1 # ------------------------------------------------------------------------------
2 # Android CMake toolchain file, for use with the Android NDK r5-r8
3 # Requires cmake 2.6.3 or newer (2.8.5 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/projects/opencv/repository/revisions/master/changes/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 (or newer) 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.
48 # Possible targets are:
49 # "armeabi" - matches to the NDK ABI with the same name.
50 # See ${ANDROID_NDK}/docs/CPU-ARCH-ABIS.html for the documentation.
51 # "armeabi-v7a" - matches to the NDK ABI with the same name.
52 # See ${ANDROID_NDK}/docs/CPU-ARCH-ABIS.html for the documentation.
53 # "armeabi-v7a with NEON" - same as armeabi-v7a, but
54 # sets NEON as floating-point unit
55 # "armeabi-v7a with VFPV3" - same as armeabi-v7a, but
56 # sets VFPV3 as floating-point unit (has 32 registers instead of 16).
57 # "armeabi-v6 with VFP" - tuned for ARMv6 processors having VFP.
58 # "x86" - matches to the NDK ABI with the same name.
59 # See ${ANDROID_NDK}/docs/CPU-ARCH-ABIS.html for the documentation.
60 # "mips" - matches to the NDK ABI with the same name
61 # (not testes on real devices)
63 # ANDROID_NATIVE_API_LEVEL=android-8 - level of Android API compile for.
64 # Option is read-only when standalone toolchain used.
66 # ANDROID_FORCE_ARM_BUILD=OFF - set true to generate 32-bit ARM instructions
67 # instead of Thumb-1. Is not available for "x86" (inapplicable) and
68 # "armeabi-v6 with VFP" (forced) ABIs.
70 # ANDROID_NO_UNDEFINED=ON - set true to show all undefined symbols as linker
71 # errors even if they are not used.
73 # ANDROID_SO_UNDEFINED=OFF - set true to allow undefined symbols in shared
74 # libraries. Automatically turned on for NDK r5x and r6x due to GLESv2
77 # LIBRARY_OUTPUT_PATH_ROOT=${CMAKE_SOURCE_DIR} - where to output binary
78 # files. See additional details below.
80 # ANDROID_SET_OBSOLETE_VARIABLES=ON - it set, then toolchain defines some
81 # obsolete variables which were set by previous versions of this file for
82 # backward compatibility.
86 # android-cmake toolchain searches for NDK/toolchain in the following order:
87 # ANDROID_NDK - cmake parameter
88 # ANDROID_NDK - environment variable
89 # ANDROID_STANDALONE_TOOLCHAIN - cmake parameter
90 # ANDROID_STANDALONE_TOOLCHAIN - environment variable
91 # ANDROID_NDK - default locations
92 # ANDROID_STANDALONE_TOOLCHAIN - default locations
94 # Make sure to do the following in your scripts:
95 # SET( CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${my_cxx_flags}" )
96 # SET( CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${my_cxx_flags}" )
97 # The flags will be prepopulated with critical flags, so don't loose them.
98 # Also be aware that toolchain also sets configuration-specific compiler
99 # flags and linker flags.
101 # ANDROID and BUILD_ANDROID will be set to true, you may test any of these
102 # variables to make necessary Android-specific configuration changes.
104 # Also ARMEABI or ARMEABI_V7A or X86 will be set true, mutually exclusive.
105 # NEON option will be set true if VFP is set to NEON.
107 # LIBRARY_OUTPUT_PATH_ROOT should be set in cache to determine where Android
108 # libraries will be installed.
109 # Default is ${CMAKE_SOURCE_DIR}, and the android libs will always be
110 # under the ${LIBRARY_OUTPUT_PATH_ROOT}/libs/${ANDROID_NDK_ABI_NAME}
111 # (depending on the target ABI). This is convenient for Android packaging.
114 # Ethan Rublee ethan.ruble@gmail.com
115 # Andrey Kamaev andrey.kamaev@itseez.com
118 # - initial version December 2010
119 # - modified April 2011
120 # [+] added possibility to build with NDK (without standalone toolchain)
121 # [+] support cross-compilation on Windows (native, no cygwin support)
122 # [+] added compiler option to force "char" type to be signed
123 # [+] added toolchain option to compile to 32-bit ARM instructions
124 # [+] added toolchain option to disable SWIG search
125 # [+] added platform "armeabi-v7a with VFPV3"
126 # [~] ARM_TARGETS renamed to ARM_TARGET
127 # [+] EXECUTABLE_OUTPUT_PATH is set by toolchain (required on Windows)
128 # [~] Fixed bug with ANDROID_API_LEVEL variable
129 # [~] turn off SWIG search if it is not found first time
130 # - modified May 2011
131 # [~] ANDROID_LEVEL is renamed to ANDROID_API_LEVEL
132 # [+] ANDROID_API_LEVEL is detected by toolchain if not specified
133 # [~] added guard to prevent changing of output directories on the first
135 # [~] toolchain exits with error if ARM_TARGET is not recognized
136 # - modified June 2011
137 # [~] default NDK path is updated for version r5c
138 # [+] variable CMAKE_SYSTEM_PROCESSOR is set based on ARM_TARGET
139 # [~] toolchain install directory is added to linker paths
140 # [-] removed SWIG-related stuff from toolchain
141 # [+] added macro find_host_package, find_host_program to search
142 # packages/programs on the host system
143 # [~] fixed path to STL library
144 # - modified July 2011
145 # [~] fixed options caching
146 # [~] search for all supported NDK versions
147 # [~] allowed spaces in NDK path
148 # - modified September 2011
149 # [~] updated for NDK r6b
150 # - modified November 2011
151 # [*] rewritten for NDK r7
152 # [+] x86 toolchain support (experimental)
153 # [+] added "armeabi-v6 with VFP" ABI for ARMv6 processors.
154 # [~] improved compiler and linker flags management
155 # [+] support different build flags for Release and Debug configurations
156 # [~] by default compiler flags the same as used by ndk-build (but only
158 # [~] ANDROID_NDK_TOOLCHAIN_ROOT is splitted to ANDROID_STANDALONE_TOOLCHAIN
159 # and ANDROID_TOOLCHAIN_ROOT
160 # [~] ARM_TARGET is renamed to ANDROID_ABI
161 # [~] ARMEABI_NDK_NAME is renamed to ANDROID_NDK_ABI_NAME
162 # [~] ANDROID_API_LEVEL is renamed to ANDROID_NATIVE_API_LEVEL
163 # - modified January 2012
164 # [+] added stlport_static support (experimental)
165 # [+] added special check for cygwin
166 # [+] filtered out hidden files (starting with .) while globbing inside NDK
167 # [+] automatically applied GLESv2 linkage fix for NDK revisions 5-6
168 # [+] added ANDROID_GET_ABI_RAWNAME to get NDK ABI names by CMake flags
169 # - modified February 2012
170 # [+] updated for NDK r7b
171 # [~] fixed cmake try_compile() command
172 # [~] Fix for missing install_name_tool on OS X
173 # - modified March 2012
174 # [~] fixed incorrect C compiler flags
175 # [~] fixed CMAKE_SYSTEM_PROCESSOR change on ANDROID_ABI change
176 # [+] improved toolchain loading speed
177 # [+] added assembler language support (.S)
178 # [+] allowed preset search paths and extra search suffixes
179 # - modified April 2012
180 # [+] updated for NDK r7c
181 # [~] fixed most of problems with compiler/linker flags and caching
182 # [+] added option ANDROID_FUNCTION_LEVEL_LINKING
183 # - modified May 2012
184 # [+] updated for NDK r8
185 # [+] added mips architecture support
186 # - modified August 2012
187 # [+] updated for NDK r8b
188 # [~] all intermediate files generated by toolchain are moved into CMakeFiles
189 # [~] libstdc++ and libsupc are removed from explicit link libraries
190 # ------------------------------------------------------------------------------
192 cmake_minimum_required( VERSION 2.6.3 )
194 if( DEFINED CMAKE_CROSSCOMPILING )
195 # subsequent toolchain loading is not really needed
199 get_property(_CMAKE_IN_TRY_COMPILE GLOBAL PROPERTY IN_TRY_COMPILE)
200 if( _CMAKE_IN_TRY_COMPILE )
201 include( "${CMAKE_CURRENT_SOURCE_DIR}/../android.toolchain.config.cmake" OPTIONAL )
204 # this one is important
205 set( CMAKE_SYSTEM_NAME Linux )
206 # this one not so much
207 set( CMAKE_SYSTEM_VERSION 1 )
209 set( ANDROID_SUPPORTED_NDK_VERSIONS ${ANDROID_EXTRA_NDK_VERSIONS} -r8b -r8 -r7c -r7b -r7 -r6b -r6 -r5c -r5b -r5 "" )
210 if(NOT DEFINED ANDROID_NDK_SEARCH_PATHS)
211 if( CMAKE_HOST_WIN32 )
212 file( TO_CMAKE_PATH "$ENV{PROGRAMFILES}" ANDROID_NDK_SEARCH_PATHS )
213 set( ANDROID_NDK_SEARCH_PATHS "${ANDROID_NDK_SEARCH_PATHS}/android-ndk" "$ENV{SystemDrive}/NVPACK/android-ndk" )
215 file( TO_CMAKE_PATH "$ENV{HOME}" ANDROID_NDK_SEARCH_PATHS )
216 set( ANDROID_NDK_SEARCH_PATHS /opt/android-ndk "${ANDROID_NDK_SEARCH_PATHS}/NVPACK/android-ndk" )
219 if(NOT DEFINED ANDROID_STANDALONE_TOOLCHAIN_SEARCH_PATH)
220 set( ANDROID_STANDALONE_TOOLCHAIN_SEARCH_PATH /opt/android-toolchain )
223 set( ANDROID_SUPPORTED_ABIS_arm "armeabi-v7a;armeabi;armeabi-v7a with NEON;armeabi-v7a with VFPV3;armeabi-v6 with VFP" )
224 set( ANDROID_SUPPORTED_ABIS_x86 "x86" )
225 set( ANDROID_SUPPORTED_ABIS_mipsel "mips" )
227 set( ANDROID_DEFAULT_NDK_API_LEVEL 8 )
228 set( ANDROID_DEFAULT_NDK_API_LEVEL_x86 9 )
229 set( ANDROID_DEFAULT_NDK_API_LEVEL_mips 9 )
232 macro( __LIST_FILTER listvar regex )
234 foreach( __val ${${listvar}} )
235 if( __val MATCHES "${regex}" )
236 list( REMOVE_ITEM ${listvar} "${__val}" )
242 macro( __INIT_VARIABLE var_name )
244 foreach( __var ${ARGN} )
245 if( __var STREQUAL "PATH" )
250 if( __test_path AND NOT EXISTS "${${var_name}}" )
251 unset( ${var_name} CACHE )
253 if( "${${var_name}}" STREQUAL "" )
255 foreach( __var ${ARGN} )
256 if( __var STREQUAL "VALUES" )
258 elseif( NOT __var STREQUAL "PATH" )
260 if( __var MATCHES "^OBSOLETE_.*$" )
261 string( REPLACE "OBSOLETE_" "" __var "${__var}" )
264 if( __var MATCHES "^ENV_.*$" )
265 string( REPLACE "ENV_" "" __var "${__var}" )
266 set( __value "$ENV{${__var}}" )
267 elseif( DEFINED ${__var} )
268 set( __value "${${__var}}" )
271 set( __value "${__var}" )
276 if( NOT "${__value}" STREQUAL "" )
278 if( EXISTS "${__value}" )
279 set( ${var_name} "${__value}" )
281 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." )
286 set( ${var_name} "${__value}" )
288 message( WARNING "Using value of obsolete variable ${__var} as initial value for ${var_name}. Please note, that ${__var} can be completely removed in future versions of the toolchain." )
302 macro( __DETECT_NATIVE_API_LEVEL _var _path )
303 SET( __ndkApiLevelRegex "^[\t ]*#define[\t ]+__ANDROID_API__[\t ]+([0-9]+)[\t ]*$" )
304 FILE( STRINGS ${_path} __apiFileContent REGEX "${__ndkApiLevelRegex}" )
305 if( NOT __apiFileContent )
306 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." )
308 string( REGEX REPLACE "${__ndkApiLevelRegex}" "\\1" ${_var} "${__apiFileContent}" )
309 unset( __apiFileContent )
310 unset( __ndkApiLevelRegex )
313 macro( __DETECT_TOOLCHAIN_MACHINE_NAME _var _root )
314 file( GLOB __gccExePath "${_root}/bin/*-gcc${TOOL_OS_SUFFIX}" )
315 __LIST_FILTER( __gccExePath "bin/[.].*-gcc${TOOL_OS_SUFFIX}$" )
316 list( LENGTH __gccExePath __gccExePathsCount )
317 if( NOT __gccExePathsCount EQUAL 1 )
318 message( WARNING "Could not uniquely determine machine name for compiler from ${_root}." )
321 get_filename_component( __gccExeName "${__gccExePath}" NAME_WE )
322 string( REPLACE "-gcc" "" ${_var} "${__gccExeName}" )
324 unset( __gccExePath )
325 unset( __gccExePathsCount )
326 unset( __gccExeName )
329 macro( __COPY_IF_DIFFERENT _source _destination )
330 execute_process( COMMAND "${CMAKE_COMMAND}" -E copy_if_different "${_source}" "${_destination}" RESULT_VARIABLE __fileCopyProcess )
331 if( NOT __fileCopyProcess EQUAL 0 OR NOT EXISTS "${_destination}")
332 message( SEND_ERROR "Failed copying of ${_source} to the ${_destination}" )
334 unset( __fileCopyProcess )
338 # stl version: by default gnustl_static will be used
339 set( ANDROID_USE_STLPORT FALSE CACHE BOOL "Experimental: use stlport_static instead of gnustl_static")
340 mark_as_advanced( ANDROID_USE_STLPORT )
342 # fight against cygwin
343 set( ANDROID_FORBID_SYGWIN TRUE CACHE BOOL "Prevent cmake from working under cygwin and using cygwin tools")
344 mark_as_advanced( ANDROID_FORBID_SYGWIN )
345 if( ANDROID_FORBID_SYGWIN )
347 message( FATAL_ERROR "Android NDK and android-cmake toolchain are not welcome Cygwin. It is unlikely that this cmake toolchain will work under cygwin. But if you want to try then you can set cmake variable ANDROID_FORBID_SYGWIN to FALSE and rerun cmake." )
350 if( CMAKE_HOST_WIN32 )
351 # remove cygwin from PATH
352 set( __new_path "$ENV{PATH}")
353 __LIST_FILTER( __new_path "cygwin" )
354 set(ENV{PATH} "${__new_path}")
359 # detect current host platform
360 set( TOOL_OS_SUFFIX "" )
361 if( CMAKE_HOST_APPLE )
362 set( ANDROID_NDK_HOST_SYSTEM_NAME "darwin-x86" )
363 elseif( CMAKE_HOST_WIN32 )
364 set( ANDROID_NDK_HOST_SYSTEM_NAME "windows" )
365 set( TOOL_OS_SUFFIX ".exe" )
366 elseif( CMAKE_HOST_UNIX )
367 set( ANDROID_NDK_HOST_SYSTEM_NAME "linux-x86" )
369 message( FATAL_ERROR "Cross-compilation on your platform is not supported by this cmake toolchain" )
372 # see if we have path to Android NDK
373 __INIT_VARIABLE( ANDROID_NDK PATH ENV_ANDROID_NDK )
374 if( NOT ANDROID_NDK )
375 # see if we have path to Android standalone toolchain
376 __INIT_VARIABLE( ANDROID_STANDALONE_TOOLCHAIN PATH ENV_ANDROID_STANDALONE_TOOLCHAIN OBSOLETE_ANDROID_NDK_TOOLCHAIN_ROOT OBSOLETE_ENV_ANDROID_NDK_TOOLCHAIN_ROOT )
378 if( NOT ANDROID_STANDALONE_TOOLCHAIN )
379 #try to find Android NDK in one of the the default locations
380 set( __ndkSearchPaths )
381 foreach( __ndkSearchPath ${ANDROID_NDK_SEARCH_PATHS} )
382 foreach( suffix ${ANDROID_SUPPORTED_NDK_VERSIONS} )
383 list( APPEND __ndkSearchPaths "${__ndkSearchPath}${suffix}" )
386 __INIT_VARIABLE( ANDROID_NDK PATH VALUES ${__ndkSearchPaths} )
387 unset( __ndkSearchPaths )
390 message( STATUS "Using default path for Android NDK: ${ANDROID_NDK}" )
391 message( STATUS " If you prefer to use a different location, please define a cmake or environment variable: ANDROID_NDK" )
393 #try to find Android standalone toolchain in one of the the default locations
394 __INIT_VARIABLE( ANDROID_STANDALONE_TOOLCHAIN PATH ANDROID_STANDALONE_TOOLCHAIN_SEARCH_PATH )
396 if( ANDROID_STANDALONE_TOOLCHAIN )
397 message( STATUS "Using default path for standalone toolchain ${ANDROID_STANDALONE_TOOLCHAIN}" )
398 message( STATUS " If you prefer to use a different location, please define the variable: ANDROID_STANDALONE_TOOLCHAIN" )
399 endif( ANDROID_STANDALONE_TOOLCHAIN )
401 endif( NOT ANDROID_STANDALONE_TOOLCHAIN )
402 endif( NOT ANDROID_NDK )
404 # remember found paths
406 get_filename_component( ANDROID_NDK "${ANDROID_NDK}" ABSOLUTE )
407 # try to detect change
409 string( LENGTH "${ANDROID_NDK}" __length )
410 string( SUBSTRING "${CMAKE_AR}" 0 ${__length} __androidNdkPreviousPath )
411 if( NOT __androidNdkPreviousPath STREQUAL ANDROID_NDK )
412 message( FATAL_ERROR "It is not possible to change path to the NDK on subsequent run." )
414 unset( __androidNdkPreviousPath )
417 set( ANDROID_NDK "${ANDROID_NDK}" CACHE INTERNAL "Path of the Android NDK" )
418 set( BUILD_WITH_ANDROID_NDK True )
419 elseif( ANDROID_STANDALONE_TOOLCHAIN )
420 get_filename_component( ANDROID_STANDALONE_TOOLCHAIN "${ANDROID_STANDALONE_TOOLCHAIN}" ABSOLUTE )
421 # try to detect change
423 string( LENGTH "${ANDROID_STANDALONE_TOOLCHAIN}" __length )
424 string( SUBSTRING "${CMAKE_AR}" 0 ${__length} __androidStandaloneToolchainPreviousPath )
425 if( NOT __androidStandaloneToolchainPreviousPath STREQUAL ANDROID_STANDALONE_TOOLCHAIN )
426 message( FATAL_ERROR "It is not possible to change path to the Android standalone toolchain on subsequent run." )
428 unset( __androidStandaloneToolchainPreviousPath )
431 set( ANDROID_STANDALONE_TOOLCHAIN "${ANDROID_STANDALONE_TOOLCHAIN}" CACHE INTERNAL "Path of the Android standalone toolchain" )
432 set( BUILD_WITH_STANDALONE_TOOLCHAIN True )
434 list(GET ANDROID_NDK_SEARCH_PATHS 0 ANDROID_NDK_SEARCH_PATH)
435 message( FATAL_ERROR "Could not find neither Android NDK nor Android standalone toolcahin.
436 You should either set an environment variable:
437 export ANDROID_NDK=~/my-android-ndk
439 export ANDROID_STANDALONE_TOOLCHAIN=~/my-android-toolchain
440 or put the toolchain or NDK in the default path:
441 sudo ln -s ~/my-android-ndk ${ANDROID_NDK_SEARCH_PATH}
442 sudo ln -s ~/my-android-toolchain ${ANDROID_STANDALONE_TOOLCHAIN_SEARCH_PATH}" )
445 # get all the details about standalone toolchain
446 if( BUILD_WITH_STANDALONE_TOOLCHAIN )
447 __DETECT_NATIVE_API_LEVEL( ANDROID_SUPPORTED_NATIVE_API_LEVELS "${ANDROID_STANDALONE_TOOLCHAIN}/sysroot/usr/include/android/api-level.h" )
448 set( ANDROID_STANDALONE_TOOLCHAIN_API_LEVEL ${ANDROID_SUPPORTED_NATIVE_API_LEVELS} )
449 set( __availableToolchains "standalone" )
450 __DETECT_TOOLCHAIN_MACHINE_NAME( __availableToolchainMachines "${ANDROID_STANDALONE_TOOLCHAIN}" )
451 if( NOT __availableToolchainMachines )
452 message( FATAL_ERROR "Could not determine machine name of your toolchain. Probably your Android standalone toolchain is broken." )
454 if( __availableToolchainMachines MATCHES i686 )
455 set( __availableToolchainArchs "x86" )
456 elseif( __availableToolchainMachines MATCHES arm )
457 set( __availableToolchainArchs "arm" )
458 elseif( __availableToolchainMachines MATCHES mipsel )
459 set( __availableToolchainArchs "mipsel" )
461 if( ANDROID_COMPILER_VERSION )
462 # do not run gcc every time because it is relatevely expencive
463 set( __availableToolchainCompilerVersions "${ANDROID_COMPILER_VERSION}" )
465 execute_process( COMMAND "${ANDROID_STANDALONE_TOOLCHAIN}/bin/${__availableToolchainMachines}-gcc${TOOL_OS_SUFFIX}" --version
466 OUTPUT_VARIABLE __availableToolchainCompilerVersions OUTPUT_STRIP_TRAILING_WHITESPACE )
467 string( REGEX MATCH "[0-9]+.[0-9]+.[0-9]+" __availableToolchainCompilerVersions "${__availableToolchainCompilerVersions}" )
471 # get all the details about NDK
472 if( BUILD_WITH_ANDROID_NDK )
473 file( GLOB ANDROID_SUPPORTED_NATIVE_API_LEVELS RELATIVE "${ANDROID_NDK}/platforms" "${ANDROID_NDK}/platforms/android-*" )
474 string( REPLACE "android-" "" ANDROID_SUPPORTED_NATIVE_API_LEVELS "${ANDROID_SUPPORTED_NATIVE_API_LEVELS}" )
475 file( GLOB __availableToolchains RELATIVE "${ANDROID_NDK}/toolchains" "${ANDROID_NDK}/toolchains/*" )
476 __LIST_FILTER( __availableToolchains "^[.]" )
477 set( __availableToolchainMachines "" )
478 set( __availableToolchainArchs "" )
479 set( __availableToolchainCompilerVersions "" )
480 foreach( __toolchain ${__availableToolchains} )
481 __DETECT_TOOLCHAIN_MACHINE_NAME( __machine "${ANDROID_NDK}/toolchains/${__toolchain}/prebuilt/${ANDROID_NDK_HOST_SYSTEM_NAME}" )
483 string( REGEX MATCH "[0-9]+[.][0-9]+[.]*[0-9]*$" __version "${__toolchain}" )
484 string( REGEX MATCH "^[^-]+" __arch "${__toolchain}" )
485 list( APPEND __availableToolchainMachines "${__machine}" )
486 list( APPEND __availableToolchainArchs "${__arch}" )
487 list( APPEND __availableToolchainCompilerVersions "${__version}" )
489 list( REMOVE_ITEM __availableToolchains "${__toolchain}" )
492 if( NOT __availableToolchains )
493 message( FATAL_ERROR "Could not any working toolchain in the NDK. Probably your Android NDK is broken." )
497 # build list of available ABIs
498 if( NOT ANDROID_SUPPORTED_ABIS )
499 set( ANDROID_SUPPORTED_ABIS "" )
500 set( __uniqToolchainArchNames ${__availableToolchainArchs} )
501 list( REMOVE_DUPLICATES __uniqToolchainArchNames )
502 list( SORT __uniqToolchainArchNames )
503 foreach( __arch ${__uniqToolchainArchNames} )
504 list( APPEND ANDROID_SUPPORTED_ABIS ${ANDROID_SUPPORTED_ABIS_${__arch}} )
506 unset( __uniqToolchainArchNames )
507 if( NOT ANDROID_SUPPORTED_ABIS )
508 message( FATAL_ERROR "No one of known Android ABIs is supported by this cmake toolchain." )
513 __INIT_VARIABLE( ANDROID_ABI OBSOLETE_ARM_TARGET OBSOLETE_ARM_TARGETS VALUES ${ANDROID_SUPPORTED_ABIS} )
514 # verify that target ABI is supported
515 list( FIND ANDROID_SUPPORTED_ABIS "${ANDROID_ABI}" __androidAbiIdx )
516 if( __androidAbiIdx EQUAL -1 )
517 string( REPLACE ";" "\", \"", PRINTABLE_ANDROID_SUPPORTED_ABIS "${ANDROID_SUPPORTED_ABIS}" )
518 message( FATAL_ERROR "Specified ANDROID_ABI = \"${ANDROID_ABI}\" is not supported by this cmake toolchain or your NDK/toolchain.
519 Supported values are: \"${PRINTABLE_ANDROID_SUPPORTED_ABIS}\"
522 unset( __androidAbiIdx )
524 # remember target ABI
525 set( ANDROID_ABI "${ANDROID_ABI}" CACHE STRING "The target ABI for Android. If arm, then armeabi-v7a is recommended for hardware floating point." FORCE )
527 # set target ABI options
528 if( ANDROID_ABI STREQUAL "x86" )
530 set( ANDROID_NDK_ABI_NAME "x86" )
531 set( ANDROID_ARCH_NAME "x86" )
532 set( ANDROID_ARCH_FULLNAME "x86" )
533 set( CMAKE_SYSTEM_PROCESSOR "i686" )
534 elseif( ANDROID_ABI STREQUAL "mips" )
536 set( ANDROID_NDK_ABI_NAME "mips" )
537 set( ANDROID_ARCH_NAME "mips" )
538 set( ANDROID_ARCH_FULLNAME "mipsel" )
539 set( CMAKE_SYSTEM_PROCESSOR "mips" )
540 elseif( ANDROID_ABI STREQUAL "armeabi" )
542 set( ANDROID_NDK_ABI_NAME "armeabi" )
543 set( ANDROID_ARCH_NAME "arm" )
544 set( ANDROID_ARCH_FULLNAME "arm" )
545 set( CMAKE_SYSTEM_PROCESSOR "armv5te" )
546 elseif( ANDROID_ABI STREQUAL "armeabi-v6 with VFP" )
547 set( ARMEABI_V6 true )
548 set( ANDROID_NDK_ABI_NAME "armeabi" )
549 set( ANDROID_ARCH_NAME "arm" )
550 set( ANDROID_ARCH_FULLNAME "arm" )
551 set( CMAKE_SYSTEM_PROCESSOR "armv6" )
552 # need always fallback to older platform
554 elseif( ANDROID_ABI STREQUAL "armeabi-v7a")
555 set( ARMEABI_V7A true )
556 set( ANDROID_NDK_ABI_NAME "armeabi-v7a" )
557 set( ANDROID_ARCH_NAME "arm" )
558 set( ANDROID_ARCH_FULLNAME "arm" )
559 set( CMAKE_SYSTEM_PROCESSOR "armv7-a" )
560 elseif( ANDROID_ABI STREQUAL "armeabi-v7a with VFPV3" )
561 set( ARMEABI_V7A true )
562 set( ANDROID_NDK_ABI_NAME "armeabi-v7a" )
563 set( ANDROID_ARCH_NAME "arm" )
564 set( ANDROID_ARCH_FULLNAME "arm" )
565 set( CMAKE_SYSTEM_PROCESSOR "armv7-a" )
567 elseif( ANDROID_ABI STREQUAL "armeabi-v7a with NEON" )
568 set( ARMEABI_V7A true )
569 set( ANDROID_NDK_ABI_NAME "armeabi-v7a" )
570 set( ANDROID_ARCH_NAME "arm" )
571 set( ANDROID_ARCH_FULLNAME "arm" )
572 set( CMAKE_SYSTEM_PROCESSOR "armv7-a" )
576 message( SEND_ERROR "Unknown ANDROID_ABI=\"${ANDROID_ABI}\" is specified." )
579 if( CMAKE_BINARY_DIR AND EXISTS "${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeSystem.cmake" )
581 # it is not possible to change CMAKE_SYSTEM_PROCESSOR after the first run...
582 file( APPEND "${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeSystem.cmake" "SET(CMAKE_SYSTEM_PROCESSOR \"${CMAKE_SYSTEM_PROCESSOR}\")\n" )
585 set( ANDROID_SUPPORTED_ABIS ${ANDROID_SUPPORTED_ABIS_${ANDROID_ARCH_FULLNAME}} CACHE INTERNAL "ANDROID_ABI can be changed only to one of these ABIs. Changing to any other ABI requires to reset cmake cache." )
586 if( CMAKE_VERSION VERSION_GREATER "2.8" )
587 list( SORT ANDROID_SUPPORTED_ABIS_${ANDROID_ARCH_FULLNAME} )
588 set_property( CACHE ANDROID_ABI PROPERTY STRINGS ${ANDROID_SUPPORTED_ABIS_${ANDROID_ARCH_FULLNAME}} )
591 if( ANDROID_ARCH_NAME STREQUAL "arm" AND NOT ARMEABI_V6 )
592 __INIT_VARIABLE( ANDROID_FORCE_ARM_BUILD OBSOLETE_FORCE_ARM VALUES OFF )
593 set( ANDROID_FORCE_ARM_BUILD ${ANDROID_FORCE_ARM_BUILD} CACHE BOOL "Use 32-bit ARM instructions instead of Thumb-1" FORCE )
594 mark_as_advanced( ANDROID_FORCE_ARM_BUILD )
596 unset( ANDROID_FORCE_ARM_BUILD CACHE )
600 if( ANDROID_TOOLCHAIN_NAME )
601 list( FIND __availableToolchains "${ANDROID_TOOLCHAIN_NAME}" __toolchainIdx )
602 if( __toolchainIdx EQUAL -1 )
603 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" )
605 list( GET __availableToolchainArchs ${__toolchainIdx} __toolchainArch )
606 if( NOT __toolchainArch STREQUAL ANDROID_ARCH_FULLNAME )
607 message( SEND_ERROR "Previously selected toolchain \"${ANDROID_TOOLCHAIN_NAME}\" is not able to compile binaries for the \"${ANDROID_ARCH_NAME}\" platform." )
610 set( __toolchainIdx -1 )
611 set( __applicableToolchains "" )
612 set( __toolchainMaxVersion "0.0.0" )
613 list( LENGTH __availableToolchains __availableToolchainsCount )
614 math( EXPR __availableToolchainsCount "${__availableToolchainsCount}-1" )
615 foreach( __idx RANGE ${__availableToolchainsCount} )
616 list( GET __availableToolchainArchs ${__idx} __toolchainArch )
617 if( __toolchainArch STREQUAL ANDROID_ARCH_FULLNAME )
618 list( GET __availableToolchainCompilerVersions ${__idx} __toolchainVersion )
619 if( __toolchainVersion VERSION_GREATER __toolchainMaxVersion )
620 set( __toolchainMaxVersion "${__toolchainVersion}" )
621 set( __toolchainIdx ${__idx} )
625 unset( __availableToolchainsCount )
626 unset( __toolchainMaxVersion )
627 unset( __toolchainVersion )
629 unset( __toolchainArch )
630 if( __toolchainIdx EQUAL -1 )
631 message( FATAL_ERROR "No one of available compiler toolchains is able to compile for ${ANDROID_ARCH_NAME} platform." )
633 list( GET __availableToolchains ${__toolchainIdx} ANDROID_TOOLCHAIN_NAME )
634 list( GET __availableToolchainMachines ${__toolchainIdx} ANDROID_TOOLCHAIN_MACHINE_NAME )
635 list( GET __availableToolchainCompilerVersions ${__toolchainIdx} ANDROID_COMPILER_VERSION )
636 set( ANDROID_TOOLCHAIN_NAME "${ANDROID_TOOLCHAIN_NAME}" CACHE INTERNAL "Name of toolchain used" )
637 set( ANDROID_COMPILER_VERSION "${ANDROID_COMPILER_VERSION}" CACHE INTERNAL "compiler version from selected toolchain" )
638 unset( __toolchainIdx )
639 unset( __availableToolchains )
640 unset( __availableToolchainMachines )
641 unset( __availableToolchainArchs )
642 unset( __availableToolchainCompilerVersions )
644 # choose native API level
645 __INIT_VARIABLE( ANDROID_NATIVE_API_LEVEL ENV_ANDROID_NATIVE_API_LEVEL ANDROID_API_LEVEL ENV_ANDROID_API_LEVEL ANDROID_STANDALONE_TOOLCHAIN_API_LEVEL ANDROID_DEFAULT_NDK_API_LEVEL_${ANDROID_ARCH_NAME} ANDROID_DEFAULT_NDK_API_LEVEL )
646 string( REGEX MATCH "[0-9]+" ANDROID_NATIVE_API_LEVEL "${ANDROID_NATIVE_API_LEVEL}" )
648 list( FIND ANDROID_SUPPORTED_NATIVE_API_LEVELS "${ANDROID_NATIVE_API_LEVEL}" __levelIdx )
649 if( __levelIdx EQUAL -1 )
650 message( SEND_ERROR "Specified Android native API level (${ANDROID_NATIVE_API_LEVEL}) is not supported by your NDK/toolchain." )
653 if( BUILD_WITH_ANDROID_NDK )
654 __DETECT_NATIVE_API_LEVEL( __realApiLevel "${ANDROID_NDK}/platforms/android-${ANDROID_NATIVE_API_LEVEL}/arch-${ANDROID_ARCH_NAME}/usr/include/android/api-level.h" )
655 if( NOT __realApiLevel EQUAL ANDROID_NATIVE_API_LEVEL )
656 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." )
658 unset( __realApiLevel )
660 set( ANDROID_NATIVE_API_LEVEL "${ANDROID_NATIVE_API_LEVEL}" CACHE STRING "Android API level for native code" FORCE )
661 if( CMAKE_VERSION VERSION_GREATER "2.8" )
662 list( SORT ANDROID_SUPPORTED_NATIVE_API_LEVELS )
663 set_property( CACHE ANDROID_NATIVE_API_LEVEL PROPERTY STRINGS ${ANDROID_SUPPORTED_NATIVE_API_LEVELS} )
667 if( BUILD_WITH_STANDALONE_TOOLCHAIN )
668 set( ANDROID_TOOLCHAIN_ROOT "${ANDROID_STANDALONE_TOOLCHAIN}" )
669 set( ANDROID_SYSROOT "${ANDROID_STANDALONE_TOOLCHAIN}/sysroot" )
670 set( __stlLibPath "${ANDROID_STANDALONE_TOOLCHAIN}/${ANDROID_TOOLCHAIN_MACHINE_NAME}/lib" )
672 if( BUILD_WITH_ANDROID_NDK )
673 set( ANDROID_TOOLCHAIN_ROOT "${ANDROID_NDK}/toolchains/${ANDROID_TOOLCHAIN_NAME}/prebuilt/${ANDROID_NDK_HOST_SYSTEM_NAME}" )
674 set( ANDROID_SYSROOT "${ANDROID_NDK}/platforms/android-${ANDROID_NATIVE_API_LEVEL}/arch-${ANDROID_ARCH_NAME}" )
675 if( ANDROID_USE_STLPORT )
676 set( __stlIncludePath "${ANDROID_NDK}/sources/cxx-stl/stlport/stlport" )
677 set( __stlLibPath "${ANDROID_NDK}/sources/cxx-stl/stlport/libs/${ANDROID_NDK_ABI_NAME}" )
679 if( EXISTS "${ANDROID_NDK}/sources/cxx-stl/gnu-libstdc++/${ANDROID_COMPILER_VERSION}" )
680 set( __stlIncludePath "${ANDROID_NDK}/sources/cxx-stl/gnu-libstdc++/${ANDROID_COMPILER_VERSION}/include" )
681 set( __stlLibPath "${ANDROID_NDK}/sources/cxx-stl/gnu-libstdc++/${ANDROID_COMPILER_VERSION}/libs/${ANDROID_NDK_ABI_NAME}" )
683 set( __stlIncludePath "${ANDROID_NDK}/sources/cxx-stl/gnu-libstdc++/include" )
684 set( __stlLibPath "${ANDROID_NDK}/sources/cxx-stl/gnu-libstdc++/libs/${ANDROID_NDK_ABI_NAME}" )
689 # specify the cross compiler
690 set( CMAKE_C_COMPILER "${ANDROID_TOOLCHAIN_ROOT}/bin/${ANDROID_TOOLCHAIN_MACHINE_NAME}-gcc${TOOL_OS_SUFFIX}" CACHE PATH "gcc" )
691 set( CMAKE_CXX_COMPILER "${ANDROID_TOOLCHAIN_ROOT}/bin/${ANDROID_TOOLCHAIN_MACHINE_NAME}-g++${TOOL_OS_SUFFIX}" CACHE PATH "g++" )
692 set( CMAKE_ASM_COMPILER "${ANDROID_TOOLCHAIN_ROOT}/bin/${ANDROID_TOOLCHAIN_MACHINE_NAME}-gcc${TOOL_OS_SUFFIX}" CACHE PATH "Assembler" )
693 if( CMAKE_VERSION VERSION_LESS 2.8.5 )
694 set( CMAKE_ASM_COMPILER_ARG1 "-c" )
696 # there may be a way to make cmake deduce these TODO deduce the rest of the tools
697 set( CMAKE_STRIP "${ANDROID_TOOLCHAIN_ROOT}/bin/${ANDROID_TOOLCHAIN_MACHINE_NAME}-strip${TOOL_OS_SUFFIX}" CACHE PATH "strip" )
698 set( CMAKE_AR "${ANDROID_TOOLCHAIN_ROOT}/bin/${ANDROID_TOOLCHAIN_MACHINE_NAME}-ar${TOOL_OS_SUFFIX}" CACHE PATH "archive" )
699 set( CMAKE_LINKER "${ANDROID_TOOLCHAIN_ROOT}/bin/${ANDROID_TOOLCHAIN_MACHINE_NAME}-ld${TOOL_OS_SUFFIX}" CACHE PATH "linker" )
700 set( CMAKE_NM "${ANDROID_TOOLCHAIN_ROOT}/bin/${ANDROID_TOOLCHAIN_MACHINE_NAME}-nm${TOOL_OS_SUFFIX}" CACHE PATH "nm" )
701 set( CMAKE_OBJCOPY "${ANDROID_TOOLCHAIN_ROOT}/bin/${ANDROID_TOOLCHAIN_MACHINE_NAME}-objcopy${TOOL_OS_SUFFIX}" CACHE PATH "objcopy" )
702 set( CMAKE_OBJDUMP "${ANDROID_TOOLCHAIN_ROOT}/bin/${ANDROID_TOOLCHAIN_MACHINE_NAME}-objdump${TOOL_OS_SUFFIX}" CACHE PATH "objdump" )
703 set( CMAKE_RANLIB "${ANDROID_TOOLCHAIN_ROOT}/bin/${ANDROID_TOOLCHAIN_MACHINE_NAME}-ranlib${TOOL_OS_SUFFIX}" CACHE PATH "ranlib" )
704 set( _CMAKE_TOOLCHAIN_PREFIX "${ANDROID_TOOLCHAIN_MACHINE_NAME}-" )
706 find_program( CMAKE_INSTALL_NAME_TOOL NAMES install_name_tool )
707 if( NOT CMAKE_INSTALL_NAME_TOOL )
708 message( FATAL_ERROR "Could not find install_name_tool, please check your installation." )
710 mark_as_advanced( CMAKE_INSTALL_NAME_TOOL )
714 set( ANDROID_SYSTEM_INCLUDE_DIRS "" )
715 set( ANDROID_SYSTEM_LIB_DIRS "" )
717 # XXX: commented for apitrace
718 ## setup output directories
719 #set( LIBRARY_OUTPUT_PATH_ROOT ${CMAKE_SOURCE_DIR} CACHE PATH "root for library output, set this to change where android libs are installed to" )
720 #set( CMAKE_INSTALL_PREFIX "${ANDROID_TOOLCHAIN_ROOT}/user" CACHE STRING "path for installing" )
722 #if(NOT _CMAKE_IN_TRY_COMPILE)
723 # if( EXISTS "${CMAKE_SOURCE_DIR}/jni/CMakeLists.txt" )
724 # set( EXECUTABLE_OUTPUT_PATH "${LIBRARY_OUTPUT_PATH_ROOT}/bin/${ANDROID_NDK_ABI_NAME}" CACHE PATH "Output directory for applications" )
726 # set( EXECUTABLE_OUTPUT_PATH "${LIBRARY_OUTPUT_PATH_ROOT}/bin" CACHE PATH "Output directory for applications" )
728 # set( LIBRARY_OUTPUT_PATH "${LIBRARY_OUTPUT_PATH_ROOT}/libs/${ANDROID_NDK_ABI_NAME}" CACHE PATH "path for android libs" )
732 list( APPEND ANDROID_SYSTEM_INCLUDE_DIRS "${ANDROID_SYSROOT}/usr/include" )
733 if( __stlIncludePath AND EXISTS "${__stlIncludePath}" )
734 list( APPEND ANDROID_SYSTEM_INCLUDE_DIRS "${__stlIncludePath}" )
738 if( __stlLibPath AND EXISTS "${__stlLibPath}/include" )
739 list( APPEND ANDROID_SYSTEM_INCLUDE_DIRS "${__stlLibPath}/include" )
741 if( ANDROID_ARCH_NAME STREQUAL "arm" AND EXISTS "${ANDROID_TOOLCHAIN_ROOT}/${ANDROID_TOOLCHAIN_MACHINE_NAME}/include/c++/${ANDROID_COMPILER_VERSION}/${ANDROID_TOOLCHAIN_MACHINE_NAME}/${CMAKE_SYSTEM_PROCESSOR}/thumb/bits" )
742 list( APPEND ANDROID_SYSTEM_INCLUDE_DIRS "${ANDROID_TOOLCHAIN_ROOT}/${ANDROID_TOOLCHAIN_MACHINE_NAME}/include/c++/${ANDROID_COMPILER_VERSION}/${ANDROID_TOOLCHAIN_MACHINE_NAME}/${CMAKE_SYSTEM_PROCESSOR}/thumb" )
743 elseif( EXISTS "${ANDROID_TOOLCHAIN_ROOT}/${ANDROID_TOOLCHAIN_MACHINE_NAME}/include/c++/${ANDROID_COMPILER_VERSION}/${ANDROID_TOOLCHAIN_MACHINE_NAME}/${CMAKE_SYSTEM_PROCESSOR}/bits" )
744 list( APPEND ANDROID_SYSTEM_INCLUDE_DIRS "${ANDROID_TOOLCHAIN_ROOT}/${ANDROID_TOOLCHAIN_MACHINE_NAME}/include/c++/${ANDROID_COMPILER_VERSION}/${ANDROID_TOOLCHAIN_MACHINE_NAME}/${CMAKE_SYSTEM_PROCESSOR}" )
745 elseif( ANDROID_ARCH_NAME STREQUAL "arm" AND EXISTS "${ANDROID_TOOLCHAIN_ROOT}/${ANDROID_TOOLCHAIN_MACHINE_NAME}/include/c++/${ANDROID_COMPILER_VERSION}/${ANDROID_TOOLCHAIN_MACHINE_NAME}/thumb/bits" )
746 list( APPEND ANDROID_SYSTEM_INCLUDE_DIRS "${ANDROID_TOOLCHAIN_ROOT}/${ANDROID_TOOLCHAIN_MACHINE_NAME}/include/c++/${ANDROID_COMPILER_VERSION}/${ANDROID_TOOLCHAIN_MACHINE_NAME}/thumb" )
747 elseif( EXISTS "${ANDROID_TOOLCHAIN_ROOT}/${ANDROID_TOOLCHAIN_MACHINE_NAME}/include/c++/${ANDROID_COMPILER_VERSION}/${ANDROID_TOOLCHAIN_MACHINE_NAME}/bits" )
748 list( APPEND ANDROID_SYSTEM_INCLUDE_DIRS "${ANDROID_TOOLCHAIN_ROOT}/${ANDROID_TOOLCHAIN_MACHINE_NAME}/include/c++/${ANDROID_COMPILER_VERSION}/${ANDROID_TOOLCHAIN_MACHINE_NAME}" )
751 # flags and definitions
752 if(ANDROID_SYSROOT MATCHES "[ ;\"]")
753 set( ANDROID_CXX_FLAGS "--sysroot=\"${ANDROID_SYSROOT}\"" )
754 # quotes will break try_compile and compiler identification
755 message(WARNING "Your Android system root has non-alphanumeric symbols. It can break compiler features detection and the whole build.")
757 set( ANDROID_CXX_FLAGS "--sysroot=${ANDROID_SYSROOT}" )
760 remove_definitions( -DANDROID )
761 add_definitions( -DANDROID )
763 # Force set compilers because standard identification works badly for us
764 include( CMakeForceCompiler )
765 CMAKE_FORCE_C_COMPILER( "${CMAKE_C_COMPILER}" GNU )
766 set( CMAKE_C_PLATFORM_ID Linux )
767 set( CMAKE_C_SIZEOF_DATA_PTR 4 )
768 set( CMAKE_C_HAS_ISYSROOT 1 )
769 set( CMAKE_C_COMPILER_ABI ELF )
770 CMAKE_FORCE_CXX_COMPILER( "${CMAKE_CXX_COMPILER}" GNU )
771 set( CMAKE_CXX_PLATFORM_ID Linux )
772 set( CMAKE_CXX_SIZEOF_DATA_PTR 4 )
773 set( CMAKE_CXX_HAS_ISYSROOT 1 )
774 set( CMAKE_CXX_COMPILER_ABI ELF )
775 # force ASM compiler (required for CMake < 2.8.5)
776 set( CMAKE_ASM_COMPILER_ID_RUN TRUE )
777 set( CMAKE_ASM_COMPILER_ID GNU )
778 set( CMAKE_ASM_COMPILER_WORKS TRUE )
779 set( CMAKE_ASM_COMPILER_FORCED TRUE )
780 set( CMAKE_COMPILER_IS_GNUASM 1)
783 if( ARMEABI OR ARMEABI_V7A )
784 # NDK also defines -ffunction-sections -funwind-tables but they result in worse OpenCV performance
785 set( _CMAKE_CXX_FLAGS "-fPIC -Wno-psabi" )
786 set( _CMAKE_C_FLAGS "-fPIC -Wno-psabi" )
787 remove_definitions( -D__ARM_ARCH_5__ -D__ARM_ARCH_5T__ -D__ARM_ARCH_5E__ -D__ARM_ARCH_5TE__ )
788 add_definitions( -D__ARM_ARCH_5__ -D__ARM_ARCH_5T__ -D__ARM_ARCH_5E__ -D__ARM_ARCH_5TE__ )
789 # extra arm-specific flags
790 set( ANDROID_CXX_FLAGS "${ANDROID_CXX_FLAGS} -fsigned-char" )
792 set( _CMAKE_CXX_FLAGS "-funwind-tables" )
793 set( _CMAKE_C_FLAGS "-funwind-tables" )
795 set( _CMAKE_CXX_FLAGS "-fpic -Wno-psabi -fno-strict-aliasing -finline-functions -ffunction-sections -funwind-tables -fmessage-length=0 -fno-inline-functions-called-once -fgcse-after-reload -frerun-cse-after-loop -frename-registers" )
796 set( _CMAKE_CXX_FLAGS "-fpic -Wno-psabi -fno-strict-aliasing -finline-functions -ffunction-sections -funwind-tables -fmessage-length=0 -fno-inline-functions-called-once -fgcse-after-reload -frerun-cse-after-loop -frename-registers" )
797 set( ANDROID_CXX_FLAGS "${ANDROID_CXX_FLAGS} -fsigned-char" )
799 set( _CMAKE_CXX_FLAGS "" )
800 set( _CMAKE_C_FLAGS "" )
803 if( ANDROID_USE_STLPORT )
804 set( _CMAKE_CXX_FLAGS "${_CMAKE_CXX_FLAGS} -fno-rtti -fno-exceptions" )
805 set( _CMAKE_C_FLAGS "${_CMAKE_C_FLAGS} -fno-exceptions" )
807 set( _CMAKE_CXX_FLAGS "${_CMAKE_CXX_FLAGS} -frtti -fexceptions" )
808 set( _CMAKE_C_FLAGS "${_CMAKE_C_FLAGS} -fexceptions" )
811 # release and debug flags
812 if( ARMEABI OR ARMEABI_V7A )
813 if( NOT ANDROID_FORCE_ARM_BUILD AND NOT ARMEABI_V6 )
814 # It is recommended to use the -mthumb compiler flag to force the generation
815 # of 16-bit Thumb-1 instructions (the default being 32-bit ARM ones).
816 # O3 instead of O2/Os in release mode - like cmake sets for desktop gcc
817 set( _CMAKE_CXX_FLAGS_RELEASE "-mthumb -O3" )
818 set( _CMAKE_C_FLAGS_RELEASE "-mthumb -O3" )
819 set( _CMAKE_CXX_FLAGS_DEBUG "-marm -Os -finline-limit=64" )
820 set( _CMAKE_C_FLAGS_DEBUG "-marm -Os -finline-limit=64" )
822 # always compile ARMEABI_V6 in arm mode; otherwise there is no difference from ARMEABI
823 # O3 instead of O2/Os in release mode - like cmake sets for desktop gcc
824 set( _CMAKE_CXX_FLAGS_RELEASE "-marm -O3 -fstrict-aliasing" )
825 set( _CMAKE_C_FLAGS_RELEASE "-marm -O3 -fstrict-aliasing" )
826 set( _CMAKE_CXX_FLAGS_DEBUG "-marm -O0 -finline-limit=300" )
827 set( _CMAKE_C_FLAGS_DEBUG "-marm -O0 -finline-limit=300" )
830 set( _CMAKE_CXX_FLAGS_RELEASE "-O3 -fstrict-aliasing" )
831 set( _CMAKE_C_FLAGS_RELEASE "-O3 -fstrict-aliasing" )
832 set( _CMAKE_CXX_FLAGS_DEBUG "-O0 -finline-limit=300" )
833 set( _CMAKE_C_FLAGS_DEBUG "-O0 -finline-limit=300" )
835 set( _CMAKE_CXX_FLAGS_RELEASE "-O3 -funswitch-loops -finline-limit=300" )
836 set( _CMAKE_C_FLAGS_RELEASE "-O3 -funswitch-loops -finline-limit=300" )
837 set( _CMAKE_CXX_FLAGS_DEBUG "-O0 -g" )
838 set( _CMAKE_C_FLAGS_DEBUG "-O0 -g" )
840 set( _CMAKE_CXX_FLAGS_RELEASE "${_CMAKE_CXX_FLAGS_RELEASE} -fomit-frame-pointer -DNDEBUG" )
841 set( _CMAKE_C_FLAGS_RELEASE "${_CMAKE_C_FLAGS_RELEASE} -fomit-frame-pointer -DNDEBUG" )
842 set( _CMAKE_CXX_FLAGS_DEBUG "${_CMAKE_CXX_FLAGS_DEBUG} -fno-strict-aliasing -fno-omit-frame-pointer -DDEBUG -D_DEBUG" )
843 set( _CMAKE_C_FLAGS_DEBUG "${_CMAKE_C_FLAGS_DEBUG} -fno-strict-aliasing -fno-omit-frame-pointer -DDEBUG -D_DEBUG" )
847 set( ANDROID_CXX_FLAGS "${ANDROID_CXX_FLAGS} -march=armv7-a -mfloat-abi=softfp" )
849 set( ANDROID_CXX_FLAGS "${ANDROID_CXX_FLAGS} -mfpu=neon" )
851 set( ANDROID_CXX_FLAGS "${ANDROID_CXX_FLAGS} -mfpu=vfpv3" )
853 set( ANDROID_CXX_FLAGS "${ANDROID_CXX_FLAGS} -mfpu=vfp" )
856 set( ANDROID_CXX_FLAGS "${ANDROID_CXX_FLAGS} -march=armv6 -mfloat-abi=softfp -mfpu=vfp" )
858 set( ANDROID_CXX_FLAGS "${ANDROID_CXX_FLAGS} -march=armv5te -mtune=xscale -msoft-float" )
860 set( ANDROID_CXX_FLAGS "${ANDROID_CXX_FLAGS}" )#sse?
864 if( NOT DEFINED __ndklibspath )
865 set( __ndklibspath "${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/ndklibs/${ANDROID_NDK_ABI_NAME}" )
867 list( APPEND ANDROID_SYSTEM_LIB_DIRS "${CMAKE_INSTALL_PREFIX}/libs/${ANDROID_NDK_ABI_NAME}" )
868 set( ANDROID_LINKER_FLAGS "" )
871 if( ANDROID_USE_STLPORT )
872 if( EXISTS "${__stlLibPath}/libstlport_static.a" )
873 set( CMAKE_CXX_CREATE_SHARED_LIBRARY "<CMAKE_CXX_COMPILER> <CMAKE_SHARED_LIBRARY_CXX_FLAGS> <LANGUAGE_COMPILE_FLAGS> <LINK_FLAGS> <CMAKE_SHARED_LIBRARY_CREATE_CXX_FLAGS> <SONAME_FLAG><TARGET_SONAME> -o <TARGET> <OBJECTS> <LINK_LIBRARIES> \"${__stlLibPath}/libstlport_static.a\"")
874 set( CMAKE_CXX_CREATE_SHARED_MODULE "<CMAKE_CXX_COMPILER> <CMAKE_SHARED_LIBRARY_CXX_FLAGS> <LANGUAGE_COMPILE_FLAGS> <LINK_FLAGS> <CMAKE_SHARED_LIBRARY_CREATE_CXX_FLAGS> <SONAME_FLAG><TARGET_SONAME> -o <TARGET> <OBJECTS> <LINK_LIBRARIES> \"${__stlLibPath}/libstlport_static.a\"")
876 else( ANDROID_USE_STLPORT )
877 if( EXISTS "${__stlLibPath}/libgnustl_static.a" )
878 __COPY_IF_DIFFERENT( "${__stlLibPath}/libgnustl_static.a" "${__ndklibspath}/libstdc++.a" )
879 elseif( ANDROID_ARCH_NAME STREQUAL "arm" AND EXISTS "${__stlLibPath}/${CMAKE_SYSTEM_PROCESSOR}/thumb/libstdc++.a" )
880 __COPY_IF_DIFFERENT( "${__stlLibPath}/${CMAKE_SYSTEM_PROCESSOR}/thumb/libstdc++.a" "${__ndklibspath}/libstdc++.a" )
881 elseif( ANDROID_ARCH_NAME STREQUAL "arm" AND EXISTS "${__stlLibPath}/${CMAKE_SYSTEM_PROCESSOR}/libstdc++.a" )
882 __COPY_IF_DIFFERENT( "${__stlLibPath}/${CMAKE_SYSTEM_PROCESSOR}/libstdc++.a" "${__ndklibspath}/libstdc++.a" )
883 elseif( ANDROID_ARCH_NAME STREQUAL "arm" AND EXISTS "${__stlLibPath}/thumb/libstdc++.a" )
884 __COPY_IF_DIFFERENT( "${__stlLibPath}/thumb/libstdc++.a" "${__ndklibspath}/libstdc++.a" )
885 elseif( EXISTS "${__stlLibPath}/libstdc++.a" )
886 __COPY_IF_DIFFERENT( "${__stlLibPath}/libstdc++.a" "${__ndklibspath}/libstdc++.a" )
888 if( EXISTS "${__stlLibPath}/libsupc++.a" )
889 __COPY_IF_DIFFERENT( "${__stlLibPath}/libsupc++.a" "${__ndklibspath}/libsupc++.a" )
890 elseif( ANDROID_ARCH_NAME STREQUAL "arm" AND EXISTS "${ANDROID_TOOLCHAIN_ROOT}/${ANDROID_TOOLCHAIN_MACHINE_NAME}/lib/${CMAKE_SYSTEM_PROCESSOR}/thumb/libsupc++.a" )
891 __COPY_IF_DIFFERENT( "${ANDROID_TOOLCHAIN_ROOT}/${ANDROID_TOOLCHAIN_MACHINE_NAME}/lib/${CMAKE_SYSTEM_PROCESSOR}/thumb/libsupc++.a" "${__ndklibspath}/libsupc++.a" )
892 elseif( ANDROID_ARCH_NAME STREQUAL "arm" AND EXISTS "${ANDROID_TOOLCHAIN_ROOT}/${ANDROID_TOOLCHAIN_MACHINE_NAME}/lib/${CMAKE_SYSTEM_PROCESSOR}/libsupc++.a" )
893 __COPY_IF_DIFFERENT( "${ANDROID_TOOLCHAIN_ROOT}/${ANDROID_TOOLCHAIN_MACHINE_NAME}/lib/${CMAKE_SYSTEM_PROCESSOR}/libsupc++.a" "${__ndklibspath}/libsupc++.a" )
894 elseif( ANDROID_ARCH_NAME STREQUAL "arm" AND EXISTS "${ANDROID_TOOLCHAIN_ROOT}/${ANDROID_TOOLCHAIN_MACHINE_NAME}/lib/thumb/libsupc++.a" )
895 __COPY_IF_DIFFERENT( "${ANDROID_TOOLCHAIN_ROOT}/${ANDROID_TOOLCHAIN_MACHINE_NAME}/lib/thumb/libsupc++.a" "${__ndklibspath}/libsupc++.a" )
896 elseif( EXISTS "${ANDROID_TOOLCHAIN_ROOT}/${ANDROID_TOOLCHAIN_MACHINE_NAME}/lib/libsupc++.a" )
897 __COPY_IF_DIFFERENT( "${ANDROID_TOOLCHAIN_ROOT}/${ANDROID_TOOLCHAIN_MACHINE_NAME}/lib/libsupc++.a" "${__ndklibspath}/libsupc++.a" )
899 list( APPEND ANDROID_SYSTEM_LIB_DIRS "${__ndklibspath}" )
900 endif( ANDROID_USE_STLPORT )
902 # cleanup for STL search
903 unset( __stlIncludePath )
904 unset( __stlLibPath )
907 __INIT_VARIABLE( ANDROID_NO_UNDEFINED OBSOLETE_NO_UNDEFINED VALUES ON )
908 set( ANDROID_NO_UNDEFINED ${ANDROID_NO_UNDEFINED} CACHE BOOL "Show all undefined symbols as linker errors" FORCE )
909 mark_as_advanced( ANDROID_NO_UNDEFINED )
910 if( ANDROID_NO_UNDEFINED )
911 set( ANDROID_LINKER_FLAGS "-Wl,--no-undefined ${ANDROID_LINKER_FLAGS}" )
914 if (ANDROID_NDK MATCHES "-r[56].?$")
915 # 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.
916 __INIT_VARIABLE( ANDROID_SO_UNDEFINED VALUES ON )
918 __INIT_VARIABLE( ANDROID_SO_UNDEFINED VALUES OFF )
921 set( ANDROID_SO_UNDEFINED ${ANDROID_SO_UNDEFINED} CACHE BOOL "Allows or disallows undefined symbols in shared libraries" FORCE )
922 mark_as_advanced( ANDROID_SO_UNDEFINED )
923 if( ANDROID_SO_UNDEFINED )
924 set( ANDROID_LINKER_FLAGS "${ANDROID_LINKER_FLAGS} -Wl,-allow-shlib-undefined" )
927 __INIT_VARIABLE( ANDROID_FUNCTION_LEVEL_LINKING VALUES ON )
928 set( ANDROID_FUNCTION_LEVEL_LINKING ON CACHE BOOL "Allows or disallows undefined symbols in shared libraries" FORCE )
929 mark_as_advanced( ANDROID_FUNCTION_LEVEL_LINKING )
930 if( ANDROID_FUNCTION_LEVEL_LINKING )
931 set( ANDROID_CXX_FLAGS "${ANDROID_CXX_FLAGS} -fdata-sections -ffunction-sections" )
932 set( ANDROID_LINKER_FLAGS "-Wl,--gc-sections ${ANDROID_LINKER_FLAGS}" )
936 # this is *required* to use the following linker flags that routes around
937 # a CPU bug in some Cortex-A8 implementations:
938 set( ANDROID_LINKER_FLAGS "-Wl,--fix-cortex-a8 ${ANDROID_LINKER_FLAGS}" )
942 set( CMAKE_CXX_FLAGS "${_CMAKE_CXX_FLAGS}" CACHE STRING "c++ flags" )
943 set( CMAKE_C_FLAGS "${_CMAKE_C_FLAGS}" CACHE STRING "c flags" )
944 set( CMAKE_CXX_FLAGS_RELEASE "${_CMAKE_CXX_FLAGS_RELEASE}" CACHE STRING "c++ Release flags" )
945 set( CMAKE_C_FLAGS_RELEASE "${_CMAKE_C_FLAGS_RELEASE}" CACHE STRING "c Release flags" )
946 set( CMAKE_CXX_FLAGS_DEBUG "${_CMAKE_CXX_FLAGS_DEBUG}" CACHE STRING "c++ Debug flags" )
947 set( CMAKE_C_FLAGS_DEBUG "${_CMAKE_C_FLAGS_DEBUG}" CACHE STRING "c Debug flags" )
948 set( CMAKE_SHARED_LINKER_FLAGS "" CACHE STRING "linker flags" )
949 set( CMAKE_MODULE_LINKER_FLAGS "" CACHE STRING "linker flags" )
950 set( CMAKE_EXE_LINKER_FLAGS "-Wl,-z,nocopyreloc" CACHE STRING "linker flags" )
952 include_directories( SYSTEM ${ANDROID_SYSTEM_INCLUDE_DIRS} )
953 link_directories( ${ANDROID_SYSTEM_LIB_DIRS} )
956 set( ANDROID_CXX_FLAGS "${ANDROID_CXX_FLAGS}" CACHE INTERNAL "Extra Android compiler flags")
957 set( ANDROID_LINKER_FLAGS "${ANDROID_LINKER_FLAGS}" CACHE INTERNAL "Extra Android linker flags")
958 set( CMAKE_CXX_FLAGS "${ANDROID_CXX_FLAGS} ${CMAKE_CXX_FLAGS}" )
959 set( CMAKE_C_FLAGS "${ANDROID_CXX_FLAGS} ${CMAKE_C_FLAGS}" )
960 if( MIPS AND BUILD_WITH_ANDROID_NDK )
961 set( CMAKE_SHARED_LINKER_FLAGS "-Wl,-T,${ANDROID_NDK}/toolchains/${ANDROID_TOOLCHAIN_NAME}/mipself.xsc ${ANDROID_LINKER_FLAGS} ${CMAKE_SHARED_LINKER_FLAGS}" )
962 set( CMAKE_MODULE_LINKER_FLAGS "-Wl,-T,${ANDROID_NDK}/toolchains/${ANDROID_TOOLCHAIN_NAME}/mipself.xsc ${ANDROID_LINKER_FLAGS} ${CMAKE_MODULE_LINKER_FLAGS}" )
963 set( CMAKE_EXE_LINKER_FLAGS "-Wl,-T,${ANDROID_NDK}/toolchains/${ANDROID_TOOLCHAIN_NAME}/mipself.x ${ANDROID_LINKER_FLAGS} ${CMAKE_EXE_LINKER_FLAGS}" )
965 set( CMAKE_SHARED_LINKER_FLAGS "${ANDROID_LINKER_FLAGS} ${CMAKE_SHARED_LINKER_FLAGS}" )
966 set( CMAKE_MODULE_LINKER_FLAGS "${ANDROID_LINKER_FLAGS} ${CMAKE_MODULE_LINKER_FLAGS}" )
967 set( CMAKE_EXE_LINKER_FLAGS "${ANDROID_LINKER_FLAGS} ${CMAKE_EXE_LINKER_FLAGS}" )
970 # set these global flags for cmake client scripts to change behavior
972 set( BUILD_ANDROID True )
974 # where is the target environment
975 set( CMAKE_FIND_ROOT_PATH "${ANDROID_TOOLCHAIN_ROOT}/bin" "${ANDROID_TOOLCHAIN_ROOT}/${ANDROID_TOOLCHAIN_MACHINE_NAME}" "${ANDROID_SYSROOT}" "${CMAKE_INSTALL_PREFIX}" "${CMAKE_INSTALL_PREFIX}/share" )
977 # only search for libraries and includes in the ndk toolchain
978 set( CMAKE_FIND_ROOT_PATH_MODE_PROGRAM ONLY )
979 set( CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY )
980 set( CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY )
983 # macro to find packages on the host OS
984 macro( find_host_package )
985 set( CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER )
986 set( CMAKE_FIND_ROOT_PATH_MODE_LIBRARY NEVER )
987 set( CMAKE_FIND_ROOT_PATH_MODE_INCLUDE NEVER )
988 if( CMAKE_HOST_WIN32 )
991 elseif( CMAKE_HOST_APPLE )
995 find_package( ${ARGN} )
999 set( CMAKE_FIND_ROOT_PATH_MODE_PROGRAM ONLY )
1000 set( CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY )
1001 set( CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY )
1005 # macro to find programs on the host OS
1006 macro( find_host_program )
1007 set( CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER )
1008 set( CMAKE_FIND_ROOT_PATH_MODE_LIBRARY NEVER )
1009 set( CMAKE_FIND_ROOT_PATH_MODE_INCLUDE NEVER )
1010 if( CMAKE_HOST_WIN32 )
1013 elseif( CMAKE_HOST_APPLE )
1017 find_program( ${ARGN} )
1021 set( CMAKE_FIND_ROOT_PATH_MODE_PROGRAM ONLY )
1022 set( CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY )
1023 set( CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY )
1027 macro( ANDROID_GET_ABI_RAWNAME TOOLCHAIN_FLAG VAR )
1028 if( "${TOOLCHAIN_FLAG}" STREQUAL "ARMEABI" )
1029 set( ${VAR} "armeabi" )
1030 elseif( "${TOOLCHAIN_FLAG}" STREQUAL "ARMEABI_V7A" )
1031 set( ${VAR} "armeabi-v7a" )
1032 elseif( "${TOOLCHAIN_FLAG}" STREQUAL "X86" )
1035 set( ${VAR} "unknown" )
1040 # export toolchain settings for the try_compile() command
1041 if( NOT PROJECT_NAME STREQUAL "CMAKE_TRY_COMPILE" )
1042 set( __toolchain_config "")
1043 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 ANDROID_FUNCTION_LEVEL_LINKING __ndklibspath )
1044 if( DEFINED ${__var} )
1045 if( "${__var}" MATCHES " ")
1046 set( __toolchain_config "${__toolchain_config}set( ${__var} \"${${__var}}\" CACHE INTERNAL \"\" )\n" )
1048 set( __toolchain_config "${__toolchain_config}set( ${__var} ${${__var}} CACHE INTERNAL \"\" )\n" )
1052 file( WRITE "${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/android.toolchain.config.cmake" "${__toolchain_config}" )
1053 unset( __toolchain_config )
1054 unset( __ndklibspath )
1058 # set some obsolete variables for backward compatibility
1059 set( ANDROID_SET_OBSOLETE_VARIABLES ON CACHE BOOL "Define obsolete Andrid-specific cmake variables" )
1060 mark_as_advanced( ANDROID_SET_OBSOLETE_VARIABLES )
1061 if( ANDROID_SET_OBSOLETE_VARIABLES )
1062 set( ANDROID_API_LEVEL ${ANDROID_NATIVE_API_LEVEL} )
1063 set( ARM_TARGET "${ANDROID_ABI}" )
1064 set( ARMEABI_NDK_NAME "${ANDROID_NDK_ABI_NAME}" )
1068 # Variables controlling behavior or set by cmake toolchain:
1069 # ANDROID_ABI : "armeabi-v7a" (default), "armeabi", "armeabi-v7a with NEON", "armeabi-v7a with VFPV3", "armeabi-v6 with VFP", "x86", "mips"
1070 # ANDROID_NATIVE_API_LEVEL : 3,4,5,8,9,14 (depends on NDK version)
1071 # ANDROID_SET_OBSOLETE_VARIABLES : ON/OFF
1072 # ANDROID_USE_STLPORT : OFF/ON - EXPERIMENTAL!!!
1073 # ANDROID_FORBID_SYGWIN : ON/OFF
1074 # ANDROID_NO_UNDEFINED : ON/OFF
1075 # ANDROID_SO_UNDEFINED : OFF/ON (default depends on NDK version)
1076 # ANDROID_FUNCTION_LEVEL_LINKING : ON/OFF
1077 # Variables that takes effect only at first run:
1078 # ANDROID_FORCE_ARM_BUILD : ON/OFF
1079 # LIBRARY_OUTPUT_PATH_ROOT : <any valid path>
1080 # Can be set only at the first run:
1082 # ANDROID_STANDALONE_TOOLCHAIN
1083 # ANDROID_TOOLCHAIN_NAME : "arm-linux-androideabi-4.4.3" or "arm-linux-androideabi-4.6" or "mipsel-linux-android-4.4.3" or "mipsel-linux-android-4.6" or "x86-4.4.3" or "x86-4.6"
1085 # ANDROID_API_LEVEL : superseded by ANDROID_NATIVE_API_LEVEL
1086 # ARM_TARGET : superseded by ANDROID_ABI
1087 # ARM_TARGETS : superseded by ANDROID_ABI (can be set only)
1088 # ANDROID_NDK_TOOLCHAIN_ROOT : superseded by ANDROID_STANDALONE_TOOLCHAIN (can be set only)
1089 # ANDROID_LEVEL : superseded by ANDROID_NATIVE_API_LEVEL (completely removed)
1091 # Primary read-only variables:
1092 # ANDROID : always TRUE
1093 # ARMEABI : TRUE for arm v6 and older devices
1094 # ARMEABI_V6 : TRUE for arm v6
1095 # ARMEABI_V7A : TRUE for arm v7a
1096 # NEON : TRUE if NEON unit is enabled
1097 # VFPV3 : TRUE if VFP version 3 is enabled
1098 # X86 : TRUE if configured for x86
1099 # BUILD_ANDROID : always TRUE
1100 # BUILD_WITH_ANDROID_NDK : TRUE if NDK is used
1101 # BUILD_WITH_STANDALONE_TOOLCHAIN : TRUE if standalone toolchain is used
1102 # ANDROID_NDK_HOST_SYSTEM_NAME : "windows", "linux-x86" or "darwin-x86" depending on host platform
1103 # ANDROID_NDK_ABI_NAME : "armeabi", "armeabi-v7a" or "x86" depending on ANDROID_ABI
1104 # ANDROID_ARCH_NAME : "arm" or "x86" or "mips" depending on ANDROID_ABI
1105 # TOOL_OS_SUFFIX : "" or ".exe" depending on host platform
1106 # ANDROID_SYSROOT : path to the compiler sysroot
1107 # ANDROID_SYSTEM_INCLUDE_DIRS
1108 # ANDROID_SYSTEM_LIB_DIRS
1110 # ARMEABI_NDK_NAME : superseded by ANDROID_NDK_ABI_NAME
1112 # Secondary (less stable) read-only variables:
1113 # ANDROID_COMPILER_VERSION : GCC version used
1114 # ANDROID_CXX_FLAGS : C/C++ compiler flags required by Android platform
1115 # ANDROID_SUPPORTED_ABIS : list of currently allowed values for ANDROID_ABI
1116 # ANDROID_TOOLCHAIN_MACHINE_NAME : "arm-linux-androideabi", "arm-eabi" or "i686-android-linux"
1117 # ANDROID_TOOLCHAIN_ROOT : path to the top level of toolchain (standalone or placed inside NDK)
1118 # ANDROID_SUPPORTED_NATIVE_API_LEVELS : list of native API levels found inside NDK
1121 # ANDROID_DEFAULT_NDK_API_LEVEL
1122 # ANDROID_DEFAULT_NDK_API_LEVEL_${ARCH}
1123 # ANDROID_NDK_SEARCH_PATHS
1124 # ANDROID_STANDALONE_TOOLCHAIN_SEARCH_PATH
1125 # ANDROID_SUPPORTED_ABIS_${ARCH}
1126 # ANDROID_SUPPORTED_NDK_VERSIONS