Porting

#
# $Id: Porting,v 1.2 2003-08-19 09:02:22 tigran Exp $
#


                P O R T I N G    I S S U E
	

There are several places to take a care.

xx) Makefiles
    The good place to start is Makefile.sun. Copy it to new one.

    cp Makefile.sun Makefile.newos

    Make a modifications which fits into your system.

    CC - C compiler
    CFLAGS - flags used by C compiler
    MAKEDEP - command to generate file dependencies, usually, CC with some flags
    SO_EXT - extention for dynamic library ( .so or .dll )
	A_EXT - extention for static llibrary ( .a or .lib )
    EXE_EXT - extention for executable ( .exe )
	AR - maintain portable archive or library ( ar )
	ARGLAGS - flags used by AR, ( rv )
	RANLIB - generate index to archive ( ranlib )
    MAP - way to tell to LD how to make a library export section
    CPP - C preprocessor, usually $(CC) -E
    LIBS - external libraries ( libpthread, libsocket and so on )
    LDFLAGS - LD flag to create a dynamic library

    Take a result of a 'uname' application  on your system and modify
general Makefile:

			NewOS) \
			$(MAKE) -f Makefile.newos $@ ;\

    If your system is not a UNIX clone, then you are in trouble :)


xx) Threads
    If your system natively supports POSIX threads API, you are done.
If not, add your system specific macros into sysdep.h. 

xx) System IO
	The library supports three methods of accessing system native IO calls.
The first is direct kernel calls. Second is using hooks form libc.
And third is by calling corresponding function, which won't work in 
case of preload library and will produce "out of stack" error. To enable
kernel calls, you have to add -DBSD_SYSCALLS to CFLAGS. The libc hooks
enabled by adding -DLIBC_SYSCALLS. In addition -DLIBC=<path to libc>
and corresponding function symbols in libc have to be specified. If none
if none of the system io methods specified, corresponding io calls used.


xx) Byteorder
    The dcap library designed to use LARGE FILES. During network operations
required ntohll htonll functions, which is not included into standard libraries and libdcap has its own implementation, which byteorder dependent. 



FILEs  to be modified:

dcap.c
sysdep.h
system_io.c
system_io.h
byteorder
socklen_t
Makefile.xxxx
Makefile