDROID_TOOLCHAIN_NAME )
576 list( GET __availableToolchainMachines ${__toolchainIdx} ANDROID_TOOLCHAIN_MACHINE_NAME )
577 list( GET __availableToolchainCompilerVersions ${__toolchainIdx} ANDROID_COMPILER_VERSION )
578 set( ANDROID_TOOLCHAIN_NAME "${ANDROID_TOOLCHAIN_NAME}" CACHE INTERNAL "Name of toolchain used" )
579 set( ANDROID_COMPILER_VERSION "${ANDROID_COMPILER_VERSION}" CACHE INTERNAL "compiler version from selected toolchain" )
580 unset( __toolchainIdx )
581 unset( __availableToolchains )
582 unset( __availableToolchainMachines )
583 unset( __availableToolchainArchs )
584 unset( __availableToolchainCompilerVersions )
586 #choose native API level
587 __INIT_VARIABLE( ANDROID_NATIVE_API_LEVEL ENV_ANDROID_NATIVE_API_LEVEL ANDROID_API_LEVEL ENV_ANDROID_API_LEVEL ANDROID_DEFAULT_NDK_API_LEVEL_${ANDROID_ARCH_NAME} ANDROID_DEFAULT_NDK_API_LEVEL )
588 string( REGEX MATCH "[0-9]+" ANDROID_NATIVE_API_LEVEL "${ANDROID_NATIVE_API_LEVEL}" )
590 list( FIND ANDROID_SUPPORTED_NATIVE_API_LEVELS "${ANDROID_NATIVE_API_LEVEL}" __levelIdx )
591 if( __levelIdx EQUAL -1 )
592 message( SEND_ERROR "Specified Android native API level (${ANDROID_NATIVE_API_LEVEL}) is not supported by your NDK/toolchain." )
595 if( BUILD_WITH_ANDROID_NDK )
596 __DETECT_NATIVE_API_LEVEL( __realApiLevel "${ANDROID_NDK}/platforms/android-${ANDROID_NATIVE_API_LEVEL}/arch-${ANDROID_ARCH_NAME}/usr/include/android/api-level.h" )
597 if( NOT __realApiLevel EQUAL ANDROID_NATIVE_API_LEVEL )
598 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." )
600 unset( __realApiLevel )
602 set( ANDROID_NATIVE_API_LEVEL "${ANDROID_NATIVE_API_LEVEL}" CACHE STRING "Android API level for native code" FORCE )
603 if( CMAKE_VERSION VERSION_GREATER "2.8" )
604 list( SORT ANDROID_SUPPORTED_NATIVE_API_LEVELS )
605 set_property( CACHE ANDROID_NATIVE_API_LEVEL PROPERTY STRINGS ${ANDROID_SUPPORTED_NATIVE_API_LEVELS} )
609 if( BUILD_WITH_STANDALONE_TOOLCHAIN )
610 set( ANDROID_TOOLCHAIN_ROOT "${ANDROID_STANDALONE_TOOLCHAIN}" )
611 set( ANDROID_SYSROOT "${ANDROID_STANDALONE_TOOLCHAIN}/sysroot" )
612 set( __stlLibPath "${ANDROID_STANDALONE_TOOLCHAIN}/${ANDROID_TOOLCHAIN_MACHINE_NAME}/lib" )
614 if( BUILD_WITH_ANDROID_NDK )
615 set( ANDROID_TOOLCHAIN_ROOT "${ANDROID_NDK}/toolchains/${ANDROID_TOOLCHAIN_NAME}/prebuilt/${ANDROID_NDK_HOST_SYSTEM_NAME}" )
616 set( ANDROID_SYSROOT "${ANDROID_NDK}/platforms/android-${ANDROID_NATIVE_API_LEVEL}/arch-${ANDROID_ARCH_NAME}" )
617 if( ANDROID_USE_STLPORT )
618 set( __stlIncludePath "${ANDROID_NDK}/sources/cxx-stl/stlport/stlport" )
619 set( __stlLibPath "${ANDROID_NDK}/sources/cxx-stl/stlport/libs/${ANDROID_NDK_ABI_NAME}" )
621 set( __stlIncludePath "${ANDROID_NDK}/sources/cxx-stl/gnu-libstdc++/include" )
622 set( __stlLibPath "${ANDROID_NDK}/sources/cxx-stl/gnu-libstdc++/libs/${ANDROID_NDK_ABI_NAME}" )
626 # specify the cross compiler
627 set( CMAKE_C_COMPILER "${ANDROID_TOOLCHAIN_ROOT}/bin/${ANDROID_TOOLCHAIN_MACHINE_NAME}-gcc${TOOL_OS_SUFFIX}" CACHE PATH "gcc" )
628 set( CMAKE_CXX_COMPILER "${ANDROID_TOOLCHAIN_ROOT}/bin/${ANDROID_TOOLCHAIN_MACHINE_NAME}-g++${TOOL_OS_SUFFIX}" CACHE PATH "g++" )
629 set( CMAKE_STRIP "${ANDROID_TOOLCHAIN_ROOT}/bin/${ANDROID_TOOLCHAIN_MACHINE_NAME}-strip${TOOL_OS_SUFFIX}" CACHE PATH "strip" )
630 #there may be a way to make cmake deduce these TODO deduce the rest of the tools
631 set( CMAKE_AR "${ANDROID_TOOLCHAIN_ROOT}/bin/${ANDROID_TOOLCHAIN_MACHINE_NAME}-ar${TOOL_OS_SUFFIX}" CACHE PATH "archive" )
632 set( CMAKE_LINKER "${ANDROID_TOOLCHAIN_ROOT}/bin/${ANDROID_TOOLCHAIN_MACHINE_NAME}-ld${TOOL_OS_SUFFIX}" CACHE PATH "linker" )
633 set( CMAKE_NM "${ANDROID_TOOLCHAIN_ROOT}/bin/${ANDROID_TOOLCHAIN_MACHINE_NAME}-nm${TOOL_OS_SUFFIX}" CACHE PATH "nm" )
634 set( CMAKE_OBJCOPY "${ANDROID_TOOLCHAIN_ROOT}/bin/${ANDROID_TOOLCHAIN_MACHINE_NAME}-objcopy${TOOL_OS_SUFFIX}" CACHE PATH "objcopy" )
635 set( CMAKE_OBJDUMP "${ANDROID_TOOLCHAIN_ROOT}/bin/${ANDROID_TOOLCHAIN_MACHINE_NAME}-objdump${TOOL_OS_SUFFIX}" CACHE PATH "objdump" )
636 set( CMAKE_RANLIB "${ANDROID_TOOLCHAIN_ROOT}/bin/${ANDROID_TOOLCHAIN_MACHINE_NAME}-ranlib${TOOL_OS_SUFFIX}" CACHE PATH "ranlib" )
638 find_program( CMAKE_INSTALL_NAME_TOOL NAMES install_name_tool )
639 if( NOT CMAKE_INSTALL_NAME_TOOL )
640 message( FATAL_ERROR "Could not find install_name_tool, please check your installation." )
642 mark_as_advanced( CMAKE_INSTALL_NAME_TOOL )
645 set( ANDROID_SYSTEM_INCLUDE_DIRS "" )
646 set( ANDROID_SYSTEM_LIB_DIRS "" )
648 #setup output directories
649 set( LIBRARY_OUTPUT_PATH_ROOT ${CMAKE_SOURCE_DIR} CACHE PATH "root for library output, set this to change where android libs are installed to" )
650 set( CMAKE_INSTALL_PREFIX "${ANDROID_TOOLCHAIN_ROOT}/user" CACHE STRING "path for installing" )
652 set( DO_NOT_CHANGE_OUTPUT_PATHS_ON_FIRST_PASS OFF CACHE BOOL "" )
653 if( DO_NOT_CHANGE_OUTPUT_PATHS_ON_FIRST_PASS )
654 if( EXISTS "${CMAKE_SOURCE_DIR}/jni/CMakeLists.txt" )
655 set( EXECUTABLE_OUTPUT_PATH "${LIBRARY_OUTPUT_PATH_ROOT}/bin/${ANDROID_NDK_ABI_NAME}" CACHE PATH "Output directory for applications" )
657 set( EXECUTABLE_OUTPUT_PATH "${LIBRARY_OUTPUT_PATH_ROOT}/bin" CACHE PATH "Output directory for applications" )
659 set( LIBRARY_OUTPUT_PATH "${LIBRARY_OUTPUT_PATH_ROOT}/libs/${ANDROID_NDK_ABI_NAME}" CACHE PATH "path for android libs" )
661 set( DO_NOT_CHANGE_OUTPUT_PATHS_ON_FIRST_PASS ON CACHE INTERNAL "" FORCE )
664 list( APPEND ANDROID_SYSTEM_INCLUDE_DIRS "${ANDROID_SYSROOT}/usr/include" )
665 if( __stlIncludePath AND EXISTS "${__stlIncludePath}" )
666 list( APPEND ANDROID_SYSTEM_INCLUDE_DIRS "${__stlIncludePath}" )
670 if( __stlLibPath AND EXISTS "${__stlLibPath}/include" )
671 list( APPEND ANDROID_SYSTEM_INCLUDE_DIRS "${__stlLibPath}/include" )
673 if( ANDROID_ARCH_NAME STREQUAL "arm" AND EXISTS "${ANDROID_TOOLCHAIN_ROOT}/${ANDROID_TOOLCHAIN_MACHINE_NAME}/include/c++/${ANDROID_COMPILER_VERSION}/${ANDROID_TOOLCHAIN_MACHINE_NAME}/${CMAKE_SYSTEM_PROCESSOR}/thumb/bits" )
674 list( APPEND ANDROID_SYSTEM_INCLUDE_DIRS "${ANDROID_TOOLCHAIN_ROOT}/${ANDROID_TOOLCHAIN_MACHINE_NAME}/include/c++/${ANDROID_COMPILER_VERSION}/${ANDROID_TOOLCHAIN_MACHINE_NAME}/${CMAKE_SYSTEM_PROCESSOR}/thumb" )
675 elseif( EXISTS "${ANDROID_TOOLCHAIN_ROOT}/${ANDROID_TOOLCHAIN_MACHINE_NAME}/include/c++/${ANDROID_COMPILER_VERSION}/${ANDROID_TOOLCHAIN_MACHINE_NAME}/${CMAKE_SYSTEM_PROCESSOR}/bits" )
676 list( APPEND ANDROID_SYSTEM_INCLUDE_DIRS "${ANDROID_TOOLCHAIN_ROOT}/${ANDROID_TOOLCHAIN_MACHINE_NAME}/include/c++/${ANDROID_COMPILER_VERSION}/${ANDROID_TOOLCHAIN_MACHINE_NAME}/${CMAKE_SYSTEM_PROCESSOR}" )
677 elseif( ANDROID_ARCH_NAME STREQUAL "arm" AND EXISTS "${ANDROID_TOOLCHAIN_ROOT}/${ANDROID_TOOLCHAIN_MACHINE_NAME}/include/c++/${ANDROID_COMPILER_VERSION}/${ANDROID_TOOLCHAIN_MACHINE_NAME}/thumb/bits" )
678 list( APPEND ANDROID_SYSTEM_INCLUDE_DIRS "${ANDROID_TOOLCHAIN_ROOT}/${ANDROID_TOOLCHAIN_MACHINE_NAME}/include/c++/${ANDROID_COMPILER_VERSION}/${ANDROID_TOOLCHAIN_MACHINE_NAME}/thumb" )
679 elseif( EXISTS "${ANDROID_TOOLCHAIN_ROOT}/${ANDROID_TOOLCHAIN_MACHINE_NAME}/include/c++/${ANDROID_COMPILER_VERSION}/${ANDROID_TOOLCHAIN_MACHINE_NAME}/bits" )
680 list( APPEND ANDROID_SYSTEM_INCLUDE_DIRS "${ANDROID_TOOLCHAIN_ROOT}/${ANDROID_TOOLCHAIN_MACHINE_NAME}/include/c++/${ANDROID_COMPILER_VERSION}/${ANDROID_TOOLCHAIN_MACHINE_NAME}" )
683 #flags and definitions
684 if(ANDROID_SYSROOT MATCHES "[ ;\"]")
685 set( ANDROID_CXX_FLAGS "--sysroot=\"${ANDROID_SYSROOT}\"" )
686 # quotes will break try_compile and compiler identification
687 message(WARNING "Your Android system root has non-alphanumeric symbols. It can break compiler features detection and the whole build.")
689 set( ANDROID_CXX_FLAGS "--sysroot=${ANDROID_SYSROOT}" )
692 remove_definitions( -DANDROID )
693 add_definitions( -DANDROID )
695 # Force set compilers because standard identification works badly for us
696 include( CMakeForceCompiler )
697 CMAKE_FORCE_C_COMPILER( "${CMAKE_C_COMPILER}" GNU )
698 CMAKE_FORCE_CXX_COMPILER( "${CMAKE_CXX_COMPILER}" GNU )
699 set( CMAKE_SIZEOF_VOID_P 4 )
700 set( CMAKE_C_SIZEOF_DATA_PTR 4 )
701 set( CMAKE_CXX_SIZEOF_DATA_PTR 4 )
704 if( ARMEABI OR ARMEABI_V7A )
705 # NDK also defines -ffunction-sections -funwind-tables but they result in worse OpenCV performance
706 set( CMAKE_CXX_FLAGS "-fPIC -Wno-psabi" )
707 set( CMAKE_C_FLAGS "-fPIC -Wno-psabi" )
708 if( ANDROID_USE_STLPORT )
709 set( CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fno-rtti -fno-exceptions" )
710 set( CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fno-rtti -fno-exceptions" )
712 set( CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -frtti -fexceptions" )
713 set( CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fexceptions" )
715 remove_definitions( -D__ARM_ARCH_5__ -D__ARM_ARCH_5T__ -D__ARM_ARCH_5E__ -D__ARM_ARCH_5TE__ )
716 add_definitions( -D__ARM_ARCH_5__ -D__ARM_ARCH_5T__ -D__ARM_ARCH_5E__ -D__ARM_ARCH_5TE__ )
717 # extra arm-specific flags
718 set( ANDROID_CXX_FLAGS "${ANDROID_CXX_FLAGS} -fsigned-char" )
720 set( CMAKE_CXX_FLAGS "-ffunction-sections -funwind-tables" )
721 set( CMAKE_C_FLAGS "-ffunction-sections -funwind-tables" )
722 if( ANDROID_USE_STLPORT )
723 set( CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fno-rtti -fno-exceptions" )
724 set( CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fno-rtti -fno-exceptions" )
726 set( CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -frtti -fexceptions" )
727 set( CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fexceptions" )
730 set( CMAKE_CXX_FLAGS "" )
731 set( CMAKE_C_FLAGS "" )
734 #release and debug flags
735 if( ARMEABI OR ARMEABI_V7A )
736 if( NOT ANDROID_FORCE_ARM_BUILD AND NOT ARMEABI_V6 )
737 #It is recommended to use the -mthumb compiler flag to force the generation
738 #of 16-bit Thumb-1 instructions (the default being 32-bit ARM ones).
739 # O3 instead of O2/Os in release mode - like cmake sets for desktop gcc
740 set( CMAKE_CXX_FLAGS_RELEASE "-mthumb -O3" )
741 set( CMAKE_C_FLAGS_RELEASE "-mthumb -O3" )
742 set( CMAKE_CXX_FLAGS_DEBUG "-marm -Os -finline-limit=64" )
743 set( CMAKE_C_FLAGS_DEBUG "-marm -Os -finline-limit=64" )
745 # always compile ARMEABI_V6 in arm mode; otherwise there is no difference from ARMEABI
746 # O3 instead of O2/Os in release mode - like cmake sets for desktop gcc
747 set( CMAKE_CXX_FLAGS_RELEASE "-marm -O3 -fstrict-aliasing" )
748 set( CMAKE_C_FLAGS_RELEASE "-marm -O3 -fstrict-aliasing" )
749 set( CMAKE_CXX_FLAGS_DEBUG "-marm -O0 -finline-limit=300" )
750 set( CMAKE_C_FLAGS_DEBUG "-marm -O0 -finline-limit=300" )
753 set( CMAKE_CXX_FLAGS_RELEASE "-O3 -fstrict-aliasing" )
754 set( CMAKE_C_FLAGS_RELEASE "-O3 -fstrict-aliasing" )
755 set( CMAKE_CXX_FLAGS_DEBUG "-O0 -finline-limit=300" )
756 set( CMAKE_C_FLAGS_DEBUG "-O0 -finline-limit=300" )
758 set( CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -fomit-frame-pointer -DNDEBUG" )
759 set( CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} -fomit-frame-pointer -DNDEBUG" )
760 set( CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -fno-strict-aliasing -fno-omit-frame-pointer -DDEBUG -D_DEBUG" )
761 set( CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -fno-strict-aliasing -fno-omit-frame-pointer -DDEBUG -D_DEBUG" )
765 set( ANDROID_CXX_FLAGS "${ANDROID_CXX_FLAGS} -march=armv7-a -mfloat-abi=softfp" )
767 set( ANDROID_CXX_FLAGS "${ANDROID_CXX_FLAGS} -mfpu=neon" )
769 set( ANDROID_CXX_FLAGS "${ANDROID_CXX_FLAGS} -mfpu=vfpv3" )
771 set( ANDROID_CXX_FLAGS "${ANDROID_CXX_FLAGS} -mfpu=vfp" )
774 set( ANDROID_CXX_FLAGS "${ANDROID_CXX_FLAGS} -march=armv6 -mfloat-abi=softfp -mfpu=vfp" )
776 set( ANDROID_CXX_FLAGS "${ANDROID_CXX_FLAGS} -march=armv5te -mtune=xscale -msoft-float" )
778 set( ANDROID_CXX_FLAGS "${ANDROID_CXX_FLAGS}" )#sse?
782 list( APPEND ANDROID_SYSTEM_LIB_DIRS "${CMAKE_BINARY_DIR}/systemlibs/${ANDROID_NDK_ABI_NAME}" "${CMAKE_INSTALL_PREFIX}/libs/${ANDROID_NDK_ABI_NAME}" )
783 set( LINKER_FLAGS "" )
785 if( ANDROID_USE_STLPORT )
786 if( EXISTS "${__stlLibPath}/libstlport_static.a" )
787 __COPY_IF_DIFFERENT( "${__stlLibPath}/libstlport_static.a" "${CMAKE_BINARY_DIR}/systemlibs/${ANDROID_NDK_ABI_NAME}/libstlport_static.a" )
789 if( EXISTS "${CMAKE_BINARY_DIR}/systemlibs/${ANDROID_NDK_ABI_NAME}/libstlport_static.a" )
790 set( LINKER_FLAGS "${LINKER_FLAGS} -Wl,--start-group -lstlport_static" )
792 else( ANDROID_USE_STLPORT )
793 if( EXISTS "${__stlLibPath}/libgnustl_static.a" )
794 __COPY_IF_DIFFERENT( "${__stlLibPath}/libgnustl_static.a" "${CMAKE_BINARY_DIR}/systemlibs/${ANDROID_NDK_ABI_NAME}/libstdc++.a" )
795 elseif( ANDROID_ARCH_NAME STREQUAL "arm" AND EXISTS "${__stlLibPath}/${CMAKE_SYSTEM_PROCESSOR}/thumb/libstdc++.a" )
796 __COPY_IF_DIFFERENT( "${__stlLibPath}/${CMAKE_SYSTEM_PROCESSOR}/thumb/libstdc++.a" "${CMAKE_BINARY_DIR}/systemlibs/${ANDROID_NDK_ABI_NAME}/libstdc++.a" )
797 elseif( ANDROID_ARCH_NAME STREQUAL "arm" AND EXISTS "${__stlLibPath}/${CMAKE_SYSTEM_PROCESSOR}/libstdc++.a" )
798 __COPY_IF_DIFFERENT( "${__stlLibPath}/${CMAKE_SYSTEM_PROCESSOR}/libstdc++.a" "${CMAKE_BINARY_DIR}/systemlibs/${ANDROID_NDK_ABI_NAME}/libstdc++.a" )
799 elseif( ANDROID_ARCH_NAME STREQUAL "arm" AND EXISTS "${__stlLibPath}/thumb/libstdc++.a" )
800 __COPY_IF_DIFFERENT( "${__stlLibPath}/thumb/libstdc++.a" "${CMAKE_BINARY_DIR}/systemlibs/${ANDROID_NDK_ABI_NAME}/libstdc++.a" )
801 elseif( EXISTS "${__stlLibPath}/libstdc++.a" )
802 __COPY_IF_DIFFERENT( "${__stlLibPath}/libstdc++.a" "${CMAKE_BINARY_DIR}/systemlibs/${ANDROID_NDK_ABI_NAME}/libstdc++.a" )
804 if( EXISTS "${CMAKE_BINARY_DIR}/systemlibs/${ANDROID_NDK_ABI_NAME}/libstdc++.a" )
805 set( LINKER_FLAGS "${LINKER_FLAGS} -lstdc++" )
808 #gcc exception & rtti support
809 if( EXISTS "${__stlLibPath}/libsupc++.a" )
810 __COPY_IF_DIFFERENT( "${__stlLibPath}/libsupc++.a" "${CMAKE_BINARY_DIR}/systemlibs/${ANDROID_NDK_ABI_NAME}/libsupc++.a" )
811 elseif( ANDROID_ARCH_NAME STREQUAL "arm" AND EXISTS "${ANDROID_TOOLCHAIN_ROOT}/${ANDROID_TOOLCHAIN_MACHINE_NAME}/lib/${CMAKE_SYSTEM_PROCESSOR}/thumb/libsupc++.a" )
812 __COPY_IF_DIFFERENT( "${ANDROID_TOOLCHAIN_ROOT}/${ANDROID_TOOLCHAIN_MACHINE_NAME}/lib/${CMAKE_SYSTEM_PROCESSOR}/thumb/libsupc++.a" "${CMAKE_BINARY_DIR}/systemlibs/${ANDROID_NDK_ABI_NAME}/libsupc++.a" )
813 elseif( ANDROID_ARCH_NAME STREQUAL "arm" AND EXISTS "${ANDROID_TOOLCHAIN_ROOT}/${ANDROID_TOOLCHAIN_MACHINE_NAME}/lib/${CMAKE_SYSTEM_PROCESSOR}/libsupc++.a" )
814 __COPY_IF_DIFFERENT( "${ANDROID_TOOLCHAIN_ROOT}/${ANDROID_TOOLCHAIN_MACHINE_NAME}/lib/${CMAKE_SYSTEM_PROCESSOR}/libsupc++.a" "${CMAKE_BINARY_DIR}/systemlibs/${ANDROID_NDK_ABI_NAME}/libsupc++.a" )
815 elseif( ANDROID_ARCH_NAME STREQUAL "arm" AND EXISTS "${ANDROID_TOOLCHAIN_ROOT}/${ANDROID_TOOLCHAIN_MACHINE_NAME}/lib/thumb/libsupc++.a" )
816 __COPY_IF_DIFFERENT( "${ANDROID_TOOLCHAIN_ROOT}/${ANDROID_TOOLCHAIN_MACHINE_NAME}/lib/thumb/libsupc++.a" "${CMAKE_BINARY_DIR}/systemlibs/${ANDROID_NDK_ABI_NAME}/libsupc++.a" )
817 elseif( EXISTS "${ANDROID_TOOLCHAIN_ROOT}/${ANDROID_TOOLCHAIN_MACHINE_NAME}/lib/libsupc++.a" )
818 __COPY_IF_DIFFERENT( "${ANDROID_TOOLCHAIN_ROOT}/${ANDROID_TOOLCHAIN_MACHINE_NAME}/lib/libsupc++.a" "${CMAKE_BINARY_DIR}/systemlibs/${ANDROID_NDK_ABI_NAME}/libsupc++.a" )
820 if( EXISTS "${CMAKE_BINARY_DIR}/systemlibs/${ANDROID_NDK_ABI_NAME}/libsupc++.a" )
821 set( LINKER_FLAGS "${LINKER_FLAGS} -lsupc++" )
823 endif( ANDROID_USE_STLPORT )
825 #cleanup for STL search
826 unset( __stlIncludePath )
827 unset( __stlLibPath )
830 __INIT_VARIABLE( ANDROID_NO_UNDEFINED OBSOLETE_NO_UNDEFINED VALUES ON )
831 set( ANDROID_NO_UNDEFINED ${ANDROID_NO_UNDEFINED} CACHE BOOL "Show all undefined symbols as linker errors" FORCE )
832 mark_as_advanced( ANDROID_NO_UNDEFINED )
833 if( ANDROID_NO_UNDEFINED )
834 set( LINKER_FLAGS "-Wl,--no-undefined ${LINKER_FLAGS}" )
837 if (ANDROID_NDK MATCHES "-r[56].?$")
838 #libGLESv2.so in NDK's prior to r7 refers to exteranal symbols. So this flag option is required for all projects using OpenGL from native.
839 __INIT_VARIABLE( ANDROID_SO_UNDEFINED VALUES ON )
841 __INIT_VARIABLE( ANDROID_SO_UNDEFINED VALUES OFF )
843 set( ANDROID_SO_UNDEFINED ${ANDROID_SO_UNDEFINED} CACHE BOOL "Allows or disallows undefined symbols in shared libraries" FORCE )
844 mark_as_advanced( ANDROID_SO_UNDEFINED )
845 if( ANDROID_SO_UNDEFINED )
846 set( LINKER_FLAGS "${LINKER_FLAGS} -Wl,-allow-shlib-undefined" )
850 # this is *required* to use the following linker flags that routes around
851 # a CPU bug in some Cortex-A8 implementations:
852 set( LINKER_FLAGS "-Wl,--fix-cortex-a8 ${LINKER_FLAGS}" )
856 set( CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}" CACHE STRING "c++ flags" )
857 set( CMAKE_C_FLAGS "${CMAKE_CXX_FLAGS}" CACHE STRING "c flags" )
858 set( CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE}" CACHE STRING "c++ Release flags" )
859 set( CMAKE_C_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE}" CACHE STRING "c Release flags" )
860 set( CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG}" CACHE STRING "c++ Debug flags" )
861 set( CMAKE_C_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG}" CACHE STRING "c Debug flags" )
862 set( CMAKE_SHARED_LINKER_FLAGS "${LINKER_FLAGS}" CACHE STRING "linker flags" )
863 set( CMAKE_MODULE_LINKER_FLAGS "${LINKER_FLAGS}" CACHE STRING "linker flags" )
864 set( CMAKE_EXE_LINKER_FLAGS "-Wl,--gc-sections -Wl,-z,nocopyreloc ${LINKER_FLAGS}" CACHE STRING "linker flags" )
866 include_directories( SYSTEM ${ANDROID_SYSTEM_INCLUDE_DIRS} )
867 link_directories( ${ANDROID_SYSTEM_LIB_DIRS} )
870 set( ANDROID_CXX_FLAGS "${ANDROID_CXX_FLAGS}" CACHE INTERNAL "Extra Android falgs")
871 set( CMAKE_CXX_FLAGS "${ANDROID_CXX_FLAGS} ${CMAKE_CXX_FLAGS}" )
872 set( CMAKE_C_FLAGS "${ANDROID_CXX_FLAGS} ${CMAKE_C_FLAGS}" )
874 #set these global flags for cmake client scripts to change behavior
876 set( BUILD_ANDROID True )
878 # where is the target environment
879 set( CMAKE_FIND_ROOT_PATH "${ANDROID_TOOLCHAIN_ROOT}/bin" "${ANDROID_TOOLCHAIN_ROOT}/${ANDROID_TOOLCHAIN_MACHINE_NAME}" "${ANDROID_SYSROOT}" "${CMAKE_INSTALL_PREFIX}" "${CMAKE_INSTALL_PREFIX}/share" )
881 # only search for libraries and includes in the ndk toolchain
882 set( CMAKE_FIND_ROOT_PATH_MODE_PROGRAM ONLY )
883 set( CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY )
884 set( CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY )
887 #macro to find packages on the host OS
888 macro( find_host_package )
889 set( CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER )
890 set( CMAKE_FIND_ROOT_PATH_MODE_LIBRARY NEVER )
891 set( CMAKE_FIND_ROOT_PATH_MODE_INCLUDE NEVER )
892 if( CMAKE_HOST_WIN32 )
895 elseif( CMAKE_HOST_APPLE )
899 find_package( ${ARGN} )
903 set( CMAKE_FIND_ROOT_PATH_MODE_PROGRAM ONLY )
904 set( CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY )
905 set( CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY )
909 #macro to find programs on the host OS
910 macro( find_host_program )
911 set( CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER )
912 set( CMAKE_FIND_ROOT_PATH_MODE_LIBRARY NEVER )
913 set( CMAKE_FIND_ROOT_PATH_MODE_INCLUDE NEVER )
914 if( CMAKE_HOST_WIN32 )
917 elseif( CMAKE_HOST_APPLE )
921 find_program( ${ARGN} )
925 set( CMAKE_FIND_ROOT_PATH_MODE_PROGRAM ONLY )
926 set( CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY )
927 set( CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY )
931 macro( ANDROID_GET_ABI_RAWNAME TOOLCHAIN_FLAG VAR )
932 if( "${TOOLCHAIN_FLAG}" STREQUAL "ARMEABI" )
933 set( ${VAR} "armeabi" )
934 elseif( "${TOOLCHAIN_FLAG}" STREQUAL "ARMEABI_V7A" )
935 set( ${VAR} "armeabi-v7a" )
936 elseif( "${TOOLCHAIN_FLAG}" STREQUAL "X86" )
939 set( ${VAR} "unknown" )
944 # export toolchain settings for the try_compile() command
945 if( NOT PROJECT_NAME STREQUAL "CMAKE_TRY_COMPILE" )
946 set( __toolchain_config "")
947 foreach( __var ANDROID_ABI ANDROID_FORCE_ARM_BUILD ANDROID_NATIVE_API_LEVEL ANDROID_NO_UNDEFINED ANDROID_SO_UNDEFINED ANDROID_SET_OBSOLETE_VARIABLES LIBRARY_OUTPUT_PATH_ROOT ANDROID_USE_STLPORT ANDROID_FORBID_SYGWIN ANDROID_NDK ANDROID_STANDALONE_TOOLCHAIN )
948 if( DEFINED ${__var} )
949 set( __toolchain_config "${__toolchain_config}set( ${__var} \"${${__var}}\" )\n" )
952 file( WRITE "${CMAKE_CURRENT_BINARY_DIR}/CMakeFiles/android.toolchain.config.cmake" "${__toolchain_config}" )
953 unset( __toolchain_config )
957 # set some obsolete variables for backward compatibility
958 set( ANDROID_SET_OBSOLETE_VARIABLES ON CACHE BOOL "Define obsolete Andrid-specific cmake variables" )
959 mark_as_advanced( ANDROID_SET_OBSOLETE_VARIABLES )
960 if( ANDROID_SET_OBSOLETE_VARIABLES )
961 set( ANDROID_API_LEVEL ${ANDROID_NATIVE_API_LEVEL} )
962 set( ARM_TARGET "${ANDROID_ABI}" )
963 set( ARMEABI_NDK_NAME "${ANDROID_NDK_ABI_NAME}" )
966 # Variables controlling behavior or set by cmake toolchain:
967 # ANDROID_ABI : "armeabi-v7a" (default), "armeabi", "armeabi-v7a with NEON", "armeabi-v7a with VFPV3", "armeabi-v6 with VFP", "x86"
968 # ANDROID_FORCE_ARM_BUILD : ON/OFF
969 # ANDROID_NATIVE_API_LEVEL : 3,4,5,8,9,14 (depends on NDK version)
970 # ANDROID_NO_UNDEFINED : ON/OFF
971 # ANDROID_SO_UNDEFINED : OFF/ON (default depends on NDK version)
972 # ANDROID_SET_OBSOLETE_VARIABLES : ON/OFF
973 # LIBRARY_OUTPUT_PATH_ROOT : <any valid path>
974 # ANDROID_USE_STLPORT : OFF/ON - EXPERIMENTAL!!!
975 # ANDROID_FORBID_SYGWIN : ON/OFF
976 # Can be set only at the first run:
978 # ANDROID_STANDALONE_TOOLCHAIN
980 # ANDROID_API_LEVEL : superseded by ANDROID_NATIVE_API_LEVEL
981 # ARM_TARGET : superseded by ANDROID_ABI
982 # ARM_TARGETS : superseded by ANDROID_ABI (can be set only)
983 # ANDROID_NDK_TOOLCHAIN_ROOT : superseded by ANDROID_STANDALONE_TOOLCHAIN (can be set only)
984 # ANDROID_LEVEL : superseded by ANDROID_NATIVE_API_LEVEL (completely removed)
986 # Primary read-only variables:
987 # ANDROID : always TRUE
988 # ARMEABI : TRUE for arm v6 and older devices
989 # ARMEABI_V6 : TRUE for arm v6
990 # ARMEABI_V7A : TRUE for arm v7a
991 # NEON : TRUE if NEON unit is enabled
992 # VFPV3 : TRUE if VFP version 3 is enabled
993 # X86 : TRUE if configured for x86
994 # BUILD_ANDROID : always TRUE
995 # BUILD_WITH_ANDROID_NDK : TRUE if NDK is used
996 # BUILD_WITH_STANDALONE_TOOLCHAIN : TRUE if standalone toolchain is used
997 # ANDROID_NDK_HOST_SYSTEM_NAME : "windows", "linux-x86" or "darwin-x86" depending on host platform
998 # ANDROID_NDK_ABI_NAME : "armeabi", "armeabi-v7a" or "x86" depending on ANDROID_ABI
999 # ANDROID_ARCH_NAME : "arm" or "x86" depending on ANDROID_ABI
1000 # TOOL_OS_SUFFIX : "" or ".exe" depending on host platform
1001 # ANDROID_SYSTEM_INCLUDE_DIRS
1002 # ANDROID_SYSTEM_LIB_DIRS
1004 # ARMEABI_NDK_NAME : superseded by ANDROID_NDK_ABI_NAME
1006 # Secondary (less stable) read-only variables:
1007 # ANDROID_COMPILER_VERSION : GCC version used
1008 # ANDROID_CXX_FLAGS : C/C++ compiler flags required by Android platform
1009 # ANDROID_SUPPORTED_ABIS : list of currently allowed values for ANDROID_ABI
1010 # ANDROID_SYSROOT : path to the compiler sysroot
1011 # ANDROID_TOOLCHAIN_NAME : "standalone", "arm-linux-androideabi-4.4.3" or "x86-4.4.3" or something similar.
1012 # ANDROID_TOOLCHAIN_MACHINE_NAME : "arm-linux-androideabi", "arm-eabi" or "i686-android-linux"
1013 # ANDROID_TOOLCHAIN_ROOT : path to the top level of toolchain (standalone or placed inside NDK)
1014 # ANDROID_SUPPORTED_NATIVE_API_LEVELS : list of native API levels found inside NDK
1017 # ANDROID_DEFAULT_NDK_API_LEVEL
1018 # ANDROID_DEFAULT_NDK_API_LEVEL_${ARCH}
1019 # ANDROID_NDK_SEARCH_PATHS
1020 # ANDROID_STANDALONE_TOOLCHAIN_SEARCH_PATH
1021 # ANDROID_SUPPORTED_ABIS_${ARCH}
1022 # ANDROID_SUPPORTED_NDK_VERSIONS