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:mod:`macholib.dyld` --- Dyld emulation
=======================================
.. module:: macholib.dyld
:synopsis: Emulation of functonality of the dynamic linker
This module defines a number of functions that can be used
to emulate the functionality of the dynamic linker (``dyld``)
w.r.t. looking for library files and framworks.
.. function:: dyld_image_suffix([env])
Looks up the suffix to append to shared library and
framework names and returns this value when found.
Returns ``None`` when no suffix should be appended.
The *env* argument is a dictionary, which defaults
to :data:`os.environ`.
See the description of ``DYLD_IMAGE_SUFFIX`` in the
manual page for dyld(1) for more information.
.. function:: dydl_framework_path([env])
Returns a user-specified framework search path,
or an empty list when only the default search path
should be used.
The *env* argument is a dictionary, which defaults
to :data:`os.environ`.
See the description of ``DYLD_FRAMEWORK_PATH`` in the
manual page for dyld(1) for more information.
.. function:: dyld_library_path([env])
Returns a user-specified library search path,
or an empty list when only the default search path
should be used.
The *env* argument is a dictionary, which defaults
to :data:`os.environ`.
See the description of ``DYLD_LIBRARY_PATH`` in the
manual page for dyld(1) for more information.
.. function:: dyld_fallback_framework_path([env])
Return a user specified list of of directories where
to look for frameworks that aren't in their install path,
or an empty list when the default fallback path should
be used.
The *env* argument is a dictionary, which defaults
to :data:`os.environ`.
See the description of ``DYLD_FALLBACK_FRAMEWORK_PATH`` in the
manual page for dyld(1) for more information.
.. function:: dyld_fallback_library_path([env])
Return a user specified list of of directories where
to look for libraries that aren't in their install path,
or an empty list when the default fallback path should
be used.
The *env* argument is a dictionary, which defaults
to :data:`os.environ`.
See the description of ``DYLD_FALLBACK_LIBRARY_PATH`` in the
manual page for dyld(1) for more information.
.. function:: dyld_image_suffix_search(iterator[, env])
Yields all items in *iterator*, and prepents names
with the image suffix to those items when the suffix
is specified.
The *env* argument is a dictionary, which defaults
to :data:`os.environ`.
.. function:: dyld_override_search(name[, env])
If *name* is a framework name yield filesystem
paths relative to the entries in the framework
search path.
Always yield the filesystem paths relative to the
entries in the library search path.
The *env* argument is a dictionary, which defaults
to :data:`os.environ`.
.. function:: dyld_executable_path_search(name, executable_path)
If *name* is a path starting with ``@executable_path/`` yield
the path relative to the specified *executable_path*.
If *executable_path* is None nothing is yielded.
.. function:: dyld_loader_search(name, loader_path)
If *name* is a path starting with ``@loader_path/`` yield
the path relative to the specified *loader_path*.
If *loader_path* is None nothing is yielded.
.. versionadded: 1.6
.. function:: dyld_default_search(name[, env])
Yield the filesystem locations to look for a dynamic
library or framework using the default locations
used by the system dynamic linker.
This function will look in ``~/Library/Frameworks``
for frameworks, even though the system dynamic linker
doesn't.
The *env* argument is a dictionary, which defaults
to :data:`os.environ`.
.. function:: dyld_find(name[, executable_path[, env [, loader]]])
Returns the path of the requested dynamic library,
raises :exc:`ValueError` when the library cannot be found.
This function searches for the library in the same
locations and de system dynamic linker.
The *executable_path* should be the filesystem path
of the executable to which the library is linked (either
directly or indirectly).
The *env* argument is a dictionary, which defaults
to :data:`os.environ`.
The *loader_path* argument is an optional filesystem path for
the object file (binary of shared library) that references
*name*.
.. versionchanged:: 1.6
Added the *loader_path* argument.
.. function:: framework_find(fn[, executable_path[, env]])
Find a framework using the same semantics as the
system dynamic linker, but will accept looser names
than the system linker.
This function will return a correct result for input
values like:
* Python
* Python.framework
* Python.framework/Versions/Current
|
