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Cannot Load Library Undefined Symbol Qt

You should not add a non-virtual method to an interface. If I inherit ExampleApp directly from pkApplication everything works (obviously with some changes here and there). Select 2D data in a certain range Where do I drop off a foot passenger in Calais (P&O)? Your solution. his comment is here

If ExampleApp inherits directly from pkApplication the situation is similar to EchoPlugin example in the Qt documentation, isn't it? :confused: Maybe "expected" wasn't the right word... "intuitive" would have been a For now I commented out all Qt widget_ and ui_ to just build. Should I allow my child to make an alternate meal if they do not like anything served at mealtime? Show Erik Verbruggen added a comment - 08/Mar/10 10:04 AM In a couple of changes last week, we removed the dependency of the Qml/JS TEXT editor on private headers.

In fact, I had no "-E" flag in the CMakeCache.txt so I added one at the ad hoc place. Can you post a self-compilable example that reproduces the error? I am trying to create a modular application with QtPlugin. I've implemented the TimerInterface and tried loading the plugin but I get the error message.

c++ qt share|improve this question asked Jul 17 '15 at 16:05 pavel.lazar 452512 add a comment| 1 Answer 1 active oldest votes up vote 1 down vote accepted It looks like errorString returns exactly the same string, I have just obfuscated the path, the exact value is : Cannot load library /home/bambou/build-TestPlugin-Desktop-Debug/plugin/libplug_text.so: (/home/bambou/build-TestPlugin-Desktop-Debug/plugin/libplug_text.so: undefined symbol: _ZN7iPlugin16staticMetaObjectE) on November 2, 2014. Besides, using QLibrary implies recreating what QPluginLoader provides (you cannot create objects directly from shared libs, you have to export a "creator" functions which must have a name known to the Activity Ascending order - Click to sort in descending order All Comments Work Log History Activity Transitions Hide Permalink Kai Köhne added a comment - 27/Feb/10 9:04 AM These kind of

The QmlPropertyAnimation isn't properly exported which will cause problems on Windows. The method instantiate returns a null pointer and the error string is : Cannot load library *library* : (*library*: undefined symbol: _ZN7iPlugin16staticMetaObjectE) Here is the interface iPlugin.h : #ifndef IPLUGIN_H #define Can clients learn their time zone on a network configured using RA? Homepage Browse other questions tagged qt plugins or ask your own question.

What now? Also will try to add missing C++ UI writeup edit flag offensive delete link more Comments1Can you expand on why you feel it is incomplete. Of course the runtime will complain because it needs to read the "property" directly. There is an issue with your design I think.

So obviously there is a problem with my read method. The application itself is loading the library at link time (I have a LIBS += ....). Target: i386--netbsdelf Configured with: /usr/src/tools/gcc/../../gnu/dist/gcc4/configure --enable-long-long --disable-multilib --enable-threads --disable-symvers --build=x86_64-unknown-netbsd4.99.52 --host=i386--netbsdelf --target=i386--netbsdelf --enable-__cxa_atexit Thread model: posix gcc version 4.1.3 20080202 prerelease (NetBSD nb1 20080202) This is the "standard" gcc as distributed asked 2 years ago viewed 448 times active 2 years ago Upcoming Events 2016 Community Moderator Election ends Nov 22 Related 2Check for dependency of a Qt plugin at runtime9Is it

zuck20th March 2009, 16:44So the correct procedure is: 1) Put pkApplication and pkApplicationBase in a shared lib. 2) Link ExampleApp and pkServer modules to the shared lib. ...Right? http://culturahq.com/cannot-load/cannot-load-library-reloc-library-1316.html Teenage daughter refusing to go to school Total distance traveled when visiting all rational numbers addFieldToFilter() And Condition in magento2 Did a thief think he could conceal his identity from security SET_TARGET_PROPERTIES(scribus PROPERTIES LINK_FLAGS -Wl,-E) ENDIF (GCC AND NOT WIN32) That'll break if people are using gcc with a non-GNU linker that doesn't understand -E , but I'm not sure that'll be it is recommended to avoid that as much as possible.

A guy scammed me, but he gave me a bank account number & routing number. Removing all mention of Base fixes the problem, but the instances need to be derived from that class, so I don't think that will work. Any idea if CMake has a built-in variable for linker type like the (GCC) and (MSVC) compiler-type variables? ~0019405 vince (reporter) 2008-04-07 11:00 I am also a bit surprised that this weblink Not because it is my solution :), but because you'd need to take care of one library less.

I'd rather not commit it since I'm not at a Linux box right now. ~0019750 cbradney (administrator) 2008-05-27 22:09 Can you please test with rev 12176 of 135svn? more hot questions question feed lang-cpp about us tour help blog chat data legal privacy policy work here advertising info mobile contact us feedback Technology Life / Arts Culture / Recreation more stack exchange communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed

updated 2016-04-20 17:39:05 -0600 I had this error then found that my qt4_wrap_cpp() was wrapping my cpp file, and not the header, fixed it and the plugin loaded properly.

What movie is this? Join them; it only takes a minute: Sign up Qt Dynamic Plugin Fails to Load, Undefined Symbol up vote 0 down vote favorite I have a project where I'm trying to What linker and version are you using? (GNU ld or something else?) ~0019388 vince (reporter) 2008-04-06 20:25 Hello ! At runtime the symbol is not there, which is why you have your error.

I'm a bit lost as to how the symbol could be undefined. For those who will have this problem : I had an INCLUDEDIR line in my plugin's .pro file, I have removed it and now, the plugin works well. Why do the cars die after removing jumper cables Did a thief think he could conceal his identity from security cameras by putting lemon juice on his face? http://culturahq.com/cannot-load/cannot-load-library-reloc-library-1453.html Each plugin should inherits from pkApplication interface.

Not the answer you're looking for? I want to write a singleton pattern (and also later Factory pattern) and able to access from loadded plugins. Reply Quote 0 CKurdu last edited by Sağolasın :) Reply Quote 0 Loading More Posts 9 Posts 813 Views Reply Reply as topic Log in to reply 1 / 1 DashboardsProjectsIssuesAgile How can I do that?

Can I use that to take out what he owes me? fullmetalcoder20th March 2009, 00:54using QLibrary instead of QPluginLoader offers a single avantage : more control. Why are password boxes always blanked out when other sensitive data isn't? Then I suppose my previous comment was accurate : QPluginLoader tries to cast the object to pkApplication using qobject_cast<> but as pkApplicationBase does not have the Q_INTERFACE macro this fails (qobject_cast

I want to implement a dynamic loader for third-party applications, so I'm using the Qt plugin system. If I inherit ExampleApp directly from pkApplication everything works (obviously with some changes here and there). I'm using QPluginLoader to load the plugin. Should I allow my child to make an alternate meal if they do not like anything served at mealtime?

Either way, this is likely a C++ problem. directory structure main_project +- main_project.pro +- app/ | +- app.pro | +- main.cpp | +- factoryinterface.h | +- base.h | +- base.cpp | +- counter/ +- counter.pro +- counter.h +- counterfactory.cpp errorString returns exactly the same string, I have just obfuscated the path, the exact value is : Cannot load library /home/bambou/build-TestPlugin-Desktop-Debug/plugin/libplug_t‌ext.so: (/home/bambou/build-TestPlugin-Desktop-Debug/plugin/libplug_‌text.so: undefined symbol: _ZN7iPlugin16staticMetaObjectE) –Bambou Nov 2 '14 at 8:36 The other symbol you're having issues with is part of the Qt metaobject system, and is defined by `moc'.

I am not sure how to fix this error.


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