Date: Wed, 28 Jul 2021 13:17:44 -0600 From: Warner Losh <imp@bsdimp.com> To: Michael Butler <imb@protected-networks.net> Cc: freebsd-current <freebsd-current@freebsd.org>, Ed Maste <emaste@freebsd.org> Subject: Re: awk behaviour? Message-ID: <CANCZdfqJdDbPz2N2MRuTQRrdie=wKRx7EH7sF7VQHQ%2BBvqj_Dg@mail.gmail.com> In-Reply-To: <04456969-bee0-8b22-4e81-a3201824d852@protected-networks.net> References: <8e1a8e3c-b062-7749-ceab-e500c1ab758e@protected-networks.net> <CANCZdfp1nTx0%2B4ZKWYOPN9WtBzDPHYRnzLL58=Ni7giwFQFmfw@mail.gmail.com> <04456969-bee0-8b22-4e81-a3201824d852@protected-networks.net>
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--000000000000eb3dee05c833d7dc Content-Type: text/plain; charset="UTF-8" On Wed, Jul 28, 2021 at 1:12 PM Michael Butler <imb@protected-networks.net> wrote: > On 7/28/21 1:36 PM, Warner Losh wrote: > > On Wed, Jul 28, 2021 at 11:31 AM Michael Butler via freebsd-current < > > freebsd-current@freebsd.org> wrote: > > > >> I tripped over this while trying to build a local release .. > >> > >> imb@toshi:/home/imb> pkg --version | awk -F. '{print $$1 * 10000 + $$2 > * > >> 100 + $$3}' > >> 10001 > >> > >> imb@toshi:/home/imb> pkg --version > >> 1.17.1 > >> > >> Is this expected? > >> > > > > Why $$ instead of $? $ isn't expanded in '' expressions, so doubling > isn't > > necessary > > unlike in make... With single quotes it works for me: > > > > % pkg --version | awk -F. '{print $1 * 10000 + $2 * 100 + $3}' > > 11603 > > % pkg --version > > 1.16.3 > > > > In awk $$n is $($n), so $$ in this context would evaluate $1 to 1 and > then > > $1 to be 1. And then $2 to be 16 > > and then $17 to be 0 and then $3 to be 1 and then $1 to be 1 which leads > to > > 10001. > > What prompted the question was my (obviously poor) attempt to debug and > resolve this failure when attempting to build a release for i386 on an > amd64 .. > > make -C /usr/src/release obj > make -C /usr/src/release ftp cdrom memstick.img mini-memstick.img > mkdir -p dist > cd /usr/src/release/.. && make TARGET_ARCH=i386 TARGET=i386 > distributeworld DISTDIR=/usr/obj/usr/src/i386.i386/release/dist > make[3]: "/usr/obj/usr/src/i386.i386/toolchain-metadata.mk" line 1: > Using cached toolchain metadata from build at > vm01.auburn.protected-networks.net on Wed Jul 28 18:01:01 UTC 2021 > > make[3]: "/usr/src/Makefile.inc1" line 1864: String comparison operator > must be either == or != > make[3]: "/usr/src/Makefile.inc1" line 2073: String comparison operator > must be either == or != > make[3]: Fatal errors encountered -- cannot continue > make[3]: stopped in /usr/src > *** Error code 1 > I've cc'd emaste to see if this is related to his recent changes. Warner --000000000000eb3dee05c833d7dc--
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