>> Try adding #include <stdlib.h> directly above the
>> previous added #include
>> statement.
>
> Same exact failure.

Upon close inspection it is actaully a different failure.  I also notice
that you are building with multiple processes (i.e. with a -j flag that is
greater than one), which can cause weird failures like the ones you are
noticing.

> Seems there is something wrong with main.cpp.
>

There shouldn't be.  I just ran a rebuild under Debian with one build
process with no problems.

Tim