missing linkers in Qt

Question

I have downloaded this project https://github.com/owncloud/sync-qt next i did some modification to it. I have added this files https://github.com/frankosterfeld/qtkeychain and sqlite3.h because of a missing libraries

Now the problem is that i have got those issues:

• error: cannot find -lqtkeychain
• error: cannot find -lsqlite3
• error: cannot find -lkparts
• error: cannot find -lkdeui
• error: cannot find -lkdecore
• error: collect2: error: ld returned 1 exit status

My OS is Fedora 18 64bit I am using Qt Creator 2.5.0 Based on Qt 4.8.2 (64 bit)

I think this error is that i have some missing linkers !! but i don't know how to fix that ??

Answer 1

It is not the "linkers" which are missing, but some (development) libraries which are required to link the final executable (the linker takes the object files produced from your sources and all required libraries and links them together to produce the final executable file).

You need to make sure that the necessary -devel packages are installed - e.g. for the kde libraries, you need to install kdelibs4-devel. Since you have been able to compile the sources, it seems like these packages are already available on your system (they also contain the #include files, so without them compilation would already fail).

It seems that fedora stores these libraries below /usr/lib/kde4/devel/ (or /usr/lib64/kde4/devel/) - check that these files are there (e.g. /usr/lib64/kde4/devel/libkdecore.so). If not, install the respective -devel package, like

# yum install kdelibs4-devel