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    <p>Have a look at my answer to this question: <a href="https://stackoverflow.com/questions/12834141/setting-path-of-the-native-library-for-dllimport-on-mono-for-mac/12840932#12840932">Setting path of the Native Library for DllImport on Mono for Mac</a></p> <p>The binary launcher comes from <a href="https://github.com/mono/monodevelop/blob/master/main/build/MacOSX/monostub.m" rel="nofollow noreferrer">monodevelop/main/build/MacOSX/monostub.m</a>.</p> <p>You can use either <code>MyApp.app/Contents/Frameworks</code> or some other path, the important part is not to use any path names in your <code>[DllImport]</code> but instead add the <code>&lt;dllmap&gt;</code> using <code>@executable_path</code> to your <code>app.config</code> like I explained in that other answer.</p> <p>There's a also a link to a test app on github in there.</p> <p><strong>Detailed Instructions</strong></p> <ol> <li><p>Pick a path inside the <code>MyApp.app</code> to install your native dll, for instance <code>Contents/SharedSupport/sqlite3.0.8.6.dylib</code>.</p></li> <li><p>Compute the relative path from the directory where the managed assembly is located to the native <code>.dll</code> and prepend <code>@executable_path</code> to it.</p> <p>For instance, if your managed assembly is in <code>Contents/MonoBundle/MyApp.exe</code> and the native dll in <code>Contents/SharedSupport/sqlite3.0.8.6.dylib</code>, then it's <code>@executable_path/../SharedSupport/sqlite3.0.8.6.dylib</code>.</p></li> <li><p>Change the installed name of the library to this relative path using <code>install_name_tool</code>.</p></li> <li><p>Add a new <code>MyApp.exe.config</code> file to your project, containing</p> <pre><code>&lt;configuration&gt; &lt;dllmap dll="sqlite" target="@executable_path/../SharedSupport/sqlite3.0.8.6.dylib" /&gt; &lt;/configuration&gt; </code></pre> <p>Use the path that you computed in step 2. for the <code>target</code> field. Right-click the file in MonoDevelop, select "Quick Properties" from the context menu and enable "Copy to Output directory". This will copy the file into the <code>Contents/MonoBundle</code> directory, so it sits right next to your <code>MyApp.exe</code>.</p></li> <li><p>Use <code>[DllImport ("sqlite")]</code> to reference this in your code.</p></li> </ol> <p><strong>When another library references it</strong></p> <p>When another library, for instance <code>Mono.Data.Sqlite.dll</code> references it, it get a little bit more complicated.</p> <p>Use the same steps as above, but you need to figure out which name that other library is using in its <code>[DllImport]</code> to reference the native library and put that into the <code>&lt;dllimport dll="..." /&gt;</code>. You can either look for the <code>[DllImport]</code> statements in the source code or run <code>monodis</code> on the assembly and search for <code>pinvokeimpl</code>, for instance:</p> <pre><code>// method line 679 .method assembly static hidebysig pinvokeimpl ("sqlite3" as "sqlite3_create_function" cdecl ) default int32 sqlite3_create_function (native int db, unsigned int8[] strName, int32 nArgs, int32 nType, native int pvUser, class Mono.Data.Sqlite.SQLiteCallback func, class Mono.Data.Sqlite.SQLiteCallback fstep, class Mono.Data.Sqlite.SQLiteFinalCallback ffinal) cil managed preservesig { // Method begins at RVA 0x0 } // end of method UnsafeNativeMethods::sqlite3_create_function </code></pre> <p>So <code>Mono.Data.Sqlite.dll</code> is using "sqlite3" to reference the native dll, so your <code>MyApp.exe.config</code> file will look like this:</p> <pre><code> &lt;configuration&gt; &lt;dllmap dll="sqlite3" target="@executable_path/../SharedSupport/sqlite3.0.8.6.dylib" /&gt; &lt;/configuration&gt; </code></pre>
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    1. POIncluding custom dll and dylib in MonoMac app
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    1. USMartin Baulig
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    1. COMartin, thanks. However, that answer does not provide exact steps. It would save a lot of time if you could really list the precise steps to add a dylib to an .app and to have the combination work. What are the precise paths relative to the app bundle? Exactly where should the config file go, how to use otool and install_name_tool to modify the dylib and so on. As mentioned in the question, we've spent a couple of months trying to get a working sequence of steps, so there must be something basic we're missing. Even better might be a shell script to automate the process.
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    2. COI have started a bounty for this as added incentive.
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    3. COMmmh, a bounty ;-). Well, I'm too tired anyways to do this today and if you could wait a couple of days, then I could probably also think about something "real". Instead of writing some shell script for this, it may make more sense to just add this functionality to MonoDevelop. Something like "Add native reference" where you simply select some .dylib and MonoDevelop will automatically add it to the .app.
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