Re: [HACKERS] Re: pgsql/src (Makefile.global.in)

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