Objdump: Retrieve flags

I'm actually studying the unix objdump command.

I want to retrieve the flags showed by the command "objdump -f file"

Here is an example

$>objdump -f /bin/ls

/bin/ls: file format elf64-x86-64 architecture: i386:x86-64, flags 0x00000112:

EXEC_P, HAS_SYMS, D_PAGED

start address 0x0000000000404e68

I know that I can obtain 112 by making an | on the flags that are bitmasks defined in BSD lib. The masks are:

#define BFD_NO_FLAGS 0x00

#define HAS_RELOC 0x01

#define EXEC_P 0x02

#define HAS_LINENO 0x04

#define HAS_DEBUG 0x08

#define HAS_SYMS 0x10

#define HAS_LOCALS 0x20

#define DYNAMIC 0x40

#define WP_TEXT 0x80

#define D_PAGED 0x100

Thanks to the elf struct and the e_type attribute I can obtain the HAS_RELOC flag and the EXEC_P flag.

How can I obtain the others?

Have I to retrieve 112 to get the flags or have I to retrieve the flags one by one? .