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Re: shell pwd: non-POSIX variable name ??
From: |
Jules Colding |
Subject: |
Re: shell pwd: non-POSIX variable name ?? |
Date: |
Fri, 30 Mar 2007 09:12:18 +0200 |
Hi Stepan,
On Thu, 2007-03-29 at 16:19 +0200, Stepan Kasal wrote:
> On Thu, Mar 29, 2007 at 02:25:31PM +0200, Jules Colding posted an
> Automake question to the Autoconf list. (Understandable mistake, of
> course.)
Oops... stupid, stupid mistake. Sorry, should be to old for that :-(
> I suppose the question can be deduced from my answer. :-)
>
> > What is the recommended and portable way of doing what I do above to
> > avoid the warnings and to be nice to automake?
>
> > OBJS = $(patsubst %.c,%.o,$(STUB_SRC))
>
> this can ce written portably as:
>
> OBJS = $(STUB_SRC:.c=.o)
OK, thanks.
> > EXTRA_DIST =
> > $(pkgconfig_DATA:-$(LIBBRUTUS_CURRENT).$(LIBBRUTUS_REVISION).pc=.pc.in)
>
> It is not portable to use immersed variable expansion.
> But if LIBBRUTUS_CURRENT and LIBBRUTUS_REVISION are AC_SUBSTed
> variables, you can use the @...@ form here:
>
> EXTRA_DIST = $(pkgconfig_DATA:address@hidden@address@hidden@.pc=.pc.in)
OK.
> > CWD = $(shell pwd)
> > BARE_NAMES = $(notdir $(IDL_FILES))
> > LOCAL_IDL_FILES = $(addprefix $(CWD)/,$(BARE_NAMES))
>
> I do not know any easy way to replace these. You would have to change
> the logic of the makefile.
I was afraid some of those was in that category. Damn, must think
then...
> > Needless to say that all of this worked without any warnings prior to
> > automake-1.10.
>
> To switch these warnings off for a particular Makefile.am, use
>
> AUTOMAKE_OPTIONS = -Wno-portability
>
> To switch them off glibally, use
>
> AM_INIT_AUTOMAKE([-Wno-portability])
>
> in your configure.ac.
OK, good tip.
> For your information, I found this comment in Automake 1.9.5:
> (and I believe is was there since 1.7 till 1.9.6)
>
> # FIXME: 'portability' warnings are currently disabled by default.
> # Eventually we want to turn them on in GNU and GNITS modes, but
> # we don't do this yet in Automake 1.7 to help the 1.6/1.7
> # transition.
> #
> # Indeed there would be only two ways to get rid of these new
> # warnings:
> # 1. adjusting Makefile.am
> # This is not always easy (or wanted). Consider %-rules or
> # $(function args) variables.
> # 2. using -Wno-portability
> # This means there is no way to have the same Makefile.am
> # working both with Automake 1.6 and 1.7 (since 1.6 does not
> # understand -Wno-portability).
> #
> # In Automake 1.8 (or whatever it is called) we can turn these
> # warnings on, since -Wno-portability will not be an issue for
> # the 1.7/1.8 transition.
>
> Have a nice day,
You too and thanks for your help,
jules