Hello, I was reading this page about how to make a single library from many subdirectories using object files: https://cmake.org/Wiki/CMake/Tutorials/Object_Library
It is exactly what I want to do but my problem is that I do not have any source files in my "top directory" they are all in the subdirectories. I have something like this: top-dir --CMakeLists.txt ------sub-dir-a --------------CMakeLists.txt --------------file1.cpp ------sub-dir-b --------------CMakeLists.txt --------------file2.cpp However, I get the follow error message when I run cmake: You have called ADD_LIBRARY for library eema without any source files. This typically indicates a problem with your CMakeLists.txt file. Is there a way to do this without haveing any source files in the top directory? Thanks, Reuben
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