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<DIV dir=ltr align=left><SPAN class=125123900-12032009><FONT face=Arial
color=#0000ff>Eehab,</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=125123900-12032009><FONT face=Arial
color=#0000ff></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=125123900-12032009><FONT face=Arial
color=#0000ff>Since this looks like a standard PostgreSQL c function, you might
have more luck asking this question in PostgreSQL general mailing
list.</FONT></SPAN></DIV><BR>
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<FONT face=Tahoma><B>From:</B> postgis-users-bounces@postgis.refractions.net
[mailto:postgis-users-bounces@postgis.refractions.net] <B>On Behalf Of </B>eehab
hamzeh<BR><B>Sent:</B> Wednesday, March 11, 2009 7:16 AM<BR><B>To:</B>
postgis-users@postgis.refractions.net<BR><B>Subject:</B> [postgis-users] writing
function using C<BR></FONT><BR></DIV>
<DIV></DIV><FONT style="FONT-SIZE: 10pt">Dear all,<BR><BR><BR><BR>I try to
compile the code below to dynamic library, the problem if i declare
the variable type to anything else int32, i recieve the error as below,
any body have experience in writing functions using c<BR><BR>i use VC++
6.<BR><BR>Kind regards<BR><BR>ihab<BR><BR><BR>extern "C" {<BR>Datum
add_one(PG_FUNCTION_ARGS) {<BR> float8 arg =
PG_GETARG_FLOAT8(0);<BR> float8 arg1 =
PG_GETARG_FLOAT8(1);<BR><BR> PG_RETURN_FLOAT8(arg +
arg1);<BR>}<BR><BR><BR><BR><BR><BR>--------------------Configuration: eehab -
Win32 Release--------------------<BR>Linking...<BR> Creating library
Release/eehab.lib and object Release/eehab.exp<BR>eehab.obj : error LNK2001:
unresolved external symbol _Float8GetDatum<BR>Release/eehab.dll : fatal error
LNK1120: 1 unresolved externals<BR>Error executing link.exe.<BR><BR>eehab.dll -
2 error(s), 0 warning(s)</FONT><BR>
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