How can I find the calling routine for a symbol in case of a linker error "undefined reference"?

Question

Hello,
I have a problem linking an application for an embedded target. I'm developing on a windows box using Min-GW for an ARM9 target that runs under Linux.
Actually I'm switching from static linking to dynamic linking with .so-libraries to save memory space.
I get the error message

libT3Printer.so: undefined reference to `__ASSERT'

I checked all the sources for the lib and I have no idea where this function could be called. Is there any possibility to find out, who (which source file or function) could be the caller of the missing function?

Answer 1

The reference is probably being hidden by a macro. If you run the compiler with the -E option to generate predecessor output you might have a better chance of tracking it down.

Answer 2

Try to add definition NDEBUG.

In C, compiling with NDEBUG defined:

gcc -DNDEBUG foo.c

disables all calls to assert(), and this behavior is identical in C++:

g++ -DNDEBUG foo.cpp