Ubuntu11.20 32位linux下编译cppunit报 libcppunit.so: undefined reference to `dlsym'错误问题

现在用cppunit，运行./configure,make报错，提示如下

g++ -g -O2 -o .libs/DllPlugInTester DllPlugInTester.o CommandLineParser.o -ldl ../../src/cppunit/.libs/libcppunit.so -lm
../../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'

找 文章解决此问题，运行

./configure LDFLAGS='-ldl'
make