Hello everybody. Last weekend I was compiling the Qt to build KDE. The compilation finished without problem but to generate the local API documentation, the following error occurred: GLIBCXX_3.4.15 not found.
I’ve had compiled the GCC 4.6 as shown in Installing GCC 4.6 in the Ubuntu 10.10 and when I’ve installed it, the file “libstdc++.so.6.0.15” was not installed in “/usr/lib/”.
To solve that, copy the file from build directory (this location refer where you compiled GCC 4.6):
sudo cp gcc/build/x86_64-unknown-linux-gnu/libstdc++-v3/src/.libs/libstdc++.so.6.0.15 /usr/lib/
Now, redirect the links to point to this new one:
sudo rm libstdc++.so libstdc++.so.6
sudo ln -s libstdc++.so.6.0.15 libstdc++.so
sudo ln -s libstdc++.so.6.0.15 libstdc++.so.6
Done that, the local API documentation was generated without problem.
That’s it. See you at next time.
Buildall 
I was trying to get clang to work (which also requires 6.0.15), and while poking around I found it was installed at /usr/local/lib/libstdc++.so.6.0.15. It installed there when I installed graphite (the c++ compiler that includes parallelization optimizations). I guess I could have set the path to /usr/lib instead, but I didn’t.
If you want your tools to find the library at that location, then you’ll need to define LD_LIBRARY_PATH as:
export LD_LIBRARY_PATH=/usr/local/lib:/usr/lib
Everything works as it should now. You might take a look if you’ve also got it installed at that location too. Otherwise, maybe someone else might find the info useful.
Hi Craig.
You are right. If we changed the library location, we need to specify in LD_LIBRARY_PATH. Firstly the system searches the libraries on the paths listed in LD_LIBRARY_PATH, after in the directory /etc/ and by the last in the directories /usr/lib/ and /lib/.
In my case, I have libstdc++ installed in /usr/lib/.
Thank you for your comments and suggestion.
I run Debain and like to use the newest Updates.
Recently gcc-4.6 was installed and my Operating System broke. When I “root shell” and run aptitude I see this:
# aptitude
aptitude: /usr/local/lib/libstdc++.so.6: version `GLIBCXX_3.4.15′ not found (required by aptitude)
I tried to do the _minimum_ change so I did this:
# rm /usr/local/lib/libstdc++.so.6
Now everything works as it should – until gcc-4.6 gets re-installed.
For me also same problem,
my gcc version is 4.6.3, but when i executed in the terminal like
strings /opt/quartus/linux/libstdc++so.6 | grep GLIBC
It showed only GLIBCXX_3.4.1 to 3.4.9
where is the mistake? how to solve?
I upgraded my gcc like this
sudo apt-get upgrade gcc