Re: Problem adding new source files

[Uri Lublin <uril@qumranet.com>]

Hacking, Stuart wrote:
> Hello,
Hi,
>  
> We have been doing some experimentation with modifications to the
> migration code in the Qemu and came up against a problem.  We included
> some code in a different file and are receiving the following error from
> make:
>  
> ---
> Migration.o: In function `migrate_prepare_page':
> /root/tmp/KVM/qemu/migration.c:367: undefined reference to
> `get_cached_page'
> /root/tmp/KVM/qemu/migration.c:367: undefined reference to
> `get_cached_page'
> /root/tmp/KVM/qemu/migration.c:367: undefined reference to
> `get_cached_page'
> collect2: ld returned 1 exit status
> Make[2]: *** [qemu-system_x86_64] Error 1
> Make[1]: *** [subdir-x86_64-softmmu] Error2
> Make: *** [qemu] Error 2
> ---

Did you define new functions in a different .c file(s) ? Did you provide 
prototypes for all new functions ? Did you add all new files to the Makefile ?

> 
> We see from looking at the code that everything seems to be correct and
> we suspect that the error is coming from the order that the files are
> being compiled.  Is there any special consideration we need to take when
> adding new headers and code files to the tree?  (at the minute any new
> files we added are in the same directory as migration.c.)
>  
> We aren't sure if the kvm maintainers are using a custom makefile,
> however, would it be more appropriate to post this on the Qemu mailing
> list?
Speculations...
I'm sure kvm maintainer and developers (and users) use the released Makefile.

Regards,
Uri.