Error building lazarus with Qt interface

[belal]

Hello,

I try to build lazarus with QT interface using the command

make clean all lcl LCL_PLATFORM=qt OPT=-dUSE_QT_45

on opensuse 11.2
using fpc 2.4.0
I get error message when linking lazarus: /usr/bin/ld: cannot find -lQt4Pas

Any idea or solution to this problem? Thanks!

[JuhaManninen]

http://wiki.lazarus.freepascal.org/Qt_Interface

You will find there also this:

As of lazarus 0.9.29 svn rev. 23858 2.1 bindings are needed, also bindings name is changed from libqt4intf to libQt4Pas !

[belal]

Thanks 

[VirtUX]

I have an OS PC-BSD 8.0 (FreeBSD)

Code: [Select]

   Linking ../lazarus
    /usr/bin/ld: warning: libc.so.6, needed by /usr/X11R6/lib//libQt4Pas.so, may conflict with libc.so.7
    /usr/local/lib/compat/libc.so.6: warning: WARNING!  setkey(3) not present in the system!
    /usr/local/lib/compat/libc.so.6: warning: warning: this program uses gets(), which is unsafe.
    /usr/local/lib/compat/libc.so.6: warning: warning: mktemp() possibly used unsafely; consider using mkstemp()
    /usr/local/lib/compat/libc.so.6: warning: WARNING!  des_setkey(3) not present in the system!
    /usr/local/lib/compat/libc.so.6: warning: WARNING!  encrypt(3) not present in the system!
    /usr/local/lib/compat/libc.so.6: warning: warning: tmpnam() possibly used unsafely; consider using mkstemp()
    /usr/local/lib/compat/libc.so.6: warning: warning: this program uses f_prealloc(), which is not recommended.
    /usr/local/lib/compat/libc.so.6: warning: WARNING!  des_cipher(3) not present in the system!
    /usr/local/lib/compat/libc.so.6: warning: warning: tempnam() possibly used unsafely; consider using mkstemp()
    /usr/X11R6/lib//libQt4Pas.so: undefined reference to `strlen@GLIBC_2.0'
    /usr/X11R6/lib//libQt4Pas.so: undefined reference to `memmove@GLIBC_2.0'
    lazarus.pp(127,1) Error: Error while linking
    lazarus.pp(127,1) Fatal: There were 1 errors compiling module, stopping
    Fatal: Compilation aborted
    gmake[2]: *** [lazarus] Ошибка 1
    gmake[2]: Leaving directory `/home/atom/bin/lazarus/ide'
    gmake[1]: *** [bigide] Ошибка 2
    gmake[1]: Leaving directory `/home/atom/bin/lazarus/ide'
    gmake: *** [idebig] Ошибка 2
I try to compile Lazarus 0.9.29 SVN (fpc 2.4.0, libQt4Pas.so 2.1, widget Qt). I understand - this is due to the difference in versions of libc, and I have is newer so.7? What to do?

[JuhaManninen]

I have an OS PC-BSD 8.0 (FreeBSD)
<snip>
I try to compile Lazarus 0.9.29 SVN (fpc 2.4.0, libQt4Pas.so 2.1, widget Qt). I understand - this is due to the difference in versions of libc, and I have is newer so.7? What to do?

You could download "Library Source" from
http://users.telenet.be/Jan.Van.hijfte/qtforfpc/fpcqt4.html
and try to compile it. I haven't done that myself but I hope you succeed with it :-)

Mailing list qt@lists.lazarus.freepascal.org is a good place to ask for detailed instructions.

Juha

[VirtUX]

2 JuhaManninen
Thank you very much!

[Soaliar]

Hi, I'm having the same error here.

I have Lazarus 2.29, FPC 2.4.0


I've downloaded the QT4pas V2.1 libraries, and they are in my /usr/lib directory. Also I ran the "ldconfig" and compiled the LCL, but when I try to compile the IDE + Packages I got:

/usr/bin/ld: warning: ./link.res contains output sections; did you forget -T?
/usr/bin/ld: cannot find -lQt4Pas
/usr/lib/lazarus/examples/hello.pp(31,1) Error: Error while linking
/usr/lib/lazarus/examples/hello.pp(31,1) Fatal: There were 1 errors compiling module, stopping

[JuhaManninen]

> I have Lazarus 2.29, FPC 2.4.0

I guess it is Lazarus 0.9.29.

> /usr/bin/ld: cannot find -lQt4Pas

There is something wrong with the library installation. Test in command line with :

Code: [Select]

su
ldconfig -p | grep Qt4

You should get something like:

Code: [Select]

        libQt4Pas.so.5 (libc6) => /usr/local/lib/libQt4Pas.so.5
        libQt4Pas.so (libc6) => /usr/local/lib/libQt4Pas.so

Juha

[Soaliar]

I guess it is Lazarus 0.9.29.

Yes, it's 0.9.29. My mistake.

There is something wrong with the library installation. Test in command line with :

Code: [Select]

su
ldconfig -p | grep Qt4

You should get something like:

Code: [Select]

        libQt4Pas.so.5 (libc6) => /usr/local/lib/libQt4Pas.so.5
        libQt4Pas.so (libc6) => /usr/local/lib/libQt4Pas.so

Juha

I just get "libQt4Pas.so.5 (libc6) => /usr/local/lib/libQt4Pas.so.5", but no "libQt4Pas.so (libc6) => /usr/local/lib/libQt4Pas.so".

[JuhaManninen]

I just get "libQt4Pas.so.5 (libc6) => /usr/local/lib/libQt4Pas.so.5", but no "libQt4Pas.so (libc6) => /usr/local/lib/libQt4Pas.so".

It doesn't find "libQt4Pas.so".
You can make a symlink for it using ln -s ...
You could also copy all files and symlinks again from the Qt4Pas library package.
And, make sure you don't have other versions of the files in /usr/lib or somewhere.

Juha

[Soaliar]

I just get "libQt4Pas.so.5 (libc6) => /usr/local/lib/libQt4Pas.so.5", but no "libQt4Pas.so (libc6) => /usr/local/lib/libQt4Pas.so".

It doesn't find "libQt4Pas.so".
You can make a symlink for it using ln -s ...
You could also copy all files and symlinks again from the Qt4Pas library package.
And, make sure you don't have other versions of the files in /usr/lib or somewhere.

Juha

Thanks, it worked. It's weird because I already got that symlink, but I removed it and created it again.