[asterisk-dev] dahdi-linux include/ and out-of-tree modules

[Tzafrir Cohen]

On Mon, Mar 16, 2009 at 12:26:43AM +0200, Tzafrir Cohen wrote:
> Hi
> 
> dahdi-linux has several files under dahdi/include/ . user.h is the
> interface exposed to userspace. The rest seem to be the rest of the
> interface dahdi presents to modules.
> 
> So let's try building a module outside the tree:
> 
> The commands:
> 
>   wget http://svn.digium.com/svn/dahdi/linux/trunk/drivers/dahdi/wct1xxp.c
>   echo obj-m = wct1xxp.o >Kbuild
>   DAHDI_SRC="$HOME/Proj/Asterisk/Svn/dahdi-linux"
>   echo "EXTRA_CFLAGS += -I$DAHDI_SRC/include" >>Kbuild
>   make -C /lib/modules/`uname -r`/build M=$PWD modules
> 
> The output:
> 
> tzafrir at sweetmorn:/tmp/test$ wget http://svn.digium.com/svn/dahdi/linux/trunk/drivers/dahdi/wct1xxp.c
> --2009-03-16 00:12:27--  http://svn.digium.com/svn/dahdi/linux/trunk/drivers/dahdi/wct1xxp.c
> Resolving svn.digium.com... 76.164.171.226
> Connecting to svn.digium.com|76.164.171.226|:80... connected.
>  OK 200 תיינפ HTTP הבושת תלבקל ןיתממ ,החלשנ...
> Length: 36331 (35K) [text/plain]
> Saving to: `wct1xxp.c'
> 
> 100%[======================================>] 36,331      37.7K/s   in 0.9s
> 
> 2009-03-16 00:12:29 (37.7 KB/s) - `wct1xxp.c' saved [36331/36331]
> 
> tzafrir at sweetmorn:/tmp/test$ echo obj-m = wct1xxp.o >Kbuild
> tzafrir at sweetmorn:/tmp/test$ echo "EXTRA_CFLAGS += -I$HOME/Proj/Asterisk/Svn/dahdi-linux/include" >>Kbuild
> tzafrir at sweetmorn:/tmp/test$ make -C /lib/modules/`uname -r`/build M=$PWD modules
> make: Entering directory `/usr/src/linux-headers-2.6.26-1-amd64'
>   CC [M]  /tmp/test/wct1xxp.o
> In file included from /tmp/test/wct1xxp.c:37:
> /home/tzafrir/Proj/Asterisk/Svn/dahdi-linux/include/dahdi/kernel.h:39:26: error: dahdi_config.h: No such file or directory
> /home/tzafrir/Proj/Asterisk/Svn/dahdi-linux/include/dahdi/kernel.h:99:19: error: ecdis.h: No such file or directory
> In file included from /tmp/test/wct1xxp.c:37:
> /home/tzafrir/Proj/Asterisk/Svn/dahdi-linux/include/dahdi/kernel.h:287: error: expected specifier-qualifier-list before ‘echo_can_disable_detector_state_t’
> /tmp/test/wct1xxp.c: In function ‘t1xxp_rbsbits’:
> /tmp/test/wct1xxp.c:562: error: ‘struct dahdi_chan’ has no member named ‘txsig’
> /tmp/test/wct1xxp.c:566: error: ‘struct dahdi_chan’ has no member named ‘txsig’
> /tmp/test/wct1xxp.c:569: error: ‘struct dahdi_chan’ has no member named ‘txsig’
> /tmp/test/wct1xxp.c: In function ‘t1xxp_startup’:
> /tmp/test/wct1xxp.c:617: error: ‘struct dahdi_chan’ has no member named ‘lin2x’
> /tmp/test/wct1xxp.c:619: error: ‘struct dahdi_chan’ has no member named ‘lin2x’
> /tmp/test/wct1xxp.c: In function ‘t1xxp_check_sigbits’:
> /tmp/test/wct1xxp.c:971: error: ‘struct dahdi_chan’ has no member named ‘rxsig’
> /tmp/test/wct1xxp.c:979: error: ‘struct dahdi_chan’ has no member named ‘rxsig’
> /tmp/test/wct1xxp.c:997: error: ‘struct dahdi_chan’ has no member named ‘rxsig’
> make[1]: *** [/tmp/test/wct1xxp.o] 1 הלקת
> make: *** [_module_/tmp/test] 2 הלקת
> make: Leaving directory `/usr/src/linux-headers-2.6.26-1-amd64'
> 
> 
> dahdi_config.h seems to me indeed part of the interface. ecdis.h is
> mostly implementation and internal to dahdi.

I opened up a branch for that:

http://svn.digium.com/view/dahdi/linux/team/tzafrir/ext-build/

http://svn.digium.com/view/dahdi?view=revision&revision=6164

http://svn.digium.com/view/dahdi?view=revision&revision=6166

-- 
               Tzafrir Cohen
icq#16849755              jabber:tzafrir.cohen at xorcom.com
+972-50-7952406           mailto:tzafrir.cohen at xorcom.com
http://www.xorcom.com  iax:guest at local.xorcom.com/tzafrir