Open Source Computer Vision Library https://opencv.org/
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#!/usr/bin/env python
import os, sys, subprocess, argparse, shutil, glob, re, multiprocessing
import logging as log
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.info("Executing: %s" % 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_file(d):
d = os.path.abspath(d)
if os.path.exists(d):
if os.path.isfile(d):
return True
else:
return False
return False
def find_file(name, path):
for root, dirs, files in os.walk(path):
if name in files:
return os.path.join(root, name)
def determine_emcc_version(emscripten_dir):
ret = subprocess.check_output([os.path.join(emscripten_dir, "emcc"), "--version"])
m = re.match(r'^emcc.*(\d+\.\d+\.\d+)', ret, flags=re.IGNORECASE)
return m.group(1)
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()
class Builder:
def __init__(self, options):
self.options = options
self.build_dir = check_dir(options.build_dir, create=True)
self.opencv_dir = check_dir(options.opencv_dir)
self.emscripten_dir = check_dir(options.emscripten_dir)
self.opencv_version = determine_opencv_version(os.path.join(self.opencv_dir, "modules", "core", "include", "opencv2", "core", "version.hpp"))
self.emcc_version = determine_emcc_version(self.emscripten_dir)
def get_toolchain_file(self):
return os.path.join(self.emscripten_dir, "cmake", "Modules", "Platform", "Emscripten.cmake")
def clean_build_dir(self):
for d in ["CMakeCache.txt", "CMakeFiles/", "bin/", "libs/", "lib/", "modules"]:
rm_one(d)
def get_cmake_cmd(self):
cmd = ["cmake",
"-DCMAKE_BUILD_TYPE=Release",
"-DCMAKE_TOOLCHAIN_FILE='%s'" % self.get_toolchain_file(),
"-DCPU_BASELINE=''",
"-DCPU_DISPATCH=''",
"-DCV_TRACE=OFF",
"-DBUILD_SHARED_LIBS=OFF",
"-DWITH_1394=OFF",
"-DWITH_VTK=OFF",
"-DWITH_EIGEN=OFF",
"-DWITH_FFMPEG=OFF",
"-DWITH_GSTREAMER=OFF",
"-DWITH_GTK=OFF",
"-DWITH_GTK_2_X=OFF",
"-DWITH_IPP=OFF",
"-DWITH_JASPER=OFF",
"-DWITH_JPEG=OFF",
"-DWITH_WEBP=OFF",
"-DWITH_OPENEXR=OFF",
"-DWITH_OPENGL=OFF",
"-DWITH_OPENVX=OFF",
"-DWITH_OPENNI=OFF",
"-DWITH_OPENNI2=OFF",
"-DWITH_PNG=OFF",
"-DWITH_TBB=OFF",
"-DWITH_PTHREADS_PF=OFF",
"-DWITH_TIFF=OFF",
"-DWITH_V4L=OFF",
"-DWITH_OPENCL=OFF",
"-DWITH_OPENCL_SVM=OFF",
"-DWITH_OPENCLAMDFFT=OFF",
"-DWITH_OPENCLAMDBLAS=OFF",
"-DWITH_MATLAB=OFF",
"-DWITH_GPHOTO2=OFF",
"-DWITH_LAPACK=OFF",
"-DWITH_ITT=OFF",
"-DBUILD_ZLIB=ON",
"-DBUILD_opencv_apps=OFF",
"-DBUILD_opencv_calib3d=OFF",
"-DBUILD_opencv_dnn=ON",
"-DBUILD_opencv_features2d=OFF",
"-DBUILD_opencv_flann=OFF",
"-DBUILD_opencv_ml=OFF",
"-DBUILD_opencv_photo=OFF",
"-DBUILD_opencv_imgcodecs=OFF",
"-DBUILD_opencv_shape=OFF",
"-DBUILD_opencv_videoio=OFF",
"-DBUILD_opencv_videostab=OFF",
"-DBUILD_opencv_highgui=OFF",
"-DBUILD_opencv_superres=OFF",
"-DBUILD_opencv_stitching=OFF",
"-DBUILD_opencv_java=OFF",
"-DBUILD_opencv_js=ON",
"-DBUILD_opencv_python2=OFF",
"-DBUILD_opencv_python3=OFF",
"-DBUILD_EXAMPLES=OFF",
"-DBUILD_PACKAGE=OFF",
"-DBUILD_TESTS=OFF",
"-DBUILD_PERF_TESTS=OFF"]
if self.options.build_doc:
cmd.append("-DBUILD_DOCS=ON")
else:
cmd.append("-DBUILD_DOCS=OFF")
flags = self.get_build_flags()
if flags:
cmd += ["-DCMAKE_C_FLAGS='%s'" % flags,
"-DCMAKE_CXX_FLAGS='%s'" % flags]
return cmd;
def get_build_flags(self):
flags = ""
if self.options.build_wasm:
flags += "-s WASM=1 "
if self.options.enable_exception:
flags += "-s DISABLE_EXCEPTION_CATCHING=0 "
return flags
def config(self):
cmd = self.get_cmake_cmd()
cmd.append(self.opencv_dir)
execute(cmd)
def build_opencvjs(self):
execute(["make", "-j", str(multiprocessing.cpu_count()), "opencv.js"])
def build_test(self):
execute(["make", "-j", str(multiprocessing.cpu_count()), "opencv_js_test"])
def build_doc(self):
execute(["make", "-j", str(multiprocessing.cpu_count()), "doxygen"])
#===================================================================================================
if __name__ == "__main__":
opencv_dir = os.path.abspath(os.path.join(os.path.dirname(sys.argv[0]), "../.."))
emscripten_dir = None
if "EMSCRIPTEN" in os.environ:
emscripten_dir = os.environ["EMSCRIPTEN"]
parser = argparse.ArgumentParser(description='Build OpenCV.js by Emscripten')
parser.add_argument("build_dir", help="Building directory (and output)")
parser.add_argument('--opencv_dir', default=opencv_dir, help='Opencv source directory (default is "../.." relative to script location)')
parser.add_argument('--emscripten_dir', default=emscripten_dir, help="Path to Emscripten to use for build")
parser.add_argument('--build_wasm', action="store_true", help="Build OpenCV.js in WebAssembly format")
parser.add_argument('--build_test', action="store_true", help="Build tests")
parser.add_argument('--build_doc', action="store_true", help="Build tutorials")
parser.add_argument('--clean_build_dir', action="store_true", help="Clean build dir")
parser.add_argument('--skip_config', action="store_true", help="Skip cmake config")
parser.add_argument('--config_only', action="store_true", help="Only do cmake config")
parser.add_argument('--enable_exception', action="store_true", help="Enable exception handling")
args = parser.parse_args()
log.basicConfig(format='%(message)s', level=log.DEBUG)
log.debug("Args: %s", args)
if args.emscripten_dir is None:
log.info("Cannot get Emscripten path, please specify it either by EMSCRIPTEN environment variable or --emscripten_dir option.")
sys.exit(-1)
builder = Builder(args)
log.info("Detected OpenCV version: %s", builder.opencv_version)
log.info("Detected emcc version: %s", builder.emcc_version)
os.chdir(builder.build_dir)
if args.clean_build_dir:
log.info("=====")
log.info("===== Clean build dir %s", builder.build_dir)
log.info("=====")
builder.clean_build_dir()
if not args.skip_config:
target = "asm.js"
if args.build_wasm:
target = "wasm"
log.info("=====")
log.info("===== Config OpenCV.js build for %s" % target)
log.info("=====")
builder.config()
if args.config_only:
sys.exit(0);
log.info("=====")
log.info("===== Building OpenCV.js in %s", "asm.js" if not args.build_wasm else "wasm")
log.info("=====")
builder.build_opencvjs()
if args.build_test:
log.info("=====")
log.info("===== Building OpenCV.js tests")
log.info("=====")
builder.build_test()
if args.build_doc:
log.info("=====")
log.info("===== Building OpenCV.js tutorials")
log.info("=====")
builder.build_doc()
log.info("=====")
log.info("===== Build finished")
log.info("=====")
opencvjs_path = os.path.join(builder.build_dir, "bin", "opencv.js")
if check_file(opencvjs_path):
log.info("OpenCV.js location: %s", opencvjs_path)
if args.build_test:
opencvjs_test_path = os.path.join(builder.build_dir, "bin", "tests.html")
if check_file(opencvjs_test_path):
log.info("OpenCV.js tests location: %s", opencvjs_test_path)
if args.build_doc:
opencvjs_tutorial_path = find_file("tutorial_js_root.html", os.path.join(builder.build_dir, "doc", "doxygen", "html"))
if check_file(opencvjs_tutorial_path):
log.info("OpenCV.js tutorials location: %s", opencvjs_tutorial_path)