Re: questions about the configure script for building postgres 9.0.3 from source

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Stephan Doliov <stephandoliov@xxxxxxxxx> writes:
> I trolled the archives as I was having difficulty in building Postgres 9.0.3 
> from source.  I was running configure with the following options (the pasted in 
> text of this I had wrapped in a shell script).  I apologize in advance that 
> setting up the question takes a bit of context.

> ./configure  CFLAGS='-O2 -I /usr/local/include:/usr/include -L 
> /usr/local/lib64:/usr/local/lib:/usr/lib64:/usr/lib'  --prefix=/usr/local 
> --enable-nls --enable-profiling  --with-wal-segsize=64  --with-perl 
> --with-python  --with-pam  --with-ldap --with-openssl --with-ossp-uuid 
> --with-libxml --with-libxslt  --with-system-tzdata=/usr/share/zoneinfo 
> --with-libs=/usr/local/lib64:/usr/local/lib:/usr/lib64:/usr/lib:/usr/apache2/lib 
> --with-includes=/usr/local/include:/usr/include

> and I was constantly receiving the error that libreadline was not installed, 
> although I had personally installed it, verified its installation and ensured 
> that ldconfig could find it.

Are you sure it's complaining about readline's library, and not
readline's header files?  That rather random --with-libs list draws my
suspicion, particularly since it doesn't parallel your --with-includes
list.

> Upon inspecting config.log, I found many references to an error in conftest.c, 
> where various ifndef macros were suggesting a call to "choke me", which is both 
> invalid syntax (no semi colon and of course choke is not defined either in any 
> header files.

That's pretty normal --- configure likes to try to compile things like

	#ifdef SYMBOL
	choke me
	#endif

to find out whether SYMBOL is defined.  (If it is, this'll draw a
compile error, else not.)  Elegance is not really something autoconf
puts high priority on ...

> So my questions are:
> 1) upon not finding libs such as xml, xslt or the msgfmt binary, is the 
> configure script set (perhaps by bug) to report that libreadline is not 
> installed (when in fact it is?).

No, I doubt that.

> Another way of phrasing this question: does 
> configure misreport that which is missing?

And that too.  You'd need to show some actual evidence, and not a highly
abstracted summary, to convince anyone that you've found a configure
bug.

			regards, tom lane

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