SR is targeted for these systems:
	Vax (BSD Unix, or Ultrix with gcc)
	Decstation 3100 (Ultrix)
	Sun 2, Sun 3, or Sun 4 (SunOS)
	NeXT (Mach)
	Encore Multimax (Umax 4.2)
	HP 9000 series 300 (Bobcat) (HP-UX 6.5)
	HP 9000 series 800 (Spectrum, Precision) (HP-UX 3.0)

Besides the standard C compiler, SR has been built on several systems using
the GNU C compiler (gcc) from the Free Software Foundation.  Gcc is the ONLY
compiler that works under Vax Ultrix, though cc works fine on Decstation 3100
Ultrix.

Some recently tested systems include:
	Vax 8650, Mt Xinu 4.3 R2, gcc v1.35 and cc
	Vax 8600, Ultrix 2.3, gcc v1.35
	Vax 750, 4.3 BSD, cc
	Decstation 3100, Ultrix 2.0 rev 7, cc
	Sun 4/110, SunOS 4.0.3
	Sun 3/140, SunOS 4.0, gcc v1.35 and cc
	Sun 3/160, SunOS 3.4, cc
	Sun 2/120, SunOS 3.4, cc
	NeXT, Mach 0.9, cc (which is a modified gcc v1.26)
	NeXT, Mach 0.9, cc, CCPATH=gcc v1.35
	Encore Multimax, Umax 4.2 (R3_2.1)
	HP 9000/320, HP-UX 6.2
	HP 9000/330, HP-UX 6.01 (slightly modified)
	HP 9000/350, HP-UX 6.5
	HP 9000/825, HP-UX 2.0 (using cc from HP-UX 3.0)
	HP 9000/840, HP-UX 2.0 (using cc from HP-UX 3.0)


Special notes for particular systems:

Sun 4 (SPARC):
    The Sun4 code is a very recent addition, and there is an unresolved
    problem where programs are unduly sensitive to the size of a process
    stack.  The default size of 37000 works for the vast majority of
    programs we've tried, but decreasing or even increasing this value
    can cause a segmentation fault.  Any assistance in fixing this would
    be most welcome!

Vax Ultrix (does not apply to BSD Unix or to Decstation Ultrix):
    The standard "cc" compiler reports
	compiler error: out of tree space; simplify expression
    The GNU C compiler (gcc) can handle the generated code;
    redefine CC and CCPATH in the main Makefile to reference gcc.
    We have not produced a version of SR that works with vcc.

Encore Multimax:
    The nap() operation doesn't always nap long enough; this appears to be a
    system problem.  It's been reported, but no response has been received.

HP 9000/800 series:
    Be sure to change RSHPATH as indicated in ./Makefile.
    The HP-UX 2.0 C compiler can't handle SR; the 3.0 compiler is required.

HP 9000/300 series:
    Be sure to change RSHPATH and CFLAGS as indicated in ./Makefile.
    Some problems destroying virtual machines have been seen under
    HP-UX versions older than 6.5.

NeXT computer system:
    The C compiler included in release 0.9 generates bad code for some string
    concatenation operations.  We were able to fix this by building and using
    gcc v1.35 as the back end (changing only the CCPATH Makefile variable).
