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#####
# Note: For Macports, libusb-legacy need to be used?
# 	I can't get it to build with libusb-compat
####

import os
import os.path
from glob import glob

###############################################################
# Utility functions.
###############################################################

# Similar to env.WhereIs, but always searches os.environ.
def find_on_path(filename):
    paths = os.environ.get('PATH')
    if not paths:
        return None
    for p in paths.split(':'):
        path = os.path.abspath(os.path.join(p, filename))
        if os.path.isfile(path):
            return p
    return None

auto_libs = 'libusb-legacy'

cmdname = 'pkg-config'
pkg_config_path = find_on_path(cmdname) + ('/%s' % cmdname)

# Detect the system's endianness
from sys import byteorder
if byteorder == 'big':
	endian = '_NXT_BIG_ENDIAN'
else:
	endian = '_NXT_LITTLE_ENDIAN'

BuildEnv = Environment(CCFLAGS=['-Wall', '-std=gnu99',
				'-g', '-ggdb', '-D' + endian])
if auto_libs:
	cmdstr = '%s --cflags --libs ' % pkg_config_path
	BuildEnv.ParseConfig(cmdstr + ' --cflags --libs ' + auto_libs)

BuildEnv.Command('flash_routine.h',
		 'flash_routine.h.base',
		 './make_flash_header.py')

BuildEnv.Append(LIBPATH='.')
libnxt = Default(BuildEnv.Library('nxt',
			 [x for x in glob('*.c')
			  if not x.startswith('main_')],
			 LIBS='usb-legacy'))

fwflash = Default(BuildEnv.Program('fwflash', 'main_fwflash.c',
			 LIBS=['usb-legacy', 'nxt']))

fwexec = Default(BuildEnv.Program('fwexec', 'main_fwexec.c',
			 LIBS=['usb-legacy', 'nxt']))

# the install target
#BuildEnv.Alias("install", BuildEnv.Install(os.path.join(os.environ['DESTDIR'], "lib"), libnxt))
#BuildEnv.Alias("install", BuildEnv.Install(os.path.join(os.environ['DESTDIR'], "bin"), fwflash, fwexec))
#BuildEnv.Command("uninstall", None, Delete(FindInstalledFiles()))