nmap-6.40 安装ncat错误解决

错误信息：
i386-linux-gnu/libdl.so: could not read symbols: Invalid operation
collect2: ld returned 1 exit status
------------------------
solution：
    ./configure && \
    sed -i 's/^LUA_LIBS.*/LUA_LIBS = $(top_srcdir)\/..\/liblua\/liblua.a -ldl -lm/1' ncat/Makefile \
    && make && make install 


原文：