Hi iwas trying to install ns-allinone-2.33 as i need this version for for my project after typing ./install i am getting this error plz help me….. ‘ Creating library file: libns.dll.a g++ -DNSLIBNAME = \”libns.dll\” -Wl, -export-dynamic -o ns common/mai-modular.cc -ldl /usr/lib/gcc/i686-pc-cygwin/3.3.3/../../../i686-pc-cygwin/bin/ld: cannot find ldl Collect2: ld returned 1 exit status Make: *** [ns] Error 1 Ns Make failed