To compile this you need a couple things - A working POSIX system with working POSIX sh, awk and sed - GNU Make 3.74 or so, -- normal UNIX make will NOT work - A working ANSI C++ compiler, this is not g++ 2.7.* g++ 2.8 works OK and newer egcs work well also. Nobody has tried it on other compilers :< You will need a properly working STL as well. - A C library with the usual POSIX functions and a BSD socket layer The MD5 routine needs to know about the architecture, many of the common ones are in buildlib/archtable and buildlib/sizetable if your processor/host is not listed then just add them.. This is a list of platforms and information that dsync has been compiled and tested on: Debian GNU Linux 2.1 'slink' Linux Wakko 2.0.35 #1 Sun Nov 15 20:54:42 MST 1998 i586 unknown Linux faure 2.0.35 #1 Tue Oct 30 14:31:28 CST 2018 alpha unknown g++ egcs-2.91.60 dsync 0.0 18/01/1999 - All versions work here - Watch out! You get shared libraries! Use 'make ONLYSHAREDLIBS=' to disable - You will want to have debiandoc-sgml and yodl installed to get best results. Sun Solaris SunOS ohaton 5.6 Generic_105181-11 sun4u g++ 2.8.1 dsync 0.0 18/01/1999 - The Sun I used did not have 'ar' in the path for some reason, it is in /usr/ccs/bin/ar, export this before running configure or edit environment.mak to fix it. - libpthread seems to have some defectiveness issue with pthread_once, it doesn't actually work. The code has a hack to advoid the defectiveness HP-UX HP-UX nyquist B.10.20 C 9000/780 2016574337 32-user license g++ 2.8.1 dsync 0.0 18/01/1999 - I had alot of problems here initially, the utilities are very strict. Things work well now. - The HP-UX I used had gnu-make installed as 'gmake' this causes configure to die when it does 'make dirs' I ran 'gmake dirs' by hand. - There is a snprintf in the libraries someplace but it does not declare it in any header, this causes all sorts of fun compile warnings