Date: Mon, 21 Jun 2010 02:50:04 GMT From: Garrett Wollman <wollman@hergotha.csail.mit.edu> To: freebsd-bugs@FreeBSD.org Subject: Re: bin/148024: Some built-in AT&T/POSIX compat make variables are broken Message-ID: <201006210250.o5L2o4Bj033248@freefall.freebsd.org>
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The following reply was made to PR bin/148024; it has been noted by GNATS. From: Garrett Wollman <wollman@hergotha.csail.mit.edu> To: gcooper@freebsd.org Cc: freebsd-gnats-submit@freebsd.org Subject: Re: bin/148024: Some built-in AT&T/POSIX compat make variables are broken Date: Sun, 20 Jun 2010 22:46:33 -0400 (EDT) In article <mit.lcs.mail.freebsd-bugs/201006210044.o5L0iPXK000857@www.freebsd.org>, gcooper@freebsd.org writes: >foo: bar > @echo target: $@ prereq: $< >$ make -f ~/Makefile.prereq foo >target: foo prereq: > >The above invocation should have printed out: > >target: foo prereq: bar No. $< is only defined for pattern rules. >$< > In an inference rule, the $< macro shall evaluate to the filename >whose existence allowed the inference rule to be chosen for the target. >In the .DEFAULT rule, the $< macro shall evaluate to the current target >name. The meaning of the $< macro shall be otherwise unspecified. ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ -GAWollman
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