Have you edited ALL the source files that had #include "checkSum.c", to change it to #include "checkSum.h", and recompiled them?
Keywords in error message highlighted
ld: duplicate symbol...
Type: Posts; User: Salem
Have you edited ALL the source files that had #include "checkSum.c", to change it to #include "checkSum.h", and recompiled them?
Keywords in error message highlighted
ld: duplicate symbol...