Hi, I am using a gcc 3.0.4 MIPS crosscompiler on Redhat. I found something interesting: when I use specifly -O1 for compilation, and I can use memcpy function even I did not tell the compiler where I declard it or define it. However, when I specify -O0, then the compiler tells me undefined reference to this memcpy function. So my questions are: 1. Is memcpy a built-in function for gcc? But why not for optimization level 0? 2. Besides memcpy, is there any other functions built in too? Thanks a lot! Long __________________________________________________ Do you Yahoo!? Yahoo! Shopping - Send Flowers for Valentine's Day http://shopping.yahoo.com
