[Vala] Mixing C with vala

[Daniel Brendle <grindhold skarphed org>]

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Hi guys.

I want to use Vala together with C, in order to do some lowlevel
manual memory management stuff in a certain subsystem of my program.
At first i tried writing g-object boilerplate-code myself, but it was
a bit cumbersome, so i decided to write a class in vala and let the
vala compiler generate the boilerplate-code for me. (I obtained the c
file via -C and the headerfile via -h)

currently i have 4 files involved:

main.vala
nsp-page.c
nsp-page.h
nsp.vapi

main.vala has a simple main-method and creates a Nsp.Page. nsp-page.c
and nsp-page.h contain the gobject-code for the Nsp.Page class.
nsp.vapi describes the Nsp.Page-class towards the vala compiler.

I try to compile everything with

$ valac -X -I. --vapidir . --pkg nsp main.vala nsp-page.c

Now the following problem arises:


main.vala.c:(.text+0x8b): undefined reference to `nsp_page_unref'

Of course, the C-code generated from main.vala tries to unreference
the generated Page-object. This method does not exist anywhere. When i
write Nsp.Page as regular vala-class, main.c tries to derefence the
Page-object via g_object_unref() instead of some class-specific method
that doesn't exist.

What am I doing wrong here?

Yours, Grindhold
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