Same problem my friend.. unless I add ldl I get:
/usr/bin/ld: cgminer-adl.o: undefined reference to symbol 'dlopen@@GLIBC_2.1'
/usr/bin/ld: note: 'dlopen@@GLIBC_2.1' is defined in DSO /lib/libdl.so.2 so try adding it to the linker command line
/lib/libdl.so.2: could not read symbols: Invalid operation
collect2: ld returned 1 exit status
make[2]: *** [cgminer] Error 1
make[2]: Leaving directory `/RAM/new/cgminer'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/RAM/new/cgminer'
make: *** [all] Error 2
If you're pulling from git, make sure you re-run autogen.sh or you won't see his change for this.