Обсуждение: trying to use libpq in Ubuntu
Hello,
I have developed an application in C++ under Qt in Windows XP, now I would like to port it to Ubuntu GNU/Linux.
Choosing the libraries in Windows was a piece of cake: the bottom of my Qt qmake project file was
win32 {
LIBS += "C:\Progra~1\PostgreSQL\8.4\lib\libpq.lib"
INCLUDEPATH += "C:\Progra~1\PostgreSQL\8.4\include"
}
linux-g++ {
LIBS += /usr/lib/libpq.a
INCLUDEPATH += /usr/include/postgresql
}
This works fine in Windows, but in Ubuntu there are more than a hundred undefined symbols, like references to ldap
Does anyone have a sample project file or suggestions?
Thankyou
Henri
Henri De Feraudy wrote:
> linux-g++ {
> LIBS += /usr/lib/libpq.a
> INCLUDEPATH += /usr/include/postgresql
> }
Try:
linux-g++ {
LIBS += -lpq
INCLUDEPATH += /usr/include/postgresql
}
Also make sure that you have the libpq-dev package installed.
Best regards,
--
Daniel
PostgreSQL-powered mail user agent and storage: http://www.manitou-mail.org
On Tuesday 21 September 2010, Henri De Feraudy elucidated thus:
> Hello,
> I have developed an application in C++ under Qt in Windows XP, now I
> would like to port it to Ubuntu GNU/Linux.
> Choosing the libraries in Windows was a piece of cake: the bottom of
> my Qt qmake project file was
> win32 {
> LIBS += "C:\Progra~1\PostgreSQL\8.4\lib\libpq.lib"
> INCLUDEPATH += "C:\Progra~1\PostgreSQL\8.4\include"
> }
> linux-g++ {
> LIBS += /usr/lib/libpq.a
> INCLUDEPATH += /usr/include/postgresql
> }
>
> This works fine in Windows, but in Ubuntu there are more than a
> hundred undefined symbols, like references to ldap
> Does anyone have a sample project file or suggestions?
If you are using Qt, why not use the Qt database abstraction classes?
That will save you having to compile directly against the Pg libraries.
j
--
Joshua Kugler
Part-Time System Admin/Programmer
http://www.eeinternet.com - Fairbanks, AK
PGP Key: http://pgp.mit.edu/ ID 0x73B13B6A