# $Id: SConstruct,v 1.2 2006/03/23 14:54:00 dron Exp $

# Tag Image File Format (TIFF) Software

#

# Copyright (C) 2005, Andrey Kiselev <dron@ak4719.spb.edu>

#

# Permission to use, copy, modify, distribute, and sell this software and 

# its documentation for any purpose is hereby granted without fee, provided

# that (i) the above copyright notices and this permission notice appear in

# all copies of the software and related documentation, and (ii) the names of

# Sam Leffler and Silicon Graphics may not be used in any advertising or

# publicity relating to the software without the specific, prior written

# permission of Sam Leffler and Silicon Graphics.

# 

# THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND, 

# EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY 

# WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.  

# 

# IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR

# ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,

# OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,

# WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF 

# LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE 

# OF THIS SOFTWARE.

# This file contains rules to build software with the SCons tool

# (see the http://www.scons.org/ for details on SCons).

import os

env = Environment()

# Read the user supplied options

opts = Options('libtiff.conf')

opts.Add(PathOption('PREFIX', \

    'install architecture-independent files in this directory', \

    '/usr/local', PathOption.PathIsDirCreate))

opts.Add(BoolOption('ccitt', \

    'enable support for CCITT Group 3 & 4 algorithms', \

    'yes'))

opts.Add(BoolOption('packbits', \

    'enable support for Macintosh PackBits algorithm', \

    'yes'))

opts.Add(BoolOption('lzw', \

    'enable support for LZW algorithm', \

    'yes'))

opts.Add(BoolOption('thunder', \

    'enable support for ThunderScan 4-bit RLE algorithm', \

    'yes'))

opts.Add(BoolOption('next', \

    'enable support for NeXT 2-bit RLE algorithm', \

    'yes'))

opts.Add(BoolOption('logluv', \

    'enable support for LogLuv high dynamic range encoding', \

    'yes'))

opts.Add(BoolOption('strip_chopping', \

    'support for strip chopping (whether or not to convert single-strip uncompressed images to mutiple strips of ~8Kb to reduce memory usage)', \

    'yes'))

opts.Add(BoolOption('extrasample_as_alpha', \

    'the RGBA interface will treat a fourth sample with no EXTRASAMPLE_ value as being ASSOCALPHA. Many packages produce RGBA files but don\'t mark the alpha properly', \

    'yes'))

opts.Add(BoolOption('check_ycbcr_subsampling', \

    'disable picking up YCbCr subsampling info from the JPEG data stream to support files lacking the tag', \

    'yes'))

opts.Update(env)

opts.Save('libtiff.conf', env)

Help(opts.GenerateHelpText(env))

# Here are our installation paths:

idir_prefix = '$PREFIX'

idir_lib = '$PREFIX/lib'

idir_bin = '$PREFIX/bin'

idir_inc = '$PREFIX/include'

idir_doc = '$PREFIX/doc'

Export([ 'env', 'idir_prefix', 'idir_lib', 'idir_bin', 'idir_inc', 'idir_doc' ])

# Now proceed to system feature checks

target_cpu, target_vendor, target_kernel, target_os = \

    os.popen("./config.guess").readlines()[0].split("-")

def Define(context, key, have):

    import SCons.Conftest

    SCons.Conftest._Have(context, key, have)

def CheckCustomOption(context, name):

    context.Message('Checking is the ' + name + ' option set... ')

    ret = env[name]

    Define(context, name + '_SUPPORT', ret)

    context.Result(ret)

    return ret

def CheckFillorderOption(context):

    context.Message('Checking for the native cpu bit order... ')

    if target_cpu[0] == 'i' and target_cpu[2:] == '86':

	Define(context, 'HOST_FILLORDER', 'FILLORDER_LSB2MSB')

	context.Result('lsb2msb')

    else:

	Define(context, 'HOST_FILLORDER', 'FILLORDER_MSB2LSB')

	context.Result('msb2lsb')

    return 1

def CheckIEEEFPOption(context):

    context.Message('Checking for the IEEE floating point format... ')

    Define(context, 'HAVE_IEEEFP', 1)

    context.Result(1)

    return 1

def CheckOtherOption(context, name):

    context.Message('Checking is the ' + name + ' option set... ')

    ret = env[name]

    Define(context, 'HAVE_' + name, ret)

    context.Result(ret)

    return ret

custom_tests = { \

    'CheckCustomOption' : CheckCustomOption, \

    'CheckFillorderOption' : CheckFillorderOption, \

    'CheckIEEEFPOption' : CheckIEEEFPOption, \

    'CheckOtherOption' : CheckOtherOption \

    }

conf = Configure(env, custom_tests = custom_tests, \

    config_h = 'libtiff/tif_config.h')

# Check for standard library

conf.CheckLib('c')

if target_os != 'cygwin' \

    and target_os != 'mingw32' \

    and target_os != 'beos' \

    and target_os != 'darwin':

    conf.CheckLib('m')

# Check for system headers

conf.CheckCHeader('assert.h')

conf.CheckCHeader('fcntl.h')

conf.CheckCHeader('limits.h')

conf.CheckCHeader('malloc.h')

conf.CheckCHeader('search.h')

conf.CheckCHeader('sys/time.h')

conf.CheckCHeader('unistd.h')

# Check for standard library functions

conf.CheckFunc('floor')

conf.CheckFunc('isascii')

conf.CheckFunc('memmove')

conf.CheckFunc('memset')

conf.CheckFunc('mmap')

conf.CheckFunc('pow')

conf.CheckFunc('sqrt')

conf.CheckFunc('strchr')

conf.CheckFunc('strrchr')

conf.CheckFunc('strstr')

conf.CheckFunc('strtol')

conf.CheckFillorderOption()

conf.CheckIEEEFPOption()

conf.CheckCustomOption('ccitt')

conf.CheckCustomOption('packbits')

conf.CheckCustomOption('lzw')

conf.CheckCustomOption('thunder')

conf.CheckCustomOption('next')

conf.CheckCustomOption('logluv')

conf.CheckOtherOption('strip_chopping')

conf.CheckOtherOption('extrasample_as_alpha')

conf.CheckOtherOption('check_ycbcr_subsampling')

env = conf.Finish()

# Ok, now go to build files in the subdirectories

SConscript(dirs = [ 'libtiff' ], name = 'SConstruct')