Singular Makefile for different target architectures

[Micky Liu]

Following is a very simplistic Makefile for building executables from a
single source tree for machines of different architectures.  I received
many inquiries for the information I gathered, but I only received one
clue...  I ended up using the VPATH variable which does not work on the SGI,
so I will be installing GNUmake probably...

This Makefile has several deficiencies, it will only build the primary
target (I will work on multiple targets later).  It does not know anything
about RCS (my next job).  Other than that it works okay as long as the
VPATH variable works for your particular flavor of make.

What it does is determine the type of machine it is running on, I made symlinks
to /bin/true where applicable and /bin/false in other places (lame I know but
hey it works).  Then it makes a recursive call to itself setting some 
variables and voila!

Have Fun!

Micky

  arpa: micky at cunixc.cc.columbia.edu
  uucp: ...!rutgers!columbia!cunixc!micky
bitnet: malua at cuvmc

==========================================================================

SHELL=/bin/sh

all:
	@if convex; then \
		make t \
		ARCH="convex" \
		FC="/usr/convex/fc" \
		VPATH="./convex" \
		FFLAGS="-vfc -O0"; \
	elif iris; then \
		make t \
		ARCH="iris" \
		FC="/usr/bin/f77" \
		VPATH="./iris" \
		FFLAGS=""; \
	elif apollo; then \
		make t \
		ARCH="apollo" \
		FC="/usr/bin/f77" \
		VPATH="./apollo" \
		FFLAGS=""; \
	fi



SRCS = t.f t1.f

OBJS = t.o t1.o


.f.o:
	$(FC) $(FFLAGS) -c $*.f
	mv $*.o $(ARCH)/.

t.o:	t.f
t1.o:	t1.f


t:	$(OBJS)
	$(FC) $(OBJS) -o $(ARCH)/t