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Re: replacement of variable placeholders in files

From: Bernd Jendrissek
Subject: Re: replacement of variable placeholders in files
Date: Wed, 22 Aug 2007 13:38:52 +0200

On 8/22/07, Jason Curl <address@hidden> wrote:
> Dizzy wrote:
> > $(top_builddir)/config.status
> > $(SED) -e 'address@hidden/@'"${localstatedir}/@g"
> > $(top_srcdir)/conf/ > $@

You're telling sed to match end-of-line with '$'.  And make is eating
the ${LOCALSTATEDIR} before sed sees it.  Try this:
$(SED) -e 'address@hidden@address@hidden'

> Instead of having the Makefile do this for you, why not during
> 'configure' time with the AC_CONFIG_FILES? And then define the variable
> substitutions as part of the configure script? Even define a macro if
> you want to logically separate everything.

See info node 'Installation Directory Variables':
>   Similarly you should not rely on `AC_OUTPUT_FILES' to replace
>`datadir' and friends in your shell scripts and other files, rather let
>`make' manage their replacement.  For instance Autoconf ships templates
>of its shell scripts ending with `.in', and uses a Makefile snippet
>similar to:

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