# Boost.Iostreams Library zlib Jamfile

# (C) Copyright Jonathan Turkanis 2004
# Distributed under the Boost Software License, Version 1.0. (See accompanying 
# file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt.)

# See http://www.boost.org/libs/iostreams for documentation.

# For use in conjunction with the zlib data compression library by
# Jean-loup Gailly and Mark Adler. See http://www.zlib.org/ to obtain zlib
# if it is not installed on your system, or if you wish to build it with
# different compiler or linker options.
         
rule zlib_config 
{
    if $(NO_COMPRESSION)
    {
         NO_ZLIB = 1 ;
    } 

    if $(NT) && ! $(ZLIB_SOURCE) && ! $(ZLIB_INCLUDE)
    {
         ECHO ****************************************************** ;
         ECHO Building Boost.Iostreams with zlib and gzip support disabled. ;
         ECHO To enable zlib and gzip, consult the Boost.Iostreams documentation ;
         ECHO ****************************************************** ;    
         NO_ZLIB = 1 ;
    }
    
    if ! $(NO_ZLIB) 
    {
        local SOURCES = adler32 compress crc32 deflate inffast  
                        inflate inftrees trees uncompr zutil ; 
        ZLIB_INCLUDE ?= $(ZLIB_SOURCE) ;

        # define ZLIB_BINARY 
        if ! $(ZLIB_SOURCE) && ! $(ZLIB_BINARY)
        {
            if $(NT) && ! [ MATCH (.*gcc.*) : $(TOOLS) ]
            {
                ZLIB_BINARY = "zdll" ;
            }
            else 
            {
                ZLIB_BINARY = "z" ;
            }
        }

        # declare boost_zlib boost_zlib
        if $(ZLIB_SOURCE)
        {
            template zlib_common
                : # sources
                  $(ZLIB_SOURCE)/$(SOURCES).c
                : # build requirements
                  [ common-names ]  # magic for install and auto-link features
                  <include>$(ZLIB_INCLUDE)
                : # build variants
                  debug release 
            ;       

            lib boost_zlib
                : # sources
                  <template>zlib_common
                : # build requirements
                : # build variants
                ;

            dll boost_zlib
                : # sources
                  <template>zlib_common
                : # build requirements
                  <define>ZLIB_DLL=1 # tell source we're building dll's
                  <runtime-link>dynamic # build only for dynamic runtimes
                : # build variants
                ;
                
            install zlib lib
                : <lib>boost_zlib 
                ;   
        }
    }
}

zlib_config ;

template zlib
    : # sources
      [ unless $(NO_ZLIB) : ../src/zlib.cpp ]
      [ cond $(ZLIB_SOURCE) : <lib>boost_zlib : ]
    : # build requirements
      [ unless $(NO_ZLIB) : <include>$(ZLIB_INCLUDE) ]
      [ unless $(NO_ZLIB) OR $(ZLIB_SOURCE) 
        : <define>BOOST_ZLIB_BINARY=$(ZLIB_BINARY) ]
      [ cond $(ZLIB_LIBPATH) : <library-path>$(ZLIB_LIBPATH) : ]
      [ unless $(ZLIB_SOURCE) : <find-library>$(ZLIB_BINARY) : ]
    : # build variants
   ;          

# end