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From: Patrick DELAUNAY <patrick.delaunay@foss.st.com>
To: U-Boot Mailing List <u-boot@lists.denx.de>
Cc: "Tom Rini" <trini@konsulko.com>,
	"Marek Behún" <marek.behun@nic.cz>,
	"Simon Glass" <sjg@chromium.org>,
	"Patrice CHOTARD" <patrice.chotard@foss.st.com>,
	"Marek Vasut" <marex@denx.de>,
	"U-Boot STM32" <uboot-stm32@st-md-mailman.stormreply.com>
Subject: Question: LTO and failing objcopy in "u-boot-initial-env" target
Date: Fri, 22 Oct 2021 17:16:18 +0200	[thread overview]
Message-ID: <927b122e-1f62-e790-f5ca-30bae4332c77@foss.st.com> (raw)

Hi,


I made tests with LTO option activated on stm32mp15 boards but if have a 
issue

with the U-Boot target  "u-boot-initial-env" (this command used by YOCTO)


$> make u-boot-initial-env

...

GENENV  u-boot-initial-env
arm-none-linux-gnueabihf-objcopy: env/common.o: can't dump section 
'.rodata.default_environment' - it does not exist: file format not 
recognized
sed: can't read u-boot-initial-env: No such file or directory
make[1]: *** [/local/home/frq07632/views/u-boot/Makefile:2315: 
u-boot-initial-env] Error 2
make[1]: Leaving directory 
'/local/home/frq07632/views/build/stm32mp15_defconfig'
make: *** [Makefile:177: sub-make] Error 2


But I reproduced it with sandbox:

$> make sandbox_defconfig

$> make all

$> make u-boot-initial-env

....

   LTO     u-boot
   OBJCOPY u-boot-nodtb.bin
   COPY    u-boot.bin
   GENENV  u-boot-initial-env
objcopy: env/common.o: can't dump section '.rodata.default_environment' 
- it does not exist: file format not recognized
sed: can't read u-boot-initial-env: No such file or directory
make: *** [Makefile:2315: u-boot-initial-env] Error 2



Do you already know this issue for other board which activate the LTO 
feature ?

I don't see any remarks about this issue on mailing list.

Today I am known how to solve this issue.


PS: The same command is executed in "scripts/get_default_envs.sh"


Regards

Patrick



I am ussing gcc 10.2

gcc version 10.2.1 20201103 (GNU Toolchain for the A-profile 
Architecture 10.2-2020.11 (arm-10.16))


And the name of the section change with LTO: .gnu.lto_default_environment.*

for exmaple:


$> arm-none-linux-gnueabihf-objdump -x -g -S common.o

common.o:     file format elf32-littlearm
common.o
architecture: armv7, flags 0x00000011:
HAS_RELOC, HAS_SYMS
start address 0x00000000
private flags = 5000000: [Version5 EABI]

Sections:
Idx Name          Size      VMA       LMA       File off  Algn
   0 .text         00000000  00000000  00000000  00000034  2**0
                   CONTENTS, ALLOC, LOAD, READONLY, CODE
   1 .data         00000000  00000000  00000000  00000034  2**0
                   CONTENTS, ALLOC, LOAD, DATA
   2 .bss          00000000  00000000  00000000  00000034  2**0
                   ALLOC
   3 .gnu.debuglto_.debug_info 000010a5  00000000  00000000 00000034  2**0
                   CONTENTS, RELOC, READONLY, EXCLUDE
   4 .gnu.debuglto_.debug_abbrev 000002a1  00000000  00000000 000010d9  2**0
                   CONTENTS, READONLY, EXCLUDE
   5 .gnu.debuglto_.debug_line 00000214  00000000  00000000 0000137a  2**0
                   CONTENTS, READONLY, EXCLUDE
   6 .gnu.debuglto_.debug_str 000012e3  00000000  00000000 0000158e  2**0
                   CONTENTS, READONLY, EXCLUDE
   7 .gnu.lto_.profile.69d69ac49136740e 0000000b  00000000 00000000  
00002871  2**0
                   CONTENTS, READONLY, EXCLUDE
   8 .gnu.lto_.icf.69d69ac49136740e 0000007b  00000000  00000000 
0000287c  2**0
                   CONTENTS, READONLY, EXCLUDE
   9 .gnu.lto_.ipa_sra.69d69ac49136740e 0000008c  00000000 00000000  
000028f7  2**0
                   CONTENTS, READONLY, EXCLUDE
  10 .gnu.lto_.inline.69d69ac49136740e 000002bc  00000000 00000000  
00002983  2**0
                   CONTENTS, READONLY, EXCLUDE
  11 .gnu.lto_.jmpfuncs.69d69ac49136740e 0000031c  00000000 00000000  
00002c3f  2**0
                   CONTENTS, READONLY, EXCLUDE
  12 .gnu.lto_.pureconst.69d69ac49136740e 0000002f  00000000 00000000  
00002f5b  2**0
                   CONTENTS, READONLY, EXCLUDE
  13 .gnu.lto_.lto.69d69ac49136740e 00000008  00000000  00000000 
00002f8a  2**0
                   CONTENTS, READONLY, EXCLUDE
  14 .gnu.lto_default_environment.154.69d69ac49136740e 00000507 
00000000  00000000  00002f92  2**0
                   CONTENTS, READONLY, EXCLUDE
  15 .gnu.lto_env_htab.155.69d69ac49136740e 00000062  00000000 00000000  
00003499  2**0
                   CONTENTS, READONLY, EXCLUDE
  16 .gnu.lto_env_get_yesno.156.69d69ac49136740e 00000244 00000000  
00000000  000034fb  2**0
                   CONTENTS, READONLY, EXCLUDE
  17 .gnu.lto_env_get_default.157.69d69ac49136740e 000003dc 00000000  
00000000  0000373f  2**0
                   CONTENTS, READONLY, EXCLUDE
  18 .gnu.lto_env_set_default.158.69d69ac49136740e 000004bf 00000000  
00000000  00003b1b  2**0
                   CONTENTS, READONLY, EXCLUDE
  19 .gnu.lto_env_set_default_vars.159.69d69ac49136740e 000001c1 
00000000  00000000  00003fda  2**0
                   CONTENTS, READONLY, EXCLUDE
  20 .gnu.lto_env_import.160.69d69ac49136740e 00000582  00000000 
00000000  0000419b  2**0
                   CONTENTS, READONLY, EXCLUDE
  21 .gnu.lto_env_check_redund.162.69d69ac49136740e 0000088a 00000000  
00000000  0000471d  2**0
                   CONTENTS, READONLY, EXCLUDE
  22 .gnu.lto_env_import_redund.163.69d69ac49136740e 00000461 00000000  
00000000  00004fa7  2**0
                   CONTENTS, READONLY, EXCLUDE
  23 .gnu.lto_env_export.164.69d69ac49136740e 000003a0  00000000 
00000000  00005408  2**0
                   CONTENTS, READONLY, EXCLUDE
  24 .gnu.lto_env_relocate.165.69d69ac49136740e 00000231  00000000 
00000000  000057a8  2**0
                   CONTENTS, READONLY, EXCLUDE
  25 .gnu.lto_env_complete.166.69d69ac49136740e 00000880  00000000 
00000000  000059d9  2**0
                   CONTENTS, READONLY, EXCLUDE
  26 .gnu.lto_env_relocate.part.0.203.69d69ac49136740e 000001ab 
00000000  00000000  00006259  2**0
                   CONTENTS, READONLY, EXCLUDE
  27 .gnu.lto_.symbol_nodes.69d69ac49136740e 000001f2  00000000 
00000000  00006404  2**0
                   CONTENTS, READONLY, EXCLUDE
  28 .gnu.lto_.refs.69d69ac49136740e 0000004f  00000000  00000000 
000065f6  2**0
                   CONTENTS, READONLY, EXCLUDE
  29 .gnu.lto_.decls.69d69ac49136740e 00001fbf  00000000  00000000 
00006645  2**0
                   CONTENTS, READONLY, EXCLUDE
  30 .gnu.lto_.symtab.69d69ac49136740e 000002de  00000000 00000000  
00008604  2**0
                   CONTENTS, READONLY, EXCLUDE
  31 .gnu.lto_.ext_symtab.69d69ac49136740e 00000039  00000000 00000000  
000088e2  2**0
                   CONTENTS, READONLY, EXCLUDE
  32 .gnu.lto_.opts 000001d6  00000000  00000000  0000891b  2**0
                   CONTENTS, READONLY, EXCLUDE
  33 .comment      0000005e  00000000  00000000  00008af1  2**0
                   CONTENTS, READONLY
  34 .note.GNU-stack 00000000  00000000  00000000  00008b4f  2**0
                   CONTENTS, READONLY
  35 .ARM.attributes 00000031  00000000  00000000  00008b4f  2**0
                   CONTENTS, READONLY
SYMBOL TABLE:
00000000 l    df *ABS*    00000000 common.c
00000000 l    d  .text    00000000 .text
00000000 l    d  .data    00000000 .data
00000000 l    d  .bss    00000000 .bss
00000000 l    d  .gnu.debuglto_.debug_info    00000000 
.gnu.debuglto_.debug_info
00000000 l    d  .gnu.debuglto_.debug_abbrev    00000000 
.gnu.debuglto_.debug_abbrev
00000000 l    d  .gnu.debuglto_.debug_line    00000000 
.gnu.debuglto_.debug_line
00000000 l    d  .gnu.debuglto_.debug_str    00000000 
.gnu.debuglto_.debug_str
00000000 l    d  .gnu.lto_.profile.69d69ac49136740e    00000000 
.gnu.lto_.profile.69d69ac49136740e
00000000 l    d  .gnu.lto_.icf.69d69ac49136740e    00000000 
.gnu.lto_.icf.69d69ac49136740e
00000000 l    d  .gnu.lto_.ipa_sra.69d69ac49136740e    00000000 
.gnu.lto_.ipa_sra.69d69ac49136740e
00000000 l    d  .gnu.lto_.inline.69d69ac49136740e    00000000 
.gnu.lto_.inline.69d69ac49136740e
00000000 l    d  .gnu.lto_.jmpfuncs.69d69ac49136740e    00000000 
.gnu.lto_.jmpfuncs.69d69ac49136740e
00000000 l    d  .gnu.lto_.pureconst.69d69ac49136740e    00000000 
.gnu.lto_.pureconst.69d69ac49136740e
00000000 l    d  .gnu.lto_.lto.69d69ac49136740e    00000000 
.gnu.lto_.lto.69d69ac49136740e
00000000 l    d .gnu.lto_default_environment.154.69d69ac49136740e    
00000000 .gnu.lto_default_environment.154.69d69ac49136740e
00000000 l    d  .gnu.lto_env_htab.155.69d69ac49136740e00000000 
.gnu.lto_env_htab.155.69d69ac49136740e
00000000 l    d  .gnu.lto_env_get_yesno.156.69d69ac49136740e 00000000 
.gnu.lto_env_get_yesno.156.69d69ac49136740e
00000000 l    d  .gnu.lto_env_get_default.157.69d69ac49136740e 00000000 
.gnu.lto_env_get_default.157.69d69ac49136740e
00000000 l    d  .gnu.lto_env_set_default.158.69d69ac49136740e 00000000 
.gnu.lto_env_set_default.158.69d69ac49136740e
00000000 l    d .gnu.lto_env_set_default_vars.159.69d69ac49136740e    
00000000 .gnu.lto_env_set_default_vars.159.69d69ac49136740e
00000000 l    d  .gnu.lto_env_import.160.69d69ac49136740e 00000000 
.gnu.lto_env_import.160.69d69ac49136740e
00000000 l    d  .gnu.lto_env_check_redund.162.69d69ac49136740e 00000000 
.gnu.lto_env_check_redund.162.69d69ac49136740e
00000000 l    d .gnu.lto_env_import_redund.163.69d69ac49136740e    
00000000 .gnu.lto_env_import_redund.163.69d69ac49136740e
00000000 l    d  .gnu.lto_env_export.164.69d69ac49136740e 00000000 
.gnu.lto_env_export.164.69d69ac49136740e
00000000 l    d  .gnu.lto_env_relocate.165.69d69ac49136740e 00000000 
.gnu.lto_env_relocate.165.69d69ac49136740e
00000000 l    d  .gnu.lto_env_complete.166.69d69ac49136740e 00000000 
.gnu.lto_env_complete.166.69d69ac49136740e
00000000 l    d .gnu.lto_env_relocate.part.0.203.69d69ac49136740e    
00000000 .gnu.lto_env_relocate.part.0.203.69d69ac49136740e
00000000 l    d  .gnu.lto_.symbol_nodes.69d69ac49136740e 00000000 
.gnu.lto_.symbol_nodes.69d69ac49136740e
00000000 l    d  .gnu.lto_.refs.69d69ac49136740e    00000000 
.gnu.lto_.refs.69d69ac49136740e
00000000 l    d  .gnu.lto_.decls.69d69ac49136740e    00000000 
.gnu.lto_.decls.69d69ac49136740e
00000000 l    d  .gnu.lto_.symtab.69d69ac49136740e    00000000 
.gnu.lto_.symtab.69d69ac49136740e
00000000 l    d  .gnu.lto_.ext_symtab.69d69ac49136740e    00000000 
.gnu.lto_.ext_symtab.69d69ac49136740e
00000000 l    d  .gnu.lto_.opts    00000000 .gnu.lto_.opts
00000000 l    d  .note.GNU-stack    00000000 .note.GNU-stack
00000000 l    d  .comment    00000000 .comment
00000000 l    d  .ARM.attributes    00000000 .ARM.attributes
00000000  w      .gnu.debuglto_.debug_info    00000000 .hidden 
common.c.2c9afba8
00000001       O *COM*    00000001 __gnu_lto_slim



             reply	other threads:[~2021-10-22 15:16 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-10-22 15:16 Patrick DELAUNAY [this message]
2021-10-22 19:19 ` Question: LTO and failing objcopy in "u-boot-initial-env" target Adam Ford
2021-10-22 19:26   ` Marek Behún
2021-10-22 19:49     ` Adam Ford
2021-10-23 17:25       ` Tom Rini
2021-10-22 19:25 ` Marek Behún

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