Mohsen Pahlevanzadeh <mohsen@xxxxxxxxxxxxxxxxx> writes: > I used g++ instead gcc -x c++. When i use -llibstdc++ at the end of link > line , i receive following lines: > /usr/bin/ld: cannot find -llibstdc++ It's -lstdc++. But you don't need to specify it when using g++. This error is hiding the other errors--that is, because this error occurs, the linker is not reporting the errors which appear when you omit that option. > urldump.o: In function `flushing(void*)': > urldump.c:(.text+0xce): undefined reference to `flush_to_db(int)' This function is not defined anywhere in your program. It's certainly not defined in libstdc++. You may simple require some extern "C" declarations, there is no way for us to know. Ian
