Re: [HACKERS] are there any cons to linking libstdc++ with postgresql?

2004-11-18 Thread Reini Urban
Palle Girgensohn schrieb:
I'm not a linking guru... Is there a penalty for setting LDFLAGS+= 
-lstdc++ when building postgresql?

Postgis includes a bunch of useful functions for manipulating spatial
data. Some of them are provided by geos, a separate c++ library, with
postgis providing wrappers.
According to postgis docs, postgresql _must_ be configured with LDFLAGS
containing -lstdc++ for this to work. I can confirm this.
The postgis port provides the WITH_GEOS tunable, but it has no effect
unless the above adjustment is made to postgresql. The port makes no
mention of this. Is there a penalty in just leaving
 LDFLAGS+= -lstdc++
in the postgresql port Makefile? Bad idea? What do you think?
I'd rather use a libgeos wrapper using just extern C entry points,
not the C++ mangled entries.
Haven't checked yet how much trouble this may cause on geos, and if it 
will work with the exceptions. And if a simple .def with aliases would 
be enough. libgeos is huge.
--
Reini Urban
http://xarch.tu-graz.ac.at/home/rurban/

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[HACKERS] are there any cons to linking libstdc++ with postgresql?

2004-11-17 Thread Palle Girgensohn
Hi!
I'm not a linking guru... Is there a penalty for setting LDFLAGS+= -lstdc++ 
when building postgresql?

Postgis includes a bunch of useful functions for manipulating spatial
data. Some of them are provided by geos, a separate c++ library, with
postgis providing wrappers.
According to postgis docs, postgresql _must_ be configured with LDFLAGS
containing -lstdc++ for this to work. I can confirm this.
The postgis port provides the WITH_GEOS tunable, but it has no effect
unless the above adjustment is made to postgresql. The port makes no
mention of this. Is there a penalty in just leaving
 LDFLAGS+= -lstdc++
in the postgresql port Makefile? Bad idea? What do you think?
/Palle
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Re: [HACKERS] are there any cons to linking libstdc++ with postgresql?

2004-11-17 Thread Tom Lane
Palle Girgensohn [EMAIL PROTECTED] writes:
 Is there a penalty in just leaving
 LDFLAGS+= -lstdc++
 in the postgresql port Makefile? Bad idea?

Yup.  The portability hazards are considerable.  I'm a bit surprised the
postgis guys seem to think it works.

regards, tom lane

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