How to test if your Linux Support SSE2

Question

Actually I have 2 questions:

1. Is SSE2 Compatibility a CPU issue or Compiler issue?
2. How to check if your CPU or Compiler support SSE2?

I am u

Answer 1

use asm to check the existence of sse2

enter code here
static
bool HaveSSE2()
{
    return false;
    __asm mov EAX,1              ;
    __asm cpuid                  ;
    __asm test EDX, 4000000h     ;test whether bit 26 is set
    __asm jnz yes                ;yes
    return false;
yes:
    return true;
}