mapnik/scons/scons-local-0.97.0d20071212/SCons/Scanner/Prog.py

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#
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# Copyright (c) 2001, 2002, 2003, 2004, 2005, 2006, 2007 The SCons Foundation
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#
# Permission is hereby granted, free of charge, to any person obtaining
# a copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish,
# distribute, sublicense, and/or sell copies of the Software, and to
# permit persons to whom the Software is furnished to do so, subject to
# the following conditions:
#
# The above copyright notice and this permission notice shall be included
# in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
# KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
# WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
#
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__revision__ = "src/engine/SCons/Scanner/Prog.py 2523 2007/12/12 09:37:41 knight"
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import string
import SCons.Node
import SCons.Node.FS
import SCons.Scanner
import SCons.Util
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# global, set by --debug=findlibs
print_find_libs = None
def ProgramScanner(**kw):
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"""Return a prototype Scanner instance for scanning executable
files for static-lib dependencies"""
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kw['path_function'] = SCons.Scanner.FindPathDirs('LIBPATH')
ps = apply(SCons.Scanner.Base, [scan, "ProgramScanner"], kw)
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return ps
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def scan(node, env, libpath = ()):
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"""
This scanner scans program files for static-library
dependencies. It will search the LIBPATH environment variable
for libraries specified in the LIBS variable, returning any
files it finds as dependencies.
"""
try:
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libs = env['LIBS']
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except KeyError:
# There are no LIBS in this environment, so just return a null list:
return []
if SCons.Util.is_String(libs):
libs = string.split(libs)
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elif SCons.Util.is_List(libs):
libs = SCons.Util.flatten(libs)
else:
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libs = [libs]
try:
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prefix = env['LIBPREFIXES']
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if not SCons.Util.is_List(prefix):
prefix = [ prefix ]
except KeyError:
prefix = [ '' ]
try:
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suffix = env['LIBSUFFIXES']
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if not SCons.Util.is_List(suffix):
suffix = [ suffix ]
except KeyError:
suffix = [ '' ]
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pairs = []
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for suf in map(env.subst, suffix):
for pref in map(env.subst, prefix):
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pairs.append((pref, suf))
result = []
if callable(libpath):
libpath = libpath()
find_file = SCons.Node.FS.find_file
adjustixes = SCons.Util.adjustixes
for lib in libs:
if SCons.Util.is_String(lib):
lib = env.subst(lib)
for pref, suf in pairs:
l = adjustixes(lib, pref, suf)
l = find_file(l, libpath, verbose=print_find_libs)
if l:
result.append(l)
else:
result.append(lib)
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return result