Hi Ziarah,
I understand that you are trying to build a C/C++ application in Visual Studio 2017 and are trying to use a function in the DLL file generated by “deploytool”.
The given error occurs when the required LIB files are not included in the project when building. When “deploytool” is used to generate a DLL, additionally a Header (.h) file and a LIB (.lib) file are also generated. The LIB file needs to be included as an additional dependency in the Linker options of the project.
For example, let’s say the library name is “MyLibrary”. The following three files are generated by “deploytool”:
- MyLibrary.h
- MyLibrary.dll
- MyLibrary.lib
Following are the steps to use “MyLibrary” in a C/C++ project:
1. Add additional include directories:
Project -> Properties -> C/C++ -> General -> Additional Include Directories
Add the following two lines:
C:\Program Files\MATLAB\R2024a\extern\include
path_to_folder_which_contains_MyLibrary.h
2. Add additional dependencies:
Project -> Properties -> Linker -> Input -> Additional Dependencies
Add the following two lines:
C:\Program Files\MATLAB\R2024a\extern\lib\win64\mingw64\mclmcrrt.lib
path_to_MyLibrary.lib
3. Copy MyLibrary.dll to the Target directory of the project
You can either do this manually after building the project or through a Post-Build Event. Steps to use a Post-Build Event:
Project -> Properties -> Build Events -> Post Build Event -> Command Line
Add the following line:
XCOPY "path_to_MyLibrary.dll" "$(TargetDir)" /D /K /Y
Please take a look at the following MATLAB documentation link which has an example of how to use MATLAB generated libraries in Visual Studio:
I hope this helps!
Aditya
