| From: | Peter Eisentraut <peter_e(at)gmx(dot)net> |
|---|---|
| To: | Bruce Momjian <bruce(at)momjian(dot)us> |
| Cc: | pgsql-patches(at)postgresql(dot)org |
| Subject: | Re: SGML index build fix |
| Date: | 2007-01-07 18:58:24 |
| Message-ID: | 200701071958.25157.peter_e@gmx.net |
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| Thread: | |
| Lists: | pgsql-hackers pgsql-patches |
Bruce Momjian wrote:
> I wrote:
>
> ifeq (,$(wildcard bookindex.valid))
> echo "Run 'gmake' again to generate output with a proper index"
> endif
>
> but that warns on the first _two_ runs, meaning it expanded at the
> time the rule started, not at the time it hit that line.
This expands at the time the makefile is read. You may get it to work
with
target:
$(if $(wildcard blah), this, that)
The following may be helpful:
http://www.gnu.org/software/make/manual/html_node/Reading-Makefiles.html#Reading-Makefiles
--
Peter Eisentraut
http://developer.postgresql.org/~petere/
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