On Wed, Dec 23, 2020 at 1:24 PM John Millikin <jmillikin@xxxxxxxxx> wrote:
>
> On Wed, Dec 16, 2020 at 2:46 PM Masahiro Yamada <masahiroy@xxxxxxxxxx> wrote:
> >
> > Does it depend on the awk version?
> >
> > I tried this in FreeBSD 12.
> >
> > masahiro@:~ $ cat test.awk
> > BEGIN { print N }
> > masahiro@:~ $ awk --version
> > awk version 20121220 (FreeBSD)
> > masahiro@:~ $ awk -ftest.awk -vN=1
> > 1
> >
> > It worked for me.
> >
>
> Yes, it appears to be version dependent. Apologies for the confusion
> -- I didn't realize there were multiple dialects of BSD awk.
>
> On FreeBSD and OpenBSD awk works with the existing command. On NetBSD
> and macOS awk fails with the following error:
>
> $ touch unroll.awk input.c
> $ awk -f./unroll.awk -vN=0 < input.c
> awk: can't open file -vN=0
> source line number 1 source file -vN=0
> context is
> >>> <<<
> $
>
> My patch lets the $(UNROLL) command support the NetBSD/macOS variant
> -- this is needed to support building the Linux kernel on a macOS host
> machine.
I see, the default awk on macOS is quite old.
$ awk --version
awk version 20070501
Please update the commit description
to mention this issue happens on NetBSD/macOS.
--
Best Regards
Masahiro Yamada
