Table Of Contents
Shared Library Best Practices
Last Modified: February 19, 2020
Prepare your shared library to minimize errors when using a Shared Library Interface (SLI).
When implementing an SLI, ensure the following:
- Your entry point is exported from the shared library. For example, in a C++ library, declare the functions you want to use with the _declspec (dllexport) keyword in the header file and the source code, or define them in the EXPORTS section of the module definition file.
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The C++ compiler has not decorated the function name. Name decoration doesn't cause any technical problems, but can make your code less clear to read. Use the C++ compiler function export directive, extern "C"{}, in your header file, as shown in the following example code:
extern "C" { /* your function prototypes here */ } - All applications that use the shared library are unloaded from memory before recompiling the shared library. This ensures the shared library itself is not loaded into memory when recompiling. For example, if you are using a shared library in your VI, you must close the entire project before recompiling your shared library.
