I have a subdirs Qt project composed of :
- an external (not made by me) lib
- an internal (made by me) lib using the external lib
- an application using the internal lib
I am on Windows using mingw as compiler
When compiling the libraries I have no issues, everything seems to work fine.
But when I compile the application, I get an ld error : undefined reference to external lib functions (called from internal libs function).
I think this is because when compiling the internal library these method are not called therefore not loaded and this is why it can’t find them.
Is there a way to combine the 2 libraries (or at least to force the compiler/linker to resolve the symbols) when compiling the internal library ?
Source: Windows Questions