Ubuntu下使用gcc编译c文件,虽然我调用了math.h的头文件,但是未识别cos,sin 报错:( fft.c ) /tmp/ccwXjD8C.o: In function `fft': fft.c:(.text+0x17a): undefined reference to `cos' fft.c:(.text+0x188): undefined reference to `sin' 原因: 一般出现这个问题说明,在编译时已经正确找到头文件math.h,但在链接时因为没有合适的编译选项来包
arch/x86/kernel/ptrace.c:1472:17: error: conflicting types for 'syscall_trace_enter' In file included from /home/rex/Downloads/linux-2.6.32.60/arch/x86/include/asm/vm86.h:130:0, from /home/rex/Downloads/linux-2.6.32.60/arch/x86/in