Why does my code generated from MATLAB Coder fail to compile because of missing function definitions for "omp_init_nest_lock" and "omp_destroy_nest_lock"?

26 次查看（过去 30 天）
MathWorks Support Team
回答： cui,xingxing 2024-2-15
Why does my code generated from MATLAB Coder fail to compile because of missing function definitions for "omp_init_nest_lock" and "omp_destroy_nest_lock"?
I am trying to compile the code on a Linux operating system and it fails because the compiler cannot find definitions for the mentioned functions. I do not know why these functions are appear in my code. I also noticed that the same code compiles on a different computer with a Windows operating system using Microsoft Visual Studio. 

请先登录，再回答此问题。

采纳的回答

MathWorks Support Team
编辑：MathWorks Support Team 2021-8-26
This issue is typically encountered if the Linux computer on which the code is being compiled has an outdated compiler. The functions "omp_init_nest_lock" and "omp_destroy_nest_lock" are implementations of "OpenMP" specifications and they should be provided by the compiler. On a Linux computer, installing the recommended version of the GCC compiler should resolve this issue. 
Information about supported compilers for the current MATLAB release can be found at the following link:
https://www.mathworks.com/support/requirements/supported-compilers.html
Information about supported compilers for the previous MATLAB releases can be found at the following link:
https://www.mathworks.com/support/requirements/previous-releases.html
Note: this also addresses a similar issue on Ubuntu.

更多回答（1 个）

cui,xingxing
cui,xingxing 2024-2-15
If you use the CMake tool to compile, then it should link to the OpenMP library. Add the following example to CMakeLists.txt.
FIND_PACKAGE( OpenMP REQUIRED)
if(OPENMP_FOUND)
message("OPENMP FOUND")
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${OpenMP_C_FLAGS}")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${OpenMP_CXX_FLAGS}")
set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} ${OpenMP_EXE_LINKER_FLAGS}")
endif()

类别

在 Help Center 和 File Exchange 中查找有关 MATLAB Coder 的更多信息

标签

产品


版本

R2016a

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by