Сustom dynamic-link libraries (DLL)reduce the collection of functions available in Intel® oneAPI Math Kernel Library (oneMKL) libraries to those required to solve your particular problems, which helps to save disk space and build your own dynamic libraries for distribution.
The Intel® oneAPI Math Kernel Library (oneMKL) customDLL builder enables you to create a dynamic library containing the selected functions and located in the tools\builder directory. The builder contains a makefile and a definition file with the list of functions.