Error in compiling QT-5.0 on ubuntu linux

santhosh · wrote on 8 Jan 2013, 09:12

im using latest version i.e qt5....
in which I got some errors while installing it.

Iam new to QT so I need to develop a project using QT. And one more
thing is that I need to do it in LINUX platform .Iam totally confused
of where to write the code, where to execute the code wether in
terminal or in QT itself.
And I have one more doubt when we open a new window it shows different
options like c++ project,main source prog etc.... My doubt is that
wether the source code is enough or we need to add the c++ main source
code present in the options window.
Please help me......
I dont have any source

sierdzio · wrote on 8 Jan 2013, 09:54

[quote author="santhosh" date="1357636361"]in which I got some errors while installing it.[/quote]

How else can I phrase my request for you to understand that some errors is not enough? When you say that, I simply have no idea what went wrong on your side... so I can't help, even though I do want to.

[quote]Iam totally confused
of where to write the code, where to execute the code wether in
terminal or in QT itself.[/quote]

Yeah, that can happen in the beginning. First, you need to differentiate between Qt libraries (a set of headers, libs, code generators and tools that makes c++ cool, shiny and awesome) and Qt Creator (an IDE that makes creating Qt applications easy). For a beginner (and for most experts, too), it's probably best to start by installing Qt libs, then Qt Creator, and writing code in QtC. It's really splendid tool, I personally find it to be the best IDE ever ;)

You can write code in any text editor, and run it from terminal if you wish, though. I just would not recommend it if you are a newbie - might be a bit too hard at first.

[quote]And I have one more doubt when we open a new window it shows different
options like c++ project,main source prog etc…. My doubt is that
wether the source code is enough or we need to add the c++ main source
code present in the options window.[/quote]

Although Qt makes c++ development easier, and allows to skip some parts of the language, main() function is still needed. Without it the compiler/ linker will not know how to put the thing together, and where it should be run.

Hope this helps a bit. Ask more if you need to, but please make your questions specific.

santhosh · wrote on 28 Jan 2013, 08:07

hii everybody I'm trying to install qt in linux operating system.It is showing an error
""floating point error""...
I have one more doubt in linux by default there is a qt tool in programming tools.
can we use that tool,is that tool is same as the qt tool...
i have tried with that tool it is showing an error that "" unable to execute qmake file''

santhosh · wrote on 28 Jan 2013, 09:13

Can u provide me the complete installation steps for installing qt in linux-redhat 5.5 version

santhosh · wrote on 1 Feb 2013, 06:42

hi im trying to install qt4.8.4 version in linux(redhat5.5) os.
firstly i opened terminal,moved to the location of the qt folder.
then i entered ./configure command .
It has done with its configuration.
Then i enterd gmake command it took several hours to comlete..
after that i entered gmake install command.
i got error like this
"""user@localhost qt-everywhere-opensource-src-4.8.4]$ gmake installcd src/tools/bootstrap/ && gmake -f Makefile install
gmake[1]: Entering directory /home/user/Desktop/qt-everywhere-opensource-src-4.8.4/src/tools/bootstrap' gmake[1]: Nothing to be done for install'.
gmake[1]: Leaving directory /home/user/Desktop/qt-everywhere-opensource-src-4.8.4/src/tools/bootstrap' cd src/tools/moc/ && gmake -f Makefile install gmake[1]: Entering directory /home/user/Desktop/qt-everywhere-opensource-src-4.8.4/src/tools/moc'
mkdir: cannot create directory /usr/local/Trolltech': Permission denied gmake[1]: *** [install_target] Error 1 gmake[1]: Leaving directory /home/user/Desktop/qt-everywhere-opensource-src-4.8.4/src/tools/moc'
gmake: *** [sub-moc-install_subtargets-ordered] Error 2"""

One more thing is that when i tried to install qt-creator it is giving an error like this
""[user@localhost Desktop]$ t-creator-linux-x86-opensource-2.6.1.bin
bash: t-creator-linux-x86-opensource-2.6.1.bin: command not found
[user@localhost Desktop]$ chmod u+x qt-creator-linux-x86-opensource-2.6.1.bin
[user@localhost Desktop]$ ./qt-creator-linux-x86-opensource-2.6.1.bin
./qt-creator-linux-x86-opensource-2.6.1.bin: /usr/lib/libstdc++.so.6: version GLIBCXX_3.4.9' not found (required by ./qt-creator-linux-x86-opensource-2.6.1.bin) ./qt-creator-linux-x86-opensource-2.6.1.bin: /usr/lib/libstdc++.so.6: version GLIBCXX_3.4.11' not found (required by ./qt-creator-linux-x86-opensource-2.6.1.bin)
./qt-creator-linux-x86-opensource-2.6.1.bin: /lib/libc.so.6: version GLIBC_2.9' not found (required by ./qt-creator-linux-x86-opensource-2.6.1.bin) ./qt-creator-linux-x86-opensource-2.6.1.bin: /lib/libc.so.6: version GLIBC_2.10' not found (required by ./qt-creator-linux-x86-opensource-2.6.1.bin)
./qt-creator-linux-x86-opensource-2.6.1.bin: /lib/libc.so.6: version GLIBC_2.11' not found (required by ./qt-creator-linux-x86-opensource-2.6.1.bin) ./qt-creator-linux-x86-opensource-2.6.1.bin: /lib/libc.so.6: version GLIBC_2.7' not found (required by ./qt-creator-linux-x86-opensource-2.6.1.bin)""\

so please help me...
rectify my problem...

sierdzio · wrote on 1 Feb 2013, 07:08

Qt installs to root directories, you need to run it with sudo:
@
sudo make install
@

As for QtC - either provide that library version, or compile QtC yourself.

santhosh · wrote on 1 Feb 2013, 10:36

when i install QT ".run" file in linux it is showing this error

""[user@localhost Desktop]$ ./qt-linux-opensource-5.0.1-x86-offline.run
./qt-linux-opensource-5.0.1-x86-offline.run: /usr/lib/libstdc++.so.6: version GLIBCXX_3.4.9' not found (required by ./qt-linux-opensource-5.0.1-x86-offline.run) ./qt-linux-opensource-5.0.1-x86-offline.run: /usr/lib/libstdc++.so.6: version GLIBCXX_3.4.11' not found (required by ./qt-linux-opensource-5.0.1-x86-offline.run)
./qt-linux-opensource-5.0.1-x86-offline.run: /usr/lib/libstdc++.so.6: version GLIBCXX_3.4.15' not found (required by ./qt-linux-opensource-5.0.1-x86-offline.run) ./qt-linux-opensource-5.0.1-x86-offline.run: /lib/libc.so.6: version GLIBC_2.9' not found (required by ./qt-linux-opensource-5.0.1-x86-offline.run)
./qt-linux-opensource-5.0.1-x86-offline.run: /lib/libc.so.6: version GLIBC_2.10' not found (required by ./qt-linux-opensource-5.0.1-x86-offline.run) ./qt-linux-opensource-5.0.1-x86-offline.run: /lib/libc.so.6: version GLIBC_2.11' not found (required by ./qt-linux-opensource-5.0.1-x86-offline.run)
./qt-linux-opensource-5.0.1-x86-offline.run: /lib/libc.so.6: version `GLIBC_2.7' not found (required by ./qt-linux-opensource-5.0.1-x86-offline.run)
what is this error???
Please rectify my problem

sierdzio · wrote on 1 Feb 2013, 10:44

Precompiled package is compiled on Ubuntu. There might be library naming clashes. Compile the stuff yourself or symlink the libraries to cheat the package.

santhosh · wrote on 8 Mar 2013, 09:22

Hi everybody I got some errors while installing qt4.7.0 version in redhat linux 5.5 version...
Firstly i have copied all the files into a folder and moved to that folder using terminal.
Over their I gave a command "./configure"
Then all the configuration files are executed.
Then after I gave "gmake" command
It gave a error like this:
[user@localhost qt-everywhere-opensource-src-4.7.0]$ gmake
cd src/tools/bootstrap/ && /home/user/Desktop/qt\ installation/qt-everywhere-opensource-src-4.7.0/qt-everywhere-opensource-src-4.7.0/bin/qmake /home/user/Desktop/qt installation/qt-everywhere-opensource-src-4.7.0/qt-everywhere-opensource-src-4.7.0/src/tools/bootstrap/bootstrap.pro -spec ../../../mkspecs/linux-g++ -o Makefile
Cannot find file: /home/user/Desktop/qt.
Cannot find file: installation/qt-everywhere-opensource-src-4.7.0/qt-everywhere-opensource-src-4.7.0/src/tools/bootstrap/bootstrap.pro.
gmake: *** [src/tools/bootstrap/Makefile] Error 2

When I give ""gmake install "" command
It gave errors like this

[user@localhost qt-everywhere-opensource-src-4.7.0]$ gmake install
cd src/tools/bootstrap/ && /home/user/Desktop/qt\ installation/qt-everywhere-opensource-src-4.7.0/qt-everywhere-opensource-src-4.7.0/bin/qmake /home/user/Desktop/qt installation/qt-everywhere-opensource-src-4.7.0/qt-everywhere-opensource-src-4.7.0/src/tools/bootstrap/bootstrap.pro -spec ../../../mkspecs/linux-g++ -o Makefile
Cannot find file: /home/user/Desktop/qt.
Cannot find file: installation/qt-everywhere-opensource-src-4.7.0/qt-everywhere-opensource-src-4.7.0/src/tools/bootstrap/bootstrap.pro.
gmake: *** [src/tools/bootstrap/Makefile] Error 2

Please rectify my problem as soon as possible...

sierdzio · wrote on 8 Mar 2013, 09:28

Which package have you downloaded?

santhosh · wrote on 8 Mar 2013, 09:34

qt‐everywhere‐opensource‐src‐4.7.0

sierdzio · wrote on 8 Mar 2013, 09:35

Tarball or zip?

santhosh · wrote on 8 Mar 2013, 09:40

actually it was tarball but it was unable to unzip those file in linux so i have unzipped those files in windows and copied back into linux and installed

sierdzio · wrote on 8 Mar 2013, 09:42

Either a broken download or some nasty Windows conversion bug, it would seem.

This should extract the archive. If it fails, check the checksums, maybe your download is bad:
@
tar -xaf qt‐everywhere‐opensource‐src‐4.7.0.tar.gz
@

santhosh · wrote on 8 Mar 2013, 09:45

ya i have tried this but it is saying that ""permission denined""....
Then i have changed the permissions using chmod command....
After this some unzip process went on and i didnt find the extracted file and it is saying that
""nothing is changed""

santhosh · wrote on 8 Mar 2013, 09:49

qt creator was installed successfully but there was some problem with gmake

sierdzio · wrote on 8 Mar 2013, 09:50

it extracts to a directory named the same as the tarball.

santhosh · wrote on 8 Mar 2013, 09:50

Will be their any problem with Operating System

santhosh · wrote on 8 Mar 2013, 09:51

I didnt find any such file or folder

sierdzio · wrote on 8 Mar 2013, 09:51

I don't think so. RedHat is a big distro, I've never heard people having trouble running Qt there.