livetrax/SConstruct

# -*- python -*-

import os
import sys
import re
import shutil
import glob
import errno
import time
import platform
import string
import commands
from sets import Set
import SCons.Node.FS

SConsignFile()
EnsureSConsVersion(0, 96)

ardour_version = '2.1pre'

subst_dict = { }

#
# Command-line options
#

opts = Options('scache.conf')
opts.AddOptions(
    ('ARCH', 'Set architecture-specific compilation flags by hand (all flags as 1 argument)',''),
    BoolOption('AUDIOUNITS', 'Compile with Apple\'s AudioUnit library. (experimental)', 0),
    BoolOption('COREAUDIO', 'Compile with Apple\'s CoreAudio library', 0),
    BoolOption('DEBUG', 'Set to build with debugging information and no optimizations', 0),
    PathOption('DESTDIR', 'Set the intermediate install "prefix"', '/'),
    EnumOption('DIST_TARGET', 'Build target for cross compiling packagers', 'auto', allowed_values=('auto', 'i386', 'i686', 'x86_64', 'powerpc', 'tiger', 'panther', 'none' ), ignorecase=2),
    BoolOption('DMALLOC', 'Compile and link using the dmalloc library', 0),
    BoolOption('EXTRA_WARN', 'Compile with -Wextra, -ansi, and -pedantic.  Might break compilation.  For pedants', 0),
    BoolOption('FFT_ANALYSIS', 'Include FFT analysis window', 0),
    BoolOption('FPU_OPTIMIZATION', 'Build runtime checked assembler code', 1),
    BoolOption('LIBLO', 'Compile with support for liblo library', 1),
    BoolOption('NLS', 'Set to turn on i18n support', 1),
    PathOption('PREFIX', 'Set the install "prefix"', '/usr/local'),
    BoolOption('SURFACES', 'Build support for control surfaces', 1),
    BoolOption('SYSLIBS', 'USE AT YOUR OWN RISK: CANCELS ALL SUPPORT FROM ARDOUR AUTHORS: Use existing system versions of various libraries instead of internal ones', 0),
    BoolOption('UNIVERSAL', 'Compile as universal binary.  Requires that external libraries are already universal.', 0),
    BoolOption('VERSIONED', 'Add revision information to ardour/gtk executable name inside the build directory', 0),
    BoolOption('VST', 'Compile with support for VST', 0),
    BoolOption('GPROFILE', 'Compile with support for gprofile (Developers only)', 0),
    BoolOption('TRANZPORT', 'Compile with support for Frontier Designs (if libusb is available)', 1)
)

#----------------------------------------------------------------------
# a handy helper that provides a way to merge compile/link information
# from multiple different "environments"
#----------------------------------------------------------------------
#
class LibraryInfo(Environment):
    def __init__(self,*args,**kw):
        Environment.__init__ (self,*args,**kw)
    
    def Merge (self,others):
        for other in others:
            self.Append (LIBS = other.get ('LIBS',[]))
            self.Append (LIBPATH = other.get ('LIBPATH', []))
            self.Append (CPPPATH = other.get('CPPPATH', []))
            self.Append (LINKFLAGS = other.get('LINKFLAGS', []))
	self.Replace(LIBPATH = list(Set(self.get('LIBPATH', []))))
	self.Replace(CPPPATH = list(Set(self.get('CPPPATH',[]))))
        #doing LINKFLAGS breaks -framework
        #doing LIBS break link order dependency
    
    def ENV_update(self, src_ENV):
        for k in src_ENV.keys():
            if k in self['ENV'].keys() and k in [ 'PATH', 'LD_LIBRARY_PATH',
                                                  'LIB', 'INCLUDE' ]:
                self['ENV'][k]=SCons.Util.AppendPath(self['ENV'][k], src_ENV[k])
            else:
                self['ENV'][k]=src_ENV[k]

env = LibraryInfo (options = opts,
                   CPPPATH = [ '.' ],
                   VERSION = ardour_version,
                   TARBALL='ardour-' + ardour_version + '.tar.bz2',
                   DISTFILES = [ ],
                   DISTTREE  = '#ardour-' + ardour_version,
                   DISTCHECKDIR = '#ardour-' + ardour_version + '/check'
                   )

env.ENV_update(os.environ)

#----------------------------------------------------------------------
# Builders
#----------------------------------------------------------------------

# Handy subst-in-file builder
#

def do_subst_in_file(targetfile, sourcefile, dict):
    """Replace all instances of the keys of dict with their values.
    For example, if dict is {'%VERSION%': '1.2345', '%BASE%': 'MyProg'},
    then all instances of %VERSION% in the file will be replaced with 1.2345 etc.
    """
    try:
        f = open(sourcefile, 'rb')
        contents = f.read()
        f.close()
    except:
        raise SCons.Errors.UserError, "Can't read source file %s"%sourcefile
    for (k,v) in dict.items():
        contents = re.sub(k, v, contents)
    try:
        f = open(targetfile, 'wb')
        f.write(contents)
        f.close()
    except:
        raise SCons.Errors.UserError, "Can't write target file %s"%targetfile
    return 0 # success

def subst_in_file(target, source, env):
    if not env.has_key('SUBST_DICT'):
        raise SCons.Errors.UserError, "SubstInFile requires SUBST_DICT to be set."
    d = dict(env['SUBST_DICT']) # copy it
    for (k,v) in d.items():
        if callable(v):
            d[k] = env.subst(v())
        elif SCons.Util.is_String(v):
            d[k]=env.subst(v)
        else:
            raise SCons.Errors.UserError, "SubstInFile: key %s: %s must be a string or callable"%(k, repr(v))
    for (t,s) in zip(target, source):
        return do_subst_in_file(str(t), str(s), d)

def subst_in_file_string(target, source, env):
    """This is what gets printed on the console."""
    return '\n'.join(['Substituting vars from %s into %s'%(str(s), str(t))
                      for (t,s) in zip(target, source)])

def subst_emitter(target, source, env):
    """Add dependency from substituted SUBST_DICT to target.
    Returns original target, source tuple unchanged.
    """
    d = env['SUBST_DICT'].copy() # copy it
    for (k,v) in d.items():
        if callable(v):
            d[k] = env.subst(v())
        elif SCons.Util.is_String(v):
            d[k]=env.subst(v)
    Depends(target, SCons.Node.Python.Value(d))
    # Depends(target, source) # this doesn't help the install-sapphire-linux.sh problem
    return target, source

subst_action = Action (subst_in_file, subst_in_file_string)
env['BUILDERS']['SubstInFile'] = Builder(action=subst_action, emitter=subst_emitter)

#
# internationalization
#

# po_builder: builder function to copy po files to the parent directory while updating them
#
# first source:  .po file
# second source: .pot file
#

def po_builder(target,source,env):
    os.spawnvp (os.P_WAIT, 'cp', ['cp', str(source[0]), str(target[0])])
    args = [ 'msgmerge',
             '--update',
             str(target[0]),
             str(source[1])
             ]
    print 'Updating ' + str(target[0])
    return os.spawnvp (os.P_WAIT, 'msgmerge', args)

po_bld = Builder (action = po_builder)
env.Append(BUILDERS = {'PoBuild' : po_bld})

# mo_builder: builder function for (binary) message catalogs (.mo)
#
# first source:  .po file
#

def mo_builder(target,source,env):
    args = [ 'msgfmt',
             '-c',
             '-o',
             target[0].get_path(),
             source[0].get_path()
             ]
    return os.spawnvp (os.P_WAIT, 'msgfmt', args)

mo_bld = Builder (action = mo_builder)
env.Append(BUILDERS = {'MoBuild' : mo_bld})

# pot_builder: builder function for message templates (.pot)
#
# source: list of C/C++ etc. files to extract messages from
#

def pot_builder(target,source,env):
    args = [ 'xgettext',
             '--keyword=_',
             '--keyword=N_',
             '--from-code=UTF-8',
             '-o', target[0].get_path(),
             "--default-domain=" + env['PACKAGE'],
             '--copyright-holder="Paul Davis"' ]
    args += [ src.get_path() for src in source ]
    
    return os.spawnvp (os.P_WAIT, 'xgettext', args)

pot_bld = Builder (action = pot_builder)
env.Append(BUILDERS = {'PotBuild' : pot_bld})

#
# utility function, not a builder
#

def i18n (buildenv, sources, installenv):
    domain = buildenv['PACKAGE']
    potfile = buildenv['POTFILE']
    
    installenv.Alias ('potupdate', buildenv.PotBuild (potfile, sources))
    
    p_oze = [ os.path.basename (po) for po in glob.glob ('po/*.po') ]
    languages = [ po.replace ('.po', '') for po in p_oze ]
    
    for po_file in p_oze:
        buildenv.PoBuild(po_file, ['po/'+po_file, potfile])
        mo_file = po_file.replace (".po", ".mo")
        installenv.Alias ('install', buildenv.MoBuild (mo_file, po_file))
    
    for lang in languages:
        modir = (os.path.join (install_prefix, 'share/locale/' + lang + '/LC_MESSAGES/'))
        moname = domain + '.mo'
        installenv.Alias('install', installenv.InstallAs (os.path.join (modir, moname), lang + '.mo'))


def fetch_svn_revision (path):
    cmd = "LANG= "
    cmd += "svn info "
    cmd += path
    cmd += " | awk '/^Revision:/ { print $2}'"
    return commands.getoutput (cmd)

def create_stored_revision (target = None, source = None, env = None):
    if os.path.exists('.svn'):    
        rev = fetch_svn_revision ('.');
        try:
            text  = "#ifndef __ardour_svn_revision_h__\n"
            text += "#define __ardour_svn_revision_h__\n"
            text += "static const char* ardour_svn_revision = \"" + rev + "\";\n";
            text += "#endif\n"
            print '============> writing svn revision info to svn_revision.h\n'
            o = file ('svn_revision.h', 'w')
            o.write (text)
            o.close ()
        except IOError:
            print "Could not open svn_revision.h for writing\n"
            sys.exit (-1)
    else:
        print "You cannot use \"scons revision\" on without using a checked out"
        print "copy of the Ardour source code repository"
        sys.exit (-1)

#
# A generic builder for version.cc files
#
# note: requires that DOMAIN, MAJOR, MINOR, MICRO are set in the construction environment
# note: assumes one source files, the header that declares the version variables
#

def version_builder (target, source, env):

    text  = "int " + env['DOMAIN'] + "_major_version = " + str (env['MAJOR']) + ";\n"
    text += "int " + env['DOMAIN'] + "_minor_version = " + str (env['MINOR']) + ";\n"
    text += "int " + env['DOMAIN'] + "_micro_version = " + str (env['MICRO']) + ";\n"
    
    try:
        o = file (target[0].get_path(), 'w')
        o.write (text)
        o.close ()
    except IOError:
        print "Could not open", target[0].get_path(), " for writing\n"
        sys.exit (-1)

    text  = "#ifndef __" + env['DOMAIN'] + "_version_h__\n"
    text += "#define __" + env['DOMAIN'] + "_version_h__\n"
    text += "extern const char* " + env['DOMAIN'] + "_revision;\n"
    text += "extern int " + env['DOMAIN'] + "_major_version;\n"
    text += "extern int " + env['DOMAIN'] + "_minor_version;\n"
    text += "extern int " + env['DOMAIN'] + "_micro_version;\n"
    text += "#endif /* __" + env['DOMAIN'] + "_version_h__ */\n"
    
    try:
        o = file (target[1].get_path(), 'w')
        o.write (text)
        o.close ()
    except IOError:
        print "Could not open", target[1].get_path(), " for writing\n"
        sys.exit (-1)
        
    return None

version_bld = Builder (action = version_builder)
env.Append (BUILDERS = {'VersionBuild' : version_bld})

#
# a builder that makes a hard link from the 'source' executable to a name with
# a "build ID" based on the most recent CVS activity that might be reasonably
# related to version activity. this relies on the idea that the SConscript
# file that builds the executable is updated with new version info and committed
# to the source code repository whenever things change.
#

def versioned_builder(target,source,env):
    w, r = os.popen2( "LANG= svn info | awk '/^Revision:/ { print $2}'")
    
    last_revision = r.readline().strip()
    w.close()
    r.close()
    if last_revision == "":
        print "No SVN info found - versioned executable cannot be built"
        return -1
    
    print "The current build ID is " + last_revision
    
    tagged_executable = source[0].get_path() + '-' + last_revision
    
    if os.path.exists (tagged_executable):
        print "Replacing existing executable with the same build tag."
        os.unlink (tagged_executable)
    
    return os.link (source[0].get_path(), tagged_executable)

verbuild = Builder (action = versioned_builder)
env.Append (BUILDERS = {'VersionedExecutable' : verbuild})

#
# source tar file builder
#

def distcopy (target, source, env):
    treedir = str (target[0])
    
    try:
        os.mkdir (treedir)
    except OSError, (errnum, strerror):
        if errnum != errno.EEXIST:
            print 'mkdir ', treedir, ':', strerror
    
    cmd = 'tar cf - '
    #
    # we don't know what characters might be in the file names
    # so quote them all before passing them to the shell
    #
    all_files = ([ str(s) for s in source ])
    cmd += " ".join ([ "'%s'" % quoted for quoted in all_files])
    cmd += ' | (cd ' + treedir + ' && tar xf -)'
    p = os.popen (cmd)
    return p.close ()

def tarballer (target, source, env):
    cmd = 'tar -jcf ' + str (target[0]) +  ' ' + str(source[0]) + "  --exclude '*~'"
    print 'running ', cmd, ' ... '
    p = os.popen (cmd)
    return p.close ()

dist_bld = Builder (action = distcopy,
                    target_factory = SCons.Node.FS.default_fs.Entry,
                    source_factory = SCons.Node.FS.default_fs.Entry,
                    multi = 1)

tarball_bld = Builder (action = tarballer,
                       target_factory = SCons.Node.FS.default_fs.Entry,
                       source_factory = SCons.Node.FS.default_fs.Entry)

env.Append (BUILDERS = {'Distribute' : dist_bld})
env.Append (BUILDERS = {'Tarball' : tarball_bld})

#
# Make sure they know what they are doing
#

if env['VST']:
    if os.path.isfile('.personal_use_only'):
        print "Enabling VST support. Note that distributing a VST-enabled ardour\nis a violation of several different licences.\nBuild with VST=false if you intend to distribute ardour to others."
    else:
        sys.stdout.write ("Are you building Ardour for personal use (rather than distribution to others)? [no]: ")
        answer = sys.stdin.readline ()
        answer = answer.rstrip().strip()
        if answer == "yes" or answer == "y":
            fh = open('.personal_use_only', 'w')
            fh.close()
            print "OK, VST support will be enabled"
        else:
            print 'You cannot build Ardour with VST support for distribution to others.\nIt is a violation of several different licenses. Build with VST=false.'
            sys.exit (-1);
else:
    if os.path.isfile('.personal_use_only'):
        os.remove('.personal_use_only')


#######################
# Dependency Checking #
#######################

deps = \
{
	'glib-2.0'             : '2.10.1',
	'gthread-2.0'          : '2.10.1',
	'gtk+-2.0'             : '2.10.0',
	'libxml-2.0'           : '2.6.0',
	'samplerate'           : '0.1.0',
	'raptor'               : '1.4.2',
	'lrdf'                 : '0.4.0',
	'jack'                 : '0.101.1',
	'libgnomecanvas-2.0'   : '2.0',
        'cairo'                : '1.2.4'
}

def DependenciesRequiredMessage():
	print 'You do not have the necessary dependencies required to build ardour'
	print 'Please consult http://ardour.org/building for more information'

def CheckPKGConfig(context, version):
     context.Message( 'Checking for pkg-config version >= %s... ' %version )
     ret = context.TryAction('pkg-config --atleast-pkgconfig-version=%s' % version)[0]
     context.Result( ret )
     return ret

def CheckPKGVersion(context, name, version):
     context.Message( 'Checking for %s... ' % name )
     ret = context.TryAction('pkg-config --atleast-version=%s %s' %(version,name) )[0]
     context.Result( ret )
     return ret

conf = Configure(env, custom_tests = { 'CheckPKGConfig' : CheckPKGConfig,
                                       'CheckPKGVersion' : CheckPKGVersion })

# I think a more recent version is needed on win32
min_pkg_config_version = '0.8.0'

if not conf.CheckPKGConfig(min_pkg_config_version):
     print 'pkg-config >= %s not found.' % min_pkg_config_version
     Exit(1)

for pkg, version in deps.iteritems():
	if not conf.CheckPKGVersion( pkg, version ):
		print '%s >= %s not found.' %(pkg, version)
		DependenciesRequiredMessage()
		Exit(1)

env = conf.Finish()

# ----------------------------------------------------------------------
# Construction environment setup
# ----------------------------------------------------------------------

libraries = { }

libraries['core'] = LibraryInfo (CCFLAGS = '-Ilibs')

#libraries['sndfile'] = LibraryInfo()
#libraries['sndfile'].ParseConfig('pkg-config --cflags --libs sndfile')

libraries['lrdf'] = LibraryInfo()
libraries['lrdf'].ParseConfig('pkg-config --cflags --libs lrdf')

libraries['raptor'] = LibraryInfo()
libraries['raptor'].ParseConfig('pkg-config --cflags --libs raptor')

libraries['samplerate'] = LibraryInfo()
libraries['samplerate'].ParseConfig('pkg-config --cflags --libs samplerate')

if env['FFT_ANALYSIS']:
	libraries['fftw3f'] = LibraryInfo()
	libraries['fftw3f'].ParseConfig('pkg-config --cflags --libs fftw3f')
        #
        # Check for fftw3 header as well as the library
        conf = Configure (libraries['fftw3f'])
        if conf.CheckHeader ('fftw3.h') == False:
                print "FFT Analysis cannot be compiled without the FFTW3 headers, which don't seem to be installed"
                sys.exit (1)
        libraries['fftw3f'] = conf.Finish();

libraries['jack'] = LibraryInfo()
libraries['jack'].ParseConfig('pkg-config --cflags --libs jack')

libraries['xml'] = LibraryInfo()
libraries['xml'].ParseConfig('pkg-config --cflags --libs libxml-2.0')

libraries['xslt'] = LibraryInfo()
libraries['xslt'].ParseConfig('pkg-config --cflags --libs libxslt')

libraries['cairo'] = LibraryInfo()
libraries['cairo'].ParseConfig ('pkg-config --cflags --libs cairo')

libraries['pangocairo'] = LibraryInfo()
libraries['pangocairo'].ParseConfig ('pkg-config --cflags --libs pangocairo')

libraries['glib2'] = LibraryInfo()
libraries['glib2'].ParseConfig ('pkg-config --cflags --libs glib-2.0')
libraries['glib2'].ParseConfig ('pkg-config --cflags --libs gobject-2.0')
libraries['glib2'].ParseConfig ('pkg-config --cflags --libs gmodule-2.0')
libraries['glib2'].ParseConfig ('pkg-config --cflags --libs gthread-2.0')

libraries['gtk2'] = LibraryInfo()
libraries['gtk2'].ParseConfig ('pkg-config --cflags --libs gtk+-2.0')

libraries['gtk2-unix-print'] = LibraryInfo()
libraries['gtk2-unix-print'].ParseConfig ('pkg-config --cflags --libs gtk+-unix-print-2.0')

libraries['pango'] = LibraryInfo()
libraries['pango'].ParseConfig ('pkg-config --cflags --libs pango')

libraries['libgnomecanvas2'] = LibraryInfo()
libraries['libgnomecanvas2'].ParseConfig ('pkg-config --cflags --libs libgnomecanvas-2.0')

#libraries['flowcanvas'] = LibraryInfo(LIBS='flowcanvas', LIBPATH='#/libs/flowcanvas', CPPPATH='#libs/flowcanvas')

# The Ardour Control Protocol Library

libraries['ardour_cp'] = LibraryInfo (LIBS='ardour_cp', LIBPATH='#libs/surfaces/control_protocol',
                                      CPPPATH='#libs/surfaces/control_protocol')

# The Ardour backend/engine

libraries['ardour'] = LibraryInfo (LIBS='ardour', LIBPATH='#libs/ardour', CPPPATH='#libs/ardour')
libraries['midi++2'] = LibraryInfo (LIBS='midi++', LIBPATH='#libs/midi++2', CPPPATH='#libs/midi++2')
libraries['pbd']    = LibraryInfo (LIBS='pbd', LIBPATH='#libs/pbd', CPPPATH='#libs/pbd')
libraries['gtkmm2ext'] = LibraryInfo (LIBS='gtkmm2ext', LIBPATH='#libs/gtkmm2ext', CPPPATH='#libs/gtkmm2ext')


# SCons should really do this for us

conf = Configure (env)

have_cxx = conf.TryAction (Action (str(env['CXX']) + ' --version'))
if have_cxx[0] != 1:
    print "This system has no functional C++ compiler. You cannot build Ardour from source without one."
    sys.exit (1)
else:
    print "Congratulations, you have a functioning C++ compiler."

env = conf.Finish()


#
# Compiler flags and other system-dependent stuff
#

opt_flags = []
if env['GPROFILE'] == 1:
    debug_flags = [ '-g', '-pg' ]
else:
    debug_flags = [ '-g' ]

# guess at the platform, used to define compiler flags

config_guess = os.popen("tools/config.guess").read()[:-1]

config_cpu = 0
config_arch = 1
config_kernel = 2
config_os = 3
config = config_guess.split ("-")

print "system triple: " + config_guess

# Autodetect
if env['DIST_TARGET'] == 'auto':
    if config[config_arch] == 'apple':
        # The [.] matches to the dot after the major version, "." would match any character
        if re.search ("darwin[0-7][.]", config[config_kernel]) != None:
            env['DIST_TARGET'] = 'panther'
        else:
            env['DIST_TARGET'] = 'tiger'
    else:
        if re.search ("x86_64", config[config_cpu]) != None:
            env['DIST_TARGET'] = 'x86_64'
        elif re.search("i[0-5]86", config[config_cpu]) != None:
            env['DIST_TARGET'] = 'i386'
        elif re.search("powerpc", config[config_cpu]) != None:
            env['DIST_TARGET'] = 'powerpc'
        else:
            env['DIST_TARGET'] = 'i686'
    print "\n*******************************"
    print "detected DIST_TARGET = " + env['DIST_TARGET']
    print "*******************************\n"


if config[config_cpu] == 'powerpc' and env['DIST_TARGET'] != 'none':
    #
    # Apple/PowerPC optimization options
    #
    # -mcpu=7450 does not reliably work with gcc 3.*
    #
    if env['DIST_TARGET'] == 'panther' or env['DIST_TARGET'] == 'tiger':
        if config[config_arch] == 'apple':
            ## opt_flags.extend ([ "-mcpu=7450", "-faltivec"])
            # to support g3s but still have some optimization for above
            opt_flags.extend ([ "-mcpu=G3", "-mtune=7450"])
        else:
            opt_flags.extend ([ "-mcpu=7400", "-maltivec", "-mabi=altivec"])
    else:
        opt_flags.extend([ "-mcpu=750", "-mmultiple" ])
    opt_flags.extend (["-mhard-float", "-mpowerpc-gfxopt"])
    opt_flags.extend (["-Os"])

elif ((re.search ("i[0-9]86", config[config_cpu]) != None) or (re.search ("x86_64", config[config_cpu]) != None)) and env['DIST_TARGET'] != 'none':
    
    build_host_supports_sse = 0
    
    debug_flags.append ("-DARCH_X86")
    opt_flags.append ("-DARCH_X86")
    
    if config[config_kernel] == 'linux' :
        
        if env['DIST_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:
                opt_flags.append ("-mmmx")
            if "sse" in x86_flags:
                build_host_supports_sse = 1
            if "3dnow" in x86_flags:
                opt_flags.append ("-m3dnow")
            
            if config[config_cpu] == "i586":
                opt_flags.append ("-march=i586")
            elif config[config_cpu] == "i686":
                opt_flags.append ("-march=i686")
    
    if ((env['DIST_TARGET'] == 'i686') or (env['DIST_TARGET'] == 'x86_64')) and build_host_supports_sse:
        opt_flags.extend (["-msse", "-mfpmath=sse"])
        debug_flags.extend (["-msse", "-mfpmath=sse"])
# end of processor-specific section

# optimization section
if env['FPU_OPTIMIZATION']:
    if env['DIST_TARGET'] == 'tiger':
        opt_flags.append ("-DBUILD_VECLIB_OPTIMIZATIONS")
        debug_flags.append ("-DBUILD_VECLIB_OPTIMIZATIONS")
        libraries['core'].Append(LINKFLAGS= '-framework Accelerate')
    elif env['DIST_TARGET'] == 'i686' or env['DIST_TARGET'] == 'x86_64':
        opt_flags.append ("-DBUILD_SSE_OPTIMIZATIONS")
        debug_flags.append ("-DBUILD_SSE_OPTIMIZATIONS")
        if env['DIST_TARGET'] == 'x86_64':
            opt_flags.append ("-DUSE_X86_64_ASM")
            debug_flags.append ("-DUSE_X86_64_ASM")
        if build_host_supports_sse != 1:
            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

# handle x86/x86_64 libdir properly

if env['DIST_TARGET'] == 'x86_64':
    env['LIBDIR']='lib64'
else:
    env['LIBDIR']='lib'

#
# save off guessed arch element in an env
#
env.Append(CONFIG_ARCH=config[config_arch])


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

if env['ARCH'] != '':
    opt_flags = env['ARCH'].split()

#
# prepend boiler plate optimization flags
#

opt_flags[:0] = [
    "-O3",
    "-fomit-frame-pointer",
    "-ffast-math",
    "-fstrength-reduce",
    "-pipe"
    ]

if env['DEBUG'] == 1:
    env.Append(CCFLAGS=" ".join (debug_flags))
    env.Append(LINKFLAGS=" ".join (debug_flags))
else:
    env.Append(CCFLAGS=" ".join (opt_flags))
    env.Append(LINKFLAGS=" ".join (opt_flags))

if env['UNIVERSAL'] == 1:
    env.Append(CCFLAGS="-arch i386 -arch ppc")
    env.Append(LINKFLAGS="-arch i386 -arch ppc")

#
# warnings flags
#

env.Append(CCFLAGS="-Wall")
env.Append(CXXFLAGS="-Woverloaded-virtual")

if env['EXTRA_WARN']:
    env.Append(CCFLAGS="-Wextra -pedantic -ansi")
    env.Append(CXXFLAGS="-ansi")
#    env.Append(CFLAGS="-iso")

if env['LIBLO']:
    env.Append(CCFLAGS="-DHAVE_LIBLO")


#
# fix scons nitpickiness on APPLE
#


def prep_libcheck(topenv, libinfo):
    if topenv['DIST_TARGET'] == 'panther' or topenv['DIST_TARGET'] == 'tiger':
        libinfo.Append(CCFLAGS="-I/opt/local/include", LINKFLAGS="-L/opt/local/lib")

prep_libcheck(env, env)

#
# Check for libusb

libraries['usb'] = LibraryInfo ()
prep_libcheck(env, libraries['usb'])

conf = Configure (libraries['usb'])
if conf.CheckLib ('usb', 'usb_interrupt_write'):
    have_libusb = True
else:
    have_libusb = False

libraries['usb'] = conf.Finish ()

#
# Check for FLAC

libraries['flac'] = LibraryInfo ()
prep_libcheck(env, libraries['flac'])
libraries['flac'].Append(CCFLAGS="-I/usr/local/include", LINKFLAGS="-L/usr/local/lib")

conf = Configure (libraries['flac'])
if conf.CheckLib ('FLAC', 'FLAC__stream_decoder_new', language='CXX'):
    conf.env.Append(CCFLAGS='-DHAVE_FLAC')
libraries['flac'] = conf.Finish ()

# or if that fails...
#libraries['flac']    = LibraryInfo (LIBS='FLAC')

# boost (we don't link against boost, just use some header files)

libraries['boost'] = LibraryInfo ()
prep_libcheck(env, libraries['boost'])
libraries['boost'].Append(CCFLAGS="-I/usr/local/include", LINKFLAGS="-L/usr/local/lib")
conf = Configure (libraries['boost'])
if conf.CheckHeader ('boost/shared_ptr.hpp', language='CXX') == False:
        print "Boost header files do not appear to be installed."
        sys.exit (1)
    
libraries['boost'] = conf.Finish ()

#
# Check for liblo

if env['LIBLO']:
    libraries['lo'] = LibraryInfo ()
    prep_libcheck(env, libraries['lo'])

    conf = Configure (libraries['lo'])
    if conf.CheckLib ('lo', 'lo_server_new') == False:
        print "liblo does not appear to be installed."
        sys.exit (1)
    
    libraries['lo'] = conf.Finish ()

#
# Check for dmalloc

libraries['dmalloc'] = LibraryInfo ()
prep_libcheck(env, libraries['dmalloc'])

#
# look for the threaded version
#

conf = Configure (libraries['dmalloc'])
if conf.CheckLib ('dmallocth', 'dmalloc_shutdown'):
    have_libdmalloc = True
else:
    have_libdmalloc = False

libraries['dmalloc'] = conf.Finish ()

#
# Audio/MIDI library (needed for MIDI, since audio is all handled via JACK)
#

conf = Configure(env)

if conf.CheckCHeader('alsa/asoundlib.h'):
    libraries['sysmidi'] = LibraryInfo (LIBS='asound')
    env['SYSMIDI'] = 'ALSA Sequencer'
    subst_dict['%MIDITAG%'] = "seq"
    subst_dict['%MIDITYPE%'] = "alsa/sequencer"
elif conf.CheckCHeader('/System/Library/Frameworks/CoreMIDI.framework/Headers/CoreMIDI.h'):
    # this line is needed because scons can't handle -framework in ParseConfig() yet.
    libraries['sysmidi'] = LibraryInfo (LINKFLAGS= '-framework CoreMIDI -framework CoreFoundation -framework CoreAudio -framework CoreServices -framework AudioUnit -framework AudioToolbox -bind_at_load')
    env['SYSMIDI'] = 'CoreMIDI'
    subst_dict['%MIDITAG%'] = "ardour"
    subst_dict['%MIDITYPE%'] = "coremidi"
else:
    print "It appears you don't have the required MIDI libraries installed. For Linux this means you are missing the development package for ALSA libraries."
    sys.exit (1)

env = conf.Finish()

if env['SYSLIBS']:

    syslibdeps = \
    {
        'sigc++-2.0'           : '2.0',
        'gtkmm-2.4'            : '2.8',
        'libgnomecanvasmm-2.6' : '2.12.0'
    }

    conf = Configure(env, custom_tests = { 'CheckPKGConfig' : CheckPKGConfig,
                    'CheckPKGVersion' : CheckPKGVersion })

    for pkg, version in syslibdeps.iteritems():
        if not conf.CheckPKGVersion( pkg, version ):
            print '%s >= %s not found.' %(pkg, version)
            DependenciesRequiredMessage()
            Exit(1)
	
    env = conf.Finish()
    
    libraries['sigc2'] = LibraryInfo()
    libraries['sigc2'].ParseConfig('pkg-config --cflags --libs sigc++-2.0')
    libraries['glibmm2'] = LibraryInfo()
    libraries['glibmm2'].ParseConfig('pkg-config --cflags --libs glibmm-2.4')
    libraries['cairomm'] = LibraryInfo()
    libraries['cairomm'].ParseConfig('pkg-config --cflags --libs cairomm-1.0')
    libraries['gdkmm2'] = LibraryInfo()
    libraries['gdkmm2'].ParseConfig ('pkg-config --cflags --libs gdkmm-2.4')
    libraries['gtkmm2'] = LibraryInfo()
    libraries['gtkmm2'].ParseConfig ('pkg-config --cflags --libs gtkmm-2.4')
    libraries['atkmm'] = LibraryInfo()
    libraries['atkmm'].ParseConfig ('pkg-config --cflags --libs atkmm-1.6')
    libraries['pangomm'] = LibraryInfo()
    libraries['pangomm'].ParseConfig ('pkg-config --cflags --libs pangomm-1.4')
    libraries['libgnomecanvasmm'] = LibraryInfo()
    libraries['libgnomecanvasmm'].ParseConfig ('pkg-config --cflags --libs libgnomecanvasmm-2.6')

#
# cannot use system one for the time being
#
    
    libraries['sndfile-ardour'] = LibraryInfo(LIBS='libsndfile-ardour',
                                    LIBPATH='#libs/libsndfile',
                                    CPPPATH=['#libs/libsndfile/src'])

#    libraries['flowcanvas'] = LibraryInfo(LIBS='flowcanvas', LIBPATH='#/libs/flowcanvas', CPPPATH='#libs/flowcanvas')
    libraries['soundtouch'] = LibraryInfo()
    libraries['soundtouch'].ParseConfig ('pkg-config --cflags --libs soundtouch-1.0')
    # Comment the previous line and uncomment this for Debian:
    #libraries['soundtouch'].ParseConfig ('pkg-config --cflags --libs libSoundTouch')

    libraries['appleutility'] = LibraryInfo(LIBS='libappleutility',
                                            LIBPATH='#libs/appleutility',
                                            CPPPATH='#libs/appleutility')
    
    coredirs = [
        'templates'
    ]
    
    subdirs = [
        'libs/libsndfile',
        'libs/pbd',
        'libs/midi++2',
        'libs/ardour',
    # these are unconditionally included but have
    # tests internally to avoid compilation etc
    # if VST is not set
        'libs/fst',
        'vst',
    # this is unconditionally included but has
    # tests internally to avoid compilation etc
    # if COREAUDIO is not set
        'libs/appleutility'
        ]
    
    gtk_subdirs = [
#        'libs/flowcanvas',
        'libs/gtkmm2ext',
        'gtk2_ardour',
        'libs/clearlooks'
        ]

else:
    libraries['sigc2'] = LibraryInfo(LIBS='sigc++2',
                                    LIBPATH='#libs/sigc++2',
                                    CPPPATH='#libs/sigc++2')
    libraries['glibmm2'] = LibraryInfo(LIBS='glibmm2',
                                    LIBPATH='#libs/glibmm2',
                                    CPPPATH='#libs/glibmm2')
    libraries['cairomm'] = LibraryInfo(LIBS='cairomm',
                                    LIBPATH='#libs/cairomm',
                                    CPPPATH='#libs/cairomm')
    libraries['pangomm'] = LibraryInfo(LIBS='pangomm',
                                    LIBPATH='#libs/gtkmm2/pango',
                                    CPPPATH='#libs/gtkmm2/pango')
    libraries['atkmm'] = LibraryInfo(LIBS='atkmm',
                                     LIBPATH='#libs/gtkmm2/atk',
                                     CPPPATH='#libs/gtkmm2/atk')
    libraries['gdkmm2'] = LibraryInfo(LIBS='gdkmm2',
                                      LIBPATH='#libs/gtkmm2/gdk',
                                      CPPPATH='#libs/gtkmm2/gdk')
    libraries['gtkmm2'] = LibraryInfo(LIBS='gtkmm2',
                                     LIBPATH="#libs/gtkmm2/gtk",
                                     CPPPATH='#libs/gtkmm2/gtk/')
    libraries['libgnomecanvasmm'] = LibraryInfo(LIBS='libgnomecanvasmm',
                                                LIBPATH='#libs/libgnomecanvasmm',
                                                CPPPATH='#libs/libgnomecanvasmm')
    
    libraries['soundtouch'] = LibraryInfo(LIBS='soundtouch',
                                          LIBPATH='#libs/soundtouch',
                                          CPPPATH=['#libs', '#libs/soundtouch'])
    libraries['sndfile-ardour'] = LibraryInfo(LIBS='libsndfile-ardour',
                                    LIBPATH='#libs/libsndfile',
                                    CPPPATH=['#libs/libsndfile', '#libs/libsndfile/src'])
    libraries['appleutility'] = LibraryInfo(LIBS='libappleutility',
                                            LIBPATH='#libs/appleutility',
                                            CPPPATH='#libs/appleutility')

    coredirs = [
        'libs/soundtouch',
        'templates'
    ]
    
    subdirs = [
        'libs/sigc++2',
        'libs/libsndfile',
        'libs/pbd',
        'libs/midi++2',
        'libs/ardour',
    # these are unconditionally included but have
    # tests internally to avoid compilation etc
    # if VST is not set
        'libs/fst',
        'vst',
    # this is unconditionally included but has
    # tests internally to avoid compilation etc
    # if COREAUDIO is not set
        'libs/appleutility'
        ]
    
    gtk_subdirs = [
	'libs/glibmm2',
        'libs/cairomm',
	'libs/gtkmm2/pango',
	'libs/gtkmm2/atk',
	'libs/gtkmm2/gdk',
	'libs/gtkmm2/gtk',
	'libs/libgnomecanvasmm',
#	'libs/flowcanvas',
        'libs/gtkmm2ext',
        'gtk2_ardour',
        'libs/clearlooks'
        ]

#
# * always build the LGPL control protocol lib, since we link against it from libardour
# * ditto for generic MIDI
# * tranzport checks whether it should build internally, but we need here so that
#   its included in the tarball
#

surface_subdirs = [ 'libs/surfaces/control_protocol', 'libs/surfaces/generic_midi', 'libs/surfaces/tranzport', 'libs/surfaces/mackie' ]

if env['SURFACES']:
    if have_libusb:
        env['TRANZPORT'] = 1
    else:
        env['TRANZPORT'] = 0
        print 'Disabled building Tranzport code because libusb could not be found'
    if os.access ('libs/surfaces/sony9pin', os.F_OK):
        surface_subdirs += [ 'libs/surfaces/sony9pin' ]

opts.Save('scache.conf', env)
Help(opts.GenerateHelpText(env))

if os.environ.has_key('PATH'):
    env.Append(PATH = os.environ['PATH'])

if os.environ.has_key('PKG_CONFIG_PATH'):
    env.Append(PKG_CONFIG_PATH = os.environ['PKG_CONFIG_PATH'])

if os.environ.has_key('CC'):
    env['CC'] = os.environ['CC']

if os.environ.has_key('CXX'):
    env['CXX'] = os.environ['CXX']

if os.environ.has_key('DISTCC_HOSTS'):
    env['ENV']['DISTCC_HOSTS'] = os.environ['DISTCC_HOSTS']
    env['ENV']['HOME'] = os.environ['HOME']

final_prefix = '$PREFIX'

if env['DESTDIR'] :
    install_prefix = '$DESTDIR/$PREFIX'
else:
    install_prefix = env['PREFIX']

subst_dict['%INSTALL_PREFIX%'] = install_prefix;
subst_dict['%FINAL_PREFIX%'] = final_prefix;
subst_dict['%PREFIX%'] = final_prefix;

if env['PREFIX'] == '/usr':
    final_config_prefix = '/etc'
else:
    final_config_prefix = env['PREFIX'] + '/etc'

config_prefix = '$DESTDIR' + final_config_prefix

#
# everybody needs this
#

env.Merge ([ libraries['core'] ])


#
# i18n support
#

conf = Configure (env)
if env['NLS']:
    nls_error = 'This system is not configured for internationalized applications.  An english-only version will be built:'
    print 'Checking for internationalization support ...'
    have_gettext = conf.TryAction(Action('xgettext --version'))
    if have_gettext[0] != 1:
        nls_error += ' No xgettext command.'
        env['NLS'] = 0
    else:
        print "Found xgettext"
    
    have_msgmerge = conf.TryAction(Action('msgmerge --version'))
    if have_msgmerge[0] != 1:
        nls_error += ' No msgmerge command.'
        env['NLS'] = 0
    else:
        print "Found msgmerge"
    
    if not conf.CheckCHeader('libintl.h'):
        nls_error += ' No libintl.h.'
        env['NLS'] = 0
        
    if env['NLS'] == 0:
        print nls_error
    else:
        print "International version will be built."
env = conf.Finish()

if env['NLS'] == 1:
    env.Append(CCFLAGS="-DENABLE_NLS")

Export('env install_prefix final_prefix config_prefix final_config_prefix libraries i18n ardour_version subst_dict')

#
# the configuration file may be system dependent
#

conf = env.Configure ()

if conf.CheckCHeader('/System/Library/Frameworks/CoreAudio.framework/Versions/A/Headers/CoreAudio.h'):
    subst_dict['%JACK_INPUT%'] = "coreaudio:Built-in Audio:in"
    subst_dict['%JACK_OUTPUT%'] = "coreaudio:Built-in Audio:out"
else:
    subst_dict['%JACK_INPUT%'] = "alsa_pcm:playback_"
    subst_dict['%JACK_OUTPUT%'] = "alsa_pcm:capture_"

# posix_memalign available
if not conf.CheckFunc('posix_memalign'):
    print 'Did not find posix_memalign(), using malloc'
    env.Append(CCFLAGS='-DNO_POSIX_MEMALIGN')


env = conf.Finish()

# generate the per-user and system rc files from the same source

rcbuild = env.SubstInFile ('ardour.rc','ardour.rc.in', SUBST_DICT = subst_dict)
sysrcbuild = env.SubstInFile ('ardour_system.rc','ardour.rc.in', SUBST_DICT = subst_dict)

# add to the substitution dictionary

subst_dict['%VERSION%'] = ardour_version[0:3]
subst_dict['%EXTRA_VERSION%'] = ardour_version[3:]
subst_dict['%REVISION_STRING%'] = ''
if os.path.exists('.svn'):
    subst_dict['%REVISION_STRING%'] = '.' + fetch_svn_revision ('.') + 'svn'

# specbuild = env.SubstInFile ('ardour.spec','ardour.spec.in', SUBST_DICT = subst_dict)

the_revision = env.Command ('frobnicatory_decoy', [], create_stored_revision)

env.Alias('revision', the_revision)
env.Alias('install', env.Install(os.path.join(config_prefix, 'ardour2'), 'ardour_system.rc'))
env.Alias('install', env.Install(os.path.join(config_prefix, 'ardour2'), 'ardour.rc'))

Default (rcbuild)
Default (sysrcbuild)

# source tarball

Precious (env['DISTTREE'])

env.Distribute (env['DISTTREE'],
               [ 'SConstruct', 'svn_revision.h',
                  'COPYING', 'PACKAGER_README', 'README',
                  'ardour.rc.in',
                  'tools/config.guess',
                  'icons/icon/ardour_icon_mac_mask.png',
                  'icons/icon/ardour_icon_mac.png',
                  'icons/icon/ardour_icon_tango_16px_blue.png',
                  'icons/icon/ardour_icon_tango_16px_red.png',
                  'icons/icon/ardour_icon_tango_22px_blue.png',
                  'icons/icon/ardour_icon_tango_22px_red.png',
                  'icons/icon/ardour_icon_tango_32px_blue.png',
                  'icons/icon/ardour_icon_tango_32px_red.png',
                  'icons/icon/ardour_icon_tango_48px_blue.png',
                  'icons/icon/ardour_icon_tango_48px_red.png'
                  ] +
                glob.glob ('DOCUMENTATION/AUTHORS*') +
                glob.glob ('DOCUMENTATION/CONTRIBUTORS*') +
                glob.glob ('DOCUMENTATION/TRANSLATORS*') +
                glob.glob ('DOCUMENTATION/BUILD*') +
                glob.glob ('DOCUMENTATION/FAQ*') +
                glob.glob ('DOCUMENTATION/README*')
                )

srcdist = env.Tarball(env['TARBALL'], [ env['DISTTREE'], the_revision ])
env.Alias ('srctar', srcdist)

#
# don't leave the distree around
#

env.AddPreAction (env['DISTTREE'], Action ('rm -rf ' + str (File (env['DISTTREE']))))
env.AddPostAction (srcdist, Action ('rm -rf ' + str (File (env['DISTTREE']))))

#
# the subdirs
#

for subdir in coredirs:
    SConscript (subdir + '/SConscript')

for sublistdir in [ subdirs, gtk_subdirs, surface_subdirs ]:
    for subdir in sublistdir:
        SConscript (subdir + '/SConscript')

# cleanup
env.Clean ('scrub', [ 'scache.conf', '.sconf_temp', '.sconsign.dblite', 'config.log'])