Configuring Code Generation

Configuration of code generation settings such as output file name, location, type, language

To control and configure the code generation process, there are many parameters and settings. These settings control attributes such as the output build type (MEX, lib, dll, or exe) and C versus C++ language. Other configuration settings enable you to customize the generated code according to specific needs, such as readability, performance, and external code integration. You can modify the configuration settings in the code generation configuration object from the app or at the command line. You can create the configuration object by using coder.config. Open the object in the editing app using open.

Functions

coder.config Create code generation configuration objects

Code Configuration Settings

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Output

Build type	Output to build from generated C/C++ code
Language	Language to use in generated code
Language standard	Language standard to use for the generated code
Custom output file	Name of code generation output file
Generate code only	Generation of only source code
Verification mode	Code verification mode
Build folder	Folder type for files generated during build process
Build folder path	Folder path for files generated during build process
Working folder	Current working folder type for build process
Working folder path	Current working folder path for build process

Speed

Enable responsiveness to CTRL+C and graphics refreshing	Responsiveness checks
Keep extrinsic calls	Extrinsic function call support
Check memory integrity	Memory integrity checking
Saturate on integer overflow	Integer overflow support
Support only purely-integer numbers	Detection of floating-point code
Support nonfinite numbers	Support for nonfinite values
Loop unrolling threshold	Threshold on the number of iterations that determines whether to automatically unroll a `for`-loop and a `parfor`-loop
Preserve input data for entry-point functions	Whether to protect entry-point input data from modification
Qualify C restrict function arguments	Annotate function declarations with the restrict keyword
Enable OpenMP library if possible	Parallelization of `parfor`-loops
Enable automatic parallelization	Automatic parallelization of `for` loops
Maximum number of CPU threads	Maximum number of CPU threads to run parallel for-loops
Leverage target hardware instruction set extensions	SIMD instruction set for target hardware
FMA	Whether to use SIMD instructions for fused multiply add operations
Inline strategy for user written MATLAB functions	Control inlining between user-written functions
Inline strategy for MathWorks written MATLAB functions	Control inlining between MathWorks functions
Inline strategy for calls between MathWorks functions and user functions	Control inlining between user-written functions and MathWorks functions
Optimize reductions	Generate SIMD code for reduction operations \| Parallelize for-loops performing reduction operations
Hardware SIMD acceleration	Level of SIMD intrinsics

Memory

Global data synchronization mode	Global data synchronization mode
Enable variable-sizing	Variable-size array support
Enable dynamic memory allocation	Enable dynamic memory allocation for fixed- and variable-size arrays
Dynamic memory allocation threshold	Size threshold for dynamic memory allocation of variable-size arrays
Enable dynamic memory allocation for fixed-sized arrays	Dynamic memory allocation for fixed-size arrays
Dynamic memory allocation interface	Dynamically allocated array at generated function interface
Array layout	Row-major array layout
Preserve array dimensions	N-dimensional indexing
Stack usage max	Maximum stack usage per application
Generate re-entrant code	Multi-instance, reentrant code
Preserve unused fields and properties	Preserve unused class properties or structure fields in the generated C/C++ code

Code Appearance

Generated file partitioning method	File partitioning mode
Large constant generation	Whether to write large deep learning constants to binary data files
Large constant threshold	Threshold above which the code generator writes DNN constants to binary data files
Include comments	Comments in generated code
Comment style	Comment style in the generated code
MATLAB source code as comments	Inclusion of MATLAB source code as comments in generated code
MATLAB source code comment line numbers	Include line numbers of MATLAB source code as comments in the generated code
MATLAB function help text	MATLAB function help text in function banner
Requirement summaries as comments	Include requirements links as comments
Convert if-elseif-else patterns to switch-case statements	Conversion of `if-elseif-else` patterns to `switch-case` statements
Preserve extern keyword in function declarations	Preservation of the `extern` keyword in function declarations
Use signed shift left for fixed-point operations and multiplication by powers of 2	Replacement of multiplications by powers of two with signed left bitwise shifts
Allow right shifts on signed integers	Signed right bitwise shifts in generated code
Parentheses	Parenthesization level in the generated code
Maximum identifier length	Maximum number of characters in generated identifiers
Header guard style	Style of preprocessor directive in generated code
Indent style	Style for placement of braces in the generated code
Indent size	Number of characters per indentation level
Column limit	Maximum number of columns before a line break in the generated code
Data type replacement	Data type replacement in generated code
Enable custom data type replacement	Custom names for data types in generated code
Import custom types from external header files	Whether to import type definition from external header files
Header files	External header files that contain custom type definitions
Global variables	Custom identifier format for global variable identifiers
Global types	Custom identifier format for global type identifiers
Field name of global types	Custom identifier format for field names in global type identifiers
Local functions	Custom identifier format for local function identifiers
Local temporary variables	Custom identifier format for local temporary variable identifiers
Constant macros	Custom identifier format for constant macro identifiers
EMX array types	Custom identifier format for EMX array types
EMX array utility functions	Custom identifier format for EMX array utility functions
Generated source and header file name format	File name customization macro
Code generation template file	Code generation template for file and function banners
Select code format tool to use	Formatting tool for generated code
Control use of clang format configuration	Control generation of `clang-format` file

Debugging

Enable C/C++ compiler debug mode	C compiler debugging mode
Generate run-time error checks	Run-time error detection and reporting in generated code
Show verbose compiler output	Code generation progress display
Always create a report	Code generation report
Report differences from MATLAB	Potential differences reporting
Highlight potential data type issues	Highlighting of potential data type issues in the code generation report
Highlight potential row-major issues	Potential row-major layout issues
Highlight potential issues resulting from implicit expansion	Highlight potential implicit expansion issues
Highlight potential issues in use of coder.loop functions	Highlight potential loop control issues
Generate static code metrics report	Static code metrics report
Generate code replacements report	Code replacement report
Automatically launch a report if one is generated	Automatic open of code generation report
Export report information to variable	Name of variable containing code generation report information
Enable source-level debugging for SIL or PIL	Debugging of generated code during a SIL or PIL execution
Check constant inputs	Constant input checking mode for a SIL or PIL execution
Synchronize global data	Global data synchronization mode for a SIL or PIL execution
Enable entry point execution profiling	Execution time profiling during a SIL or PIL execution
Enable function execution profiling	Execution time profiling of functions called within entry-point functions during a SIL or PIL execution
Specify profiling save options	Collection and storage of execution-time measurements
Enable entry point stack profiling	Stack usage profiling during a SIL or PIL execution
Enable C/C++ code coverage	Analysis of C/C++ code coverage
Enable execution profiling	Instrumentation for profiling

Custom Code

Code replacement library	Code replacement library for generated code
Use built-in FFTW library	Generate code that uses the FFTW library shipped with MATLAB
Custom FFT library callback	Callback class for FFTW library calls
Custom BLAS library callback	BLAS callback class
Custom LAPACK library callback	LAPACK callback class
Use precompiled libraries	Whether to use precompiled libraries in generated code
Source file	Code to appear near the top of generated `.c` or `.cpp` files
Header file	Custom code that appears at top of generated C/C++ header files
Initialize function	Custom code to include in the generated initialize function
Terminate function	Code that appears in the generated terminate function
Additional include directories	Include folders to add to include path for compiling generated code
Additional source files	Source files to compile and link with the generated code
Additional libraries	Static library files to link with the generated code
Post-code-generation command	Command to customize build processing
Reserved names	Names that code generator must not use for functions or variables

Hardware

Hardware board	Name of hardware board
Production Device Details: Device vendor	Manufacturer of production hardware
Production Device Details: Device type	Type of production hardware
Production Device Details: char	Length in bits of the C `char` data type
Production Device Details: short	Length in bits of the C `short` data type
Production Device Details: int	Length in bits of the C `int` data type
Production Device Details: long	Length in bits of the C `long` data type
Production Device Details: long long	Length in bits of the C `long long` data type
Production Device Details: float	Length in bits of the C floating-point data type
Production Device Details: double	Length in bits of the C `double` data type
Production Device Details: machine word	Microprocessor native word size
Production Device Details: pointer	Length in bits of pointer data
Production Device Details: size_t	Length in bits of `size_t` data
Production Device Details: ptrdiff_t	Length in bits of `ptrdiff_t` data
Production Device Details: Byte ordering	Significance of the first byte of a data word
Production Device Details: Shift right on a signed integer as an arithmetic shift	Implementation of signed integer right shift as arithmetic right shift
Production Device Details: Enable long long	Long long data type support
Production Device Details: Largest atomic integer size	Largest atomic integer size for production hardware
Production Device Details: Largest atomic floating-point size	Largest atomic floating-point size for production hardware
Production Device Details: Signed integer division rounds to	Rounding for division of two signed integers
Target Device Details: Device vendor	Manufacturer of test hardware
Target Device Details: Device type	Type of test hardware
Test Device Details: char	Length in bits of the C `char` data type
Test Device Details: short	Length in bits of the C `short` data type
Test Device Details: int	Length in bits of the C `int` data type
Test Device Details: long	Length in bits of the C `long` data type
Test Device Details: long long	Length in bits of the C `long long` data type
Test Device Details: float	Length in bits of the C floating-point data type
Test Device Details: double	Length in bits of the C `double` data type
Test Device Details: machine word	Microprocessor native word size
Test Device Details: pointer	Length in bits of pointer data
Test Device Details: size_t	Length in bits of `size_t` data
Test Device Details: ptrdiff_t	Length in bits of `ptrdiff_t` data
Test Device Details: Byte ordering	Significance of the first byte of a data word
Test Device Details: Shift right on a signed integer as an arithmetic shift	Implementation of signed integer right shift as arithmetic right shift
Test Device Details: Enable long long	Long long data type support
Test Device Details: Largest atomic integer size	Largest atomic integer size for test hardware
Test Device Details: Largest atomic floating-point size	Largest atomic floating-point size for test hardware
Test Device Details: Signed integer division rounds to	Rounding for division of two signed integers
Toolchain	Toolchain to use for building a C/C++ library or executable program
Custom Toolchain Options	Custom settings for tools in selected toolchain
Build configuration	Compiler optimization or debug settings for toolchain
Test Hardware is the same as production hardware	Equivalence of production and target hardware characteristics

C++ Language Features

C++ namespace	Namespace name for generated C++ code
Interface style	Interface style for generated C++ code
C++ interface class name	Interface class name for generated C++ code
Generate C++ namespaces from MATLAB namespaces	Generate C++ namespaces for MATLAB namespaces
Namespace for MathWorks code	Place C++ code generated for MathWorks code in a separate namespace
Generate C++ classes from MATLAB classes	Generate C++ classes for MATLAB classes
Generate C++ enum class from MATLAB enumeration	Whether to generate C++ enumeration classes for MATLAB enumerations

Advanced

Casting mode	Data type casting level
Constant folding timeout	Maximum number of instructions to be executed by the constant folder
Compile-time recursion limit	Maximum number of function specializations for compile-time recursion
Automatically run the initialize function	Automatically run the initialize function
Initialize function required	Initialize function generation
Terminate function required	Terminate function generation
Generate justification comments for known MISRA violations	Add annotations to suppress known MISRA/AUTOSAR violations
Generate example main	Example C/C++ main file generation
Preserve variable names	Variable names to preserve in the generated code
Echo expressions without terminating semicolons	Expression echoing
Generate makefile	Makefile generation
Automatically introduce extrinsic calls	Automatic extrinsic function calls
Simplify array indexing	Strength reduction optimization
Use memcpy for vector assignment	Whether to enable `memcpy` optimization
Memcpy threshold (bytes)	Minimum size for `memcpy` or `memset` optimization
Use memset to initialize floats and doubles to 0.0	Assignment of float and double zero with memset
Constant inputs	Constant input checking mode
Use JIT compilation for build type of MEX	Just-in-time (JIT) compilation mode
Generate nonfinite support files if used	Generate support files for nonfinite data only if nonfinite data is used
Pass structures by reference to entry-point functions	Pass structures by reference
Always generate a default case for switch	Default case for all switch statements
Enable code traceability	Traceability in code generation report
Use Embedded Coder features	Whether to use Embedded Coder features
Enable implicit expansion	Implicit expansion capabilities in generated code
Enable automatic parallelization reporting	Reporting for automatic parallelization of `for` loops
Enable run-time recursion	Run-time recursion support
Cache dynamic array data	Dynamic array optimization
SIL/PIL Verbosity	Display communication I/O information during SIL or PIL execution
SIL/PIL profiling metrics	PMU metric

Objects

`coder.MexCodeConfig`	Configuration parameters for MEX function generation from MATLAB code
`coder.CodeConfig`	Configuration parameters for C/C++ code generation from MATLAB code
`coder.EmbeddedCodeConfig`	Configuration parameters for C/C++ code generation from MATLAB code with Embedded Coder
`coder.HardwareImplementation`	Hardware-specific configuration parameters for C/C++ code generation from MATLAB code
`coder.hardware`	Create hardware board configuration object for C/C++ code generation from MATLAB code
`coder.ReplacementTypes`	Configuration parameter to specify custom names for MATLAB built-in data types in C/C++ code generation

Topics

Build Configuration Basics

Configure Code Generation and Build Settings
Configure code generation and build configuration parameters at the command line or in the MATLAB^® Coder™ app.
Paths and File Infrastructure Setup
Specify location of custom code.
Build Process Support for File and Folder Names
Troubleshoot build process errors that occur when file system issues prevent file processing.
Share Build Configuration Settings
Export project settings to a code generation configuration object or import the settings into a project.
Specify Code Configuration Parameters Interactively
Configure the code generation process by using the Code Generation Settings dialog box.

Specific Build Options

Understand and Control Partitioning of the Generated Code
Understand how file partitioning method and inlining settings interact to control the partitioning of the generated code.
Change Language Standard Used for Code Generation
The code generator uses the language standard that you specify in the build settings.