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#
# Copyright (c) 2001 - 2017 The SCons Foundation
#
# 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.
#
__revision__ = "src/engine/SCons/Scanner/Prog.py 74b2c53bc42290e911b334a6b44f187da698a668 2017/11/14 13:16:53 bdbaddog"
import SCons.Node
import SCons.Node.FS
import SCons.Scanner
import SCons.Util
# global, set by --debug=findlibs
print_find_libs = None
def ProgramScanner(**kw):
"""Return a prototype Scanner instance for scanning executable
files for static-lib dependencies"""
kw['path_function'] = SCons.Scanner.FindPathDirs('LIBPATH')
ps = SCons.Scanner.Base(scan, "ProgramScanner", **kw)
return ps
def _subst_libs(env, libs):
"""
Substitute environment variables and split into list.
"""
if SCons.Util.is_String(libs):
libs = env.subst(libs)
if SCons.Util.is_String(libs):
libs = libs.split()
elif SCons.Util.is_Sequence(libs):
_libs = []
for l in libs:
_libs += _subst_libs(env, l)
libs = _libs
else:
# libs is an object (Node, for example)
libs = [libs]
return libs
def scan(node, env, libpath = ()):
"""
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:
libs = env['LIBS']
except KeyError:
# There are no LIBS in this environment, so just return a null list:
return []
libs = _subst_libs(env, libs)
try:
prefix = env['LIBPREFIXES']
if not SCons.Util.is_List(prefix):
prefix = [ prefix ]
except KeyError:
prefix = [ '' ]
try:
suffix = env['LIBSUFFIXES']
if not SCons.Util.is_List(suffix):
suffix = [ suffix ]
except KeyError:
suffix = [ '' ]
pairs = []
for suf in map(env.subst, suffix):
for pref in map(env.subst, prefix):
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):
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)
return result
# Local Variables:
# tab-width:4
# indent-tabs-mode:nil
# End:
# vim: set expandtab tabstop=4 shiftwidth=4:
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