115 lines
3.5 KiB
Python
115 lines
3.5 KiB
Python
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# MIT License
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#
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# Copyright The SCons Foundation
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#
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# Permission is hereby granted, free of charge, to any person obtaining
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# a copy of this software and associated documentation files (the
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# "Software"), to deal in the Software without restriction, including
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# without limitation the rights to use, copy, modify, merge, publish,
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# distribute, sublicense, and/or sell copies of the Software, and to
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# permit persons to whom the Software is furnished to do so, subject to
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# the following conditions:
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#
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# The above copyright notice and this permission notice shall be included
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# in all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
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# KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
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# WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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"""Dependency scanner for program files."""
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import SCons.Node
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import SCons.Node.FS
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import SCons.Util
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from . import ScannerBase, FindPathDirs
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# global, set by --debug=findlibs
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print_find_libs = None
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def ProgramScanner(**kwargs):
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"""Return a prototype Scanner instance for scanning executable
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files for static-lib dependencies"""
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kwargs['path_function'] = FindPathDirs('LIBPATH')
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ps = ScannerBase(scan, "ProgramScanner", **kwargs)
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return ps
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def _subst_libs(env, libs):
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"""Substitute environment variables and split into list."""
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if SCons.Util.is_String(libs):
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libs = env.subst(libs)
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if SCons.Util.is_String(libs):
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libs = libs.split()
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elif SCons.Util.is_Sequence(libs):
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_libs = []
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for l in libs:
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_libs += _subst_libs(env, l)
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libs = _libs
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else:
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# libs is an object (Node, for example)
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libs = [libs]
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return libs
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def scan(node, env, libpath = ()):
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"""Scans program files for static-library dependencies.
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It will search the LIBPATH environment variable
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for libraries specified in the LIBS variable, returning any
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files it finds as dependencies.
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"""
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try:
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libs = env['LIBS']
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except KeyError:
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# There are no LIBS in this environment, so just return a null list:
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return []
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libs = _subst_libs(env, libs)
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try:
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prefix = env['LIBPREFIXES']
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if not SCons.Util.is_List(prefix):
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prefix = [ prefix ]
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except KeyError:
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prefix = [ '' ]
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try:
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suffix = env['LIBSUFFIXES']
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if not SCons.Util.is_List(suffix):
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suffix = [ suffix ]
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except KeyError:
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suffix = [ '' ]
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pairs = []
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for suf in map(env.subst, suffix):
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for pref in map(env.subst, prefix):
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pairs.append((pref, suf))
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result = []
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if callable(libpath):
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libpath = libpath()
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find_file = SCons.Node.FS.find_file
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adjustixes = SCons.Util.adjustixes
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for lib in libs:
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if SCons.Util.is_String(lib):
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for pref, suf in pairs:
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l = adjustixes(lib, pref, suf)
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l = find_file(l, libpath, verbose=print_find_libs)
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if l:
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result.append(l)
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else:
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result.append(lib)
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return result
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# Local Variables:
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# tab-width:4
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# indent-tabs-mode:nil
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# End:
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# vim: set expandtab tabstop=4 shiftwidth=4:
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