wscript

#!/usr/bin/env python
from waflib.extras import autowaf as autowaf
from waflib import Options
import os
import re
import subprocess
import sys
import platform as PLATFORM
from waflib.Build import BuildContext
import waflib.Utils as Utils

# Fixup OSX 10.5/10.6 builds
# prefer gcc, g++ 4.x over ancient clang-1.5
from waflib.Tools.compiler_c import c_compiler
from waflib.Tools.compiler_cxx import cxx_compiler
c_compiler['darwin'] = ['gcc', 'clang' ]
cxx_compiler['darwin'] = ['g++', 'clang++' ]

compiler_flags_dictionaries= {
    'gcc' : {
        # Flags required when building a debug build
        'debuggable' : [ '-g' ],
        # Flags required for the linker (if any) when building a debug build
        'linker-debuggable' : '',
        # Flags required when building a non-debug optimized build
        'nondebuggable' : '-DNDEBUG',
        # Flags required to enable profiling at runtime with optimized builds
        'profile' : [ '-fno-omit-frame-pointer' ],
        # Flags required to enable gprofile profiling
        'gprofile' : '-pg',
        # Flags required to disable warnings about unused arguments to function calls
        'silence-unused-arguments' : '',
        # Flags required to use SSE unit for general math
        'sse' : '-msse',
        # Flags required to use SSE unit for floating point math
        'fpmath-sse' : '-mfpmath=sse',
        # Flags required to use _xgetbv with mingw+gcc > 8.2
        'xsaveintrin' : '-mxsave',
        # Flags required to use XMM Intrinsics
        'xmmintrinsics' : '-DUSE_XMMINTRIN',
        # Flags to use posix pipes between compiler stages
        'pipe' : '-pipe',
        # Flags for maximally optimized build
        'full-optimization' : [ '-O3', '-fomit-frame-pointer', '-ffast-math', '-fstrength-reduce' ],
        # Flag to ensure that compiler error output includes column/line numbers
        'show-column' : '-fshow-column',
        # Flags required to build for x86 only (OS X feature)
        'generic-x86' : '',
        # Flags required to build for PowerPC only (OS X feature)
        'generic-ppc' : '',
        # Flags required to build for PowerPC only (OS X feature)
        'generic-arm64' : '',
        # All flags required to get basic warnings to be generated by the compiler
        'basic-warnings' : [ '-Wall', '-Wpointer-arith', '-Wcast-qual', '-Wcast-align', '-Wno-unused-parameter' ],
        # Any additional flags for warnings that are specific to C (not C++)
        'extra-c-warnings' : [ '-Wstrict-prototypes', '-Wmissing-prototypes' ],
        # Any additional flags for warnings that are specific to C++ (not C)
        'extra-cxx-warnings' : [ '-Woverloaded-virtual', '-Wno-unused-local-typedefs', '-Wno-deprecated-copy' ],
        # Flags used for "strict" compilation, C and C++ (i.e. compiler will warn about language issues)
        'strict' : ['-Wall', '-Wcast-align', '-Wextra', '-Wwrite-strings', '-Wunsafe-loop-optimizations', '-Wlogical-op' ],
        # Flags used for "strict" compilation, C only (i.e. compiler will warn about language issues)
        'c-strict' : ['-std=c99', '-pedantic', '-Wshadow'],
        # Flags used for "strict" compilation, C++ only (i.e. compiler will warn about language issues)
        'cxx-strict' : [ '-Wnon-virtual-dtor', '-Woverloaded-virtual', '-fstrict-overflow' ],
        # Flags required for whatever consider the strictest possible compilation
        'ultra-strict' : ['-Wredundant-decls', '-Wstrict-prototypes', '-Wmissing-prototypes'],
        # Flag to turn on C99 compliance by itself
        'c99': '-std=c99',
        # Flag to enable AT&T assembler syntax
        'attasm': '-masm=att',
        # Flags to make AVX instructions/intrinsics available
        'avx': '-mavx',
        # Flags to make AVX512F instructions/intrinsics available
        'avx512f': '-mavx512f',
        # Flags to make FMA instructions/intrinsics available
        'fma': '-mfma',
        # Flags to make ARM/NEON instructions/intrinsics available
        'neon': '-mfpu=neon',
        # Flags to generate position independent code, when needed to build a shared object
        'pic': '-fPIC',
        # Flags required to compile C code with anonymous unions (only part of C11)
        'c-anonymous-union': '-fms-extensions',
    },
    'msvc' : {
        'debuggable' : ['/DDEBUG', '/Od', '/Zi', '/MDd', '/Gd', '/EHsc'],
        'linker-debuggable' : ['/DEBUG', '/INCREMENTAL' ],
        'nondebuggable' : ['/DNDEBUG', '/Ob1', '/MD', '/Gd', '/EHsc'],
        'profile' : '/Oy-',
        'silence-unused-arguments' : '',
        'sse' : '',
        'xsaveintrin' : '',
        'fpmath-sse' : '',
        'xmmintrinsics' : '',
        'pipe' : '',
        'full-optimization' : '/O2',
        'no-frame-pointer' : '',
        'fast-math' : '',
        'strength-reduce' : '',
        'show-column' : '',
        'generic-x86' : '',
        'generic-ppc' : '',
        'generic-arm64' : '',
        'basic-warnings' : '',
        'extra-c-warnings' : '',
        'extra-cxx-warnings' : '',
        'ultra-strict' : '',
        'c-strict' : '',
        'cxx-strict' : '',
        'strict' : '',
        'c99': '/TP',
        'attasm': '',
        'avx': '',
        'neon': '',
        'pic': '',
        'c-anonymous-union': '',
    },
}

# Copy, edit and insert variants on gcc dict for gcc-darwin and clang

gcc_darwin_dict = compiler_flags_dictionaries['gcc'].copy()
gcc_darwin_dict['extra-cxx-warnings'] = [ '-Woverloaded-virtual' ]
gcc_darwin_dict['cxx-strict'] = [ '-ansi', '-Wnon-virtual-dtor', '-Woverloaded-virtual' ]
gcc_darwin_dict['strict'] = ['-Wall', '-Wcast-align', '-Wextra', '-Wwrite-strings' ]
gcc_darwin_dict['generic-x86'] = [ '-arch', 'i386' ]
gcc_darwin_dict['generic-ppc'] = [ '-arch', 'ppc' ]
gcc_darwin_dict['generic-arm64'] = [ '-arch', 'arm64' ]
compiler_flags_dictionaries['gcc-darwin'] = gcc_darwin_dict

clang_dict = compiler_flags_dictionaries['gcc'].copy()
clang_dict['sse'] = ''
clang_dict['fpmath-sse'] = ''
clang_dict['xsaveintrin'] = ''
clang_dict['xmmintrinsics'] = ''
clang_dict['silence-unused-arguments'] = '-Qunused-arguments'
clang_dict['extra-cxx-warnings'] = [ '-Woverloaded-virtual', '-Wno-mismatched-tags', '-Wno-cast-align', '-Wno-unused-local-typedefs', '-Wunneeded-internal-declaration' ]
clang_dict['basic-warnings'] = [ '-Wall', '-Wpointer-arith', '-Wcast-qual', '-Wcast-align', '-Wno-unused-parameter', '-Wno-deprecated-declarations' ]
clang_dict['cxx-strict'] = [ '-ansi', '-Wnon-virtual-dtor', '-Woverloaded-virtual', '-fstrict-overflow' ]
clang_dict['strict'] = ['-Wall', '-Wcast-align', '-Wextra', '-Wwrite-strings' ]
clang_dict['generic-x86'] = [ '-arch', 'i386' ]
clang_dict['generic-arm64'] = [ '-arch', 'arm64' ]
clang_dict['full-optimization'] = [ '-O3', '-fomit-frame-pointer', '-ffast-math', ]
compiler_flags_dictionaries['clang'] = clang_dict

clang_darwin_dict = compiler_flags_dictionaries['clang'].copy()
clang_darwin_dict['cxx-strict'] = [ '-ansi', '-Wnon-virtual-dtor', '-Woverloaded-virtual', ]
clang_darwin_dict['full-optimization'] = [ '-O3', '-ffast-math']
compiler_flags_dictionaries['clang-darwin'] = clang_darwin_dict

# Xcode 15 does not like our boost version, producing warnings from almost every file
clang15_darwin_dict = compiler_flags_dictionaries['clang-darwin'].copy()
clang15_darwin_dict['basic-warnings'] = clang15_darwin_dict['basic-warnings'] + ["-Wno-deprecated-builtins", "-Wno-deprecated-copy-with-user-provided-copy"]
compiler_flags_dictionaries['clang15-darwin'] = clang15_darwin_dict

# Version stuff

def fetch_git_revision_date ():
    cmd = ["git", "describe", "HEAD"]
    output = subprocess.Popen(cmd, stderr=subprocess.STDOUT, stdout=subprocess.PIPE).communicate()[0].splitlines()
    rev = re.sub(r"^[A-Za-z0-9]*\+", "", output[0].decode('utf-8'))

    cmd = ["git", "log", "-1", "--pretty=format:%ci", "HEAD"]
    output = subprocess.Popen(cmd, stderr=subprocess.STDOUT, stdout=subprocess.PIPE).communicate()[0].splitlines()
    date = output[0].decode('utf-8').split(None, 2)[0]

    return rev, date

def fetch_tarball_revision_date():
    if not os.path.exists ('libs/ardour/revision.cc'):
        print ('This tarball was not created correctly - it is missing libs/ardour/revision.cc')
        sys.exit (1)
    with open('libs/ardour/revision.cc', 'rb') as f:
        content = f.readlines()
        remove_punctuation_map = dict((ord(char), None) for char in '";')

        raw_line_tokens = content[1].decode('utf-8').strip().split(' ')
        rev = raw_line_tokens[7].translate(remove_punctuation_map)
        date = raw_line_tokens[12].translate(remove_punctuation_map)

        return rev, date

def parse_macos_version(version):
    # The [.] matches to the dot after the major version, "." would match any character
    if re.search ("^[0-9][.]", version) is not None:
        return 'ancient'
    elif re.search ("^10[.]", version) is not None:
        return 'snowleopard'
    elif re.search ("^11[.]", version) is not None:
        return 'lion'
    elif re.search ("^12[.]", version) is not None:
        return 'mountainlion'
    elif re.search ("^13[.]", version) is not None:
        return 'mavericks'
    elif re.search ("^14[.]", version) is not None:
        return 'yosemite'
    elif re.search ("^15[.]", version) is not None:
        return 'el_capitan'
    elif re.search ("^16[.]", version) is not None:
        return 'sierra'
    elif re.search ("^17[.]", version) is not None:
        return 'high_sierra'
    elif re.search ("^18[.]", version) is not None:
        return 'mojave'
    elif re.search ("^19[.]", version) is not None:
        return 'catalina'
    elif re.search ("^20[.]", version) is not None:
        return 'bigsur'
    elif re.search ("^21[.]", version) is not None:
        return 'monterey'
    elif re.search ("^22[.]", version) is not None:
        return 'ventura'
    elif re.search ("^23[.]", version) is not None:
        return 'sonoma'
    elif re.search ("^24[.]", version) is not None:
        return 'sequoia'
    else:
        return 'sequoia'


def set_version (from_file = False):
    def sanitize(s):
        # round-trip to remove anything in the string that is not encodable in
        # ASCII, yet still keep a real (utf8-encoded internally) string.
        s = s.encode ('ascii', 'ignore').decode ("utf-8")
        # In Python3, bytes is the class of binary content and encode() returns
        # bytes to transform a string according to a text encoding; str is the
        # class of normal strings (utf8-encoded internally) and decode() returns
        # that type.
        # Python 2 did not initially cater for encoding problems and can use str
        # for both binary content and for (decoded) strings. The Unicode type was
        # added to correspond to Python 3 str, and the Python 2 str type should
        # only correspond to bytes. Alas, almost everything in the Python 2
        # ecosystem has been written with str in mind and doesn't handle Unicode
        # objects correctly. If Python 2 is in use, s will be a Unicode object and
        # to avoid strange problems later we convert back to str, but in utf-8
        # nonetheless.
        if not isinstance(s, str):
            s = s.encode("utf-8")
        return s

    global MAJOR
    global MINOR
    global MICRO
    global VERSION
    global PROGRAM_VERSION
    global rev_date

    if not from_file and os.path.isdir (os.path.join(os.getcwd(), '.git')):
        rev, rev_date = fetch_git_revision_date()
    else:
        rev, rev_date = fetch_tarball_revision_date()
    rev_date = sanitize(rev_date)

    #
    # rev is now of the form MAJOR.MINOR[-rcX]-rev-commit
    # or, if right at the same rev as a release, MAJOR.MINOR[-rcX]
    #

    parts = sanitize(rev).split ('.', 1)
    MAJOR = parts[0]
    other = parts[1].split('-', 1)
    MINOR = other[0]
    if len(other) > 1:
        MICRO = other[1].rsplit('-',1)[0].replace('-','.')
    else:
        MICRO = '0'

    VERSION = MAJOR + '.' + MINOR + '.' + MICRO
    PROGRAM_VERSION = MAJOR

def fetch_gcc_version (CC):
    cmd = "%s --version" % CC
    output = subprocess.Popen(cmd, shell=True, stderr=subprocess.STDOUT, stdout=subprocess.PIPE).communicate()[0].splitlines()
    o = output[0].decode('utf-8')
    version = o.split(' ')[2].split('.')
    return version

def create_stored_revision():
    set_version ()
    rev = ""
    if os.path.exists('.git'):
        rev, rev_date = fetch_git_revision_date()
        print("Git version: " + rev + "\n")
    elif os.path.exists('libs/ardour/revision.cc'):
        print("Using packaged revision")
        return
    else:
        print("Missing libs/ardour/revision.cc.  Blame the packager.")
        sys.exit(-1)

    try:
        #
        # if you change the format of this, be sure to fix fetch_tarball_revision_date()
        # above so that  it still works.
        #
        text =  '#include "ardour/revision.h"\n'
        text += (
            'namespace ARDOUR { const char* revision = \"%s\"; '
            'const char* date = \"%s\"; }\n'
        ) % (rev, rev_date)
        print('Writing revision info to libs/ardour/revision.cc using ' + rev + ', ' + rev_date)
        o = open('libs/ardour/revision.cc', 'w')
        o.write(text)
        o.close()
    except IOError:
        print('Could not open libs/ardour/revision.cc for writing\n')
        sys.exit(-1)

def get_depstack_rev(depstack_root):
    try:
        with open(depstack_root + '/../.vers', 'r') as f:
            return f.readline().strip()[:7]
    except IOError:
        return '-unknown-'

if any(arg in ('dist', 'distcheck') for arg in sys.argv[1:]):
    create_stored_revision ()
    if not 'APPNAME' in os.environ:
        print ("You must define APPNAME in the environment when running ./waf dist/distcheck")
        sys.exit (1)
    APPNAME = os.environ['APPNAME']

# Mandatory variables
top = '.'
out = 'build'

children = [
        # patched 3rd party libs
        'libs/clearlooks-newer',
        'libs/zita-resampler',
        'libs/zita-convolver',
        # optionally external libraries
        'libs/fluidsynth',
        'libs/hidapi',
        'libs/libltc',
        'libs/ptformat',
        'libs/qm-dsp',
        'libs/vamp-plugins',
        'libs/vamp-pyin',
        'libs/aaf',
        # ytk/
        'libs/tk/ztk',
        'libs/tk/ydk-pixbuf',
        'libs/tk/ydk',
        'libs/tk/ytk',
        'libs/tk/ztkmm',
        'libs/tk/ydkmm',
        'libs/tk/ytkmm',
        'libs/tk/suil',
        # core ardour libraries
        'libs/pbd',
        'libs/lua',
        'libs/midi++2',
        'libs/evoral',
        'libs/ctrl-interface',
        'libs/surfaces',
        'libs/panners',
        'libs/backends',
        'libs/temporal',
        'libs/ardour',
        'libs/gtkmm2ext',
        'libs/audiographer',
        'libs/canvas',
        'libs/widgets',
        'libs/waveview',
        # plugins
        'libs/plugins/reasonablesynth.lv2',
        'libs/plugins/a-comp.lv2',
        'libs/plugins/a-exp.lv2',
        'libs/plugins/a-delay.lv2',
        'libs/plugins/a-eq.lv2',
        'libs/plugins/a-reverb.lv2',
        'libs/plugins/a-fluidsynth.lv2',
        #'libs/plugins/a-vapor.lv2',
        # arch independent data
        'share/export',
        'share/media',
        'share/midi_maps',
        'share/mcp',
        'share/osc',
        'share/patchfiles',
        'share/plugin_metadata',
        'share/scripts',
        'share/web_surfaces',
        # frontends
        'gtk2_ardour',
        'headless',
        'luasession',
        'session_utils',
        'cocoatea',
        # shared helper binaries (plugin-scanner, exec-wrapper)
        'libs/fst',
        'libs/vfork',
        'libs/ardouralsautil',
        'libs/auscan',
]

i18n_children = [
        'gtk2_ardour',
        'libs/ardour',
        'libs/gtkmm2ext',
        'libs/tk/ytk',
]

def set_compiler_flags (conf,opt):
    #
    # Compiler flags and other system-dependent stuff
    #
    build_host_supports_sse = False

    # Flags necessary for building
    compiler_flags = []     # generic
    c_flags = []            # C-specific
    cxx_flags = []          # C++-specific
    linker_flags = []

    # Optimization flags (overridable)
    optimization_flags = []

    # Debugging flags
    debug_flags = []

    u = PLATFORM.uname ()
    cpu = u[4]
    platform = u[0].lower()
    version = u[2]

    # waf adds -O0 -g itself. thanks waf!
    is_clang = conf.check_cxx(fragment = '''
#ifndef __clang__
#error
#endif
int main() { return 0; }''',
                         features  = 'cxx',
                         mandatory = False,
                         execute   = False,
                         msg       = 'Checking for clang')


    if platform == 'darwin' and is_clang:
        is_clang15_darwin = conf.check_cxx(fragment = '''
#if !defined __clang_major__ || __clang_major__ < 15
#error
#endif
int main() { return 0; }''',
                         features  = 'cxx',
                         mandatory = False,
                         execute   = False,
                         msg       = 'Checking for clang >= 15')


    if is_clang:
        if platform == 'darwin':
            if is_clang15_darwin:
                compiler_name = 'clang15-darwin'
            else:
                compiler_name = 'clang-darwin'
        else:
            compiler_name = 'clang'
    elif conf.env['MSVC_COMPILER']:
        compiler_name = 'msvc'
    else:
        if platform == 'darwin':
            compiler_name = 'gcc-darwin'
        else:
            compiler_name = 'gcc'

    flags_dict = compiler_flags_dictionaries[compiler_name]
    # Save the compiler flags because we need them at build time
    # when we need to add compiler specific flags in certain
    # libraries
    conf.env['compiler_flags_dict'] = flags_dict

    autowaf.set_basic_compiler_flags (conf,flags_dict)

    if conf.options.asan:
        conf.check_cxx(cxxflags=["-fsanitize=address", "-fno-omit-frame-pointer"], linkflags=["-fsanitize=address"])
        cxx_flags.append('-fsanitize=address')
        cxx_flags.append('-fno-omit-frame-pointer')
        linker_flags.append('-fsanitize=address')

    if conf.options.tsan:
        conf.check_cxx(cxxflags=["-fsanitize=thread", "-fno-omit-frame-pointer"], linkflags=["-fsanitize=thread"])
        c_flags.extend(('-fsanitize=thread', '-fno-omit-frame-pointer'))
        cxx_flags.extend(('-fsanitize=thread', '-fno-omit-frame-pointer'))
        linker_flags.append('-fsanitize=thread')

    if opt.gprofile:
        debug_flags = [ flags_dict['gprofile'] ]

    if opt.gdebug or conf.env['DEBUG']:
        debug_flags.append('-DG_ENABLE_DEBUG')

    # OSX
    if platform == 'darwin':
        conf.env['build_host'] = parse_macos_version (version)
        if conf.env['build_host'] in [ 'ancient', 'snowleopard', 'lion', 'mountainlion', 'mavericks', 'yosemite', 'el_capitan', 'sierra' ]:
            print("macOS build host is too old, macOS 10.13 or later is required")
            sys.exit (1)

    # Autodetect
    if opt.dist_target == 'auto':
        if platform == 'darwin':
            conf.env['build_target'] = parse_macos_version (version)
        else:
            match = re.search(
                    "(?P<cpu>i[0-6]86|x86_64|powerpc|ppc|ppc64|arm|s390x?)",
                    cpu)
            if (match):
                conf.env['build_target'] = match.group("cpu")
                if re.search("i[0-5]86", conf.env['build_target']):
                    conf.env['build_target'] = "i386"
            else:
                conf.env['build_target'] = 'none'
    else:
        conf.env['build_target'] = opt.dist_target

    if not opt.no_fpu_optimization:
        if conf.env['build_target'] == 'armhf' or conf.env['build_target'] == 'aarch64':
            conf.define('ARM_NEON_SUPPORT', 1)
        elif conf.env['build_target'] == 'mingw':
            if re.search ('x86_64-w64', str(conf.env['CC'])) is not None:
                conf.define ('FPU_AVX_FMA_SUPPORT', 1)
                conf.define ('FPU_AVX512F_SUPPORT', 1)
        elif conf.env['build_target'] == 'i386' or conf.env['build_target'] == 'i686' or conf.env['build_target'] == 'x86_64':
            conf.check_cxx(fragment = "#include <immintrin.h>\nint main(void) { __m512 a; _mm512_abs_ps(a); _mm512_fmadd_ps(a, a, a); (void) _mm512_reduce_min_ps(a); (void)_mm512_reduce_max_ps(a); return 0; }\n",
                           features  = ['cxx'],
                           cxxflags  = [ conf.env['compiler_flags_dict']['avx512f'], conf.env['compiler_flags_dict']['fma'], conf.env['compiler_flags_dict']['avx'] ],
                           mandatory = False,
                           execute   = False,
                           msg       = 'Checking compiler for AVX512F intrinsics',
                           okmsg     = 'Found',
                           errmsg    = 'Not supported',
                           define_name = 'FPU_AVX512F_SUPPORT')

            conf.check_cxx(fragment = "#include <immintrin.h>\nint main(void) { __m128 a; _mm_fmadd_ss(a, a, a); return 0; }\n",
                           features  = ['cxx'],
                           cxxflags  = [ conf.env['compiler_flags_dict']['fma'], conf.env['compiler_flags_dict']['avx'] ],
                           mandatory = False,
                           execute   = False,
                           msg       = 'Checking compiler for AVX/FMA intrinsics',
                           okmsg     = 'Found',
                           errmsg    = 'Not supported',
                           define_name = 'FPU_AVX_FMA_SUPPORT')

    if opt.use_libcpp or conf.env['build_host'] in [ 'high_sierra', 'mojave', 'catalina' ]:
        cxx_flags.append('--stdlib=libc++')
        linker_flags.append('--stdlib=libc++')

    if conf.options.cxx17 or platform == "darwin":
        conf.check_cxx(cxxflags=["-std=c++17"])
        cxx_flags.append('-std=c++17')

    if conf.options.cxx17 or platform == "darwin":
        if platform == "darwin":
            # Mavericks and later changed the syntax to be used when including Carbon headers,
            # from requiring a full path to requiring just the header name.
            cxx_flags.append('-DCARBON_FLAT_HEADERS')
            # Prevents visibility issues in standard headers
            conf.define("_DARWIN_C_SOURCE", 1)
            # C++17 removes 'unary_function' and 'binary_function' this breaks older boost versions
            # prior to boost 1.81.0
            cxx_flags.append('-D_LIBCPP_ENABLE_CXX17_REMOVED_UNARY_BINARY_FUNCTION')
        else:
            cxx_flags.append('-DBOOST_NO_AUTO_PTR')
            cxx_flags.append('-DBOOST_BIND_GLOBAL_PLACEHOLDERS')

    if (is_clang and platform == "darwin"):
        # Silence warnings about the non-existing osx clang compiler flags
        # -compatibility_version and -current_version.  These are Waf
        # generated and not needed with clang
        c_flags.append("-Qunused-arguments")
        cxx_flags.append("-Qunused-arguments")

    if (re.search ("(i[0-9]86|x86_64|AMD64)", cpu) is not None) and conf.env['build_target'] != 'none':

        #
        # ARCH_X86 means anything in the x86 family from i386 to x86_64
        # the compile-time presence of the macro _LP64 is used to
        # distinguish 32 and 64 bit assembler
        #

        if not (opt.arm64 or conf.env['build_target'] == 'armhf' and conf.env['build_target'] == 'aarch64'):
            compiler_flags.append ("-DARCH_X86")

        if platform == 'linux' and conf.env['build_target'] != 'armhf' and conf.env['build_target'] != 'aarch64':

            #
            # determine processor flags via /proc/cpuinfo
            #

            if conf.env['build_target'] != 'i386':

                flag_line = os.popen ("cat /proc/cpuinfo | grep '^flags'").read()[:-1]
                x86_flags = flag_line.split (": ")[1:][0].split ()

                if "mmx" in x86_flags:
                    compiler_flags.append ("-mmmx")
                if "sse" in x86_flags:
                    build_host_supports_sse = True
                if "3dnow" in x86_flags:
                    compiler_flags.append ("-m3dnow")

            if cpu == "i586":
                compiler_flags.append ("-march=i586")
            elif cpu == "i686":
                compiler_flags.append ("-march=i686")

        if not is_clang and ((conf.env['build_target'] == 'i686') or (conf.env['build_target'] == 'x86_64')) and build_host_supports_sse:
            compiler_flags.extend ([ flags_dict['sse'], flags_dict['fpmath-sse'], flags_dict['xmmintrinsics'] ])

        if (conf.env['build_target'] == 'mingw'):
            if (re.search ("(x86_64|AMD64)", cpu) is not None):
                # on Windows sse is supported by 64 bit platforms only
                build_host_supports_sse = True

                # mingw GCC compiler to uses at&t (Unix specific) assembler dialect by default
                # compiler_flags.append (["--mmnemonic=att", "msyntax=att")

                compiler_flags.extend ([ flags_dict['sse'], flags_dict['fpmath-sse'], flags_dict['xmmintrinsics'], flags_dict['attasm'] ])

                # mingw/gcc-8.2
                compiler_flags.append(flags_dict['xsaveintrin'])
                compiler_flags.append('-fno-inline-functions')

    # end of processor-specific section

    # optimization section
    if conf.env['FPU_OPTIMIZATION']:
        if sys.platform == 'darwin':
            compiler_flags.append("-DBUILD_VECLIB_OPTIMIZATIONS")
            conf.env.append_value('LINKFLAGS_OSX', ['-framework', 'Accelerate'])
        elif conf.env['build_target'] == 'i686' or conf.env['build_target'] == 'x86_64':
            compiler_flags.append ("-DBUILD_SSE_OPTIMIZATIONS")
        elif conf.env['build_target'] == 'mingw':
            # usability of the 64 bit windows assembler depends on the compiler target,
            # not the build host, which in turn can only be inferred from the name
            # of the compiler.
            if re.search ('x86_64-w64', str(conf.env['CC'])) is not None:
                    compiler_flags.append ("-DBUILD_SSE_OPTIMIZATIONS")
        if not build_host_supports_sse:
            print("\nWarning: you are building Ardour with SSE support even though your system does not support these instructions. (This may not be an error, especially if you are a package maintainer)")

    # end optimization section

    #
    # LinuxVST 32/64bit GUI distinction
    #

    if conf.env['LXVST_SUPPORT'] == True:
        if conf.env['build_target'] == 'x86_64':
            compiler_flags.append("-DLXVST_64BIT")
        else:
            compiler_flags.append("-DLXVST_32BIT")

    #
    # Set Apple Compatibility flags
    #
    if sys.platform == 'darwin':
        # special case our BigSur Intel builder
        if conf.env['build_target'] in ['bigsur'] and not opt.arm64:
            compiler_flags.extend(
                    ("-DMAC_OS_X_VERSION_MAX_ALLOWED=101300",
                     "-mmacosx-version-min=10.13"))
            linker_flags.append("-mmacosx-version-min=10.13")
        elif conf.env['build_target'] in ['high_sierra', 'mojave', 'catalina']:
            compiler_flags.extend(
                    ("-DMAC_OS_X_VERSION_MAX_ALLOWED=101300",
                     "-mmacosx-version-min=10.13"))
            linker_flags.append("-mmacosx-version-min=10.13")
        else:
            compiler_flags.extend(
                    ("-DMAC_OS_X_VERSION_MAX_ALLOWED=110000",
                     "-mmacosx-version-min=11.0"))
            linker_flags.append("-mmacosx-version-min=11.0")

    #
    # save off CPU element in an env
    #
    conf.define ('CONFIG_ARCH', cpu)

    #
    # ARCH="..." overrides all
    #

    if opt.arch is not None:
        optimization_flags = opt.arch.split()

    #
    # prepend boiler plate optimization flags that work on all architectures
    #

    optimization_flags[:0] = [flags_dict['pipe']]

    # don't prepend optimization flags if "-O<something>" is present
    prepend_opt_flags = True
    for flag in optimization_flags:
        if flag.startswith("-O"):
            prepend_opt_flags = False
            break

    if prepend_opt_flags:
        optimization_flags[:0] = flags_dict['full-optimization']

    if opt.debug_symbols:
        optimization_flags += flags_dict['debuggable']

    if opt.profile:
        optimization_flags += flags_dict['profile']

    if opt.stl_debug:
        cxx_flags.append("-D_GLIBCXX_DEBUG")

    if re.search ("bsd", sys.platform) is not None:
        linker_flags.append('-lexecinfo')

    if conf.env['DEBUG_RT_ALLOC']:
        compiler_flags.append('-DDEBUG_RT_ALLOC')
        linker_flags.append('-ldl')

    if conf.env['DEBUG_DENORMAL_EXCEPTION']:
        compiler_flags.append('-DDEBUG_DENORMAL_EXCEPTION')

    if opt.generic:
        compiler_flags.extend(flags_dict['generic-x86'])
        linker_flags.extend(flags_dict['generic-x86'])

    if opt.ppc:
        compiler_flags.extend(flags_dict['generic-ppc'])
        linker_flags.extend(flags_dict['generic-ppc'])

    if opt.arm64:
        compiler_flags.extend(flags_dict['generic-arm64'])
        linker_flags.extend(flags_dict['generic-arm64'])

    #
    # warnings flags
    #

    compiler_flags.extend(flags_dict['basic-warnings'])

    c_flags.extend(flags_dict['extra-c-warnings'])
    cxx_flags.extend (flags_dict['extra-cxx-warnings'])

    #
    # more boilerplate
    #

    # need ISOC9X for llabs()
    compiler_flags.extend(
        ('-DBOOST_SYSTEM_NO_DEPRECATED', '-DBOOST_BIND_GLOBAL_PLACEHOLDERS', '-D_ISOC9X_SOURCE',
         '-D_LARGEFILE64_SOURCE', '-D_FILE_OFFSET_BITS=64'))
    cxx_flags.extend(
        ('-D__STDC_LIMIT_MACROS', '-D__STDC_FORMAT_MACROS',
         '-DCANVAS_DEBUG'))

    # Do not use Boost.System library
    cxx_flags.append('-DBOOST_ERROR_CODE_HEADER_ONLY')

    # use sparingly, prefer runtime profile
    if Options.options.program_name.lower().startswith('mixbus'):
        compiler_flags.append ('-DMIXBUS')
        conf.define('MIXBUS', 1)

    if Options.options.program_name.lower() == "mixbus32c":
        conf.define('MIXBUS32C', 1)
        compiler_flags.append ('-DMIXBUS32C')

    compiler_flags.append ('-DPROGRAM_NAME="' + Options.options.program_name + '"')
    compiler_flags.append ('-DPROGRAM_VERSION="' + PROGRAM_VERSION + '"')

    if opt.debug:
        conf.env.append_value('CFLAGS', debug_flags)
        conf.env.append_value('CXXFLAGS', debug_flags)
    else:
        conf.env.append_value('CFLAGS', optimization_flags)
        conf.env.append_value('CXXFLAGS', optimization_flags)

    if opt.backtrace:
        if platform != 'darwin' and not is_clang and not Options.options.dist_target == 'mingw':
            linker_flags += [ '-rdynamic' ]

    if opt.gprofile:
        linker_flags += [ flags_dict['gprofile'] ]

    conf.env.append_value('CFLAGS', compiler_flags)
    conf.env.append_value('CFLAGS', c_flags)
    conf.env.append_value('CXXFLAGS', compiler_flags)
    conf.env.append_value('CXXFLAGS', cxx_flags)
    conf.env.append_value('LINKFLAGS', linker_flags)

def create_resource_file(name):
    try:
        text = 'IDI_ICON1 ICON DISCARDABLE "icons/' + name + '.ico"\n'
        o = open('gtk2_ardour/windows_icon.rc', 'w')
        o.write(text)
        o.close()
    except IOError:
        print('Could not open gtk2_ardour/windows_icon.rc for writing\n')
        sys.exit(-1)

#----------------------------------------------------------------

# Waf stages

def options(opt):
    opt.load('compiler_c')
    opt.load('compiler_cxx')
    autowaf.set_options(opt, debug_by_default=True)
    opt.add_option('--program-name', type='string', action='store', default='Ardour', dest='program_name',
                    help='The user-visible name of the program being built')
    opt.add_option('--arch', type='string', action='store', dest='arch',
                    help='Architecture-specific compiler FLAGS')
    opt.add_option('--with-backends', type='string', action='store', default='', dest='with_backends',
                    help='Specify which backend modules are to be included(jack,alsa,portaudio,coreaudio,pulseaudio)')
    opt.add_option('--backtrace', action='store_true', default=False, dest='backtrace',
                    help='Compile with -rdynamic -- allow obtaining backtraces from within Ardour')
    opt.add_option('--no-carbon', action='store_true', default=False, dest='nocarbon',
                    help='Compile without support for AU Plugins with only CARBON UI (needed for 64bit)')
    opt.add_option('--compile-database', action='store_true', default=False, dest='clang_compile_db',
                    help='Enable clang_compilation_database to write compile_commands.json prior to build')
    opt.add_option('--boost-sp-debug', action='store_true', default=False, dest='boost_sp_debug',
                    help='Compile with Boost shared pointer debugging')
    opt.add_option('--debug-symbols', action='store_true', default=False, dest='debug_symbols',
                    help='Add debug-symbols to optimized builds')
    opt.add_option('--depstack-root', type='string', default='~', dest='depstack_root',
                    help='Directory/folder where dependency stack trees (gtk, a3) can be found (defaults to ~)')
    opt.add_option('--dist-target', type='string', default='auto', dest='dist_target',
                    help='Specify the target for cross-compiling [auto,none,x86,i386,i686,x86_64,tiger,leopard,mingw,msvc]')
    opt.add_option('--no-dr-mingw', action='store_true', default=False, dest='no_drmingw',
                    help='Do not write crashdumps using Dr.Mingw (Windows ONLY)')
    opt.add_option('--no-fpu-optimization', action='store_true', default=False, dest='no_fpu_optimization',
                    help='Build without runtime checked assembler code')
    opt.add_option('--exports-hidden', action='store_true', default=False, dest='exports_hidden')
    opt.add_option('--freedesktop', action='store_true', default=False, dest='freedesktop',
                    help='Build MIME type and .desktop files as per freedesktop.org standards (will be placed in build/gtk2_ardour)')
    opt.add_option('--freebie', action='store_true', default=False, dest='freebie',
                    help='Build a version suitable for distribution as a zero-cost binary')
    opt.add_option('--profile', action='store_true', default=False, dest='profile',
                    help='Compile for use with profiling tools requiring a frame pointer')
    opt.add_option('--gtk-debug', action='store_true', default=False, dest='gdebug',
                    help='Enable g/ytk debug mode (G_ENABLE_DEBUG)')
    opt.add_option('--gprofile', action='store_true', default=False, dest='gprofile',
                    help='Compile for use with gprofile')
    opt.add_option('--libjack', type='string', default="auto", dest='libjack_link',
                    help='libjack link mode  [auto|link|weak]')
    opt.add_option('--internal-shared-libs', action='store_true', default=True, dest='internal_shared_libs',
                   help='Build internal libs as shared libraries')
    opt.add_option('--internal-static-libs', action='store_false', dest='internal_shared_libs',
                   help='Build internal libs as static libraries')
    opt.add_option('--use-external-libs', action='store_true', default=False, dest='use_external_libs',
                   help='Use external/system versions of some bundled libraries')
    opt.add_option('--keepflags', action='store_true', default=False, dest='keepflags',
                    help='Do not ignore CFLAGS/CXXFLAGS environment vars')
    opt.add_option('--luadoc', action='store_true', default=False, dest='luadoc',
                    help='Compile Tool to dump LuaBindings (needs C++11)')
    opt.add_option('--canvasui', action='store_true', default=False, dest='canvasui',
                    help='Compile libcanvas test GUI')
    opt.add_option('--beatbox', action='store_true', default=False, dest='beatbox',
                    help='Compile beatbox test app')
    opt.add_option('--lv2dir', type='string', help="install destination for builtin LV2 bundles [Default: LIBDIR/lv2]")
    opt.add_option('--no-lxvst', action='store_true', default=False, dest='no_lxvst',
                    help='Compile without support for linuxVST plugins')
    opt.add_option('--no-vst3', action='store_true', default=False, dest='no_vst3',
                    help='Compile without support for VST3 plugins')
    opt.add_option('--no-lrdf', action='store_true', dest='no_lrdf',
                    help='Compile without support for LRDF LADSPA data even if present')
    opt.add_option('--no-nls', action='store_true', default=False, dest='no_nls',
                    help='Disable i18n (native language support)')
    opt.add_option('--no-phone-home', action='store_true', default=False, dest='no_phone_home',
                   help='Do not contact ardour.org at startup for new announcements')
    opt.add_option('--stl-debug', action='store_true', default=False, dest='stl_debug',
                    help='Build with debugging for the STL')
    opt.add_option('--rt-alloc-debug', action='store_true', default=False, dest='rt_alloc_debug',
                    help='Build with debugging for memory allocation in the real-time thread')
    opt.add_option('--pt-timing', action='store_true', default=False, dest='pt_timing',
                    help='Build with logging of timing in the process thread(s)')
    opt.add_option('--denormal-exception', action='store_true', default=False, dest='denormal_exception',
                    help='Raise a floating point exception if a denormal is detected')
    opt.add_option('--test', action='store_true', default=False, dest='build_tests',
                    help="Build unit tests")
    opt.add_option('--run-tests', action='store_true', default=False, dest='run_tests',
                    help="Run tests after build")
    opt.add_option('--single-tests', action='store_true', default=False, dest='single_tests',
                    help="Build a single executable for each unit test")
    opt.add_option('--maschine', action='store_true', default=False, dest='maschine',
                    help='Compile with support for NI-Maschine')
    opt.add_option('--generic', action='store_true', default=False, dest='generic',
                    help='Compile with -arch i386 (OS X ONLY)')
    opt.add_option('--ppc', action='store_true', default=False, dest='ppc',
                    help='Compile with -arch ppc (OS X ONLY)')
    opt.add_option('--arm64', action='store_true', default=False, dest='arm64',
                    help='Compile with -arch arm64 (macOS ONLY)')
    opt.add_option('--versioned', action='store_true', default=False, dest='versioned',
                    help='Add revision information to executable name inside the build directory')
    opt.add_option('--no-windows-vst', action='store_true', default=False, dest='no_windows_vst',
                    help='Compile without support for Windows VST (Windows ONLY)')
    opt.add_option('--windows-key', type='string', action='store', dest='windows_key', default='Mod4><Super',
                    help='X Modifier(s) (Mod1,Mod2, etc) for the Windows key (X11 builds only). ' +
                    'Multiple modifiers must be separated by \'><\'')
    opt.add_option('--boost-include', type='string', action='store', dest='boost_include', default='',
                    help='Directory where Boost header files can be found')
    opt.add_option('--also-include', type='string', action='store', dest='also_include', default='',
                    help='Additional include directory where header files can be found (split multiples with commas)')
    opt.add_option('--also-libdir', type='string', action='store', dest='also_libdir', default='',
                    help='Additional include directory where shared libraries can be found (split multiples with commas)')
    opt.add_option('--noconfirm', action='store_true', default=False, dest='noconfirm',
                    help='Do not ask questions that require confirmation during the build')
    opt.add_option('--cxx17', action='store_true', default=False, dest='cxx17',
                    help='Turn on c++17 compiler flags (-std=c++17)')
    opt.add_option('--use-libc++', action='store_true', default=False, dest='use_libcpp',
                    help='Use libc++ instead of default or auto-detected stdlib')
    opt.add_option('--address-sanitizer', action='store_true', default=False, dest='asan',
                    help='Turn on AddressSanitizer (requires GCC >= 4.8 or clang >= 3.1)')
    opt.add_option('--thread-sanitizer', action='store_true', default=False, dest='tsan',
                    help='Turn on ThreadSanitizer (requires GCC >= 4.8 or clang, and 64bit CPU)')
    opt.add_option('--ptformat', action='store_true', default=False, dest='ptformat',
                    help='Enable support to import PTS/PTF/PTX sessions')
    opt.add_option('--no-threaded-waveviews', action='store_true', default=False, dest='no_threaded_waveviews',
                    help='Disable threaded waveview rendering')
    opt.add_option('--no-futex-semaphore', action='store_true', default=False, dest='no_futex_semaphore',
                    help='Disable use of futex for semaphores (Linux only)')
    opt.add_option('--no-ytk', action='store_true', default=False, dest='no_ytk',
                   help='Use system-wide GTK instead of Ardour YTK')
    opt.add_option(
        '--qm-dsp-include', type='string', action='store',
        dest='qm_dsp_include', default='/usr/include/qm-dsp',
        help='Directory where the header files of qm-dsp can be found')
    opt.add_option ('--use-lld', action='store_true', default=False, dest='use_lld', help='Use LLD linker instead of ld (Linux only)')

    for i in children:
        opt.recurse(i)

def sub_config_and_use(conf, name, has_objects = True):
    conf.recurse(name)
    autowaf.set_local_lib(conf, name, has_objects)

def configure(conf):
    set_version ()
    conf.load('compiler_c')
    conf.load('compiler_cxx')
    if Options.options.dist_target == 'mingw':
        conf.load('winres')
    elif Options.options.clang_compile_db:
        conf.load('clang_compilation_database')

    if Options.options.dist_target == 'msvc':
        conf.env['MSVC_VERSIONS'] = ['msvc 10.0', 'msvc 9.0', 'msvc 8.0', 'msvc 7.1', 'msvc 7.0', 'msvc 6.0', ]
        conf.env['MSVC_TARGETS'] = ['x64']
        conf.load('msvc')

    if Options.options.debug and not Options.options.keepflags:
        # Nuke user CFLAGS/CXXFLAGS if debug is set (they likely contain -O3, NDEBUG, etc)
        conf.env['CFLAGS'] = []
        conf.env['CXXFLAGS'] = []

    # freedesktop translations needs itstool > 1.0.3 (-j option)
    if Options.options.freedesktop:
        output = subprocess.Popen("itstool --version", shell=True, stderr=subprocess.DEVNULL, stdout=subprocess.PIPE).communicate()[0].splitlines()
        o = output[0].decode('utf-8')
        itstool = o.split(' ')[0]
        version = o.split(' ')[1].split('.')
        # use  distutils.version.StrictVersion  or something python to check >= 1.0.4
        # but first make sure that all build-hosts (incl. OSX-10.5/PPC) have that python lib.
        # lazy approach: just use major version 2.X.X
        if itstool != "itstool" or version[0] < "2":
            conf.fatal("--freedesktop requires itstool > 2.0.0 to translate files.")

    conf.env['PROGRAM_NAME'] = Options.options.program_name or 'Ardour'

    conf.env['VERSION'] = VERSION
    conf.env['MAJOR'] = MAJOR
    conf.env['MINOR'] = MINOR
    conf.env['MICRO'] = MICRO
    conf.line_just = 52
    autowaf.set_recursive()
    autowaf.configure(conf)
    autowaf.display_header('Ardour Configuration')

    # systems with glibc have libintl builtin. systems without require explicit
    # linkage against libintl.
    #

    pkg_config_path = os.getenv('PKG_CONFIG_PATH')
    user_gtk_root = os.path.expanduser (Options.options.depstack_root + '/gtk/inst')

    if os.getenv('DEPSTACK_ROOT') is not None and os.path.exists (os.getenv('DEPSTACK_ROOT') + '/lib'):
        conf.env['DEPSTACK_REV'] = get_depstack_rev (os.getenv('DEPSTACK_ROOT') + '/lib')
    elif pkg_config_path is not None and pkg_config_path.find (user_gtk_root) >= 0:
        # told to search user_gtk_root
        prefinclude = ''.join ([ '-I', user_gtk_root + '/include'])
        preflib = ''.join ([ '-L', user_gtk_root + '/lib'])
        conf.env.append_value('CFLAGS', [ prefinclude ])
        conf.env.append_value('CXXFLAGS',  [prefinclude ])
        conf.env.append_value('LINKFLAGS', [ preflib ])
        autowaf.display_msg(conf, 'Will build against private GTK dependency stack in ' + user_gtk_root, 'yes')
        conf.env['DEPSTACK_REV'] = get_depstack_rev (user_gtk_root)
    else:
        autowaf.display_msg(conf, 'Will build against private GTK dependency stack', 'no')
        conf.env['DEPSTACK_REV'] = '-system-'

    if sys.platform == 'darwin':
        conf.define ('NEED_INTL', 1)
        autowaf.display_msg(conf, 'Will use explicit linkage against libintl in ' + user_gtk_root, 'yes')
    else:
        # libintl is part of the system, so use it
        autowaf.display_msg(conf, 'Will rely on libintl built into libc', 'yes')

    user_ardour_root = os.path.expanduser (Options.options.depstack_root + '/a3/inst')
    if pkg_config_path is not None and pkg_config_path.find (user_ardour_root) >= 0:
        # told to search user_ardour_root
        prefinclude = ''.join ([ '-I', user_ardour_root + '/include'])
        preflib = ''.join ([ '-L', user_ardour_root + '/lib'])
        conf.env.append_value('CFLAGS', [ prefinclude ])
        conf.env.append_value('CXXFLAGS',  [prefinclude ])
        conf.env.append_value('LINKFLAGS', [ preflib ])
        autowaf.display_msg(conf, 'Will build against private Ardour dependency stack in ' + user_ardour_root, 'yes')
    else:
        autowaf.display_msg(conf, 'Will build against private Ardour dependency stack', 'no')

    if Options.options.freebie:
        conf.env.append_value ('CFLAGS', '-DSILENCE_AFTER')
        conf.env.append_value ('CXXFLAGS', '-DSILENCE_AFTER')
        conf.define ('FREEBIE', 1)

    # set explicit LIBDIR, otherwise mingw/windows builds use
    # conf.env.LIBDIR = conf.env.BINDIR and `waf install` fails
    # because $BINDIR/ardour6 is the main binary, and $LIBDIR/ardour6/ a directory
    if Options.options.libdir:
        conf.env.LIBDIR = Options.options.libdir

    if Options.options.lv2dir:
        conf.env['LV2DIR'] = Options.options.lv2dir
    else:
        conf.env['LV2DIR'] = os.path.join(conf.env['LIBDIR'], 'ardour' + conf.env['MAJOR'], 'LV2')

    conf.env['LV2DIR'] = os.path.normpath(conf.env['LV2DIR'])

    if sys.platform == 'darwin':

        # this is required, potentially, for anything we link and then relocate into a bundle
        conf.env.append_value('LINKFLAGS', [ '-Xlinker', '-headerpad_max_install_names' ])

        conf.define ('HAVE_COREAUDIO', 1)
        conf.define ('AUDIOUNIT_SUPPORT', 1)

        if not Options.options.ppc:
            conf.define('MACVST_SUPPORT', 1)

        conf.define ('TOP_MENUBAR',1)

        # It would be nice to be able to use this to force back-compatibility with 10.4
        # but even by the time of 11, the 10.4 SDK is no longer available in any normal
        # way.
        #
        #conf.env.append_value('CXXFLAGS_OSX', "-isysroot /Developer/SDKs/MacOSX10.4u.sdk")
        #conf.env.append_value('CFLAGS_OSX', "-isysroot /Developer/SDKs/MacOSX10.4u.sdk")
        #conf.env.append_value('LINKFLAGS_OSX', "-sysroot /Developer/SDKs/MacOSX10.4u.sdk")
        #conf.env.append_value('LINKFLAGS_OSX', "-sysroot /Developer/SDKs/MacOSX10.4u.sdk")

        conf.env.append_value('CXXFLAGS_OSX', "-msse")
        conf.env.append_value('CFLAGS_OSX', "-msse")
        conf.env.append_value('CXXFLAGS_OSX', "-msse2")
        conf.env.append_value('CFLAGS_OSX', "-msse2")
        #
        #       TODO: The previous sse flags NEED to be based
        #       off processor type.  Need to add in a check
        #       for that.
        #
        conf.env.append_value('LINKFLAGS_OSX', ['-framework', 'AppKit'])
        conf.env.append_value('LINKFLAGS_OSX', ['-framework', 'CoreAudio'])
        conf.env.append_value('LINKFLAGS_OSX', ['-framework', 'CoreAudioKit'])
        conf.env.append_value('LINKFLAGS_OSX', ['-framework', 'CoreFoundation'])
        conf.env.append_value('LINKFLAGS_OSX', ['-framework', 'CoreServices'])

        conf.env.append_value('LINKFLAGS_OSX', ['-undefined', 'dynamic_lookup' ])
        conf.env.append_value('LINKFLAGS_OSX', ['-flat_namespace'])

        conf.env.append_value('CXXFLAGS_AUDIOUNITS', "-DAUDIOUNIT_SUPPORT")
        conf.env.append_value('LINKFLAGS_AUDIOUNITS', ['-framework', 'AudioToolbox', '-framework', 'AudioUnit'])
        conf.env.append_value('LINKFLAGS_AUDIOUNITS', ['-framework', 'Cocoa'])

        # use image surface for rendering
        conf.env.append_value('CFLAGS', '-DUSE_CAIRO_IMAGE_SURFACE')
        conf.env.append_value('CXXFLAGS', '-DUSE_CAIRO_IMAGE_SURFACE')

        if (
                # osx up to and including 10.6 (uname 10.X.X)
                (re.search (r"^[1-9][0-9]\.", os.uname()[2]) is None or not re.search (r"^10\.", os.uname()[2]) is None)
                and (Options.options.generic or Options.options.ppc)
                and not Options.options.nocarbon
           ):
            conf.env.append_value('CXXFLAGS_AUDIOUNITS', "-DWITH_CARBON")
            conf.env.append_value('LINKFLAGS_AUDIOUNITS', ['-framework', 'Carbon'])
        else:
            print ('No Carbon support available for this build\n')

    if Options.options.canvasui:
        conf.env['CANVASTESTUI'] = True
        conf.define ('CANVASTESTUI', 1)

    if Options.options.beatbox:
        conf.env['BEATBOX'] = True
        conf.define ('BEATBOX', 1)

    if Options.options.luadoc:
        conf.env['LUABINDINGDOC'] = True
        conf.define ('LUABINDINGDOC', 1)

    if Options.options.internal_shared_libs:
        conf.define('INTERNAL_SHARED_LIBS', 1)

    if not Options.options.no_ytk:
        conf.define('YTK', 1)
        conf.define('HAVE_SUIL', 1)
    else:
        autowaf.check_pkg(conf, 'suil-0', uselib_store='SUIL', atleast_version='0.6.0', mandatory=False)

    if Options.options.use_external_libs:
        conf.define('USE_EXTERNAL_LIBS', 1)
        conf.env.append_value(
            'CXXFLAGS', '-I' + Options.options.qm_dsp_include)

    if Options.options.boost_include != '':
        conf.env.append_value('CXXFLAGS', '-I' + Options.options.boost_include)

    if Options.options.also_include != '':
        conf.env.append_value('CXXFLAGS', '-I' + Options.options.also_include)
        conf.env.append_value('CFLAGS', '-I' + Options.options.also_include)

    if Options.options.also_libdir != '':
        conf.env.append_value('LDFLAGS', '-L' + Options.options.also_libdir)

    if Options.options.boost_sp_debug:
        conf.env.append_value('CXXFLAGS', '-DBOOST_SP_ENABLE_DEBUG_HOOKS')
        conf.env.append_value('CXXFLAGS', '-DBOOST_NO_CXX11_CONSTEXPR')

    # executing a test program is n/a when cross-compiling
    if Options.options.dist_target != 'mingw':
        if Options.options.dist_target != 'msvc' and re.search ("(open|net)bsd", sys.platform) is None:
            if re.search ("freebsd", sys.platform) is not None:
                conf.check_cc(
                        msg="Checking for function 'dlopen' in dlfcn.h",
                        fragment = "#include <dlfcn.h>\n int main(void) { dlopen (\"\", 0); return 0;}\n",
                        uselib_store='DL', execute = False)
            else:
                conf.check_cc(
                        msg="Checking for function 'dlopen' in dlfcn.h",
                        fragment = "#include <dlfcn.h>\n int main(void) { dlopen (\"\", 0); return 0;}\n",
                        lib='dl', uselib_store='DL', execute = False)

    conf.check_cxx(fragment = "#include <boost/version.hpp>\n#if !defined (BOOST_VERSION) || BOOST_VERSION < 106800\n#error boost >= 1.68 is not available\n#endif\nint main(void) { return 0; }\n",
              execute = False,
              mandatory = True,
              msg = 'Checking for boost library >= 1.68')

    if re.search ("linux", sys.platform) is not None and Options.options.dist_target != 'mingw':
        autowaf.check_pkg(conf, 'alsa', uselib_store='ALSA')

    if re.search ("linux", sys.platform) is not None and Options.options.dist_target != 'mingw':
        autowaf.check_pkg(conf, 'libpulse', uselib_store='PULSEAUDIO', mandatory=False)

    if re.search ("openbsd", sys.platform) is not None:
        conf.env.append_value('LDFLAGS', '-L/usr/X11R6/lib')

    autowaf.check_pkg(conf, 'glib-2.0', uselib_store='GLIB', atleast_version='2.28', mandatory=True)
    autowaf.check_pkg(conf, 'gthread-2.0', uselib_store='GTHREAD', atleast_version='2.2', mandatory=True)
    autowaf.check_pkg(conf, 'glibmm-2.4', uselib_store='GLIBMM', atleast_version='2.32.0', mandatory=True)
    autowaf.check_pkg(conf, 'sndfile', uselib_store='SNDFILE', atleast_version='1.0.18', mandatory=True)
    autowaf.check_pkg(conf, 'giomm-2.4', uselib_store='GIOMM', atleast_version='2.2', mandatory=True)
    autowaf.check_pkg(conf, 'libcurl', uselib_store='CURL', atleast_version='7.0.0', mandatory=True)
    autowaf.check_pkg(conf, 'libarchive', uselib_store='ARCHIVE', atleast_version='3.0.0', mandatory=True)
    autowaf.check_pkg(conf, 'liblo', uselib_store='LO', atleast_version='0.26', mandatory=True)
    autowaf.check_pkg(conf, 'taglib', uselib_store='TAGLIB', atleast_version='1.9', mandatory=True)
    autowaf.check_pkg(conf, 'vamp-sdk', uselib_store='VAMPSDK', atleast_version='2.1', mandatory=True)
    autowaf.check_pkg(conf, 'vamp-hostsdk', uselib_store='VAMPHOSTSDK', atleast_version='2.1', mandatory=True)
    autowaf.check_pkg(conf, 'rubberband', uselib_store='RUBBERBAND', mandatory=True)

    autowaf.check_pkg(conf, 'libusb-1.0', uselib_store='USB', atleast_version='1.0.16', mandatory=False)

    # we cannot rely on pkg-config - https://lists.linuxaudio.org/archives/linux-audio-dev/2022-July/038395.html
    conf.check_cc(
                  features  = 'cxx',
                  mandatory = False,
                  execute   = False,
                  msg       = 'Checking for rubberband >= 3.0.0',
                  use       = 'RUBBERBAND',
                  define_name= 'HAVE_RUBBERBAND_3_0_0',
    fragment = '''
#include <rubberband/RubberBandStretcher.h>
#if RUBBERBAND_API_MAJOR_VERSION >= 2 && RUBBERBAND_API_MINOR_VERSION >= 7
int main () { return 0; }
#else
#error
#endif
''')

    have_rf64_riff_support = conf.check_cc(fragment = '''
#include <sndfile.h>
int main () { int x = SFC_RF64_AUTO_DOWNGRADE; return 0; }
''',
                                           features  = 'c',
                                           mandatory = False,
                                           execute   = False,
                                           use = 'SNDFILE',
                                           msg       = 'Checking for sndfile RF64=>RIFF support',
                                           okmsg = 'Found',
                                           errmsg = 'Not found, no RF64-to-WAV support')

    if have_rf64_riff_support:
        conf.env.append_value('CXXFLAGS', "-DHAVE_RF64_RIFF")
        conf.env.append_value('CFLAGS', "-DHAVE_RF64_RIFF")

    if Options.options.dist_target == 'mingw':
        Options.options.no_fpu_optimization = False
        conf.env.append_value('CFLAGS', '-DPLATFORM_WINDOWS')
        conf.env.append_value('CFLAGS', '-DCOMPILER_MINGW')
        conf.env.append_value('CXXFLAGS', '-DPLATFORM_WINDOWS')
        conf.env.append_value('CXXFLAGS', '-DCOMPILER_MINGW')
        if conf.options.cxx17:
            conf.env.append_value('CFLAGS', '-D_USE_MATH_DEFINES')
            conf.env.append_value('CXXFLAGS', '-D_USE_MATH_DEFINES')
            conf.env.append_value('CFLAGS', '-DWIN32')
            conf.env.append_value('CXXFLAGS', '-DWIN32')
        conf.env.append_value('LIB', 'pthread')
        # needed for at least libsmf
        conf.check_cc(function_name='htonl', header_name='winsock2.h', lib='ws2_32')
        conf.env.append_value('LIB', 'ws2_32')
        conf.env.append_value('LIB', 'winmm')
        if Options.options.program_name.lower().startswith('mixbus'):
            conf.env.append_value('LIB', 'ole32')
            conf.env.append_value('LIB', 'uuid')
        # needed for mingw64 packages, not harmful on normal mingw build
        conf.env.append_value('LIB', 'intl')
        conf.check_cc(function_name='regcomp', header_name='regex.h',
                      lib='regex', uselib_store="REGEX", define_name='HAVE_REGEX_H')
        # TODO put this only where it is needed
        conf.env.append_value('LIB', 'regex')
        # TODO this should only be necessary for a debug build
        conf.env.append_value('LIB', 'dbghelp')

        # work around GdkDrawable BitBlt performance issue on windows
        # see http://gareus.org/wiki/ardour_windows_gdk_and_cairo
        conf.env.append_value('CFLAGS', '-DUSE_CAIRO_IMAGE_SURFACE')
        conf.env.append_value('CXXFLAGS', '-DUSE_CAIRO_IMAGE_SURFACE')
        conf.define ('WINDOWS', 1)

        have_ptw_semaphore = conf.check_cc(fragment = '''
#include <pthread.h>
#include <semaphore.h>
int main () { return 0; }
''',
                                           features  = 'c',
                                           mandatory = False,
                                           execute   = False,
                                           msg       = 'Checking for pthread posix semaphore',
                                           okmsg     = 'Found',
                                           errmsg    = 'Not found, falling back to Windows Semaphore.')

        #if have_ptw_semaphore:
        #    conf.define('USE_PTW32_SEMAPHORE', 1)
        #    conf.env.append_value('CFLAGS', '-DUSE_PTW32_SEMAPHORE')
        #    conf.env.append_value('CXXFLAGS', '-DUSE_PTW32_SEMAPHORE')

    if Options.options.dist_target == 'msvc':
        conf.env.append_value('CFLAGS', '-DPLATFORM_WINDOWS')
        conf.env.append_value('CFLAGS', '-DCOMPILER_MSVC')
        conf.env.append_value('CXXFLAGS', '-DPLATFORM_WINDOWS')
        conf.env.append_value('CXXFLAGS', '-DCOMPILER_MSVC')
        # work around GdkDrawable BitBlt performance issue on windows
        # see http://gareus.org/wiki/ardour_windows_gdk_and_cairo
        conf.env.append_value('CFLAGS', '-DUSE_CAIRO_IMAGE_SURFACE')
        conf.env.append_value('CXXFLAGS', '-DUSE_CAIRO_IMAGE_SURFACE')
        # MORE STUFF PROBABLY NEEDED HERE
        conf.define ('WINDOWS', 1)

    have_int128_support = conf.check_cc(fragment = '''
int main () { __int128 x = 0; return 0; }
''',
                                           features  = 'c',
                                           mandatory = False,
                                           execute   = False,
                                           msg       = 'Checking for int128 support',
                                           okmsg = 'lots of bits found.',
                                           errmsg = 'Not found, no int128 support.')

    if have_int128_support:
        conf.env.append_value('CXXFLAGS', "-DCOMPILER_INT128_SUPPORT")
        conf.env.append_value('CFLAGS', "-DCOMPILER_INT128_SUPPORT")

    # Tell everyone that this is a waf build

    conf.env.append_value('CFLAGS', '-DWAF_BUILD')
    conf.env.append_value('CXXFLAGS', '-DWAF_BUILD')

    opts = Options.options

    # (optionally) Adopt Microsoft-like convention that makes all non-explicitly exported
    # symbols invisible (rather than doing this all over the wscripts in the src tree)
    #
    # This won't apply to MSVC but that hasn't been added as a target yet
    #
    # We can't do this till all tests are complete, since some fail if this is et.
    if opts.exports_hidden:
        conf.define ('EXPORT_VISIBILITY_HIDDEN', True)
        if opts.internal_shared_libs:
            conf.env.append_value ('CXXFLAGS', '-fvisibility=hidden')
            conf.env.append_value ('CFLAGS', '-fvisibility=hidden')
    else:
        conf.define ('EXPORT_VISIBILITY_HIDDEN', False)

    if Options.options.dist_target == 'mingw' and not opts.no_drmingw:
        conf.check_cc (function_name='ExcHndlInit', define_name='HAVE_DRMINGW', header_name='exchndl.h', lib=['exchndl', 'mgwhelp'], mandatory=True, uselib_store='DRMINGW')

    # Set up waf environment and C defines
    if not opts.no_phone_home:
        conf.define('PHONE_HOME', 1)
        conf.env['PHONE_HOME'] = True
    if not opts.no_fpu_optimization:
        conf.env['FPU_OPTIMIZATION'] = True
    if opts.freedesktop:
        conf.env['FREEDESKTOP'] = True
    if not opts.no_nls:
        conf.define('ENABLE_NLS', 1)
        conf.env['ENABLE_NLS'] = True
    else:
        conf.define('ENABLE_NLS', 0)
        conf.env['ENABLE_NLS'] = False
    if opts.build_tests:
        conf.env['BUILD_TESTS'] = True
        conf.env['RUN_TESTS'] = opts.run_tests
    if opts.single_tests:
        conf.env['SINGLE_TESTS'] = opts.single_tests
    if not opts.no_windows_vst:
        if Options.options.dist_target == 'mingw':
            conf.define('WINDOWS_VST_SUPPORT', 1)
            conf.env['WINDOWS_VST_SUPPORT'] = True
        else:
            conf.env['WINDOWS_VST_SUPPORT'] = False
    if not opts.no_lxvst:
        if sys.platform == 'darwin':
            conf.env['LXVST_SUPPORT'] = False
        elif Options.options.dist_target == 'mingw':
            conf.env['LXVST_SUPPORT'] = False
        else:
            conf.define('LXVST_SUPPORT', 1)
            conf.env['LXVST_SUPPORT'] = True
    if not opts.no_vst3:
        conf.define('VST3_SUPPORT', 1)
        conf.env['VST3_SUPPORT'] = True
    conf.env['WINDOWS_KEY'] = opts.windows_key
    if opts.rt_alloc_debug:
        conf.define('DEBUG_RT_ALLOC', 1)
        conf.env['DEBUG_RT_ALLOC'] = True
    if opts.pt_timing:
        conf.define('PT_TIMING', 1)
        conf.env['PT_TIMING'] = True
    if opts.denormal_exception:
        conf.define('DEBUG_DENORMAL_EXCEPTION', 1)
        conf.env['DEBUG_DENORMAL_EXCEPTION'] = True
    if opts.build_tests:
        autowaf.check_pkg(conf, 'cppunit', uselib_store='CPPUNIT', atleast_version='1.12.0', mandatory=True)
    if opts.ptformat:
        conf.define('PTFORMAT', 1)
        conf.env['PTFORMAT'] = True
    if opts.no_threaded_waveviews:
        conf.define('NO_THREADED_WAVEVIEWS', 1)
        conf.env['NO_THREADED_WAVEVIEWS'] = True
    if not opts.no_futex_semaphore:
        if re.search ("linux", sys.platform) is not None and Options.options.dist_target != 'mingw':
            have_sys_futex = conf.check_cc(
                    msg="Checking for 'futex' syscall support",
                    features  = 'c',
                    mandatory = False,
                    execute   = False,
                    fragment = "#include <sys/syscall.h>\n#include <linux/futex.h>\nint main () { int x = SYS_futex | FUTEX_WAKE_PRIVATE; return 0; }")

            if have_sys_futex:
                    conf.define('USE_FUTEX_SEMAPHORE', 1)
                    conf.env['USE_FUTEX_SEMAPHORE'] = True

    backends = opts.with_backends.split(',')

    if backends == ['']:
        backends = ['dummy']
        autowaf.check_pkg(conf, 'jack', uselib_store='JACK', atleast_version='0.121.0', mandatory=False)
        if conf.is_defined('HAVE_JACK'):
            backends += ['jack']
        if conf.is_defined('HAVE_PULSEAUDIO'):
            backends += ['pulseaudio']

        if re.search ("linux", sys.platform) is not None and Options.options.dist_target != 'mingw':
            backends += ['alsa']
        if sys.platform == 'darwin':
            backends += ['coreaudio']
        if Options.options.dist_target == 'mingw':
            backends += ['portaudio']

    if 'dummy' not in backends:
        backends += ['dummy']

    conf.env['BACKENDS'] = backends
    conf.env['BUILD_JACKBACKEND'] = any('jack' in b for b in backends)
    conf.env['BUILD_ALSABACKEND'] = any('alsa' in b for b in backends)
    conf.env['BUILD_DUMMYBACKEND'] = any('dummy' in b for b in backends)
    conf.env['BUILD_PABACKEND'] = any('portaudio' in b for b in backends)
    conf.env['BUILD_CORECRAPPITA'] = any('coreaudio' in b for b in backends)
    conf.env['BUILD_PULSEAUDIO'] = any('pulseaudio' in b for b in backends)

    if backends == [''] or not (
               conf.env['BUILD_JACKBACKEND']
            or conf.env['BUILD_ALSABACKEND']
            or conf.env['BUILD_DUMMYBACKEND']
            or conf.env['BUILD_PABACKEND']
            or conf.env['BUILD_CORECRAPPITA']
            or conf.env['BUILD_PULSEAUDIO']):
        conf.fatal("Must configure and build at least one backend")

    if (Options.options.use_lld):
        if re.search ("linux", sys.platform) is not None and Options.options.dist_target != 'mingw' and conf.env['BUILD_PABACKEND']:
            conf.fatal("lld is only for Linux builds")
        else:
            conf.find_program ('lld')
            conf.env.append_value('LINKFLAGS', '-fuse-ld=lld')

    if re.search ("linux", sys.platform) is not None and Options.options.dist_target != 'mingw' and conf.env['BUILD_PABACKEND']:
        conf.fatal("PortAudio Backend is not for Linux")

    if sys.platform != 'darwin' and conf.env['BUILD_CORECRAPPITA']:
        conf.fatal("Coreaudio backend is only available for OSX")

    if re.search ("linux", sys.platform) is None and conf.env['BUILD_ALSABACKEND']:
        conf.fatal("ALSA Backend is only available on Linux")

    if re.search ("linux", sys.platform) is None and conf.env['BUILD_PULSEAUDIO']:
        conf.fatal("PulseAudio Backend is only available on Linux")

    if conf.env['BUILD_PULSEAUDIO'] and not conf.is_defined('HAVE_PULSEAUDIO'):
        conf.fatal("PulseAudio Backend requires libpulse-dev")

    set_compiler_flags (conf, Options.options)

    if sys.platform == 'darwin':
        if conf.env['build_host'] in [ 'high_sierra' ]:
            conf.env.append_value('CXXFLAGS_OSX', '-F/System/Library/Frameworks')
        else:
            conf.env.append_value('CXXFLAGS_OSX', '-F/Library/Frameworks')

    if sys.platform == 'darwin':
        sub_config_and_use(conf, 'libs/appleutility')
    elif re.search ("openbsd", sys.platform) is not None:
        pass
    elif Options.options.dist_target != 'mingw':
        sub_config_and_use(conf, 'tools/sanity_check')

    # explicitly link against libm. This is possible on all POSIX systems
    # and required on Linux for symbol versioning and ABI compatibility
    if not (Options.options.dist_target == 'mingw' or Options.options.dist_target == 'msvc'):
        conf.env.append_value('LIB', 'm')

    for i in children:
        conf.recurse(i)

    # Fix utterly braindead FLAC include path to not smash assert.h
    conf.env['INCLUDES_FLAC'] = []

    if sys.platform == 'darwin':
        # override waf's -install_name added in
        # waflib/Tools/ccroot.py when -dynamiclib is used
        if conf.env.LINKFLAGS_cshlib:
            conf.env.LINKFLAGS_cshlib = []
            conf.env.LDFLAGS_cshlib = ['-dynamiclib']

        if conf.env.LINKFLAGS_cxxshlib:
            conf.env.LINKFLAGS_cxxshlib = []
            conf.env.LDFLAGS_cxxshlib = ['-dynamiclib']

    config_text = open('libs/ardour/config_text.cc', "w")
    config_text.write('''#include "ardour/ardour.h"
namespace ARDOUR {
const char* const ardour_config_info = "\\n\\
''')

    def write_config_text(title, val):
        autowaf.display_msg(conf, title, val)
        config_text.write(title + ': ')
        config_text.write(str(val).replace ('"', '\\"'))
        config_text.write("\\n\\\n")

    write_config_text('Build documentation',   conf.env['DOCS'])
    write_config_text('Debuggable build',      conf.env['DEBUG'])
    write_config_text('Export all symbols (backtrace)', opts.backtrace)
    write_config_text('Install prefix',        conf.env['PREFIX'])
    write_config_text('Strict compiler flags', conf.env['STRICT'])
    write_config_text('Internal Shared Libraries', conf.is_defined('INTERNAL_SHARED_LIBS'))
    write_config_text('Use YTK instead of GTK',    conf.is_defined('YTK'))
    write_config_text('Use External Libraries', conf.is_defined('USE_EXTERNAL_LIBS'))
    write_config_text('Library exports hidden', conf.is_defined('EXPORT_VISIBILITY_HIDDEN'))
    write_config_text('Free/Demo copy',        conf.is_defined('FREEBIE'))
    config_text.write("\\n\\\n")
    write_config_text('ALSA DBus Reservation', conf.is_defined('HAVE_DBUS'))
    write_config_text('Architecture flags',    opts.arch)
    write_config_text('ARM NEON support',      conf.is_defined('ARM_NEON_SUPPORT'))
    write_config_text('Aubio',                 conf.is_defined('HAVE_AUBIO'))
    write_config_text('AudioUnits',            conf.is_defined('AUDIOUNIT_SUPPORT'))
    write_config_text('Build target',          conf.env['build_target'])
    write_config_text('Canvas Test UI',        conf.is_defined('CANVASTESTUI'))
    write_config_text('Beatbox test app',      conf.is_defined('BEATBOX'))
    write_config_text('CoreAudio',             conf.is_defined('HAVE_COREAUDIO'))
    write_config_text('Debug RT allocations',  conf.is_defined('DEBUG_RT_ALLOC'))
    write_config_text('Debug Symbols',         conf.is_defined('debug_symbols') or conf.env['DEBUG'])
    write_config_text('Denormal exceptions',   conf.is_defined('DEBUG_DENORMAL_EXCEPTION'))
    write_config_text('Dr. Mingw',             conf.is_defined('HAVE_DRMINGW'))
    write_config_text('FLAC',                  conf.is_defined('HAVE_FLAC'))
    write_config_text('FPU optimization',      not opts.no_fpu_optimization)
    write_config_text('FPU AVX512F support',   conf.is_defined('FPU_AVX512F_SUPPORT'))
    write_config_text('FPU AVX/FMA support',   conf.is_defined('FPU_AVX_FMA_SUPPORT'))
    write_config_text('Futex Semaphore',       conf.is_defined('USE_FUTEX_SEMAPHORE'))
    write_config_text('Freedesktop files',     opts.freedesktop)
    write_config_text('G_ENABLE_DEBUG',        opts.gdebug or conf.env['DEBUG'])
    write_config_text('I/O Priorty Set',       conf.is_defined('HAVE_IOPRIO'))
    write_config_text('Libjack linking',       conf.env['libjack_link'])
    write_config_text('Libjack metadata',      conf.is_defined ('HAVE_JACK_METADATA'))
    write_config_text('Lua Binding Doc',       conf.is_defined('LUABINDINGDOC'))
    write_config_text('Lua Commandline Tool',  conf.is_defined('HAVE_READLINE'))
    write_config_text('LV2 UI embedding',      conf.is_defined('HAVE_SUIL'))
    write_config_text('LV2 support',           conf.is_defined('LV2_SUPPORT'))
    write_config_text('LV2 extensions',        conf.is_defined('LV2_EXTENDED'))
    write_config_text('LXVST support',         conf.is_defined('LXVST_SUPPORT'))
    write_config_text('Mac VST support',       conf.is_defined('MACVST_SUPPORT'))
    write_config_text('NI-Maschine',           opts.maschine)
    write_config_text('OGG',                   conf.is_defined('HAVE_OGG'))
    write_config_text('Phone home',            conf.is_defined('PHONE_HOME'))
    write_config_text('Process thread timing', conf.is_defined('PT_TIMING'))
    write_config_text('Program name',          opts.program_name)
    write_config_text('Samplerate',            conf.is_defined('HAVE_SAMPLERATE'))
    write_config_text('PT format',             conf.is_defined('PTFORMAT'))
    write_config_text('PTW32 Semaphore',       conf.is_defined('USE_PTW32_SEMAPHORE'))
#    write_config_text('Soundtouch',            conf.is_defined('HAVE_SOUNDTOUCH'))
    write_config_text('Threaded WaveViews',    not opts.no_threaded_waveviews)
    write_config_text('Translation',           not opts.no_nls)
    write_config_text('Unit tests',            conf.env['BUILD_TESTS'])
    write_config_text('Use LLD linker',        opts.use_lld)
    write_config_text('VST3 support',          conf.is_defined('VST3_SUPPORT'))
    write_config_text('Windows VST support',   conf.is_defined('WINDOWS_VST_SUPPORT'))
    write_config_text('Wiimote support',       conf.is_defined('BUILD_WIIMOTE'))
    write_config_text('Windows key',           opts.windows_key)
    config_text.write("\\n\\\n")
    write_config_text('PortAudio Backend',     conf.env['BUILD_PABACKEND'])
    write_config_text('CoreAudio/Midi Backend',conf.env['BUILD_CORECRAPPITA'])
    write_config_text('ALSA Backend',          conf.env['BUILD_ALSABACKEND'])
    write_config_text('Dummy backend',         conf.env['BUILD_DUMMYBACKEND'])
    write_config_text('JACK Backend',          conf.env['BUILD_JACKBACKEND'])
    write_config_text('PulseAudio Backend',    conf.env['BUILD_PULSEAUDIO'])
    config_text.write("\\n\\\n")
    write_config_text('Buildstack', conf.env['DEPSTACK_REV'])
    write_config_text('Mac i386 Architecture', opts.generic)
    write_config_text('Mac ppc Architecture',  opts.ppc)
    write_config_text('Mac arm64 Architecture',  opts.arm64)
    config_text.write("\\n\\\n")
    write_config_text('C compiler flags',      conf.env['CFLAGS'])
    write_config_text('C++ compiler flags',    conf.env['CXXFLAGS'])
    write_config_text('Linker flags',          conf.env['LINKFLAGS'])

    config_text.write ('";\n}\n')
    config_text.close ()
    print('')

    if Options.options.dist_target == 'mingw' or Options.options.dist_target == 'msvc':
        create_resource_file(Options.options.program_name)

def build(bld):
    if bld.is_install:
        set_version (True)
    else:
        create_stored_revision()

    bld.env['DATE'] = rev_date

    # add directories that contain only headers, to workaround an issue with waf

    if not bld.is_defined('USE_EXTERNAL_LIBS'):
        bld.path.find_dir ('libs/libltc/ltc')
    bld.path.find_dir ('libs/evoral/evoral')
    bld.path.find_dir ('libs/surfaces/control_protocol/control_protocol')
    bld.path.find_dir ('libs/temporal/temporal')
    bld.path.find_dir ('libs/gtkmm2ext/gtkmm2ext')
    bld.path.find_dir ('libs/ardour/ardour')
    bld.path.find_dir ('libs/pbd/pbd')

    #if bld.is_defined('YTK'):
    #    bld.path.find_dir ('libs/tk/ztkmm')

    # set up target directories
    lwrcase_dirname = 'ardour' + bld.env['MAJOR']

    # configuration files go here
    bld.env['CONFDIR'] = os.path.join(bld.env['SYSCONFDIR'], lwrcase_dirname)
    # data files loaded at run time go here
    bld.env['DATADIR'] = os.path.join(bld.env['DATADIR'], lwrcase_dirname)
    # shared objects loaded at runtime go here (two aliases)
    bld.env['DLLDIR'] = os.path.join(bld.env['LIBDIR'], lwrcase_dirname)
    bld.env['LIBDIR'] = bld.env['DLLDIR']
    bld.env['LOCALEDIR'] = os.path.join(bld.env['DATADIR'], 'locale')
    bld.env['lwrcase_dirname'] = lwrcase_dirname

    autowaf.set_recursive()

    if sys.platform == 'darwin':
        bld.recurse('libs/appleutility')
    elif re.search ("openbsd", sys.platform) is not None:
        pass
    elif bld.env['build_target'] != 'mingw':
        bld.recurse('tools/sanity_check')

        obj              = bld(features = 'subst')
        obj.source       = 'tools/avahi.sh'
        obj.target       = 'libs/ardour-avahi'
        obj.chmod        = Utils.O755
        obj.install_path = bld.env['LIBDIR']

    for i in children:
        bld.recurse(i)

    if bld.is_defined ('BEATBOX'):
        bld.recurse('tools/bb')

    bld.install_files (bld.env['CONFDIR'], 'system_config')

    bld.install_files (os.path.join (bld.env['DATADIR'], 'templates'), bld.path.ant_glob ('share/templates/**'), cwd=bld.path.find_dir ('share/templates'), relative_trick=True)
    bld.install_files (os.path.join (bld.env['DATADIR'], 'rdf'), bld.path.ant_glob ('share/rdf/*.n3'))

    if bld.env['RUN_TESTS']:
        bld.add_post_fun(test)

# The following i18n command implementations need a BuildContext (with .env),
# and we thus create BuildContext subclasses that define the `cmd` command to
# execute the `fun` function (which often will recurse).

class _i18n_build_context(BuildContext):
    cmd = 'i18n'
    fun = 'i18n_func'

def i18n_func(bld):
    bld.recurse (i18n_children)

class _i18n_pot_build_context(BuildContext):
    cmd = 'i18n_pot'
    fun = 'i18n_pot_func'

def i18n_pot_func(bld):
    bld.recurse (i18n_children)

class _i18n_po_build_context(BuildContext):
    cmd = 'i18n_po'
    fun = 'i18n_po_func'

def i18n_po_func(bld):
    bld.recurse (i18n_children)

class _i18n_mo_build_context(BuildContext):
    cmd = 'i18n_mo'
    fun = 'i18n_mo_func'

def i18n_mo_func(bld):
    bld.recurse (i18n_children)

def tarball(bld):
    create_stored_revision()

def test(bld):
    subprocess.call("gtk2_ardour/artest")

def help2man(bld):
    set_version ()
    cmd = "help2man -s 1 -N -o ardour.1 -n Ardour --version-string='Ardour %s' gtk2_ardour/ardev" % PROGRAM_VERSION
    subprocess.call(cmd, shell=True)