Some modules .so are stripped while others are not

Hi there, I wonder why some modules are stripped of their text symbols, others are not. For example    >nm -D /opt/rad/lib/rlm_rest.so | grep -i " T " gives the expected list for -g cflag.   >nm -D /opt/cpr/lib/rlm_realm.so | grep -i " T " doesn't show anything, even when using ./configure --enable-developer How is this configured? I couldn't find the "magic"... Thanks in advance Till