GCC 裡面的一些命令

記錄一下常用GCC 相關的命令和參數

 ldd ---> print share library dependenciy

 LD_LIBRARY_PATH---> environment variable, it will search the path accord to this variable.

                                    Also check the ldd to verify this environmental variable

ldconfig-----> configure  dynamic linker run-time bind.

                     it will create a symbol link to the share library, and save it in the catch file. So it can accelarte the speed to find the speed. /etc/ld.so.cache

ld.so----------> dynamic linker or loader

                         It will load the share library.

nm----->  list the symbols from object file / share library/ static library

as ------> the portal GNU assembley

ld ------------>  then GNU linker

gcc ------> GNU project c and c++ compiler and is the shell of as and ld.

readlink---> dispaly value of a symbol link

                   read value of  a symbol link

check the soname

readelf  -d  sharelibrary