%% lists <[EMAIL PROTECTED]> writes:
l> I have a number of sources that I wish to compile into executables.
l> They can all be processed as:
l> file1: file1.o
l> $(CXX) -o $@ $(STUFF) $<
l> I tried to automate this for files 1-9 by:
l> EXEC_SRCS := file1.cc file2.cc file3.cc ... file9.cc
l> EXECS := $(EXEC_SRCS:.cc=)
l> $(EXECS): $(addsuffix .o,$@)
l> $(CXX) -o $@ $(STUFF) $<
You can't use $@ in the prerequisite list. The target and prerequisites
are expanded immediately as the file is read, but the automatic
variables like $@, $<, etc. are not available until later, when the
command script is being invoked.
See the GNU make manual section on how expansion works.
l> Why doesn't this work? Is there a way to automate a list of files like
l> this? I understand I could probably give all the executable files an
l> extension like .t and then use a pattern substitution to process them
l> all. Any way to do this without a special extension?
Why would you need an extension? If there's no extension, just use:
% : %.o
....
--
-------------------------------------------------------------------------------
Paul D. Smith <[EMAIL PROTECTED]> Find some GNU make tips at:
http://www.gnu.org http://make.paulandlesley.org
"Please remain calm...I may be mad, but I am a professional." --Mad Scientist
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