Specify Path For Libraries In Mac

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The Library Manager is the simplest and safest way to install libraries. If possible, that is the method you should use.

If the library you want to use is not available via the library manager, you can get the source code and place it into your machine's local library folder. The location of the folder is rather specific.

See the file hierarchy below:

It is important to install your libraries in the correct location. Otherwise the compiler will not be able to locate them when you try to compile and upload your sketches.

Incorrectly installed libraries can cause many problems with the IDE.

Locate your Sketchbook Folder and the Libraries Folder Inside

Your sketchbook folder is the folder where the Arduino IDE stores your sketches. This folder is automatically created by the IDE when you install it.
On Linux machines, the folder is named 'Sketchbook' and it is typically located in /home/
On Windows and Macintosh machines, the default name of the folder is 'Arduino' and is located in your Documents folder.

This is a common source of confusion on Windows and Mac machines, your sketchbook folder is not named 'sketchbook' it is named 'Arduino'!

User installed libraries should go in a folder named Libraries, located inside your sketchbook folder. This is where the IDE will look for user installed libraries.

On version 1.0.2 and later of the Arduino IDE, the 'Libraries' folder is created automatically. On earlier versions of the IDE, you may need to create it when you install your first library.

Specify Path For Libraries In Mac Pro

Open the Preferences Dialog

Click File -> Preferences in the IDE.

Find the Sketchbook Location

Usually a folder named Arduino in your Documents folder.
Once you know the location, navigate to this folder in Windows Explorer or mac Finder

Create a Libraries Folder

If there is no Libraries folder there, create one.
Right click in Windows Explorer and select New -> Folder.

Rename to Libraries

Right click on the New Folder and select Rename. Then type in Libraries.

This guide was first published on Feb 16, 2013. It was lastupdated on Feb 16, 2013.This page (Installing Libraries Manually) was last updated on Apr 10, 2020.

Application users often need to organize their applications within their file systems in a way that makes them more efficient to use. This capability is easy to provide for a single binary because the location of its dependent libraries is easy to determine: They may reside at a standard location in the file system or at a location relative to the binary itself. However, when dealing with a set of applications that share dependent libraries (for example, in an application suite), providing users the ability to relocate the suite directory is more difficult: Either the suite’s dependent libraries must be located outside the suite directory, or each of the suite’s executables must be linked taking into account its position within the suite. In OS X v10.5 and later the linker and dynamic loader offer a simple way of allowing multiple executables in an application suite directory to share dependent libraries while providing the suite’s users the option of relocating the suite directory. Using run-path dependent libraries you can create a directory structure containing executables and dependent libraries that users can relocate without breaking it.

A run-path dependent library is a dependent library whose complete install name is not known when the library is created (see How Dynamic Libraries Are Used). Instead, the library specifies that the dynamic loader must resolve the library’s install name when it loads the executable that depends on the library.

To use run-path dependent libraries, an executable provides a list of run-path search paths, which the dynamic loader traverses at load time to find the libraries.

This article describes how to create run-path dependent libraries and how to use them in executables.

Creating Run-Path Dependent Libraries

To create a run-path dependent library, you specify a run-path–relative pathname as the library’s install name. A run-path-relative pathname uses the @rpath macro to specify a path relative to a directory to be determined at runtime. A run-path–relative pathname uses the following format:

These are examples of run-path–relative pathnames:

@rpath/libMyLib.dylib
@rpath/MyFramework.framework/Versions/A/MyFramework

A run-path install name is an install name that uses a run-path–relative pathname. You specify a run-path install name while creating the dependent library using the gcc -install_name option. See the gcc man page for more information.

Using Run-Path Dependent Libraries

To use run-path dependent libraries (those using run-path install names) on an executable, you specify one or more run-path search paths with the ld -rpath option (each -rpath clause specifies one run-path location). When the dynamic loader (dyld) loads the executable, it looks for run-path dependent libraries in the run-path search paths in the order in which they were specified at link time.

Specify Path For Libraries In Mac 2017

This is an example of a list of run-path search paths:

Note: Run-path dependent libraries can also be used as regular dependent libraries by specifying absolute pathnames instead of run-path–relative pathnames in -rpath clauses and ensuring that the libraries reside at the specified locations.

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