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[[Property:title|Generating libraries]]
[[Property:weight|1]]
[[Property:uuid|a2862dd7-1702-50b6-2505-74f9e1ac4b70]]
There are two main types of libraries in Eiffel: precompiled Eiffel libraries and C libraries. Both kinds of libraries can be created via EiffelStudio. The former can only be used in Eiffel projects, C libraries can be used either in Eiffel programs, or in standard C programs.
To generate an Eiffel precompiled library:
* Select the '''Precompilation Wizard''' in the '''Tools''' menu and follow the instructions,
or
* Launch a new EiffelStudio session,
* Select your project
* Change the action to '''Precompile''',
* Click '''Open'''
To generate a dynamically linked C library using Eiffel code:
* Generate a definition file for this library, via the [[Dynamic library builder|Dynamic library Builder]] ,
* Open the [[Advanced Options|Project Settings]] dialog,
* In the '''Advanced''' section, set the '''Shared Library Definition''',
* Enter the name of the definition you created in the first step(including the path if necessary),
* Compile the current project.
The generated C library should be located in the EIFGENs|target_name|W_code directory in the directory of your project.
To generate a C library from a C compiler, please refer to the documentation of your C compiler.
{{seealso|<br/>
[[Using libraries|Using libraries]] <br/>
[[CECIL|CECIL library: calling Eiffel routines from C programs]] <br/>
[[Command line|Command line options]] }}