function::MKDEF - Linux
Overview
function::MKDEF is a command used to create a ".def" file for a dynamic linked library (DLL). It generates a definition file containing the library’s exported functions and data. A ".def" file is essential for enabling access to a DLL’s symbols when linking executables.
Syntax
function::MKDEF [-o <output-file>] [-n <dll-name>] [-e <entry-point>] [-y <MS-style>] [-D <define>] <input-file>
Options/Flags
- -o
: Specifies the output ".def" file. - -n
: Sets the name of the DLL to be exported. - -e
: Defines the entry point of the DLL. - -y
: Creates an MS-style ".def" file (for compatibility with Microsoft tools). - -D
: Adds a preprocessor define to the generated file.
Examples
Creating a basic ".def" file:
function::MKDEF -n my_dll.dll symbols.h
Creating an MS-style ".def" file:
function::MKDEF -y -n my_dll.dll symbols.h
Adding a preprocessor define:
function::MKDEF -n my_dll.dll -D DEBUG symbols.h
Common Issues
- Missing or invalid input file: Ensure the specified input file exists and contains valid function and data definitions.
- Symbol conflicts: Check for duplicate symbols in the input file or with existing symbols in other linked libraries.
- Incorrect entry point: Verify that the specified entry point is valid and corresponds to the actual DLL entry point function.
Integration
function::MKDEF can be integrated with the following commands:
- dlltool: Creates or modifies DLLs based on ".def" files.
- ar: Archives ".def" files into static libraries.
- gcc, clang: Compilers that use ".def" files when linking against DLLs.
Related Commands
- DEF: Creates ".def" files for Windows systems.
- readelf: Displays information about ELF executables and libraries (including ".def" files).