wscript

#!/usr/bin/env python
# -*- coding: utf-8 -*-

from __future__ import print_function

import os
import sys
import platform


def get_git_version():
    """ try grab the current version number from git"""
    version = "Undefined"
    if os.path.exists(".git"):
        try:
            version = os.popen("git describe --dirty --always").read().strip()
        except Exception as e:
            print(e)
    return version


APPNAME = 'essentia'
VERSION = open('VERSION', 'r').read().strip('\n')
GIT_SHA = get_git_version()

top = '.'
out = 'build'

# make default --prefix=$VIRTUAL_ENV inside virtualenv
if 'VIRTUAL_ENV' in os.environ:
    default_prefix = os.environ['VIRTUAL_ENV']


def options(ctx):
    ctx.load('compiler_cxx compiler_c python')
    if sys.platform == 'win32':
        ctx.load('msvc')

    ctx.recurse('src')

    ctx.add_option('--with-cpptests', action='store_true',
                   dest='WITH_CPPTESTS', default=False,
                   help='build the c++ tests')

    ctx.add_option('--mode', action='store',
                   dest='MODE', default="release",
                   help='debug, release or default')

    ctx.add_option('--std', action='store',
                   dest='STD', default='c++11',
                   help='C++ standard to compile for [c++11 c++14 c++17 ...]')

    ctx.add_option('--arch', action='store',
                   dest='ARCH', default="x64",
                   help='Target architecture when compiling on OSX: i386, x64 or FAT')

    ctx.add_option('--no-msse', action='store_true',
                   dest='NO_MSSE', default=False,
                   help='never add compiler flags for msse')

    ctx.add_option('--cross-compile-mingw32', action='store_true',
                   dest='CROSS_COMPILE_MINGW32', default=False,
                   help='cross-compile for windows using mingw32 on linux')

    ctx.add_option('--cross-compile-android', action='store_true',
                   dest='CROSS_COMPILE_ANDROID', default=False,
                   help='cross-compile for Android using toolchain')

    ctx.add_option('--cross-compile-ios', action='store_true',
                   dest='CROSS_COMPILE_IOS', default=False,
                   help='cross-compile for iOS (ARMv7 and ARM64)')

    ctx.add_option('--cross-compile-ios-sim', action='store_true',
                   dest='CROSS_COMPILE_IOS_SIM', default=False,
                   help='cross-compile for iOS (i386)')

    ctx.add_option('--emscripten', action='store_true',
                   dest='EMSCRIPTEN', default=False,
                   help='compile Essentia to Javascript with Emscripten')


def configure(ctx):
    print('→ configuring the project in ' + ctx.path.abspath())

    ctx.env.WITH_EXAMPLES        = ctx.options.WITH_EXAMPLES
    ctx.env.WITH_PYTHON          = ctx.options.WITH_PYTHON
    ctx.env.ONLY_PYTHON          = ctx.options.ONLY_PYTHON
    ctx.env.WITH_VAMP            = ctx.options.WITH_VAMP
    ctx.env.BUILD_STATIC         = ctx.options.BUILD_STATIC
    ctx.env.STATIC_DEPENDENCIES  = ctx.options.STATIC_DEPENDENCIES
    ctx.env.WITH_STATIC_EXAMPLES = ctx.options.WITH_STATIC_EXAMPLES
    ctx.env.PKG_CONFIG_PATH      = ctx.options.PKG_CONFIG_PATH
    ctx.env.WITH_GAIA            = ctx.options.WITH_GAIA
    ctx.env.WITH_TENSORFLOW      = ctx.options.WITH_TENSORFLOW
    ctx.env.LIGHTWEIGHT          = ctx.options.LIGHTWEIGHT
    ctx.env.EXAMPLES             = ctx.options.EXAMPLES
    ctx.env.EXAMPLE_LIST         = []
    ctx.env.ALGOIGNORE           = []
    ctx.env.IGNORE_ALGOS         = ctx.options.IGNORE_ALGOS
    ctx.env.ALGOINCLUDE          = []
    ctx.env.INCLUDE_ALGOS        = ctx.options.INCLUDE_ALGOS
    ctx.env.FFT                  = ctx.options.FFT
    ctx.env.NO_MSSE              = ctx.options.NO_MSSE


    if ctx.options.CROSS_COMPILE_MINGW32:
        if ctx.env.WITH_EXAMPLES:
            ctx.env.WITH_STATIC_EXAMPLES = True
            print('WARNING: Using --with-static-examples flag instead of --with-examples for cross-compilation with MinGW')

    if ctx.env.WITH_STATIC_EXAMPLES:
        ctx.env.BUILD_STATIC = True
        ctx.env.STATIC_DEPENDENCIES = True

    ctx.env.VERSION = VERSION
    ctx.env.GIT_SHA = GIT_SHA

    ctx.env.WITH_CPPTESTS = ctx.options.WITH_CPPTESTS

    # compiler flags
    ctx.env.CXXFLAGS = ['-std=' + ctx.options.STD]  # c++11 by default

    if sys.platform != 'win32':
        # msvc does not support -pipe
        ctx.env.CXXFLAGS += ['-pipe', '-Wall']
    else:
        ctx.env.CXXFLAGS += ['-W2', '-EHsc']

    # force using SSE floating point (default for 64bit in gcc) instead of
    # 387 floating point (used for 32bit in gcc) to avoid numerical differences
    # between 32 and 64bit builds (see https://github.com/MTG/essentia/issues/179)
    if (not ctx.options.EMSCRIPTEN and 
        not ctx.options.CROSS_COMPILE_ANDROID and 
        not ctx.options.CROSS_COMPILE_IOS and
        not ctx.options.NO_MSSE and
        sys.platform != 'win32'):
        ctx.env.CXXFLAGS += ['-msse', '-msse2', '-mfpmath=sse']

    # define this to be stricter, but sometimes some libraries can give problems...
    #ctx.env.CXXFLAGS += [ '-Werror' ]

    if ctx.options.MODE == 'debug':
        print ('→ Building in debug mode')
        ctx.env.CXXFLAGS += ['-g']

    elif ctx.options.MODE == 'release':
        print ('→ Building in release mode')
        ctx.env.CXXFLAGS += ['-O2']  # '-march=native' ] # '-msse3', '-mfpmath=sse' ]

    elif ctx.options.MODE == 'default':
        pass

    else:
        raise ValueError('mode should be either "debug" or "release" or "default"')

    if not ctx.options.CROSS_COMPILE_MINGW32 and sys.platform != 'win32':
        # required if we want to use libessentia.a to be linked in the python bindings
        # (dynamic library, needs -fPIC)
        ctx.env.CXXFLAGS += ['-fPIC']
        ctx.env.CPPFLAGS += ['-fPIC']  # need that for KissFFT

    ctx.env.CROSS_COMPILE_MINGW32 = ctx.options.CROSS_COMPILE_MINGW32

    # global defines
    ctx.env.DEFINES = []

    if ctx.options.EMSCRIPTEN:
        ctx.env.CXXFLAGS += ['-I' + os.path.join(os.environ['EMSCRIPTEN'], 'system', 'lib', 'libcxxabi', 'include')]
        ctx.env.CXXFLAGS += ['-Oz']
    elif sys.platform == 'darwin':
        # clang fails on 10.7 using <atomic>, because libc++ is not new enough
        #ctx.env.CC = 'clang'
        #ctx.env.CXX = 'clang++'
        #ctx.env.CXXFLAGS = [ '-stdlib=libc++', '-std=c++11', '-Wno-gnu' ]
        #ctx.env.LINKFLAGS = [ '-stdlib=libc++' ]

        ctx.env.DEFINES += ['GTEST_HAS_TR1_TUPLE=0']
        # for defining static const variables in header
        # ctx.env.CXXFLAGS += [ '-Wno-static-float-init' ]
        # add /usr/local/include as the brew formula for yaml doesn't have
        # the cflags properly set
        #ctx.env.CXXFLAGS += [ '-I/usr/local/include' ]

        if ctx.options.ARCH == 'i386':
            ctx.env.CXXFLAGS += ['-arch', 'i386']
            ctx.env.LINKFLAGS += ['-arch', 'i386']
            ctx.env.LDFLAGS = ['-arch', 'i386']
        if ctx.options.ARCH == 'FAT':
            ctx.env.CXXFLAGS += ['-arch', 'i386', '-arch', 'x86_64']
            ctx.env.LINKFLAGS += ['-arch', 'i386', '-arch', 'x86_64']
            ctx.env.LDFLAGS = ['-arch', 'i386', '-arch', 'x86_64']

    elif sys.platform.startswith('linux'):
        # include -pthread flag because not all versions of gcc provide it automatically
        ctx.env.CXXFLAGS += ['-pthread']
        ctx.env.LINKFLAGS += ['-pthread']

    elif sys.platform == 'win32':
        print ("Building on win32")

        """
        # compile libgcc and libstd statically when using MinGW
        ctx.env.CXXFLAGS = ['-static-libgcc', '-static-libstdc++']

        win_path = "packaging/win32_3rdparty"

        # Establish MINGW locations
        tdm_root = ctx.options.prefix
        tdm_bin = tdm_root + "/bin"
        tdm_include = tdm_root + "/include"
        tdm_lib = tdm_root + "/lib"

        # make pkgconfig find 3rdparty libraries in packaging/win32_3rdparty
        # libs_3rdparty = ['yaml-0.1.5', 'fftw-3.3.3', 'libav-0.8.9', 'libsamplerate-0.1.8', 'chromaprint-1.4.2']
        # libs_paths = [';packaging\win32_3rdparty\\' + lib + '\lib\pkgconfig' for lib in libs_3rdparty]
        # os.environ["PKG_CONFIG_PATH"] = ';'.join(libs_paths)

        os.environ["PKG_CONFIG_PATH"] = tdm_root + '\lib\pkgconfig'

        # TODO why this code does not work?
        # force the use of mingw gcc compiler instead of msvc
        #ctx.env.CC = 'gcc'
        #ctx.env.CXX = 'g++'
        
        import distutils.dir_util

        print("copying pkgconfig ...")
        distutils.dir_util.copy_tree(win_path + "/pkgconfig/bin", tdm_bin)

        libs_3rdparty = ['yaml-0.1.5', 'fftw-3.3.3', 'libav-0.8.9', 'libsamplerate-0.1.8', 'taglib-1.9.1', 'chromaprint-1.4.2']
        for lib in libs_3rdparty:
            print("copying " + lib + "...")
            distutils.dir_util.copy_tree(win_path + "/" + lib + "/include", tdm_include)
            distutils.dir_util.copy_tree(win_path + "/" + lib + "/lib", tdm_lib)
        """

    if ctx.options.CROSS_COMPILE_ANDROID:
        print ("→ Cross-compiling for Android ARM")
        # GCC is depricated for Android NDK
        # Use clang with libc++
        #ctx.find_program('arm-linux-androideabi-gcc', var='CC')
        #ctx.find_program('arm-linux-androideabi-g++', var='CXX')
        #ctx.find_program('arm-linux-androideabi-ar', var='AR')
        ctx.find_program('clang', var='CC')
        ctx.find_program('clang++', var='CXX')
        ctx.env.CXXFLAGS += ['-std=c++11']
        ctx.env.LINKFLAGS += ['-Wl,-soname,libessentia.so', '-latomic']

    if ctx.options.CROSS_COMPILE_IOS:
        print ("→ Cross-compiling for iOS (ARMv7 and ARM64)")
        ctx.env.CXXFLAGS += ['-arch', 'armv7']
        ctx.env.LINKFLAGS += ['-arch', 'armv7']
        ctx.env.LDFLAGS += ['-arch', 'armv7']
        ctx.env.CXXFLAGS += ['-arch', 'arm64']
        ctx.env.LINKFLAGS += ['-arch', 'arm64']
        ctx.env.LDFLAGS += ['-arch', 'armv64']

        ctx.env.CXXFLAGS += ['-stdlib=libc++']
        ctx.env.CXXFLAGS += ['-miphoneos-version-min=5.0']
        ctx.env.CXXFLAGS += ['-isysroot', '/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk']
        ctx.env.CXXFLAGS += ['-fembed-bitcode']

    if ctx.options.CROSS_COMPILE_IOS_SIM:
        print ("→ Cross-compiling for iOS Simulator (i386)")
        ctx.env.CXXFLAGS += ['-arch', 'i386']
        ctx.env.LINKFLAGS += ['-arch', 'i386']
        ctx.env.LDFLAGS += ['-arch', 'i386']
        ctx.env.CXXFLAGS += ['-arch', 'x86_64']
        ctx.env.LINKFLAGS += ['-arch', 'x86_64']
        ctx.env.LDFLAGS += ['-arch', 'x86_64']

        ctx.env.CXXFLAGS += ['-stdlib=libc++']
        ctx.env.CXXFLAGS += ['-miphoneos-version-min=5.0']
        ctx.env.CXXFLAGS += ['-isysroot', '/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator.sdk']

    # use manually prebuilt dependencies in the case of static examples or mingw cross-build
    if ctx.options.CROSS_COMPILE_MINGW32:
        print ("→ Cross-compiling for Windows with MinGW")
        os.environ["PKG_CONFIG_PATH"] = 'packaging/win32_3rdparty/lib/pkgconfig'

        # locate MinGW compilers and use them
        ctx.find_program('i686-w64-mingw32-gcc', var='CC')
        ctx.find_program('i686-w64-mingw32-g++', var='CXX')
        ctx.find_program('i686-w64-mingw32-ar', var='AR')

        # compile libgcc and libstd statically when using MinGW
        ctx.env.CXXFLAGS = ['-static-libgcc', '-static-libstdc++']


    ctx.load('compiler_cxx compiler_c')

    if ctx.env.STATIC_DEPENDENCIES \
        and (sys.platform.startswith('linux') or sys.platform == 'darwin') \
        and not ctx.options.CROSS_COMPILE_MINGW32:
        
        if not ctx.env.ONLY_PYTHON:
            print ("→ Building with static dependencies on Linux/OSX")
            os.environ["PKG_CONFIG_PATH"] = 'packaging/debian_3rdparty/lib/pkgconfig'
        
        # flags required for linking to static ffmpeg libs
        # -Bsymbolic flag is not available on clang
        if ctx.env.CXX_NAME != "clang":
            ctx.env.LINKFLAGS += ['-Wl,-Bsymbolic']
            ctx.env.LDFLAGS += ['-Wl,-Bsymbolic']

    ctx.recurse('src')


def adjust(objs, path):
    return ['%s/%s' % (path, obj) for obj in objs]


def build(ctx):
    print('→ building from ' + ctx.path.abspath())
    ctx.recurse('src')

    if ctx.env.WITH_CPPTESTS:
        ctx.program(
            source=ctx.path.ant_glob('test/src/basetest/*.cpp test/3rdparty/gtest-1.6.0/src/gtest-all.cc '),
            target='basetest',
            includes=['test/3rdparty/gtest-1.6.0/include',
                      'test/3rdparty/gtest-1.6.0'] + adjust(ctx.env.INCLUDES, 'src'),
            install_path=None,
            use='essentia ' + ctx.env.USE_LIBS
            )


def run_tests(ctx):
    ret = os.system(out + '/basetest')
    if ret:
        ctx.fatal('failed to run tests. Check test output')


def run_python_tests(ctx):
    print("Running python unit tests using %s" % sys.executable)

    # create a local python package folder
    os.system('mkdir -p build/python')
    os.system('cp -r src/python/essentia build/python/')
    os.system('cp build/src/python/_essentia*.so build/python/essentia')

    ret = os.system('PYTHONPATH=build/python:$PYTHONPATH %s test/src/unittests/all_tests.py' % sys.executable)
    if ret:
        ctx.fatal('failed to run python tests. Check test output')


def ipython(ctx):
    os.system('ipython --pylab')


def doc(ctx):
    # create a local python package folder
    os.system('mkdir -p build/python')
    os.system('cp -r src/python/essentia build/python/')
    os.system('cp build/src/python/_essentia*.so build/python/essentia')

    pythonpath = os.path.abspath('build/python')
    os.system('PYTHONPATH=%s doc/build_sphinx_doc.sh %s' % (pythonpath, sys.executable))