"张翀(Zhang Chong)" <chongzhangscu@xxxxxxxxx> writes: > Hi, gcc-help, Please never send e-mail to both gcc-help@xxxxxxxxxxx and gcc@xxxxxxxxxxx. Please send any followups only to gcc-help. Thanks. > Can anyone tell me that how to generate only 64bit relocations binary > with gcc 3.3? Thanks for the help I don't understand your question. Can you give an example of what you mean. Perhaps you mean: can anybody tell you how to generate 64-bit code for the x86 using gcc 3.3. In GCC this is called x86_64, so the answer is to configure your compiler for the x86_64 target. See the installation documentation. Note that gcc 3.3 is very very old. The current version is 4.7.0. Ian