[ILUG] ksh question

[Braun Brelin]

Hello all,

Someone sent me the following lines in a Makefile:

XML_RULE = @echo " xml-rule $< xml2hpp.xsl $@" && \
$(JAVA_BIN) -cp $(XT_DIR)/xp.jar:$(XT_DIR)/xt.jar \
com.jclark.xsl.sax.Driver \
$< $(CMKCMK)/xml2hpp.xsl $@

They wanted to know what the "$<" and "$@" symbols mean.

The make program is running under ksh.

The $@ is almost certainly the builtin array $@ for command line arguments,
but I'm having a hard time finding any reference for $<.  Is this command
substitution
a la $(<some_file) ?

I know that $< in Perl is the real uid of the
program but that doesn't seem to make any sense in this context.

My guess is that it's some variant of input redirection.

Anyone else know what $< is in KSH?

Thanks,

Braun Brelin