QApplication: No such file or directory

**graciano** · 14th June 2009, 15:46

Hi
I've been using Qt Creator for a while and almost forgot the command line (wish can be a bad thing).
Today i tried to build a simple "Hello World" and got the message that i used as title.
How to fix this:

Add another environment variable
tell the linked where to find the "include" folders
something more obvious i'm missing here

This is my printenv:

Qt Code:

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GPG_AGENT_INFO=/tmp/seahorse-B5a4Ss/S.gpg-agent:5316:1
SHELL=/bin/bash
DESKTOP_STARTUP_ID=
TERM=xterm
GTK_RC_FILES=/etc/gtk/gtkrc:/home/torrao/.gtkrc-1.2-gnome2
WINDOWID=46137421
QTDIR=/usr/local/Trolltech/Qt-4.5.0/bin
USER=torrao
LS_COLORS=no=00:fi=00:di=01;34:ln=01;36:pi=40;33:so=01;35:do=01;35:bd=40;33;01:cd=40;33;01:or=40;31;01:su=37;41:sg=30;43:tw=30;42:ow=34;42:st=37;44:ex=01;32:*.tar=01;31:*.tgz=01;31:*.svgz=01;31:*.arj=01;31:*.taz=01;31:*.lzh=01;31:*.lzma=01;31:*.zip=01;31:*.z=01;31:*.Z=01;31:*.dz=01;31:*.gz=01;31:*.bz2=01;31:*.bz=01;31:*.tbz2=01;31:*.tz=01;31:*.deb=01;31:*.rpm=01;31:*.jar=01;31:*.rar=01;31:*.ace=01;31:*.zoo=01;31:*.cpio=01;31:*.7z=01;31:*.rz=01;31:*.jpg=01;35:*.jpeg=01;35:*.gif=01;35:*.bmp=01;35:*.pbm=01;35:*.pgm=01;35:*.ppm=01;35:*.tga=01;35:*.xbm=01;35:*.xpm=01;35:*.tif=01;35:*.tiff=01;35:*.png=01;35:*.svg=01;35:*.mng=01;35:*.pcx=01;35:*.mov=01;35:*.mpg=01;35:*.mpeg=01;35:*.m2v=01;35:*.mkv=01;35:*.ogm=01;35:*.mp4=01;35:*.m4v=01;35:*.mp4v=01;35:*.vob=01;35:*.qt=01;35:*.nuv=01;35:*.wmv=01;35:*.asf=01;35:*.rm=01;35:*.rmvb=01;35:*.flc=01;35:*.avi=01;35:*.fli=01;35:*.gl=01;35:*.dl=01;35:*.xcf=01;35:*.xwd=01;35:*.yuv=01;35:*.aac=00;36:*.au=00;36:*.flac=00;36:*.mid=00;36:*.midi=00;36:*.mka=00;36:*.mp3=00;36:*.mpc=00;36:*.ogg=00;36:*.ra=00;36:*.wav=00;36:
SSH_AUTH_SOCK=/tmp/keyring-xXX0XO/ssh
GNOME_KEYRING_SOCKET=/tmp/keyring-xXX0XO/socket
SESSION_MANAGER=local/debian:/tmp/.ICE-unix/5254
USERNAME=torrao
DESKTOP_SESSION=gnome
[COLOR="black"]PATH=/usr/local/Trolltech/Qt-4.5.0/bin:/usr/local/bin:/usr/bin:/bin:/usr/games[/COLOR]
GDM_XSERVER_LOCATION=local
PWD=/home/torrao/Desktop/lixo
LANG=pt_PT.UTF-8
GNOME_KEYRING_PID=5253
GDM_LANG=pt_PT.UTF-8
GDMSESSION=gnome
HISTCONTROL=ignoreboth
HOME=/home/torrao
SHLVL=1
GNOME_DESKTOP_SESSION_ID=Default
LOGNAME=torrao
XDG_DATA_DIRS=/usr/local/share/:/usr/share/:/usr/share/gdm/
DBUS_SESSION_BUS_ADDRESS=unix:abstract=/tmp/dbus-rvYorpOyUE,guid=58c5bb41672d280d2f3706ac4a3508aa
WINDOWPATH=7
DISPLAY=:0.0
COLORTERM=gnome-terminal
XAUTHORITY=/home/torrao/.Xauthority
_=/usr/bin/printenv
OLDPWD=/home/torrao

GPG_AGENT_INFO=/tmp/seahorse-B5a4Ss/S.gpg-agent:5316:1
SHELL=/bin/bash
DESKTOP_STARTUP_ID=
TERM=xterm
GTK_RC_FILES=/etc/gtk/gtkrc:/home/torrao/.gtkrc-1.2-gnome2
WINDOWID=46137421
QTDIR=/usr/local/Trolltech/Qt-4.5.0/bin
USER=torrao
LS_COLORS=no=00:fi=00:di=01;34:ln=01;36:pi=40;33:so=01;35:do=01;35:bd=40;33;01:cd=40;33;01:or=40;31;01:su=37;41:sg=30;43:tw=30;42:ow=34;42:st=37;44:ex=01;32:*.tar=01;31:*.tgz=01;31:*.svgz=01;31:*.arj=01;31:*.taz=01;31:*.lzh=01;31:*.lzma=01;31:*.zip=01;31:*.z=01;31:*.Z=01;31:*.dz=01;31:*.gz=01;31:*.bz2=01;31:*.bz=01;31:*.tbz2=01;31:*.tz=01;31:*.deb=01;31:*.rpm=01;31:*.jar=01;31:*.rar=01;31:*.ace=01;31:*.zoo=01;31:*.cpio=01;31:*.7z=01;31:*.rz=01;31:*.jpg=01;35:*.jpeg=01;35:*.gif=01;35:*.bmp=01;35:*.pbm=01;35:*.pgm=01;35:*.ppm=01;35:*.tga=01;35:*.xbm=01;35:*.xpm=01;35:*.tif=01;35:*.tiff=01;35:*.png=01;35:*.svg=01;35:*.mng=01;35:*.pcx=01;35:*.mov=01;35:*.mpg=01;35:*.mpeg=01;35:*.m2v=01;35:*.mkv=01;35:*.ogm=01;35:*.mp4=01;35:*.m4v=01;35:*.mp4v=01;35:*.vob=01;35:*.qt=01;35:*.nuv=01;35:*.wmv=01;35:*.asf=01;35:*.rm=01;35:*.rmvb=01;35:*.flc=01;35:*.avi=01;35:*.fli=01;35:*.gl=01;35:*.dl=01;35:*.xcf=01;35:*.xwd=01;35:*.yuv=01;35:*.aac=00;36:*.au=00;36:*.flac=00;36:*.mid=00;36:*.midi=00;36:*.mka=00;36:*.mp3=00;36:*.mpc=00;36:*.ogg=00;36:*.ra=00;36:*.wav=00;36:
SSH_AUTH_SOCK=/tmp/keyring-xXX0XO/ssh
GNOME_KEYRING_SOCKET=/tmp/keyring-xXX0XO/socket
SESSION_MANAGER=local/debian:/tmp/.ICE-unix/5254
USERNAME=torrao
DESKTOP_SESSION=gnome
[COLOR="black"]PATH=/usr/local/Trolltech/Qt-4.5.0/bin:/usr/local/bin:/usr/bin:/bin:/usr/games[/COLOR]
GDM_XSERVER_LOCATION=local
PWD=/home/torrao/Desktop/lixo
LANG=pt_PT.UTF-8
GNOME_KEYRING_PID=5253
GDM_LANG=pt_PT.UTF-8
GDMSESSION=gnome
HISTCONTROL=ignoreboth
HOME=/home/torrao
SHLVL=1
GNOME_DESKTOP_SESSION_ID=Default
LOGNAME=torrao
XDG_DATA_DIRS=/usr/local/share/:/usr/share/:/usr/share/gdm/
DBUS_SESSION_BUS_ADDRESS=unix:abstract=/tmp/dbus-rvYorpOyUE,guid=58c5bb41672d280d2f3706ac4a3508aa
WINDOWPATH=7
DISPLAY=:0.0
COLORTERM=gnome-terminal
XAUTHORITY=/home/torrao/.Xauthority
_=/usr/bin/printenv
OLDPWD=/home/torrao

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I'm using Debian and i had to buil Qt with the MySql support.

Thanks

**Lykurg** · 14th June 2009, 16:27

QTDIR=/usr/local/Trolltech/Qt-4.5.0/bin

musn't that be: QTDIR=/usr/local/Trolltech/Qt-4.5.0, The base directory, not the bin dir.

**graciano** · 14th June 2009, 17:23

Humm ... i found qmake in /usr/bin( lrwxrwxrwx 1 root root 23 Abr 27 16:10 /usr/bin/qmake -> /etc/alternatives/qmake ) and /usr/local/Trolltech/Qt-4.5.0/bin

I guess i will need a fresh install to understand this.

**Lykurg** · 14th June 2009, 18:59

Originally Posted by graciano

Humm ... i found qmake in /usr/bin( lrwxrwxrwx 1 root root 23 Abr 27 16:10 /usr/bin/qmake -> /etc/alternatives/qmake ) and /usr/local/Trolltech/Qt-4.5.0/bin

That's good so, because Qt uses ($QTDIR)/bin/qmake and ($QTDIR)/include, so simple change your system variable and all should work fine!

**graciano** · 14th June 2009, 19:29

I had no idea that qmake was already in a fresh install.
This is were my confusion started.
I will try again after building Qt.

**graciano** · 14th June 2009, 23:26

uff...it's OK again.
After a fresh install and building Qt again i went back to the environment variables issue.
I edited /etc/profile and added this lines:

Qt Code:

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QTDIR="/usr/local/Trolltech/Qt-4.5.1"
export QTDIR
 
PATH=$QTDIR/bin:$PATH
export PATH

QTDIR="/usr/local/Trolltech/Qt-4.5.1"
export QTDIR

PATH=$QTDIR/bin:$PATH
export PATH

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One thing is still bothering me ...

Qt Code:

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# find -name qmake
./usr/share/qt3/bin/qmake 					( lrwxrwxrwx 1 root root 22 Jun 14 19:16 qmake -> ../../../bin/qmake-qt3 )
./usr/local/Trolltech/Qt-4.5.1/bin/qmake 			( -rwxr-xr-x 1 root staff 3917992 Jun 14 22:20 qmake )
./usr/bin/qmake							( lrwxrwxrwx 1 root root 23 Jun 14 19:16 qmake -> /etc/alternatives/qmake )
./etc/alternatives/qmake					( lrwxrwxrwx 1 root root 18 Jun 14 22:43 qmake -> /usr/bin/qmake-qt3 )
./var/lib/dpkg/alternatives/qmake				( -rw-r--r-- 1 root root 44 Jun 14 22:43 qmake
./home/torrao/qt-x11-opensource-src-4.5.1/bin/qmake		( this is the path i used to buil Qt ...)

# find -name qmake
./usr/share/qt3/bin/qmake 					( lrwxrwxrwx 1 root root 22 Jun 14 19:16 qmake -> ../../../bin/qmake-qt3 )
./usr/local/Trolltech/Qt-4.5.1/bin/qmake 			( -rwxr-xr-x 1 root staff 3917992 Jun 14 22:20 qmake )
./usr/bin/qmake							( lrwxrwxrwx 1 root root 23 Jun 14 19:16 qmake -> /etc/alternatives/qmake )
./etc/alternatives/qmake					( lrwxrwxrwx 1 root root 18 Jun 14 22:43 qmake -> /usr/bin/qmake-qt3 )
./var/lib/dpkg/alternatives/qmake				( -rw-r--r-- 1 root root 44 Jun 14 22:43 qmake
./home/torrao/qt-x11-opensource-src-4.5.1/bin/qmake		( this is the path i used to buil Qt ...)

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Got lost here trying to follow the simbolic links ... but looks like "there are no alternatives to qmake -> /usr/bin/qmake-qt3" ... at least i don't know how.

**Lykurg** · 15th June 2009, 10:35

For building Qt you don't need any settings. Just invoke the qmake of your "source-directory" only after successfully build it you must tell the application you are going to build which qmake to use. You can do it over your ~./profile, create new symbol links or simply call the qmake with the full path. That on your system are also qmake-qt3 is no problem at all. Just make sure, that a simple "qmake" in your console reaches the right qmake. (I'd preferre the ~/.profile approach.)