Open Source Computer Vision Library https://opencv.org/
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#!/usr/bin/env python
import os, sys
import argparse
import glob
import re
import shutil
import subprocess
import time
import logging as log
import xml.etree.ElementTree as ET
SCRIPT_DIR = os.path.dirname(os.path.abspath(__file__))
class Fail(Exception):
def __init__(self, text=None):
self.t = text
def __str__(self):
return "ERROR" if self.t is None else self.t
def execute(cmd, shell=False):
try:
log.debug("Executing: %s" % cmd)
log.info('Executing: ' + ' '.join(cmd))
retcode = subprocess.call(cmd, shell=shell)
if retcode < 0:
raise Fail("Child was terminated by signal: %s" % -retcode)
elif retcode > 0:
raise Fail("Child returned: %s" % retcode)
except OSError as e:
raise Fail("Execution failed: %d / %s" % (e.errno, e.strerror))
def rm_one(d):
d = os.path.abspath(d)
if os.path.exists(d):
if os.path.isdir(d):
log.info("Removing dir: %s", d)
shutil.rmtree(d)
elif os.path.isfile(d):
log.info("Removing file: %s", d)
os.remove(d)
def check_dir(d, create=False, clean=False):
d = os.path.abspath(d)
log.info("Check dir %s (create: %s, clean: %s)", d, create, clean)
if os.path.exists(d):
if not os.path.isdir(d):
raise Fail("Not a directory: %s" % d)
if clean:
for x in glob.glob(os.path.join(d, "*")):
rm_one(x)
else:
if create:
os.makedirs(d)
return d
def check_executable(cmd):
try:
log.debug("Executing: %s" % cmd)
result = subprocess.check_output(cmd, stderr=subprocess.STDOUT)
if not isinstance(result, str):
result = result.decode("utf-8")
log.debug("Result: %s" % (result+'\n').split('\n')[0])
return True
except Exception as e:
log.debug('Failed: %s' % e)
return False
def determine_opencv_version(version_hpp_path):
# version in 2.4 - CV_VERSION_EPOCH.CV_VERSION_MAJOR.CV_VERSION_MINOR.CV_VERSION_REVISION
# version in master - CV_VERSION_MAJOR.CV_VERSION_MINOR.CV_VERSION_REVISION-CV_VERSION_STATUS
with open(version_hpp_path, "rt") as f:
data = f.read()
major = re.search(r'^#define\W+CV_VERSION_MAJOR\W+(\d+)$', data, re.MULTILINE).group(1)
minor = re.search(r'^#define\W+CV_VERSION_MINOR\W+(\d+)$', data, re.MULTILINE).group(1)
revision = re.search(r'^#define\W+CV_VERSION_REVISION\W+(\d+)$', data, re.MULTILINE).group(1)
version_status = re.search(r'^#define\W+CV_VERSION_STATUS\W+"([^"]*)"$', data, re.MULTILINE).group(1)
return "%(major)s.%(minor)s.%(revision)s%(version_status)s" % locals()
# shutil.move fails if dst exists
def move_smart(src, dst):
def move_recurse(subdir):
s = os.path.join(src, subdir)
d = os.path.join(dst, subdir)
if os.path.exists(d):
if os.path.isdir(d):
for item in os.listdir(s):
move_recurse(os.path.join(subdir, item))
elif os.path.isfile(s):
shutil.move(s, d)
else:
shutil.move(s, d)
move_recurse('')
# shutil.copytree fails if dst exists
def copytree_smart(src, dst):
def copy_recurse(subdir):
s = os.path.join(src, subdir)
d = os.path.join(dst, subdir)
if os.path.exists(d):
if os.path.isdir(d):
for item in os.listdir(s):
copy_recurse(os.path.join(subdir, item))
elif os.path.isfile(s):
shutil.copy2(s, d)
else:
if os.path.isdir(s):
shutil.copytree(s, d)
elif os.path.isfile(s):
shutil.copy2(s, d)
copy_recurse('')
def get_highest_version(subdirs):
return max(subdirs, key=lambda dir: [int(comp) for comp in os.path.split(dir)[-1].split('.')])
#===================================================================================================
class ABI:
def __init__(self, platform_id, name, toolchain, ndk_api_level = None, cmake_vars = dict()):
self.platform_id = platform_id # platform code to add to apk version (for cmake)
self.name = name # general name (official Android ABI identifier)
self.toolchain = toolchain # toolchain identifier (for cmake)
self.cmake_vars = dict(
ANDROID_STL="gnustl_static",
ANDROID_ABI=self.name,
ANDROID_PLATFORM_ID=platform_id,
)
if toolchain is not None:
self.cmake_vars['ANDROID_TOOLCHAIN_NAME'] = toolchain
else:
self.cmake_vars['ANDROID_TOOLCHAIN'] = 'clang'
self.cmake_vars['ANDROID_STL'] = 'c++_shared'
if ndk_api_level:
self.cmake_vars['ANDROID_NATIVE_API_LEVEL'] = ndk_api_level
self.cmake_vars.update(cmake_vars)
def __str__(self):
return "%s (%s)" % (self.name, self.toolchain)
def haveIPP(self):
return self.name == "x86" or self.name == "x86_64"
#===================================================================================================
class Builder:
def __init__(self, workdir, opencvdir, config):
self.workdir = check_dir(workdir, create=True)
self.opencvdir = check_dir(opencvdir)
self.config = config
self.libdest = check_dir(os.path.join(self.workdir, "o4a"), create=True, clean=True)
self.resultdest = check_dir(os.path.join(self.workdir, 'OpenCV-android-sdk'), create=True, clean=True)
self.docdest = check_dir(os.path.join(self.workdir, 'OpenCV-android-sdk', 'sdk', 'java', 'javadoc'), create=True, clean=True)
self.extra_packs = []
self.opencv_version = determine_opencv_version(os.path.join(self.opencvdir, "modules", "core", "include", "opencv2", "core", "version.hpp"))
self.use_ccache = False if config.no_ccache else True
self.cmake_path = self.get_cmake()
self.ninja_path = self.get_ninja()
self.debug = True if config.debug else False
self.debug_info = True if config.debug_info else False
self.no_samples_build = True if config.no_samples_build else False
self.opencl = True if config.opencl else False
def get_cmake(self):
if not self.config.use_android_buildtools and check_executable(['cmake', '--version']):
log.info("Using cmake from PATH")
return 'cmake'
# look to see if Android SDK's cmake is installed
android_cmake = os.path.join(os.environ['ANDROID_SDK'], 'cmake')
if os.path.exists(android_cmake):
cmake_subdirs = [f for f in os.listdir(android_cmake) if check_executable([os.path.join(android_cmake, f, 'bin', 'cmake'), '--version'])]
if len(cmake_subdirs) > 0:
# there could be more than one - get the most recent
cmake_from_sdk = os.path.join(android_cmake, get_highest_version(cmake_subdirs), 'bin', 'cmake')
log.info("Using cmake from Android SDK: %s", cmake_from_sdk)
return cmake_from_sdk
raise Fail("Can't find cmake")
def get_ninja(self):
if not self.config.use_android_buildtools and check_executable(['ninja', '--version']):
log.info("Using ninja from PATH")
return 'ninja'
# Android SDK's cmake includes a copy of ninja - look to see if its there
android_cmake = os.path.join(os.environ['ANDROID_SDK'], 'cmake')
if os.path.exists(android_cmake):
cmake_subdirs = [f for f in os.listdir(android_cmake) if check_executable([os.path.join(android_cmake, f, 'bin', 'ninja'), '--version'])]
if len(cmake_subdirs) > 0:
# there could be more than one - just take the first one
ninja_from_sdk = os.path.join(android_cmake, cmake_subdirs[0], 'bin', 'ninja')
log.info("Using ninja from Android SDK: %s", ninja_from_sdk)
return ninja_from_sdk
raise Fail("Can't find ninja")
def get_toolchain_file(self):
if not self.config.force_opencv_toolchain:
toolchain = os.path.join(os.environ['ANDROID_NDK'], 'build', 'cmake', 'android.toolchain.cmake')
if os.path.exists(toolchain):
return toolchain
toolchain = os.path.join(SCRIPT_DIR, "android.toolchain.cmake")
if os.path.exists(toolchain):
return toolchain
else:
raise Fail("Can't find toolchain")
def get_engine_apk_dest(self, engdest):
return os.path.join(engdest, "platforms", "android", "service", "engine", ".build")
def add_extra_pack(self, ver, path):
if path is None:
return
self.extra_packs.append((ver, check_dir(path)))
def clean_library_build_dir(self):
for d in ["CMakeCache.txt", "CMakeFiles/", "bin/", "libs/", "lib/", "package/", "install/samples/"]:
rm_one(d)
def build_library(self, abi, do_install):
cmd = [self.cmake_path, "-GNinja"]
cmake_vars = dict(
CMAKE_TOOLCHAIN_FILE=self.get_toolchain_file(),
INSTALL_CREATE_DISTRIB="ON",
WITH_OPENCL="OFF",
WITH_IPP=("ON" if abi.haveIPP() else "OFF"),
WITH_TBB="ON",
BUILD_EXAMPLES="OFF",
BUILD_TESTS="OFF",
BUILD_PERF_TESTS="OFF",
BUILD_DOCS="OFF",
BUILD_ANDROID_EXAMPLES=("OFF" if self.no_samples_build else "ON"),
INSTALL_ANDROID_EXAMPLES=("OFF" if self.no_samples_build else "ON"),
)
if self.ninja_path != 'ninja':
cmake_vars['CMAKE_MAKE_PROGRAM'] = self.ninja_path
if self.debug:
cmake_vars['CMAKE_BUILD_TYPE'] = "Debug"
if self.debug_info: # Release with debug info
cmake_vars['BUILD_WITH_DEBUG_INFO'] = "ON"
if self.opencl:
cmake_vars['WITH_OPENCL'] = "ON"
if self.config.modules_list is not None:
cmd.append("-DBUILD_LIST='%s'" % self.config.modules_list)
if self.config.extra_modules_path is not None:
cmd.append("-DOPENCV_EXTRA_MODULES_PATH='%s'" % self.config.extra_modules_path)
if self.use_ccache == True:
cmd.append("-DNDK_CCACHE=ccache")
if do_install:
cmd.extend(["-DBUILD_TESTS=ON", "-DINSTALL_TESTS=ON"])
cmake_vars.update(abi.cmake_vars)
cmd += [ "-D%s='%s'" % (k, v) for (k, v) in cmake_vars.items() if v is not None]
cmd.append(self.opencvdir)
execute(cmd)
# full parallelism for C++ compilation tasks
execute([self.ninja_path, "opencv_modules"])
# limit parallelism for building samples (avoid huge memory consumption)
if self.no_samples_build:
execute([self.ninja_path, "install" if (self.debug_info or self.debug) else "install/strip"])
else:
execute([self.ninja_path, "-j1" if (self.debug_info or self.debug) else "-j3", "install" if (self.debug_info or self.debug) else "install/strip"])
def build_javadoc(self):
classpaths = []
for dir, _, files in os.walk(os.environ["ANDROID_SDK"]):
for f in files:
if f == "android.jar" or f == "annotations.jar":
classpaths.append(os.path.join(dir, f))
srcdir = os.path.join(self.resultdest, 'sdk', 'java', 'src')
dstdir = self.docdest
# synchronize with modules/java/jar/build.xml.in
shutil.copy2(os.path.join(SCRIPT_DIR, '../../doc/mymath.js'), dstdir)
cmd = [
"javadoc",
'-windowtitle', 'OpenCV %s Java documentation' % self.opencv_version,
'-doctitle', 'OpenCV Java documentation (%s)' % self.opencv_version,
"-nodeprecated",
"-public",
'-sourcepath', srcdir,
'-encoding', 'UTF-8',
'-charset', 'UTF-8',
'-docencoding', 'UTF-8',
'--allow-script-in-comments',
'-header',
'''
<script>
var url = window.location.href;
var pos = url.lastIndexOf('/javadoc/');
url = pos >= 0 ? (url.substring(0, pos) + '/javadoc/mymath.js') : (window.location.origin + '/mymath.js');
var script = document.createElement('script');
script.src = '%s/MathJax.js?config=TeX-AMS-MML_HTMLorMML,' + url;
document.getElementsByTagName('head')[0].appendChild(script);
</script>
''' % 'https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.0',
'-bottom', 'Generated on %s / OpenCV %s' % (time.strftime("%Y-%m-%d %H:%M:%S"), self.opencv_version),
"-d", dstdir,
"-classpath", ":".join(classpaths),
'-subpackages', 'org.opencv',
]
execute(cmd)
def gather_results(self):
# Copy all files
root = os.path.join(self.libdest, "install")
for item in os.listdir(root):
src = os.path.join(root, item)
dst = os.path.join(self.resultdest, item)
if os.path.isdir(src):
log.info("Copy dir: %s", item)
if self.config.force_copy:
copytree_smart(src, dst)
else:
move_smart(src, dst)
elif os.path.isfile(src):
log.info("Copy file: %s", item)
if self.config.force_copy:
shutil.copy2(src, dst)
else:
shutil.move(src, dst)
def get_ndk_dir():
# look to see if Android NDK is installed
android_sdk_ndk = os.path.join(os.environ["ANDROID_SDK"], 'ndk')
android_sdk_ndk_bundle = os.path.join(os.environ["ANDROID_SDK"], 'ndk-bundle')
if os.path.exists(android_sdk_ndk):
ndk_subdirs = [f for f in os.listdir(android_sdk_ndk) if os.path.exists(os.path.join(android_sdk_ndk, f, 'package.xml'))]
if len(ndk_subdirs) > 0:
# there could be more than one - get the most recent
ndk_from_sdk = os.path.join(android_sdk_ndk, get_highest_version(ndk_subdirs))
log.info("Using NDK (side-by-side) from Android SDK: %s", ndk_from_sdk)
return ndk_from_sdk
if os.path.exists(os.path.join(android_sdk_ndk_bundle, 'package.xml')):
log.info("Using NDK bundle from Android SDK: %s", android_sdk_ndk_bundle)
return android_sdk_ndk_bundle
return None
#===================================================================================================
if __name__ == "__main__":
parser = argparse.ArgumentParser(description='Build OpenCV for Android SDK')
parser.add_argument("work_dir", nargs='?', default='.', help="Working directory (and output)")
parser.add_argument("opencv_dir", nargs='?', default=os.path.join(SCRIPT_DIR, '../..'), help="Path to OpenCV source dir")
parser.add_argument('--config', default='ndk-18-api-level-21.config.py', type=str, help="Package build configuration", )
parser.add_argument('--ndk_path', help="Path to Android NDK to use for build")
parser.add_argument('--sdk_path', help="Path to Android SDK to use for build")
parser.add_argument('--use_android_buildtools', action="store_true", help='Use cmake/ninja build tools from Android SDK')
parser.add_argument("--modules_list", help="List of modules to include for build")
parser.add_argument("--extra_modules_path", help="Path to extra modules to use for build")
parser.add_argument('--sign_with', help="Certificate to sign the Manager apk")
parser.add_argument('--build_doc', action="store_true", help="Build javadoc")
parser.add_argument('--no_ccache', action="store_true", help="Do not use ccache during library build")
parser.add_argument('--force_copy', action="store_true", help="Do not use file move during library build (useful for debug)")
parser.add_argument('--force_opencv_toolchain', action="store_true", help="Do not use toolchain from Android NDK")
parser.add_argument('--debug', action="store_true", help="Build 'Debug' binaries (CMAKE_BUILD_TYPE=Debug)")
parser.add_argument('--debug_info', action="store_true", help="Build with debug information (useful for Release mode: BUILD_WITH_DEBUG_INFO=ON)")
parser.add_argument('--no_samples_build', action="store_true", help="Do not build samples (speeds up build)")
parser.add_argument('--opencl', action="store_true", help="Enable OpenCL support")
args = parser.parse_args()
log.basicConfig(format='%(message)s', level=log.DEBUG)
log.debug("Args: %s", args)
if args.ndk_path is not None:
os.environ["ANDROID_NDK"] = args.ndk_path
if args.sdk_path is not None:
os.environ["ANDROID_SDK"] = args.sdk_path
if not 'ANDROID_HOME' in os.environ and 'ANDROID_SDK' in os.environ:
os.environ['ANDROID_HOME'] = os.environ["ANDROID_SDK"]
if not 'ANDROID_SDK' in os.environ:
raise Fail("SDK location not set. Either pass --sdk_path or set ANDROID_SDK environment variable")
# look for an NDK installed with the Android SDK
if not 'ANDROID_NDK' in os.environ and 'ANDROID_SDK' in os.environ:
sdk_ndk_dir = get_ndk_dir()
if sdk_ndk_dir:
os.environ['ANDROID_NDK'] = sdk_ndk_dir
if not 'ANDROID_NDK' in os.environ:
raise Fail("NDK location not set. Either pass --ndk_path or set ANDROID_NDK environment variable")
show_samples_build_warning = False
#also set ANDROID_NDK_HOME (needed by the gradle build)
if not 'ANDROID_NDK_HOME' in os.environ and 'ANDROID_NDK' in os.environ:
os.environ['ANDROID_NDK_HOME'] = os.environ["ANDROID_NDK"]
show_samples_build_warning = True
if not check_executable(['ccache', '--version']):
log.info("ccache not found - disabling ccache support")
args.no_ccache = True
if os.path.realpath(args.work_dir) == os.path.realpath(SCRIPT_DIR):
raise Fail("Specify workdir (building from script directory is not supported)")
if os.path.realpath(args.work_dir) == os.path.realpath(args.opencv_dir):
raise Fail("Specify workdir (building from OpenCV source directory is not supported)")
# Relative paths become invalid in sub-directories
if args.opencv_dir is not None and not os.path.isabs(args.opencv_dir):
args.opencv_dir = os.path.abspath(args.opencv_dir)
if args.extra_modules_path is not None and not os.path.isabs(args.extra_modules_path):
args.extra_modules_path = os.path.abspath(args.extra_modules_path)
cpath = args.config
if not os.path.exists(cpath):
cpath = os.path.join(SCRIPT_DIR, cpath)
if not os.path.exists(cpath):
raise Fail('Config "%s" is missing' % args.config)
with open(cpath, 'r') as f:
cfg = f.read()
print("Package configuration:")
print('=' * 80)
print(cfg.strip())
print('=' * 80)
ABIs = None # make flake8 happy
exec(compile(cfg, cpath, 'exec'))
log.info("Android NDK path: %s", os.environ["ANDROID_NDK"])
log.info("Android SDK path: %s", os.environ["ANDROID_SDK"])
builder = Builder(args.work_dir, args.opencv_dir, args)
log.info("Detected OpenCV version: %s", builder.opencv_version)
for i, abi in enumerate(ABIs):
do_install = (i == 0)
log.info("=====")
log.info("===== Building library for %s", abi)
log.info("=====")
os.chdir(builder.libdest)
builder.clean_library_build_dir()
builder.build_library(abi, do_install)
builder.gather_results()
if args.build_doc:
builder.build_javadoc()
log.info("=====")
log.info("===== Build finished")
log.info("=====")
if show_samples_build_warning:
#give a hint how to solve "Gradle sync failed: NDK not configured."
log.info("ANDROID_NDK_HOME environment variable required by the samples project is not set")
log.info("SDK location: %s", builder.resultdest)
log.info("Documentation location: %s", builder.docdest)