How to set the output cpusubtype when using gobjcopy?

I use the below command to generate an object file, but the corresponding "cpusubtype" is incompatible with the current system, what I suppose to have is "0x3", but the actual what I have is "0x80000003", how do I resolve this problem?

gobjcopy -I binary -O mach-o-x86-64  -B i386:x86-64 test test.o

What I suppose to have:

cpusubtype: 0x3 (X86_ALL)

Actually what I get:

cpusubtype: 0x80000003 (LIB64) (X86_ALL)

BTW. What I found that the extra 0x80000000 seems is a kind of capability bit.

I still do not have any idea on how to fix this.

/*
 * Capability bits used in the definition of cpu_subtype.
 */
#define CPU_SUBTYPE_MASK        0xff000000      /* mask for feature flags */
#define CPU_SUBTYPE_LIB64       0x80000000      /* 64 bit libraries */