Problem with new version of bison's code

[JA . Tursunov]

Hello developers of the project "bison"! The task following: There is OS 
Tsentos and sets the Kannel (SMS gateway: https://www.kannel.org/). When 
you install (yum groupinstall "Development tools") "Development tools" 
installed bison version 3.0.4 (bison.x86_64 3.0.4-1.el7 @base). When 
compiling the Kannel, an error occurs: 

In file included from wmlscript/wslexer.c:72:0:
y.tab.h:264:5: error: conflicting types for ‘ws_yy_parse’
In file included from wmlscript/wslexer.c:70:0:
wmlscript/wsint.h:296:5: note: previous declaration of ‘ws_yy_parse’ was 
here
 int ws_yy_parse(void *context);
     ^
make: *** [wmlscript/wslexer.o] Error 1

and all sources
(
http://kannel.6189.n7.nabble.com/Make-ERROR-in-Revision-5141-amp-with-Stable-Release-1-4-4-td31254.html
https://www.kannel.org/pipermail/users/2014-August/021422.html
http://kannel.6189.n7.nabble.com/ANNOUNCE-Kannel-1-4-4-stable-release-available-td30415.html
)
refer to the fact that if you install version 2.5 instead of 3.0.4, then 
the problem is solved. I don't want to use bother this way because the 
installation will have to be repeated many times.  And the question 
arises, how can this problem be solved! Thanks in advance



Sincerely,
Tursunov Jamshid Asadullaevich
The Engineer of the Department of Monitoring and Administration
T: 0 436 227-7698 | M: +998 93 521-7698 | E: address@hidden
Navoi Mining & Metallurgical Combinat (NMMC)
Address: Str. 27 Navoi, Navoi, Uzbekistan, 210100