Date: Wed, 7 Sep 2005 16:55:41 +0300 From: Giorgos Keramidas <keramida@ceid.upatras.gr> To: Nils Vogels <nivo+d+1126704071.531482@yuckfou.org> Cc: freebsd-questions@freebsd.org Subject: Re: Makefile woes Message-ID: <20050907135540.GA10237@orion.daedalusnetworks.priv> In-Reply-To: <431EE940.30604@yuckfou.org> References: <431EE940.30604@yuckfou.org>
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On 2005-09-07 15:21, Nils Vogels <nivo+sender+6075ff@yuckfou.org> wrote: > Hi there ! > > I'm trying to write a Makefile and it's my first time writing a bit more > complex one .. I seem to be stuck and examples currently are not very > helpful, so I thought I'd try here: > > What I am trying to do is differ the way of building depending if a > variable has been defined, my current Makefile looks like this: > > build_1: > @cd /build/dir && make OPTION=set > > build_2: > @cd /build/dir && make > > build: > .if defined(WANT_OPTION) > HAS_OPTION?=1 > ${MAKE} build_1 > .else > HAS_OPTION?=0 > ${MAKE} build_2 <-- error in this line > .endif If the indentation shown above is what you are truly using and not what your mailer thinks is a good way to format it, you are missing vital whitespace before the build commands of the ``build'' target. Please note that the above makefile will build the build_1 target by default, as this is the first target that appears in the Makefile. I'd probably write this a little differently, moving all the conditional material out of the target build commands: # # Pick the default target, depending on WANT_OPTION. # .if defined(WANT_OPTION) HAVE_OPTION?= 1 BUILD_TARGET= build_1 .else HAVE_OPTION?= 0 BUILD_TARGET= build_2 .endif build: $(BUILD_TARGET) build_1: @cd /build/dir && make OPTION=set build_2: @cd /build/dir && make > Whenever I run "make build" I get: > > "Makefile", line xx: Need an operator > make: fatal errors encountered -- cannot continue This is usually an indication of whitespace/indentation errors.
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