# -*-python-*-
'''
-Experimental scons (www.scons.org) building:
+Experimental scons (www.scons.org) building.
-scons TARGET builds from source directory ./TARGET (not recursive)
+Usage
+ scons TARGET
-Usage:
- scons
- scons lily # build lily
+build from source directory ./TARGET (not recursive)
- LILYPONDPREFIX=out-scons/usr/share/lilypond lily/out-scons/lilypond-bin
- scons doc # build web doc
+Configure, build
-? scons fonts # build all font stuff (split this? )
+ scons [config] # configure
+ scons # build all
- scons config # reconfigure
+Run from build tree
- scons / # builds all possible targets
+ run=$(pwd)/out-scons/usr
+ export LOCALE=$run/share/locale
+ export TEXMF='{'$run/share/lilypond,$(kpsexpand '$TEXMF')'}'
+ PATH=$run/bin:$PATH
- scons install
- scons -c # clean
- scons -h # help
+ #optionally, if you do not use custom.py below
+ #export LILYPONDPREFIX=$run/share/lilypond/<VERSION>
- scons build=DIR # scrdir build, write to new tree =build
- scons out=DIR # write output to deeper dir DIR
+ lilypond input/simple
-Optionally, make a custom.py. I have
+Other targets
+ scons mf-essential # build minimal mf stuff
+
+ scons doc # build web doc
+ scons config # reconfigure
+ scons install # install
+ scons -c # clean
+ scons -h # help
+
+ scons / # build *everything* (including installation)
+
+Options (see scons -h)
+ scons build=DIR # clean srcdir build, output below DIR
+ scons out=DIR # write output for alterative config to DIR
+
+Debugging
+ scons --debug=dtree
+ scons --debug=explain
+ scons verbose=1
+
+Optional custom.py
import os
out='out-scons'
# TODO:
-# * add missing dirs
-# * cleanup
-# * separate environments?
-# - compile environment checks headers and libraries
-# - doc environment checks doc stuff
+# * reality check:
+# - too many stages in Environments setup
+# (see also buildscripts/builders.py)
+# - Home-brew scons.cach configuration caching
+# - Home-brew source tarball generating -- [why] isn't that in SCons?
+
+# * usability and documentation for "./configure; make" users
+
+# * too much cruft in toplevel SConstruct
+
+# * (optional) operation without CVS directories, from tarball
+
+# * more program configure tests, actually use full executable name
+
+# * install doc
+
+# * split doc target: doc input examples mutopia?
+
+# * grep FIXME $(find . -name 'S*t')
-# * commandline targets:
-# - clean => -c ?
-# * more fine-grained config.h -- move lilypondprefix to version.hh?
-# - config.h: changes after system upgrades, affects all files
-# - version.hh: prefix, version etc? affects few
+# * drop "fast"
import re
import glob
import stat
import shutil
-# faster but scary: when changing #includes, do scons --implicit-deps-changed
-# SetOption ('implicit_cache', 1)
+# duh, we need 0.95.1
+EnsureSConsVersion (0, 95)
-# SConscripts are only needed in directories where something needs
-# to be done, building or installing
-# TODO: Documentation/*, input/*/*, vim, po
-# rename Documentation/* to ./doc?
-
-# somethin's broken wrt config.h checksums?
-FOOSUMS = 1
+usage = r'''Usage:
+[ENVVAR=VALUE]... scons [OPTION=VALUE]... [TARGET|DIR]...
-subdirs = ['flower', 'lily', 'mf', 'scm', 'ly', 'Documentation',
- 'Documentation/user', 'Documentation/topdocs',
- 'input', 'scripts', 'elisp',
- 'buildscripts', 'cygwin', 'debian', 'po']
+TARGETS: clean, config, doc, dist, install, mf-essential, po-update,
+ realclean, release, sconsclean, tar, TAGS
-usage = r'''Usage:
-scons [KEY=VALUE].. [TARGET]..
+ENVVARS: BASH, CCFLAGS, CC, CXX, LIBS, PYTHON, SH...
+ (see SConstruct:config_vars)
-where TARGET is config|lily|all|fonts|doc|tar|dist|release
+OPTIONS:
'''
-config_cache = 'config.cache'
+config_cache = 'scons.cache'
+if os.path.exists (config_cache) and 'config' in COMMAND_LINE_TARGETS:
+ os.unlink (config_cache)
-config_vars = (
+# All config_vars can be set as ENVVAR, eg:
+#
+# CXX=g++-4.0 GS=~/usr/pkg/gs/bin/gs scons config
+#
+# append test_program variables automagically?
+config_vars = [
'BASH',
- 'CFLAGS',
+ 'BYTEORDER',
+ 'CC',
+ 'CCFLAGS',
'CPPPATH',
+ 'CPPDEFINES',
+ 'CXX',
'CXXFLAGS',
'DEFINES',
+ 'DVIPS',
+ 'FONTFORGE',
+ 'GCC',
+ 'GXX',
+ 'GS',
'LIBS',
- 'METAFONT',
+ 'LINKFLAGS',
+ 'MF',
+ 'MFTRACE',
'PERL',
'PYTHON',
- )
+ 'SH',
+ ]
# Put your favourite stuff in custom.py
-CacheDir ("buildcache")
opts = Options ([config_cache, 'custom.py'], ARGUMENTS)
opts.Add ('prefix', 'Install prefix', '/usr/')
opts.Add ('out', 'Output directory', 'out-scons')
opts.Add ('build', 'Build directory', '.')
+opts.Add ('DESTDIR', 'DESTDIR prepended to prefix', '')
opts.AddOptions (
BoolOption ('warnings', 'compile with -Wall and similiar',
1),
BoolOption ('verbose', 'run commands with verbose flag',
0),
BoolOption ('checksums', 'use checksums instead of timestamps',
- 1),
+ 0),
+ BoolOption ('fast', 'use timestamps, implicit cache, prune CPPPATH',
+ 0),
)
srcdir = Dir ('.').srcnode ().abspath
-
#ugh
sys.path.append (os.path.join (srcdir, 'stepmake', 'bin'))
import packagepython
version = packagepython.version_tuple_to_str (package.version)
ENV = { 'PATH' : os.environ['PATH'] }
-for key in ['LD_LIBRARY_PATH', 'GUILE_LOAD_PATH', 'PKG_CONFIG_PATH']:
- if os.environ.has_key(key):
+for key in ['LD_LIBRARY_PATH', 'GUILE_LOAD_PATH', 'PKG_CONFIG_PATH', 'TEXMF']:
+ if os.environ.has_key (key):
ENV[key] = os.environ[key]
env = Environment (
ENV = ENV,
-
- BASH = '/bin/bash',
+ BYTEORDER = sys.byteorder.upper (),
+ CC = '$GCC',
+ CXX = '$GXX',
+ CPPDEFINES = '-DHAVE_CONFIG_H',
MAKEINFO = 'LANG= makeinfo',
- PERL = '/usr/bin/perl',
- PYTHON = '/usr/bin/python',
- SH = '/bin/sh',
-
- ABC2LY_PY = srcdir + '/scripts/abc2ly.py',
- LILYPOND_BOOK = srcdir + '/scripts/lilypond-book.py',
- LILYPOND_BOOK_FLAGS = '',
- LILYPOND_BOOK_FORMAT = 'texi-html',
- LILYPOND_PY = srcdir + '/scripts/lilypond.py',
MF_TO_TABLE_PY = srcdir + '/buildscripts/mf-to-table.py',
PKG_CONFIG_PATH = [os.path.join (os.environ['HOME'],
'usr/pkg/gnome/lib'),
os.path.join (os.environ['HOME'],
'usr/pkg/pango/lib')],
+ GZIP='-9v',
MFMODE = 'ljfour',
- TEXINFO_PAPERSIZE_OPTION = '-t @afourpaper',
TOPLEVEL_VERSION = version,
)
Help (usage + opts.GenerateHelpText (env))
+# Add all config_vars to opts, so that they will be read and saved
+# together with the other configure options.
map (lambda x: opts.AddOptions ((x,)), config_vars)
opts.Update (env)
-if env['checksums']:
+for key in config_vars:
+ if os.environ.has_key (key):
+ env[key] = os.environ[key]
+
+if env['fast']:
+ # Usability switch (Anthony Roach).
+ # See http://www.scons.org/cgi-bin/wiki/GoFastButton
+ # First do: scons realclean .
+ env['checksums'] = 0
+ SetOption ('max_drift', 1)
+ SetOption ('implicit_cache', 1)
+elif env['checksums']:
+ # Always use checksums (makes more sense than timestamps).
SetOption ('max_drift', 0)
+ # Using *content* checksums prevents rebuilds after
+ # [re]configure if config.hh has not changed. Too bad that it
+ # is unusably slow.
+ TargetSignatures ('content')
+
+absbuild = Dir (env['build']).abspath
+outdir = os.path.join (Dir (env['build']).abspath, env['out'])
+run_prefix = os.path.join (absbuild, os.path.join (env['out'], 'usr'))
+
+
+config_hh = os.path.join (outdir, 'config.hh')
+version_hh = os.path.join (outdir, 'version.hh')
+
+env.Alias ('config', config_cache)
+
+cachedir = os.path.join (outdir, 'build-cache')
+
+if not os.path.exists (cachedir):
+ os.makedirs (cachedir)
+
+CacheDir (cachedir)
+
+# No need to set $LILYPONDPREFIX to run lily, but cannot install...
+if env['debugging'] and not 'install' in COMMAND_LINE_TARGETS:
+ env['prefix'] = run_prefix
prefix = env['prefix']
bindir = os.path.join (prefix, 'bin')
sharedir = os.path.join (prefix, 'share')
libdir = os.path.join (prefix, 'lib')
+libdir_package = os.path.join (libdir, package.name)
+lidbir_package_version = os.path.join (libdir_package, version)
localedir = os.path.join (sharedir, 'locale')
+sharedir_doc_package = os.path.join (sharedir, 'doc', package.name)
sharedir_package = os.path.join (sharedir, package.name)
sharedir_package_version = os.path.join (sharedir_package, version)
lilypondprefix = sharedir_package_version
-# post-option environment-update
+# junkme
env.Append (
+ absbuild = absbuild,
srcdir = srcdir,
-
- bindir = bindir,
- sharedir = sharedir,
- lilypond_datadir = sharedir_package,
- localedir = localedir,
- local_lilypond_datadir = sharedir_package_version,
- lilypondprefix = lilypondprefix,
- sharedir_package = sharedir_package,
- sharedir_package_version = sharedir_package_version,
)
-env.CacheDir (os.path.join (env['build'], '=build-cache'))
-
-if env['debugging']:
- env.Append (CFLAGS = '-g')
- env.Append (CXXFLAGS = '-g')
-if env['optimising']:
- env.Append (CFLAGS = '-O2')
- env.Append (CXXFLAGS = '-O2')
- env.Append (CXXFLAGS = '-DSTRING_UTILS_INLINED')
-if env['warnings']:
- env.Append (CFLAGS = '-W ')
- env.Append (CFLAGS = '-Wall')
- # what about = ['-W', '-Wall', ...]?
- env.Append (CXXFLAGS = '-W')
- env.Append (CXXFLAGS = '-Wall')
- env.Append (CXXFLAGS = '-Wconversion')
-if env['verbose']:
- env['__verbose'] = '--verbose'
-
-# Hmm
-#env.Append (ENV = {'PKG_CONFIG_PATH' : string.join (env['PKG_CONFIG_PATH'],
-# os.pathsep),
-# 'LD_LIBRARY_PATH' : string.join (env['LD_LIBRARY_PATH'],
-# os.pathsep),
-# 'GUILE_LOAD_PATH' : string.join (env['GUILE_LOAD_PATH'],
-# os.pathsep), })
-
-outdir = os.path.join (Dir (env['build']).abspath, env['out'])
-
-# This is interesting, version.hh is generated automagically, just in
-# time. Is this a .h /.hh issue? It seems to be, using config.hh (in
-# flower/file-name.cc) works. Bug report to SCons or rename to
-# config.hh or both?
-# config_h = os.path.join (outdir, 'config.hh')
-config_h = os.path.join (outdir, 'config.h')
-version_h = os.path.join (outdir, 'version.hh')
-
-env.Alias ('config', config_cache)
-
-
-## Explicit dependencies
-
-# Without target arguments, build lily only
-if not COMMAND_LINE_TARGETS:
- env.Default ('lily')
-env.Alias ('all', '.')
-env.Alias ('doc',
- ['Documentation',
- 'Documentation/user',
- 'Documentation/topdocs'])
-
-env.Depends (['lily', 'flower', 'all', '.'], config_h)
-env.Depends ('doc', ['lily', 'mf'])
-env.Depends ('input', ['lily', 'mf'])
-env.Depends ('doc', ['lily', 'mf'])
-
def list_sort (lst):
sorted = lst
sorted.sort ()
return sorted
+
def configure (target, source, env):
- vre = re.compile ('^.*[^-.0-9]([0-9][0-9]*\.[0-9][.0-9]*).*$', re.DOTALL)
+ vre = re.compile ('^.*[^-.0-9]([0-9][0-9]*\.[0-9]([.0-9]*[0-9])*).*$',
+ re.DOTALL)
def get_version (program):
- command = '(%(program)s --version || %(program)s -V) 2>&1' % vars ()
+ command = '(pkg-config --modversion %(program)s || %(program)s --version || %(program)s -V) 2>&1' % vars ()
pipe = os.popen (command)
output = pipe.read ()
if pipe.close ():
return None
v = re.sub (vre, '\\1', output)
+ if v[-1] == '\n':
+ v = v[:-1]
return string.split (v, '.')
- def test_program (lst, program, minimal, description, package):
+ def test_version (lst, full_name, minimal, description, package):
+ program = os.path.basename (full_name)
sys.stdout.write ('Checking %s version... ' % program)
actual = get_version (program)
if not actual:
print 'not found'
lst.append ((description, package, minimal, program,
'not installed'))
- return
- sys.stdout.write (string.join (actual, '.'))
- sys.stdout.write ('\n')
- if actual < string.split (minimal, '.'):
+ return 0
+ print string.join (actual, '.')
+ if map (string.atoi, actual) \
+ < map (string.atoi, string.split (minimal, '.')):
lst.append ((description, package, minimal, program,
string.join (actual, '.')))
+ return 0
+ return 1
+
+ def test_program (lst, program, minimal, description, package):
+ key = program.upper ()
+ if key.find ('+-'):
+ key = re.sub ('\+', 'X', key)
+ key = re.sub ('-', '_', key)
+ sys.stdout.write ('Checking for %s ... ' % program)
+ if env.has_key (key):
+ f = env[key]
+ sys.stdout.write ('(cached) ')
+ else:
+ f = WhereIs (program)
+ env[key] = f
+ if not f:
+ print 'not found'
+ lst.append ((description, package, minimal, program,
+ 'not installed'))
+ return 0
+ print f
+ return test_version (lst, program, minimal, description, package)
+
+ def test_lib (lst, program, minimal, description, package):
+ # FIXME: test for Debian or RPM (or -foo?) based dists
+ # to guess (or get correct!: apt-cache search?)
+ # package name.
+ #if os.system ('pkg-config --atleast-version=0 freetype2'):
+ # barf
+ if test_version (lst, program, minimal, description,
+ 'lib%(package)s-dev or %(package)s-devel'
+ % vars ()):
+ env.ParseConfig ('pkg-config --cflags --libs %(program)s'
+ % vars ())
+ return 1
+ return 0
required = []
+ test_program (required, 'bash', '2.0', 'Bash', 'bash')
test_program (required, 'gcc', '2.8', 'GNU C compiler', 'gcc')
test_program (required, 'g++', '3.0.5', 'GNU C++ compiler', 'g++')
- test_program (required, 'python', '2.1', 'Python (www.python.org)', 'python')
test_program (required, 'guile-config', '1.6', 'GUILE development',
'libguile-dev or guile-devel')
- # Do not use bison 1.50 and 1.75.
- test_program (required, 'bison', '1.25', 'Bison -- parser generator',
- 'bison')
- test_program (required, 'flex', '0.0', 'Flex -- lexer generator', 'flex')
-
+ test_program (required, 'mf', '0.0', 'Metafont', 'tetex-bin')
+ test_program (required, 'mftrace', '1.1.9',
+ 'mftrace (http://xs4all.nl/~hanwen/mftrace)', 'mftrace')
+ test_program (required, 'potrace', '0.0', 'Potrace', 'potrace')
+ test_program (required, 'python', '2.1', 'Python (www.python.org)',
+ 'python')
+ test_program (required, 'sh', '0.0', 'Bourne shell', 'sh')
optional = []
- test_program (optional, 'makeinfo', '4.7', 'Makeinfo tool', 'texinfo')
- test_program (optional, 'guile', '1.6', 'GUILE scheme',
- 'libguile-dev or guile-devel')
- test_program (optional, 'mftrace', '1.0.27', 'Metafont tracing Type1',
+ # Do not use bison 1.50 and 1.75.
+ #test_program (optional, 'foo', '2.0', 'Foomatic tester', 'bar')
+ test_program (optional, 'bison', '1.25', 'Bison -- parser generator',
+ 'bison')
+ test_program (optional, 'dvips', '0.0', 'Dvips', 'tetex-bin')
+ test_program (optional, 'fontforge', '0.0.20041224', 'FontForge',
+ 'fontforge')
+ test_program (optional, 'flex', '0.0', 'Flex -- lexer generator',
+ 'flex')
+ test_program (optional, 'guile', '1.6', 'GUILE scheme', 'guile')
+ test_program (optional, 'gs', '8.14',
+ 'Ghostscript PostScript interpreter',
+ 'gs or gs-afpl or gs-esp or gs-gpl')
+ test_program (optional, 'mftrace', '1.1.0', 'Metafont tracing Type1',
'mftrace')
+ test_program (optional, 'makeinfo', '4.7', 'Makeinfo tool', 'texinfo')
test_program (optional, 'perl', '4.0',
- 'Perl practical efficient readonly language', 'perl')
- #test_program (optional, 'foo', '2.0', 'Foomatic tester', 'bar')
+ 'Perl practical efficient readonly language', 'perl')
+ #test_program (optional, 'ps2pdf', '0.0', 'Ps2pdf', 'gs')
def CheckYYCurrentBuffer (context):
context.Message ('Checking for yy_current_buffer... ')
context.Result (ret)
return ret
+ def CheckLibkpathseaSo (context):
+ saveCFLAGS = []
+ if context.env.has_key ('CFLAGS'):
+ saveCFLAGS = context.env['CFLAGS']
+ CFLAGS_shared_no_debugging = filter (lambda x: x != '-g',
+ saveCFLAGS)\
+ + ['-shared']
+ # FIXME: how does this work, with scons
+ context.env.Replace (CFLAGS = CFLAGS_shared_no_debugging)
+ #context.env.Replace (CFLAGS = '')
+ #context.env.Append (CFLAGS = ['-shared'])
+ context.Message ('Checking for libkpathsea... ')
+ ret = conf.TryLink ('''#include <kpathsea/kpathsea.h>
+ int main ()
+ {
+ kpse_var_expand ("\$TEXMF");
+ return 0;
+ }
+ ''', '.c')
+ context.env.Replace (CFLAGS = saveCFLAGS)
+ # FIXME: this prints 'ok' already
+ context.Result (ret)
+ if not ret:
+ return 0
+
+ sys.stdout.write ('Checking for libkpathsea.so... ')
+ testfile = str (context.sconf.lastTarget)
+ shared_size = os.path.getsize (testfile)
+ ret = shared_size < 40000
+ if ret:
+ print 'ok'
+ else:
+ print 'no'
+ return ret
+
conf = Configure (env, custom_tests = { 'CheckYYCurrentBuffer'
- : CheckYYCurrentBuffer })
+ : CheckYYCurrentBuffer,
+ 'CheckLibkpathseaSo'
+ : CheckLibkpathseaSo })
defines = {
- 'DIRSEP' : "'/'",
- 'PATHSEP' : "':'",
- 'TOPLEVEL_VERSION' : '"' + version + '"',
- 'PACKAGE': '"' + package.name + '"',
- 'DATADIR' : '"' + sharedir + '"',
- 'LILYPOND_DATADIR' : '"' + sharedir_package + '"',
- 'LOCAL_LILYPOND_DATADIR' : '"' + sharedir_package_version + '"',
- 'LOCALEDIR' : '"' + localedir + '"',
+ 'DIRSEP' : "'%s'" % os.sep,
+ 'PATHSEP' : "'%s'" % os.pathsep,
+ 'PACKAGE': '"%s"' % package.name,
+ 'DATADIR' : '"%s"' % sharedir,
+ 'PACKAGE_DATADIR' : '"%s"' % sharedir_package,
+ 'LOCALEDIR' : '"%s"' %localedir,
}
conf.env.Append (DEFINES = defines)
command = r"""python -c 'import sys; sys.stdout.write ("%s/include/python%s" % (sys.prefix, sys.version[:3]))'""" #"
- PYTHON_INCLUDE = os.popen (command).read ()
- env.Append (CPPPATH = PYTHON_INCLUDE)
-
- headers = ('sys/stat.h', 'assert.h', 'kpathsea/kpathsea.h', 'Python.h')
+ PYTHON_INCLUDE = os.popen (command).read ()#[:-1]
+ if env['fast']:
+ env.Append (CCFLAGS = ['-I%s' % PYTHON_INCLUDE])
+ else:
+ env.Append (CPPPATH = [PYTHON_INCLUDE])
+
+ headers = ('sys/stat.h', 'assert.h', 'kpathsea/kpathsea.h', 'libio.h',
+ 'Python.h')
for i in headers:
if conf.CheckCHeader (i):
key = re.sub ('[./]', '_', 'HAVE_' + string.upper (i))
key = re.sub ('[./]', '_', 'HAVE_' + string.upper (i))
conf.env['DEFINES'][key] = 1
- functions = ('gettext', 'isinf', 'memmem', 'snprintf', 'vsnprintf')
+ functions = ('fopencookie', 'funopen',
+ 'gettext', 'isinf', 'memmem', 'snprintf', 'vsnprintf')
for i in functions:
if 0 or conf.CheckFunc (i):
key = re.sub ('[./]', '_', 'HAVE_' + string.upper (i))
if conf.CheckYYCurrentBuffer ():
conf.env['DEFINES']['HAVE_FLEXLEXER_YY_CURRENT_BUFFER'] = 1
+ if conf.CheckLibkpathseaSo ():
+ conf.env['DEFINES']['HAVE_LIBKPATHSEA_SO'] = '1'
+
if conf.CheckLib ('dl'):
pass
if conf.CheckLib ('kpathsea', 'kpse_find_tfm'):
conf.env['DEFINES']['HAVE_KPSE_FIND_TFM'] = '1'
+ if env['fast']:
+ cpppath = []
+ if env.has_key ('CPPPATH'):
+ cpppath = env['CPPPATH']
+
+ ## FIXME: linkage, check for libguile.h and scm_boot_guile
#this could happen after flower...
env.ParseConfig ('guile-config compile')
+ test_program (required, 'pkg-config', '0.9.0',
+ 'pkg-config library compile manager', 'pkg-config')
+ if test_lib (required, 'freetype2', '0.0',
+ 'Development files for FreeType 2 font engine',
+ 'freetype6'):
+ conf.env['DEFINES']['HAVE_FREETYPE2'] = '1'
+
+ if test_lib (required, 'pangoft2', '1.6.0',
+ 'Development files for pango, with FreeType2',
+ 'pango1.0'):
+ conf.env['DEFINES']['HAVE_PANGO_FT2'] = '1'
+ conf.env['DEFINES']['HAVE_PANGO16'] = '1'
+
+ if test_lib (optional, 'fontconfig', '2.2.0',
+ 'Development files for fontconfig', 'fontconfig1'):
+ conf.env['DEFINES']['HAVE_FONTCONFIG'] = '1'
+
#this could happen only for compiling pango-*
if env['gui']:
- env.ParseConfig ('pkg-config --cflags --libs gtk+-2.0')
- env.ParseConfig ('pkg-config --cflags --libs pango')
+ test_lib (required, 'gtk+-2.0', '2.4.0',
+ 'Development files for GTK+', 'gtk2.0')
+ if test_lib (required, 'pango', '1.6.0',
+ 'Development files for pango', 'pango1.0'):
+ conf.env['DEFINES']['HAVE_PANGO16'] = '1'
+
if conf.CheckCHeader ('pango/pangofc-fontmap.h'):
conf.env['DEFINES']['HAVE_PANGO_PANGOFC_FONTMAP_H'] = '1'
-
- if conf.CheckLib ('pango-1.0',
- 'pango_fc_font_map_add_decoder_find_func'):
- conf.env['DEFINES']['HAVE_PANGO_CVS'] = '1'
- conf.env['DEFINES']['HAVE_PANGO_FC_FONT_MAP_ADD_DECODER_FIND_FUNC'] = '1'
+ if env['fast']:
+ # Using CCFLAGS = -I<system-dir> rather than CPPPATH = [
+ # <system-dir>] speeds up SCons
+ env['CCFLAGS'] += map (lambda x: '-I' + x,
+ env['CPPPATH'][len (cpppath):])
+ env['CPPPATH'] = cpppath
if required:
print
print 'Please install required packages'
for i in required:
print '%s: %s-%s or newer (found: %s %s)' % i
- sys.exit (1)
+ Exit (1)
if optional:
print
for i in list_sort (env['DEFINES'].keys ()):
config.write ('#define %s %s\n' % (i, env['DEFINES'][i]))
config.close ()
-
-if os.path.exists (config_cache) and 'config' in COMMAND_LINE_TARGETS:
- os.unlink (config_cache)
-# WTF?
-# scons: *** Calling Configure from Builders is not supported.
-# env.Command (config_cache, None, configure)
-if not os.path.exists (config_cache) \
- or (os.stat ('SConstruct')[stat.ST_MTIME]
- > os.stat (config_cache)[stat.ST_MTIME]):
- env = configure (None, None, env)
-
- # We 'should' save opts each time, but that makes config.h
- # always out of date, and that triggers recompiles, even when
- # using checksums?
- if FOOSUMS: #not env['checksums']:
- ## FIXME: Is this smart, using option cache for saving
- ## config.cache? I cannot seem to find the official method.
- map (lambda x: opts.AddOptions ((x,)), config_vars)
- opts.Save (config_cache, env)
- env.Command (config_h, config_cache, config_header)
+env.Command (config_hh, config_cache, config_header)
# hmm?
def xuniquify (lst):
n -= 1
return lst
-for i in config_vars:
- if env.has_key (i) and type (env[i]) == type ([]):
- env[i] = uniquify (env[i])
+def uniquify_config_vars (env):
+ for i in config_vars:
+ if env.has_key (i) and type (env[i]) == type ([]):
+ env[i] = uniquify (env[i])
-if not FOOSUMS: #env['checksums']:
+def save_config_cache (env):
## FIXME: Is this smart, using option cache for saving
## config.cache? I cannot seem to find the official method.
- map (lambda x: opts.AddOptions ((x,)), config_vars)
-
+ uniquify_config_vars (env)
opts.Save (config_cache, env)
- env.Command (config_h, config_cache, config_header)
-env.Command (version_h, '#/VERSION',
- '$PYTHON ./stepmake/bin/make-version.py VERSION > $TARGET')
+ if 'config' in COMMAND_LINE_TARGETS:
+ sys.stdout.write ('\n')
+ sys.stdout.write ('LilyPond configured')
+ sys.stdout.write ('\n')
+ sys.stdout.write ('Now run')
+ sys.stdout.write ('\n')
+ sys.stdout.write (' scons [TARGET|DIR]...')
+ sys.stdout.write ('\n')
+ sys.stdout.write ('\n')
+ sys.stdout.write ('Examples:')
+ sys.stdout.write ('\n')
+ sys.stdout.write (' scons lily # build lilypond')
+ sys.stdout.write ('\n')
+ sys.stdout.write (' scons all # build everything')
+ sys.stdout.write ('\n')
+ sys.stdout.write (' scons doc # build documentation')
+ sys.stdout.write ('\n')
+ ## TODO
+ ## sys.stdout.write (' scons prefix=/usr DESTDIR=/tmp/pkg all install')
+ ## sys.stdout.write ('\n')
+ Exit (0)
+ elif not env['checksums']:
+ # When using timestams, config.hh is NEW. The next
+ # build triggers recompilation of everything. Exiting
+ # here makes SCons use the actual timestamp for config.hh
+ # and prevents recompiling everything the next run.
+ command = sys.argv[0] + ' ' + string.join (COMMAND_LINE_TARGETS)
+ sys.stdout.write ('Running %s ... ' % command)
+ sys.stdout.write ('\n')
+ s = os.system (command)
+ Exit (s)
-absbuild = Dir (env['build']).abspath
-run_prefix = os.path.join (absbuild, os.path.join (env['out'], 'usr'))
+# WTF?
+# scons: *** Calling Configure from Builders is not supported.
+# env.Command (config_cache, None, configure)
+if not os.path.exists (config_cache) \
+ or (os.stat ('SConstruct')[stat.ST_MTIME]
+ > os.stat (config_cache)[stat.ST_MTIME]):
+ env = configure (None, None, env)
+ save_config_cache (env)
+elif env['checksums']:
+ # just save everything
+ save_config_cache (env)
-# post-config environment update
+#urg how does #/ subst work?
+Export ('env')
+SConscript ('buildscripts/builder.py')
+
+env.PrependENVPath ('PATH',
+ os.path.join (env['absbuild'], env['out'], 'usr/bin'))
+
+LILYPONDPREFIX = os.path.join (run_prefix, 'share/lilypond/', version)
+
+env.Append (ENV = {
+ #'LILYPONDPREFIX' : os.path.join (run_prefix, 'share/lilypond/', version),
+ 'LILYPONDPREFIX' : LILYPONDPREFIX,
+ # ugh, can't use LILYPONDPREFIX here
+ #'TEXMF' : '{' + os.path.join (run_prefix, 'share/lilypond/', version)\
+ #+ ',' \
+ 'TEXMF' : '{$LILYPONDPREFIX,'
+ + os.popen ('kpsexpand \$TEXMF').read ()[:-1] + '}',
+ })
+
+BUILD_ABC2LY = '${set__x}$PYTHON $srcdir/scripts/abc2ly.py'
+BUILD_LILYPOND = '$absbuild/lily/$out/lilypond ${__verbose}'
+BUILD_LILYPOND_BOOK = '$PYTHON $srcdir/scripts/lilypond-book.py ${__verbose}'
+
+
+# post-option environment-update
env.Append (
- absbuild = absbuild,
- run_prefix = run_prefix,
- LILYPONDPREFIX = os.path.join (run_prefix, 'share/lilypond'),
-
- LIBPATH = [os.path.join (absbuild, 'flower', env['out']),],
- CPPPATH = [outdir, '#',],
- LILYPOND_BIN = os.path.join (absbuild, 'lily', env['out'],
- 'lilypond-bin'),
- LILYPOND_BOOK_PATH = ['.', '#/input', '#/input/regression',
- '#/input/test', '#/input/tutorial',
- os.path.join (absbuild, 'mf', env['out']),
- '#/Documentation/user',
- os.path.join (absbuild, 'Documentation',
- env['out']),
- os.path.join (absbuild, 'Documentation/user',
- env['out']),
- ],
- MAKEINFO_PATH = ['.', '#/Documentation/user',
- os.path.join (absbuild, 'Documentation/user',
- env['out'])],
+ bindir = bindir,
+ sharedir = sharedir,
+ lilypond_datadir = sharedir_package,
+ localedir = localedir,
+ local_lilypond_datadir = sharedir_package_version,
+ lilypondprefix = lilypondprefix,
+ sharedir_package = sharedir_package,
+ sharedir_doc_package = sharedir_doc_package,
+ sharedir_package_version = sharedir_package_version,
+
+ # global build verbosity switch
+ __verbose = ' --verbose',
+
+ LILYPOND = BUILD_LILYPOND,
+ ABC2LY = BUILD_ABC2LY,
+ LILYPOND_BOOK = BUILD_LILYPOND_BOOK,
+ LILYPOND_BOOK_FORMAT = 'texi-html',
+ MAKEINFO_FLAGS = '--css-include=$srcdir/Documentation/texinfo.css',
+ # should not be necessary
+ # PYTHONPATH = ['$absbuild/python/$out'],
+ TEXI2DVI_PAPERSIZE = '@afourpaper',
+ TEXI2DVI_FLAGS = [ '-t$TEXI2DVI_PAPERSIZE'],
+ DVIPS_PAPERSIZE = 'a4',
+ DVIPS_FLAGS = ['-t$DVIPS_PAPERSIZE',
+ '-u+lilypond.map',
+ '-u+ec-mftrace.map'],
+ PSPDF_FLAGS = ['-sPAPERSIZE=$DVIPS_PAPERSIZE'],
)
-Export ('env')
-SConscript ('buildscripts/builder.py')
+env.Append (CCFLAGS = ['-pipe', '-Wno-pmf-conversions'])
+if env['debugging']:
+ env.Append (CCFLAGS = ['-g'])
+if env['optimising']:
+ env.Append (CCFLAGS = '-O2')
+ env.Append (CXXFLAGS = ['-DSTRING_UTILS_INLINED'])
+if env['warnings']:
+ env.Append (CCFLAGS = ['-W', '-Wall'])
+ env.Append (CXXFLAGS = ['-Wconversion'])
+
+# ugr,huh?
+env.Append (LINKFLAGS = ['-Wl,--export-dynamic'])
+# FIXME: ParseConfig ignores -L flag?
+env.Append (LINKFLAGS = ['-L/usr/X11R6/lib'])
+
+if env['verbose']:
+ env['__verbose'] = ' --verbose'
+ env['set__x'] = 'set -x;'
+
+
+## Explicit target and dependencies
+
+if 'clean' in COMMAND_LINE_TARGETS:
+ # ugh: prevent reconfigure instead of clean
+ os.system ('touch %s' % config_cache)
+
+ command = sys.argv[0] + ' -c .'
+ sys.stdout.write ('Running %s ... ' % command)
+ sys.stdout.write ('\n')
+ s = os.system (command)
+ if os.path.exists (config_cache):
+ os.unlink (config_cache)
+ Exit (s)
+
+if 'sconsclean' in COMMAND_LINE_TARGETS:
+ command = 'rm -rf scons.cache $(find . -name ".scon*")'
+ s = os.system (command)
+ if os.path.exists (config_cache):
+ os.unlink (config_cache)
+ Exit (s)
+
+if 'realclean' in COMMAND_LINE_TARGETS:
+ command = 'rm -rf $(find . -name "out-scons" -o -name ".scon*")'
+ sys.stdout.write ('Running %s ... ' % command)
+ sys.stdout.write ('\n')
+ s = os.system (command)
+ if os.path.exists (config_cache):
+ os.unlink (config_cache)
+ Exit (s)
+
+# Declare SConscript phonies
+env.Alias ('minimal', config_cache)
+env.Alias ('mf-essential', config_cache)
+
+env.Alias ('minimal', ['lily', 'mf-essential'])
+env.Alias ('all', ['minimal', 'mf', '.'])
+# Do we want the doc/web separation?
+env.Alias ('doc',
+ ['Documentation',
+ 'Documentation/user',
+ 'Documentation/topdocs',
+ 'Documentation/bibliography',
+ 'input'])
+
+# Without target arguments, do minimal build
+if not COMMAND_LINE_TARGETS:
+ env.Default (['minimal'])
+
+# GNU Make rerouting compat:
+env.Alias ('web', 'doc')
+
+env.Command (version_hh, '#/VERSION',
+ '$PYTHON ./stepmake/bin/make-version.py VERSION > $TARGET')
+
+# post-config environment update
+env.Append (
+ run_prefix = run_prefix,
+ LILYPONDPREFIX = LILYPONDPREFIX,
+
+ # FIXME: move to lily/SConscript?
+ LIBPATH = [os.path.join (absbuild, 'flower', env['out']),
+ os.path.join (absbuild, 'kpath-guile', env['out']),],
+ CPPPATH = [outdir, ],
+ LILYPOND_PATH = ['.',
+ '$srcdir/input',
+ '$srcdir/input/regression',
+ '$srcdir/input/test',
+ '$srcdir/input/tutorial',
+ '$srcdir/Documentation/user',
+ '$absbuild/mf/$out',
+# os.path.join (absbuild, 'Documentation',
+# env['out']),
+# os.path.join (absbuild, 'Documentation/user',
+# env['out']),
+ ],
+ MAKEINFO_PATH = ['.', '$srcdir/Documentation/user',
+ '$absbuild/Documentation/user/$out'],
+ )
def symlink_tree (target, source, env):
def mkdirs (dir):
frm = os.path.join (srcdir, src[1:])
else:
depth = len (string.split (dir, '/'))
- frm = os.path.join ('../' * depth, src, env['out'])
+ if src.find ('@') > -1:
+ frm = os.path.join ('../' * depth,
+ string.replace (src, '@',
+ env['out']))
+ else:
+ frm = os.path.join ('../' * depth, src,
+ env['out'])
+ if src[-1] == '/':
+ frm = os.path.join (frm, os.path.basename (dst))
+ if env['verbose']:
+ print 'ln -s %s -> %s' % (frm, os.path.basename (dst))
os.symlink (frm, os.path.basename (dst))
shutil.rmtree (run_prefix)
prefix = os.path.join (env['out'], 'usr')
- map (lambda x: symlink (x[0], os.path.join (prefix, x[1])),
- (('python', 'lib/lilypond/python'),
- # UGHR, lilypond.py uses lilypond-bin from PATH
- ('lily', 'bin'),
- ('#mf', 'share/lilypond/fonts/mf'),
- ('mf', 'share/lilypond/fonts/afm'),
- ('mf', 'share/lilypond/fonts/tfm'),
- ('mf', 'share/lilypond/fonts/type1'),
- ('#tex', 'share/lilypond/tex/source'),
- ('mf', 'share/lilypond/tex/generate'),
- ('#ly', 'share/lilypond/ly'),
- ('#scm', 'share/lilypond/scm'),
- ('#ps', 'share/lilypond/ps'),
- ('elisp', 'share/lilypond/elisp')))
+ map (lambda x: symlink (x[0], os.path.join (prefix,
+ x[1] % {'ver' : version})),
+ # ^# := source dir
+ # @ := out
+ # /$ := add dst file_name
+ (('python', 'lib/lilypond/python'),
+ # ugh
+ ('python', 'share/lilypond/%(ver)s/python'),
+ ('lily/', 'bin/lilypond'),
+ ('scripts/', 'bin/convert-ly'),
+ ('scripts/', 'bin/lilypond-book'),
+ ('scripts/', 'bin/ps2png'),
+ ('mf', 'share/lilypond/%(ver)s/dvips/mf-out'),
+ ('#ps', 'share/lilypond/%(ver)s/dvips/ps'),
+ ('#ps', 'share/lilypond/%(ver)s/tex/music-drawing-routines.ps'),
+ ('mf', 'share/lilypond/%(ver)s/otf'),
+ ('mf', 'share/lilypond/%(ver)s/tfm'),
+ ('tex', 'share/lilypond/%(ver)s/tex/enc'),
+ ('#mf', 'share/lilypond/%(ver)s/fonts/mf'),
+ ('mf', 'share/lilypond/%(ver)s/fonts/map'),
+ ('mf', 'share/lilypond/%(ver)s/fonts/otf'),
+ ('mf', 'share/lilypond/%(ver)s/fonts/tfm'),
+ ('mf', 'share/lilypond/%(ver)s/fonts/type1'),
+ ('#tex', 'share/lilypond/%(ver)s/tex/source'),
+ ('tex', 'share/lilypond/%(ver)s/tex/tex-out'),
+ ('mf', 'share/lilypond/%(ver)s/tex/mf-out'),
+ ('#ly', 'share/lilypond/%(ver)s/ly'),
+ ('#scm', 'share/lilypond/%(ver)s/scm'),
+ ('#scripts', 'share/lilypond/%(ver)s/scripts'),
+ ('#ps', 'share/lilypond/%(ver)s/ps'),
+ ('po/@/nl.mo', 'share/locale/nl/LC_MESSAGES/lilypond.mo'),
+ ('elisp', 'share/lilypond/%(ver)s/elisp')))
+
+ print "FIXME: BARF BARF BARF"
+ os.chdir (absbuild)
+ out = env['out']
+ ver = version
+ prefix = os.path.join (env['out'], 'usr/share/lilypond/%(ver)s/fonts'
+ % vars ())
+ for ext in ('enc', 'map', 'otf', 'svg', 'tfm', 'pfa'):
+ dir = os.path.join (absbuild, prefix, ext)
+ os.system ('rm -f ' + dir)
+ mkdirs (dir)
+ os.chdir (dir)
+ os.system ('ln -s ../../../../../../../mf/%(out)s/*.%(ext)s .'
+ % vars ())
os.chdir (srcdir)
-if env['debugging']:
+if 1: #env['debugging']:
stamp = os.path.join (run_prefix, 'stamp')
- env.Command (stamp, 'SConstruct', [symlink_tree, 'touch $TARGET'])
+ env.Command (stamp, ['#/SConstruct', '#/VERSION'],
+ [symlink_tree, 'touch $TARGET'])
env.Depends ('lily', stamp)
-
+
#### dist, tar
def plus (a, b):
a + b
return line[0] == '/' and line[-2] == '/'
def cvs_dirs (dir):
- ENTRIES = os.path.join (dir, 'CVS/Entries')
- if not os.path.exists (ENTRIES):
+ entries = os.path.join (dir, 'CVS/Entries')
+ if not os.path.exists (entries):
return []
- entries = open (ENTRIES).readlines ()
+ entries = open (entries).readlines ()
dir_entries = filter (cvs_entry_is_dir, entries)
dirs = map (lambda x: os.path.join (dir, x[2:x[2:].index ('/')+3]),
dir_entries)
return dirs + map (cvs_dirs, dirs)
def cvs_files (dir):
- ENTRIES = os.path.join (dir, 'CVS/Entries')
- entries = open (ENTRIES).readlines ()
+ entries = os.path.join (dir, 'CVS/Entries')
+ if not os.path.exists (entries):
+ return []
+ entries = open (entries).readlines ()
file_entries = filter (cvs_entry_is_file, entries)
files = map (lambda x: x[1:x[1:].index ('/')+1], file_entries)
return map (lambda x: os.path.join (dir, x), files)
-#subdirs = reduce (lambda x, y: x + y, cvs_dirs ('.'))
-#print `subdirs`
+def flatten (tree, lst):
+ if type (tree) == type ([]):
+ for i in tree:
+ if type (i) == type ([]):
+ flatten (i, lst)
+ else:
+ lst.append (i)
+ return lst
+
+if os.path.isdir ('%(srcdir)s/CVS' % vars ()):
+ subdirs = flatten (cvs_dirs ('.'), [])
+else:
+ # ugh
+ command = 'cd %(srcdir)s \
+ && find . -name SConscript | sed s@/SConscript@@' % vars ()
+ subdirs = string.split (os.popen (command).read ())
+
+if env['fast']\
+ and 'all' not in COMMAND_LINE_TARGETS\
+ and 'doc' not in COMMAND_LINE_TARGETS\
+ and 'web' not in COMMAND_LINE_TARGETS\
+ and 'install' not in COMMAND_LINE_TARGETS\
+ and 'clean' not in COMMAND_LINE_TARGETS:
+ subdirs = ['lily',
+ 'flower',
+ 'kpath-guile',
+ 'mf',
+ 'python',
+ ]
+
+if os.path.isdir ('%(srcdir)s/CVS' % vars ()):
+ src_files = reduce (lambda x, y: x + y, map (cvs_files, subdirs))
+else:
+ src_files = ['foobar']
+
readme_files = ['AUTHORS', 'README', 'INSTALL', 'NEWS']
-foo = map (lambda x: env.TXT (x + '.txt',
- os.path.join ('Documentation/topdocs', x)),
- readme_files)
txt_files = map (lambda x: x + '.txt', readme_files)
-src_files = reduce (lambda x, y: x + y, map (cvs_files, subdirs))
-tar_base = package.name + '-' + version
-tar_name = tar_base + '.tar.gz'
-ball_prefix = os.path.join (outdir, tar_base)
-tar_ball = os.path.join (outdir, tar_name)
-
-dist_files = src_files + txt_files
-ball_files = map (lambda x: os.path.join (ball_prefix, x), dist_files)
-map (lambda x: env.Depends (tar_ball, x), ball_files)
-map (lambda x: env.Command (os.path.join (ball_prefix, x), x,
- 'ln $SOURCE $TARGET'), dist_files)
-tar = env.Command (tar_ball, src_files,
- 'tar czf $TARGET -C $TARGET.dir %s' % tar_base)
-env.Alias ('tar', tar)
-
-dist_ball = os.path.join (package.release_dir, tar_name)
-env.Command (dist_ball, tar_ball,
- 'if [ -e $SOURCE -a -e $TARGET ]; then rm $TARGET; fi;' \
- + 'ln $SOURCE $TARGET')
-env.Depends ('dist', dist_ball)
-patch_name = os.path.join (outdir, tar_base + '.diff.gz')
-patch = env.PATCH (patch_name, tar_ball)
-env.Depends (patch_name, dist_ball)
-env.Alias ('release', patch)
+
+#
+# speeds up build by +- 5%
+#
+if not env['fast']:
+ foo = map (lambda x: env.TXT (x + '.txt',
+ os.path.join ('Documentation/topdocs', x)),
+ readme_files)
+ tar_base = package.name + '-' + version
+ tar_name = tar_base + '.tar.gz'
+ ball_prefix = os.path.join (outdir, tar_base)
+ tar_ball = os.path.join (outdir, tar_name)
+
+ dist_files = src_files + txt_files
+ ball_files = map (lambda x: os.path.join (ball_prefix, x), dist_files)
+ map (lambda x: env.Depends (tar_ball, x), ball_files)
+ map (lambda x: env.Command (os.path.join (ball_prefix, x), x,
+ 'ln $SOURCE $TARGET'), dist_files)
+ tar = env.Command (tar_ball, src_files,
+ ['rm -f $$(find $TARGET.dir -name .sconsign)',
+ 'tar czf $TARGET -C $TARGET.dir %s' % tar_base,])
+ env.Alias ('tar', tar)
+
+ dist_ball = os.path.join (package.release_dir, tar_name)
+ env.Command (dist_ball, tar_ball,
+ 'if [ -e $SOURCE -a -e $TARGET ]; then rm $TARGET; fi;' \
+ + 'ln $SOURCE $TARGET')
+ env.Depends ('dist', dist_ball)
+ patch_name = os.path.join (outdir, tar_base + '.diff.gz')
+ patch = env.PATCH (patch_name, tar_ball)
+ env.Depends (patch_name, dist_ball)
+ env.Alias ('release', patch)
+
+#### web
+if not env['fast']:
+ web_base = os.path.join (outdir, 'web')
+ web_ball = web_base + '.tar.gz'
+ env['footify'] = 'MAILADDRESS=bug-lilypond@gnu.org $PYTHON stepmake/bin/add-html-footer.py --name=lilypond --version=$TOPLEVEL_VERSION'
+ web_ext = ['.html', '.ly', '.midi', '.pdf', '.png', '.ps.gz', '.txt',]
+ web_path = '-path "*/$out/*"' + string.join (web_ext, ' -or -path "*/$out/*"') + '-or -type l'
+ env['web_path'] = web_path
+ web_list = os.path.join (outdir, 'weblist')
+ # compatible make heritits
+ # fixme: generate in $outdir is cwd/builddir
+ env.Command (web_list,
+ ## Adding 'doc' dependency is correct, but takes
+ ## > 5min extra if you have a peder :-)
+ #'doc',
+
+ '#/VERSION',
+ ['$PYTHON buildscripts/mutopia-index.py -o examples.html ./',
+ 'cd $absbuild && $footify $$(find . -name "*.html" -print)',
+ 'cd $absbuild && rm -f $$(find . -name "*.html~" -print)',
+ 'cd $absbuild && find Documentation input $web_path \
+ > $TARGET',
+ '''echo '<META HTTP-EQUIV="refresh" content="0;URL=Documentation/out-www/index.html">' > $absbuild/index.html''',
+ '''echo '<html><body>Redirecting to the documentation index...</body></html>' >> $absbuild/index.html''',
+ 'cd $absbuild && ls *.html >> $TARGET',])
+ env.Command (web_ball, web_list,
+ ['cat $SOURCE | tar -C $absbuild -czf $TARGET -T -',])
+ #env.Alias ('web', web_ball)
+ www_base = os.path.join (outdir, 'www')
+ www_ball = www_base + '.tar.gz'
+ env.Command (www_ball, web_ball,
+ ['rm -rf $out/tmp',
+ 'mkdir -p $absbuild/$out/tmp',
+ 'tar -C $absbuild/$out/tmp -xzf $SOURCE',
+ 'cd $absbuild/$out/tmp && for i in $$(find . -name "$out"); '
+ + ' do mv $$i $$(dirname $$i)/out-www; done',
+ 'tar -C $absbuild/$out/tmp -czf $TARGET .'])
+ env.Alias ('web', www_ball)
+
+#### tags
+env.Append (
+ ETAGSFLAGS = """--regex='{c++}/^LY_DEFINE *(\([^,]+\)/\\1/' \
+ --regex='{c++}/^LY_DEFINE *([^"]*"\([^"]+\)"/\\1/'""")
+code_ext = ['.cc', '.hh', '.scm', '.tcc',]
+env.Command ('TAGS', filter (lambda x: os.path.splitext (x)[1] in code_ext,
+ src_files),
+ 'etags $ETAGSFLAGS $SOURCES')
+
+# Note: SConscripts are only needed in directories where something needs
+# to be done, building or installing
for d in subdirs:
if os.path.exists (os.path.join (d, 'SConscript')):
b = os.path.join (env['build'], d, env['out'])
if os.path.abspath (b) != os.path.abspath (d):
env.BuildDir (b, d, duplicate = 0)
SConscript (os.path.join (b, 'SConscript'))
+