Quoth Greg A. Woods on Thu, Nov 12, 1998:
> Others may have more specific information, but according to my
> experience and the SunOS 5.6 make(1) manual page, the default SunOS make
> is still very specific to Sun. However it seems there are now optional
> operating "modes", such as a POSIX mode (/usr/xpg4/bin/make [which is
> rarely installed] or put a ".POSIX:" target in the Makefile) and a SysV
> mode (-V).
"make", "make" with .POSIX: target, /usr/xpg4/bin/make, and "make
-V" (where make is /usr/ccs/bin/make) all give the same results,
exactly what I described in the previous post of mine. On the
following OS:
SunOS solx86 5.6 Generic i86pc i386 i86pc
I haven't tried Solaris on Sparc yet. But I'm not really
interested. I'm interested in the conclusions below, and the
fact that there is at least one version of make(1) in which
`backticks` are the only way to do it.
Conclusion:
VAR != command args
works with BSD make.
VAR = $(shell command args)
works with gmake.
VAR = `command args`
is the only portable, but highly inefficient way to achieve this.
Vadik.
--
It was state of the art, he said.
The art in this case was probably pottery.
-- Terry Pratchett and Neil Gaiman, "Good Omens"
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