From: | Ian Lance Taylor <ian(at)airs(dot)com> |
---|---|
To: | Peter Eisentraut <peter_e(at)gmx(dot)net> |
Cc: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, <pgsql-committers(at)postgresql(dot)org>, PostgreSQL Development <pgsql-hackers(at)postgresql(dot)org> |
Subject: | Re: [HACKERS] Re: pgsql/src (Makefile.global.in) |
Date: | 2001-01-02 20:53:32 |
Message-ID: | sin1d9ekvn.fsf@daffy.airs.com |
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Lists: | pgsql-committers pgsql-hackers |
Peter Eisentraut <peter_e(at)gmx(dot)net> writes:
> That would probably work, but I'm kind of hesitant to create an empty
> input file in cvs just to serve this marginal feature. (It wouldn't take
> /dev/null because it tries to use .//dev/null.) Moreover, the likely
> candidate name stamp-h.in is sort of reserved for doing the same trickery
> on autoheader, in case we ever use that.
>
> I came up with this:
>
> diff -c -r1.86 configure.in
> *** configure.in 2001/01/01 23:10:09 1.86
> --- configure.in 2001/01/02 19:20:16
> ***************
> *** 1140,1144 ****
> ],
> [
> # Update timestamp for config.h (see Makefile.global)
> ! echo >src/include/stamp-h
> ])
> --- 1140,1144 ----
> ],
> [
> # Update timestamp for config.h (see Makefile.global)
> ! test x"$CONFIG_HEADERS" != x"" && echo >src/include/stamp-h
> ])
>
> This only updates the stamp file if config.h is actually being considered
> by config.status.
That's the usual approach. For example, when automake is used with a
single configuration header in the same directory, it puts this in
configure:
test -z "$CONFIG_HEADERS" || echo timestamp > stamp-h
automake handles these sorts of details automatically.
Ian
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