gcc -ffunction-sections -fdata-sections -Wl,-gc-sections asd.c

#include <stdio.h>

void __attribute__((noinline)) my_function (void)
{
	printf ("Hello world\n");
}

int main()
{
	my_function();
	return 0;
}

ELF Header:
  Magic:   7f 45 4c 46 01 01 01 00 00 00 00 00 00 00 00 00
  Class:                             ELF32
  Data:                              2's complement, little endian
  Version:                           1 (current)
  OS/ABI:                            UNIX - System V
  ABI Version:                       0
  Type:                              EXEC (Executable file)
  Machine:                           Intel 80386
  Version:                           0x1
  Entry point address:               0x80482d0
  Start of program headers:          52 (bytes into file)
  Start of section headers:          4588 (bytes into file)
  Flags:                             0x0
  Size of this header:               52 (bytes)
  Size of program headers:           32 (bytes)
  Number of program headers:         8
  Size of section headers:           40 (bytes)
  Number of section headers:         28
  Section header string table index: 25

Section Headers:
  [Nr] Name              Type            Addr     Off    Size   ES Flg Lk Inf Al
  [ 0]                   NULL            00000000 000000 000000 00      0   0  0
  [ 1] .interp           PROGBITS        08048134 000134 000013 00   A  0   0  1
  [ 2] .hash             HASH            08048148 000148 000028 04   A  4   0  4
  [ 3] .gnu.hash         GNU_HASH        08048170 000170 000020 04   A  4   0  4
  [ 4] .dynsym           DYNSYM          08048190 000190 000050 10   A  5   1  4
  [ 5] .dynstr           STRTAB          080481e0 0001e0 00004a 00   A  0   0  1
  [ 6] .gnu.version      VERSYM          0804822a 00022a 00000a 02   A  4   0  2
  [ 7] .gnu.version_r    VERNEED         08048234 000234 000020 00   A  5   1  4
  [ 8] .rel.dyn          REL             08048254 000254 000008 08   A  4   0  4
  [ 9] .rel.plt          REL             0804825c 00025c 000018 08   A  4  11  4
  [10] .init             PROGBITS        08048274 000274 000017 00  AX  0   0  4
  [11] .plt              PROGBITS        0804828c 00028c 000040 04  AX  0   0  4
  [12] .text             PROGBITS        080482d0 0002d0 000168 00  AX  0   0 16
  [13] .fini             PROGBITS        08048438 000438 00001c 00  AX  0   0  4
  [14] .rodata           PROGBITS        08048454 000454 000010 00   A  0   0  4
  [15] .eh_frame         PROGBITS        08048464 000464 000004 00   A  0   0  4
  [16] .ctors            PROGBITS        08049f0c 000f0c 000008 00  WA  0   0  4
  [17] .dtors            PROGBITS        08049f14 000f14 000008 00  WA  0   0  4
  [18] .jcr              PROGBITS        08049f1c 000f1c 000004 00  WA  0   0  4
  [19] .dynamic          DYNAMIC         08049f20 000f20 0000d0 08  WA  5   0  4
  [20] .got              PROGBITS        08049ff0 000ff0 000004 04  WA  0   0  4
  [21] .got.plt          PROGBITS        08049ff4 000ff4 000018 04  WA  0   0  4
  [22] .data             PROGBITS        0804a00c 00100c 000008 00  WA  0   0  4
  [23] .bss              NOBITS          0804a014 001014 000004 00  WA  0   0  4
  [24] .comment          PROGBITS        00000000 001014 000109 00      0   0  1
  [25] .shstrtab         STRTAB          00000000 00111d 0000cd 00      0   0  1
  [26] .symtab           SYMTAB          00000000 00164c 0002f0 10     27  30  4
  [27] .strtab           STRTAB          00000000 00193c 000129 00      0   0  1
Key to Flags:
  W (write), A (alloc), X (execute), M (merge), S (strings)
  I (info), L (link order), G (group), x (unknown)
  O (extra OS processing required) o (OS specific), p (processor specific)

Program Headers:
  Type           Offset   VirtAddr   PhysAddr   FileSiz MemSiz  Flg Align
  PHDR           0x000034 0x08048034 0x08048034 0x00100 0x00100 R E 0x4
  INTERP         0x000134 0x08048134 0x08048134 0x00013 0x00013 R   0x1
      [Requesting program interpreter: /lib/ld-linux.so.2]
  LOAD           0x000000 0x08048000 0x08048000 0x00468 0x00468 R E 0x1000
  LOAD           0x000f0c 0x08049f0c 0x08049f0c 0x00108 0x0010c RW  0x1000
  DYNAMIC        0x000f20 0x08049f20 0x08049f20 0x000d0 0x000d0 RW  0x4
  GNU_STACK      0x000000 0x00000000 0x00000000 0x00000 0x00000 RW  0x4
  GNU_RELRO      0x000f0c 0x08049f0c 0x08049f0c 0x000f4 0x000f4 R   0x1
  PAX_FLAGS      0x000000 0x00000000 0x00000000 0x00000 0x00000     0x4

 Section to Segment mapping:
  Segment Sections...
   00
   01     .interp
   02     .interp .hash .gnu.hash .dynsym .dynstr .gnu.version .gnu.version_r .rel.dyn .rel.plt .init .plt .text .fini .rodata .eh_frame
   03     .ctors .dtors .jcr .dynamic .got .got.plt .data .bss
   04     .dynamic
   05
   06     .ctors .dtors .jcr .dynamic .got
   07