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Author
Topic: Postgresql woes (Read 1406 times)
Trenatos
Hero Member
Posts: 535
Postgresql woes
«
on:
August 06, 2020, 08:38:52 am »
I've just installed Postgresql 12 on my Windows 10 dev machine, but I can't get my program to recognize the driver.
When I place it in the same directory as the executable, I get
Code: Pascal
[Select]
[+]
[-]
Can
not
load PostgreSQL client
library
"libpq
.
dll
"
When I try to use the SQLDBLibraryLoader and specify the path I get the same message.
I used Stack Builder to get the x64 driver.
Anyone else run into this issue?
«
Last Edit: August 06, 2020, 06:09:25 pm by Trenatos
»
Logged
marcov
Administrator
Hero Member
Posts: 11447
FPC developer.
Re: Postgresql woes
«
Reply #1 on:
August 06, 2020, 09:18:58 am »
So... do you generate a 64-bit EXE ?
Logged
MarkMLl
Hero Member
Posts: 6683
Re: Postgresql woes
«
Reply #2 on:
August 06, 2020, 11:36:03 am »
Is libpq.dll on the system? Does the variant of PostgreSQL you installed include psql, and does it run?
MarkMLl
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MT+86 & Turbo Pascal v1 on CCP/M-86, multitasking with LAN & graphics in 128Kb.
Pet hate: people who boast about the size and sophistication of their computer.
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marcov
Administrator
Hero Member
Posts: 11447
FPC developer.
Re: Postgresql woes
«
Reply #3 on:
August 06, 2020, 11:57:59 am »
And note that the client (pqsql.dll) doesn't have to match the server in 32/64-bit bitness.
But the dll
must
match the generated application 32/64-bit status.
Logged
korba812
Sr. Member
Posts: 394
Re: Postgresql woes
«
Reply #4 on:
August 06, 2020, 12:32:36 pm »
Another note is that libpq.dll may depend on other libraries (in my case libcurl.dll, libeay32.dll, libiconv.dll, libintl.dll, libpq.dll, libxml2.dll, libxslt.dll ,ssleay32.dll, zlib1.dll)
Logged
MarkMLl
Hero Member
Posts: 6683
Re: Postgresql woes
«
Reply #5 on:
August 06, 2020, 03:07:09 pm »
And yet another note is that on at least some platforms, you might need to state explicitly where the dynamic libraries may be found.
I mention that since even if it doesn't apply to current Windows, if we're talking about this problem we might as well be complete for the next time Google decides to turn up an unexpected reference :-)
MarkMLl
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Trenatos
Hero Member
Posts: 535
Re: Postgresql woes
«
Reply #6 on:
August 06, 2020, 05:28:01 pm »
I'm generating a 64bit exe.
I just made a new gui project, added a button and a TSQLDBLibraryLoader, set the connection type to Postgresql, and the buttons click handler sets enabled to true.
When I start the program I immediately get an error "Invalid connection type:'PostgreSQL'" (Before the form is even visible)
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Trenatos
Hero Member
Posts: 535
Re: Postgresql woes
«
Reply #7 on:
August 06, 2020, 06:09:17 pm »
I DID get it working using ZeosDB, so that's good. But could not get it working with the Lazarus bundled functionality.
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