Visualize_mach o_dependencies - heldersrvio/PureDarwin GitHub Wiki

Visualize mach-o dependencies

In the spirit of Vizualize dependencies in MacPorts and Vizualize KEXTs dependencies, this page describes a way to track mach-o file dependencies and related satellite information (e.g: blockers).

Contents 1. [**1** Prerequisites](mach-o-dependencies-overview.html#TOC-Prerequisites) 2. [**2** Using pd_machviz to generate a graph](mach-o-dependencies-overview.html#TOC-Using-pd_machviz-to-generate-a-graph) 1. [**2.1** A simple example across otool dependencies](mach-o-dependencies-overview.html#TOC-A-simple-example-across-otool-dependencies) 2. [**2.2** A circular view of xterm dependencies](mach-o-dependencies-overview.html#TOC-A-circular-view-of-xterm-dependencies) 3. [**2.3** Checking for purity in passwd](mach-o-dependencies-overview.html#TOC-Checking-for-purity-in-passwd) 3. [**3** Resources](mach-o-dependencies-overview.html#TOC-Resources)

Prerequisites

Graphviz is an opensource graph visualization software from AT&T Laboratories and Bell Laboratories (Lucent Technologies).

port install graphviz +the_variants_you_need

or grab and compile the source from graphviz.org. Note: On Mac OS X, Pixelglow is a nice a front-end, you can even see the graph being built in real-time.

Using pd_machviz to generate a graph

The pd_machviz tool is available in the svn/hg trunk.

A simple example across otool dependencies

A hierarchical view:

The corresponding script output:

./pd_machviz /usr/bin/otool
Generate dependencies graphs of /usr/bin/otool
 Legend:
 1 + foo
 2 |`- bar                                             No more dependency
 2 |`+ baz impure! /Blocker_1 -> file_involved_1       Impurity detected
 2 |`+ baz impure! /Blocker_. -> file_involved_.       Impurity detected
 2 |`+ baz impure! /Blocker_n -> file_involved_n       Impurity detected
 2 |`+ baz                                             Dependency found
 3 | |`. qux                                           Cached file (Already processed)
Now generating dependencies tree, please wait...
 1 + /usr/bin/otool
 2 |`+ /usr/lib/libgcc_s.1.dylib
 3 | |`+ /usr/lib/libSystem.B.dylib
 4 | | |`- /usr/lib/system/libmathCommon.A.dylib
 2 |`. /usr/lib/libSystem.B.dylib
Generation of otool.dot complete.
Now drawing graphs from otool.dot, please wait...
Generation of otool.dot_directed.png complete.
Generation of otool.dot_circular.png complete.
Generation of otool.dot_radial.png complete.
Generation of otool.dot_undirected.png complete.
Generation of otool.dot_undirectedBIS.png complete. #### A circular view of xterm dependencies

Checking for purity in passwd

Resources {style="margin:10px 10px 10px 0px;background-color:transparent;color:rgb(0,0,0);font-family:Arial,Verdana,sans-serif;font-size:18px"}

http://www.graphviz.org the otool page

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