Hi,

I installed Cantor from openSUSE kde 4.7 repo, and that version crashed everytime I tried to open a cantor file that I saved. (I think it is https://bugs.kde.org/show_bug.cgi?id=258286)

So I cloned the git repo and build cantor. This time, if I run it it just says No Backend Found.

What can I do to fix this?

Thank you!
Joon

did you remember to run kbuildsycoca4 after building cantor?

arieder wrote:did you remember to run kbuildsycoca4 after building cantor?

I was not aware of such thing. I just did that after $ sudo make install, but I've got the same No Backend Found:

joon@linux-64fk:~> cantor
cantor(20544) KXMLGUIClient::setXMLFile: cannot find .rc file "cantor_shell.rc" for component "cantor"
cantor(20544) KXMLGUIClient::setXMLFile: cannot find .rc file "cantor_shell.rc" for component "cantor"
cantor(20544)/kdeui (KMainWindow) KMainWindow::applyMainWindowSettings: KMainWindow::applyMainWindowSettings "MainWindow"
cantor(20544)/kdecore (KSycoca) KSycocaPrivate::openDatabase: Trying to open ksycoca from "/var/tmp/kdecache-joon/ksycoca4"
cantor(20544)/kdecore (trader) KServiceTypeTrader::defaultOffers: KServiceTypeTrader: serviceType "Cantor/Backend" not found
cantor(20544)/kdecore (trader) KServiceTypeTrader::defaultOffers: KServiceTypeTrader: serviceType "Cantor/Backend" not found
cantor(20544)/kdecore (KLocale) KuitSemanticsPrivate::semanticToVisualText: "Markup error in message {<kuil><h1>No Backend Found</h1>
<div>You could try:
<ul> <li>Changing the s...}: Opening and ending tag mismatch.. Last tag parsed: ul"
Object::disconnect: Unexpected null parameter

it looks like there is something seriously wrong with your installation. Did you install it into some weird prefix? maybe adding the prefix path to the KDEDIRS environment variable might help

arieder wrote:it looks like there is something seriously wrong with your installation. Did you install it into some weird prefix? maybe adding the prefix path to the KDEDIRS environment variable might help

I just followed the instructions in the README.txt file:

$ cd <project_name_path>
$ mkdir build
$ cd build
$ cmake -DCMAKE_INSTALL_PREFIX=$KDEDIRS -DCMAKE_BUILD_TYPE=debugfull ..
$ make
$ sudo make install

Please try running (as your normal user):

Code: Select all

kbuildsycoca4 --noincremental

bcooksley wrote:Please try running (as your normal user):

Code: Select all

kbuildsycoca4 --noincremental

I just did kbuildsycoca4 --noincremental and then ran cantor, but I still got:

Code: Select all

$ cantor
cantor(30005) KXMLGUIClient::setXMLFile: cannot find .rc file "cantor_shell.rc" for component "cantor"
cantor(30005) KXMLGUIClient::setXMLFile: cannot find .rc file "cantor_shell.rc" for component "cantor"
cantor(30005)/kdeui (KMainWindow) KMainWindow::applyMainWindowSettings: KMainWindow::applyMainWindowSettings  "MainWindow"
cantor(30005)/kdecore (KSycoca) KSycocaPrivate::openDatabase: Trying to open ksycoca from "/var/tmp/kdecache-joon/ksycoca4"
cantor(30005)/kdecore (trader) KServiceTypeTrader::defaultOffers: KServiceTypeTrader: serviceType  "Cantor/Backend"  not found
cantor(30005)/kdecore (trader) KServiceTypeTrader::defaultOffers: KServiceTypeTrader: serviceType  "Cantor/Backend"  not found
cantor(30005)/kdecore (KLocale) KuitSemanticsPrivate::semanticToVisualText: "Markup error in message {<kuil><h1>No Backend Found</h1>
<div>You could try:
  <ul>    <li>Changing the s...}: Opening and ending tag mismatch.. Last tag parsed: ul"
Object::disconnect: Unexpected null parameter

Is there a specific place where I'm supposed to run this? (Right after build, before sudo make install ... ?)

Thank you!
Joon

Where did you install the version of Cantor you self-compiled? This path, if not /usr will need to be added to several environment variables to be properly detected by KDE.

bcooksley wrote:Where did you install the version of Cantor you self-compiled? This path, if not /usr will need to be added to several environment variables to be properly detected by KDE.

Oh .. I haven't noticed that. I just uninstalled it and they were installed at / instead of /usr. Let me try to re-install. Thanks.

Awesome!

$ cmake -DCMAKE_INSTALL_PREFIX=/usr -DCMAKE_BUILD_TYPE=debugfull ..

made everything well. Thank you very much!

-Joon