Question: LTO and failing objcopy in "u-boot-initial-env" target
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
On Fri, Oct 22, 2021 at 10:16 AM Patrick DELAUNAY patrick.delaunay@foss.st.com wrote:
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.
I ran this:
arm-linux-gnueabihf-objdump env/common.o -t |grep default_environment |awk '{print $4}'
to generate the name of the section: .gnu.lto_default_environment.188.408aacacdb8e4907
I modified the Makefile to search for default_environment, then use output of that as a parameter to $OBJCOPY, and that appears to work.
===== diff --git a/Makefile b/Makefile index 5194e4dc78..a80cf94ba1 100644 --- a/Makefile +++ b/Makefile @@ -2303,7 +2303,7 @@ endif $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
quiet_cmd_genenv = GENENV $@ -cmd_genenv = $(OBJCOPY) --dump-section .rodata.default_environment=$@ env/common.o; \ +cmd_genenv = $(OBJCOPY) --dump-section `${OBJDUMP} env/common.o -t |grep default_environment |awk '{print $$4}'`=$@ env/common.o; \ sed --in-place -e 's/\x00/\x0A/g' $@
u-boot-initial-env: u-boot.bin =====
... make -f ./scripts/Makefile.build obj=arch/arm/dts dtbs test -e arch/arm/dts/logicpd-torpedo-37xx-devkit.dtb || ( \ echo >&2; \ echo >&2 "Device Tree Source (arch/arm/dts/logicpd-torpedo-37xx-devkit.dtb) is not correctly specified."; \ echo >&2 "Please define 'CONFIG_DEFAULT_DEVICE_TREE'"; \ echo >&2 "or build with 'DEVICE_TREE=<device_tree>' argument"; \ echo >&2; \ /bin/false) cat u-boot-nodtb.bin dts/dt.dtb > u-boot-dtb.bin cp u-boot-dtb.bin u-boot.bin arm-linux-gnueabihf-objcopy --dump-section `arm-linux-gnueabihf-objdump env/common.o -t |grep default_environment |awk '{print $4}'`=u-boot-initial-env env/common.o; sed --in-place -e 's/\x00/\x0A/g' u-boot-initial-env
$ ls -l u-boot-initial-env -rw-rw-r-- 1 aford aford 1202 Oct 22 14:16 u-boot-initial-env
I am not sure it's the right solution, but it appears to work for me on a board that uses LTO. I didn't try it with a board that doesn't use LTO.
adam
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
On Fri, 22 Oct 2021 14:19:16 -0500 Adam Ford aford173@gmail.com wrote:
I am not sure it's the right solution, but it appears to work for me on a board that uses LTO. I didn't try it with a board that doesn't use LTO.
Need to be tested with GCC as well as Clang.
Marek
On Fri, Oct 22, 2021 at 2:26 PM Marek Behún marek.behun@nic.cz wrote:
On Fri, 22 Oct 2021 14:19:16 -0500 Adam Ford aford173@gmail.com wrote:
I am not sure it's the right solution, but it appears to work for me on a board that uses LTO. I didn't try it with a board that doesn't use LTO.
Need to be tested with GCC as well as Clang.
Agreed.
I turned off LTO, and got an error, so I updated the diff to:
diff --git a/Makefile b/Makefile index 5194e4dc78..386180e935 100644 --- a/Makefile +++ b/Makefile @@ -2303,7 +2303,7 @@ endif $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
quiet_cmd_genenv = GENENV $@ -cmd_genenv = $(OBJCOPY) --dump-section .rodata.default_environment=$@ env/common.o; \ +cmd_genenv = $(OBJCOPY) --dump-section `${OBJDUMP} env/common.o -t |grep -m1 default_environment |awk '{print $$4}'`=$@ env/common.o; \ sed --in-place -e 's/\x00/\x0A/g' $@
u-boot-initial-env: u-boot.bin
It now appears to build without error with LTO enabled and disabled.
Marek
On Fri, Oct 22, 2021 at 02:49:17PM -0500, Adam Ford wrote:
On Fri, Oct 22, 2021 at 2:26 PM Marek Behún marek.behun@nic.cz wrote:
On Fri, 22 Oct 2021 14:19:16 -0500 Adam Ford aford173@gmail.com wrote:
I am not sure it's the right solution, but it appears to work for me on a board that uses LTO. I didn't try it with a board that doesn't use LTO.
Need to be tested with GCC as well as Clang.
Agreed.
I turned off LTO, and got an error, so I updated the diff to:
diff --git a/Makefile b/Makefile index 5194e4dc78..386180e935 100644 --- a/Makefile +++ b/Makefile @@ -2303,7 +2303,7 @@ endif $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
quiet_cmd_genenv = GENENV $@ -cmd_genenv = $(OBJCOPY) --dump-section .rodata.default_environment=$@ env/common.o; \ +cmd_genenv = $(OBJCOPY) --dump-section `${OBJDUMP} env/common.o -t |grep -m1 default_environment |awk '{print $$4}'`=$@ env/common.o; \ sed --in-place -e 's/\x00/\x0A/g' $@
u-boot-initial-env: u-boot.bin
It now appears to build without error with LTO enabled and disabled.
I think LLVM is just not supportable without a different set of logic, as env/common.o just isn't quite the same (with LTO it's an IR file, without it's an object, but doesn't quite have that section?).
On Fri, 22 Oct 2021 17:16:18 +0200 Patrick DELAUNAY patrick.delaunay@foss.st.com wrote:
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"
Seems that that script isn't executed in code integration, otherwise I would have noticed this.
participants (4)
-
Adam Ford -
Marek Behún -
Patrick DELAUNAY -
Tom Rini