Dear Developer, 

would you please share which pcre.h file ? due to my compiling source kamailio 5.5.4 found error as captured below. 

In file included from dialplan.c:59:

dialplan.h:33:10: fatal error: pcre.h: No such file or directory

   33 | #include <pcre.h>

      |          ^~~~~~~~

compilation terminated.

Kind Regards,