# $Id: SConstruct,v 1.2 2006/03/23 14:54:00 dron Exp $+
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# Tag Image File Format (TIFF) Software+
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#+
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# Copyright (C) 2005, Andrey Kiselev <dron@ak4719.spb.edu>+
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#+
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# Permission to use, copy, modify, distribute, and sell this software and +
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# its documentation for any purpose is hereby granted without fee, provided+
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# that (i) the above copyright notices and this permission notice appear in+
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# all copies of the software and related documentation, and (ii) the names of+
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# Sam Leffler and Silicon Graphics may not be used in any advertising or+
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# publicity relating to the software without the specific, prior written+
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# permission of Sam Leffler and Silicon Graphics.+
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# +
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# THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND, +
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# EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY +
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# WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.  +
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# +
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# IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR+
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# ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,+
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# OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,+
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# WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF +
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# LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE +
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# OF THIS SOFTWARE.+
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+
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# This file contains rules to build software with the SCons tool+
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# (see the http://www.scons.org/ for details on SCons).+
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+
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import os+
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+
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env = Environment()+
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+
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# Read the user supplied options+
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opts = Options('libtiff.conf')+
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opts.Add(PathOption('PREFIX', \+
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    'install architecture-independent files in this directory', \+
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    '/usr/local', PathOption.PathIsDirCreate))+
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opts.Add(BoolOption('ccitt', \+
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    'enable support for CCITT Group 3 & 4 algorithms', \+
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    'yes'))+
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opts.Add(BoolOption('packbits', \+
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    'enable support for Macintosh PackBits algorithm', \+
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    'yes'))+
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opts.Add(BoolOption('lzw', \+
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    'enable support for LZW algorithm', \+
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    'yes'))+
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opts.Add(BoolOption('thunder', \+
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    'enable support for ThunderScan 4-bit RLE algorithm', \+
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    'yes'))+
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opts.Add(BoolOption('next', \+
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    'enable support for NeXT 2-bit RLE algorithm', \+
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    'yes'))+
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opts.Add(BoolOption('logluv', \+
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    'enable support for LogLuv high dynamic range encoding', \+
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    'yes'))+
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opts.Add(BoolOption('strip_chopping', \+
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    'support for strip chopping (whether or not to convert single-strip uncompressed images to mutiple strips of ~8Kb to reduce memory usage)', \+
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    'yes'))+
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opts.Add(BoolOption('extrasample_as_alpha', \+
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    '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', \+
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    'yes'))+
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opts.Add(BoolOption('check_ycbcr_subsampling', \+
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    'disable picking up YCbCr subsampling info from the JPEG data stream to support files lacking the tag', \+
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    'yes'))+
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opts.Update(env)+
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opts.Save('libtiff.conf', env)+
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Help(opts.GenerateHelpText(env))+
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+
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# Here are our installation paths:+
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idir_prefix = '$PREFIX'+
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idir_lib = '$PREFIX/lib'+
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idir_bin = '$PREFIX/bin'+
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idir_inc = '$PREFIX/include'+
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idir_doc = '$PREFIX/doc'+
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Export([ 'env', 'idir_prefix', 'idir_lib', 'idir_bin', 'idir_inc', 'idir_doc' ])+
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+
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# Now proceed to system feature checks+
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target_cpu, target_vendor, target_kernel, target_os = \+
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    os.popen("./config.guess").readlines()[0].split("-")+
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+
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def Define(context, key, have):+
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    import SCons.Conftest+
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    SCons.Conftest._Have(context, key, have)+
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+
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def CheckCustomOption(context, name):+
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    context.Message('Checking is the ' + name + ' option set... ')+
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    ret = env[name]+
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    Define(context, name + '_SUPPORT', ret)+
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    context.Result(ret)+
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    return ret+
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+
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def CheckFillorderOption(context):+
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    context.Message('Checking for the native cpu bit order... ')+
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    if target_cpu[0] == 'i' and target_cpu[2:] == '86':+
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	Define(context, 'HOST_FILLORDER', 'FILLORDER_LSB2MSB')+
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	context.Result('lsb2msb')+
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    else:+
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	Define(context, 'HOST_FILLORDER', 'FILLORDER_MSB2LSB')+
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	context.Result('msb2lsb')+
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    return 1+
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+
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def CheckIEEEFPOption(context):+
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    context.Message('Checking for the IEEE floating point format... ')+
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    Define(context, 'HAVE_IEEEFP', 1)+
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    context.Result(1)+
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    return 1+
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+
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def CheckOtherOption(context, name):+
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    context.Message('Checking is the ' + name + ' option set... ')+
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    ret = env[name]+
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    Define(context, 'HAVE_' + name, ret)+
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    context.Result(ret)+
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    return ret+
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+
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custom_tests = { \+
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    'CheckCustomOption' : CheckCustomOption, \+
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    'CheckFillorderOption' : CheckFillorderOption, \+
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    'CheckIEEEFPOption' : CheckIEEEFPOption, \+
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    'CheckOtherOption' : CheckOtherOption \+
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    }+
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conf = Configure(env, custom_tests = custom_tests, \+
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    config_h = 'libtiff/tif_config.h')+
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+
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# Check for standard library+
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conf.CheckLib('c')+
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if target_os != 'cygwin' \+
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    and target_os != 'mingw32' \+
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    and target_os != 'beos' \+
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    and target_os != 'darwin':+
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    conf.CheckLib('m')+
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+
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# Check for system headers+
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conf.CheckCHeader('assert.h')+
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conf.CheckCHeader('fcntl.h')+
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conf.CheckCHeader('limits.h')+
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conf.CheckCHeader('malloc.h')+
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conf.CheckCHeader('search.h')+
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conf.CheckCHeader('sys/time.h')+
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conf.CheckCHeader('unistd.h')+
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+
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# Check for standard library functions+
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conf.CheckFunc('floor')+
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conf.CheckFunc('isascii')+
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conf.CheckFunc('memmove')+
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conf.CheckFunc('memset')+
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conf.CheckFunc('mmap')+
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conf.CheckFunc('pow')+
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conf.CheckFunc('sqrt')+
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conf.CheckFunc('strchr')+
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conf.CheckFunc('strrchr')+
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conf.CheckFunc('strstr')+
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conf.CheckFunc('strtol')+
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+
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conf.CheckFillorderOption()+
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conf.CheckIEEEFPOption()+
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conf.CheckCustomOption('ccitt')+
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conf.CheckCustomOption('packbits')+
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conf.CheckCustomOption('lzw')+
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conf.CheckCustomOption('thunder')+
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conf.CheckCustomOption('next')+
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conf.CheckCustomOption('logluv')+
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conf.CheckOtherOption('strip_chopping')+
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conf.CheckOtherOption('extrasample_as_alpha')+
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conf.CheckOtherOption('check_ycbcr_subsampling')+
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+
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env = conf.Finish()+
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+
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# Ok, now go to build files in the subdirectories+
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SConscript(dirs = [ 'libtiff' ], name = 'SConstruct')+
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