- When link error comes:
collect2: error: ld returned 1 exit status- run compile with verbose such as
make VERBOSE=1 - Find the compiling command actually done
- Go to the folder where the compile crashed
- Try the same command from CLI
- When the same error messsage is found, begin trouble-shooting
- Mostly adding necessary libraries in the compiling command will solve the issue
- Or update LD_LIBRARY_PATH
- run compile with verbose such as
- When
error: invalid new-expression of abstract class type 'XX'- Ref: https://www.codeproject.com/Questions/1004768/Invalid-new-expression-of-abstract-class-type
- If a class inherits from a parent class, some of virtual functions are not explicitly defined in the new class