| From: | Peter Eisentraut <peter_e(at)gmx(dot)net> |
|---|---|
| To: | Ian Lance Taylor <ian(at)airs(dot)com> |
| Cc: | Thomas Lockhart <lockhart(at)alumni(dot)caltech(dot)edu>, Pete Forman <pete(dot)forman(at)westerngeco(dot)com>, Zeugswetter Andreas SB <ZeugswetterA(at)wien(dot)spardat(dot)at>, <lockhart(at)fourpalms(dot)org>, "'pgsql-hackers(at)postgresql(dot)org'" <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: AW: AW: AW: Re: tinterval - operator problems on AIX |
| Date: | 2001-01-19 23:24:15 |
| Message-ID: | Pine.LNX.4.30.0101200000150.1322-100000@peter.localdomain |
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| Lists: | pgsql-hackers |
Ian Lance Taylor writes:
> An approach I've followed in the past is to use three-way logic. If
> configuring for a native system, compile and run a program which
> provides a yes or no answer. When using cross-configuration, set the
> configuration variable to ``don't know'' (or, since this a database
> group, NULL).
This would seem to be the right answer, but unfortunately Autoconf is not
smart enough to detect marginal cross-compilation cases in all situations.
Someone had zlib installed in a location where gcc would find it (compiles
okay) but the run-time linker would not (does not run). This is not
detected when AC_PROG_CC runs, but only later on after you have checked
for the libraries.
--
Peter Eisentraut peter_e(at)gmx(dot)net http://yi.org/peter-e/
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