[NTLUG:Discuss] gnu make

[Michael Sandfort]

Sorry for the off-topic post, but I'm hoping someone can give me a quick 
and easy fix to this. I've got some source code that I need to compile 
with an included Makefile. 

Short version of the problem:
Does anyone know a quick-and-dirty workaround to the fact that gnu make
does not support the $$@ macro?

Long version: 
The Makefile is designed to compile against a variety of setups (i.e., do
you have software packages Matlab, Gauss, etc.).

Problem 1) When I try to compile for my setup, I get the following error 
from gnu make:
Makefile:170: *** target pattern contains no `%'.  Stop.

Getting rid of the offending line (it pertains to another system setup) 
gets rid of this error, but I would like to know why it is happening. 
Line 170 reads:

$(MATLAB_MEX): $${@:.mexsol=.o} $(MATLAB_DIR)/mexversion.o $(MATLAB_OTHER) $(OPENLIBS_Matlab) $(CLOSEDLIBS) 
	$(LD) $(MLDFLAGS) -o $@ ${@:.mexsol=.o} $(MATLAB_DIR)/mexversion.o \
	$(MATLAB_OTHER) $(OPENLIBS_Matlab) $(CLOSEDLIBS)

Problem 2) Even when the offending line is removed, I get the error:
make: *** No rule to make target `$@.o', needed by `Unix/expect1'.  Stop.

The offending line appears to be

$(UNIXOTHER): $$@.o $(UNIXDEP) $(OPENLIBS) $(CLOSEDLIBS)
	$(CC) -o $@ $@.o $(UNIXOBJ) $(OPENLIBS) $(CLOSEDLIBS) -lm
	$(CC) -g -o $@_db $@_db.o $(UNIXOBJ_DB) $(OPENLIBS_DB) $(CLOSEDLIBS) -lm

Having read the make manual, I know that $$@ is not supported by gnu make 
(unlike it is on SysV and BSD). Is there any way to get around this, 
short of listing every single source/object file?

Thanks much,

Mike


Michael T. Sandfort                           Phone:  214-768-3856       
Department of Economics                       Fax:    214-768-1821
Southern Methodist University