The soapcpp2 compiler source distribution contains the following files:

README.txt	This file
Makefile	Unix/linux makefile
soapcpp2.h	Main header file
soapcpp2.c	Main application
symbol2.c	Symbol table handling and code generation module
error2.h	Header file for error2.c
error2.c	Error handling routines
init2.c		Compiler symbol table initialization
soapcpp2_lex.l	Flex/Lex tokens
soapcpp2_yacc.y	Yacc/Bison grammar

BUILD NOTES

QNX
===

On QNX the bison.simple file is located in $QNX_HOST/usr/share/bison.simple
Update your .profile to include:

export BISON_SIMPLE=$QNX_HOST/usr/share/bison/bison.simple 
export BISON_HAIRY=$QNX_HOST/usr/share/bison/bison.hairy 

WIN32
=====

Bison 1.6 can crash on Win32 systems if YYINITDEPTH is too small:
Compile with /DYYINITDEPTH=5000