View Full Version : [ubuntu] libdl.so not found

July 6th, 2012, 09:48 AM
I am using a Ubuntu Amazon EC2 cloud instance and cannot build anything on it because libdl.so is missing.

g++ -g -O2 -o .libs/DllPlugInTester DllPlugInTester.o CommandLineParser.o -ldl ../../src/cppunit/.libs/libcppunit.so -lm -Wl,--rpath -Wl,/home/ubuntu/cppunit/lib
../../src/cppunit/.libs/libcppunit.so: undefined reference to `dlsym'
../../src/cppunit/.libs/libcppunit.so: undefined reference to `dlopen'
../../src/cppunit/.libs/libcppunit.so: undefined reference to `dlclose'

ubuntu@ip-10-196-63-1:~/junit/source$ whereis libdl

And I have libc6 installed

ubuntu@ip-10-196-63-1:~/junit/source$ sudo apt-get install libc6
Reading package lists... Done
Building dependency tree
Reading state information... Done
libc6 is already the newest version.
0 upgraded, 0 newly installed, 0 to remove and 2 not upgraded.

I'm more of a Fedora/Red Hat guy so this is quite confusing - why isn't there /lib(32|64)/libdl.so available?

What do I need to install to start compiling?

This is what I installed as a start on the instance:

sudo apt-get install python python3 subversion openjdk-7-jdk wget tar unzip gcc g++

July 6th, 2012, 10:12 AM
you may have to install the ia32 libs also if your building in a 64 bit environment.