[cs631apue] Makefile in different platforms

[Jan Schaumann]

Hongyi Shen <hshen4 at stevens.edu> wrote:
> According to some material, my Makefile has something like this:
> 
> ROOT=.
> PLATFORM=$(shell uname -s)
> include $(ROOT)/Make.on.$(PLATFORM)

This is GNU make syntax.  On systems where make is not GNU make, this
will not work.

You can either write a portable Makefile that works on all platforms, or
you can supply per-platform Makefiles that the user would have to
choose, for example by invoking 'make -f Makefile.Linux'.

-Jan