[postgis-devel] Best way to check if a function is defined

[Jorge Arévalo]

On Thu, Jun 2, 2011 at 8:17 PM, Paul Ramsey <pramsey at opengeo.org> wrote:
> Checking for a function defined where? In a system library? Could
> start with AC_CHECK_HEADER to see if the header you want is around and
> then to AC_CHECK_FUNC to see if the function you want is around. I'm
> pretty sure Mark has some clever examples of hand-rolled checkers in
> the ac_proj4_version.m4 file in macros.
>
> P.
>

Check for a GDAL function, defined in gdal_alg.h. I can get the
directory by gdal-config --cflags. Then, I should check for that
header file and for a function inside it.

Thanks for the references!

Best regards,
Jorge


> 2011/6/2 Jorge Arévalo <jorge.arevalo at deimos-space.com>:
>> Hello,
>>
>> I'm looking for the best way of checking, in a configure script, if a
>> given function is defined. My bet is grep against the header file
>> where the function is supposed to be defined, but it doesn't seem too
>> smart. Suggestions?
>>
>> Thanks in advance,
>>
>> --
>> Jorge Arévalo
>> Internet & Mobilty Division, DEIMOS
>> jorge.arevalo at deimos-space.com
>> http://es.linkedin.com/in/jorgearevalo80
>> http://mobility.grupodeimos.com/
>> http://gis4free.wordpress.com
>> http://geohash.org/ezjqgrgzz0g
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-- 
Jorge Arévalo
Internet & Mobilty Division, DEIMOS
jorge.arevalo at deimos-space.com
http://es.linkedin.com/in/jorgearevalo80
http://mobility.grupodeimos.com/
http://gis4free.wordpress.com
http://geohash.org/ezjqgrgzz0g