Hi Ferry,
On 08.10.2017 18:50, Ferry Toth wrote:
Op Fri, 25 Aug 2017 22:30:42 +0000, schreef Ferry Toth:
Op Fri, 25 Aug 2017 21:22:40 +0200, schreef Ferry Toth:
Khem Raj wrote:
On 8/23/17 3:40 PM, Ferry Toth wrote:
Op Wed, 23 Aug 2017 14:51:55 -0700, schreef Khem Raj:
On 8/23/17 2:29 PM, Ferry Toth wrote:
Ferry Toth wrote:
Khem Raj wrote:
On 8/22/17 11:41 PM, Ferry Toth wrote:
I am having trouble building a specific U-Boot version with
Yocto. Outside of Yocto on 64 bit Ubuntu 17.04 with multilib it
builds fine.
I am extending meta-intel-edison to build a 64 bit Poke Morty,
with a vanilla 64-bit kernel (4.12). This is working quite well.
My host is x86_64, the target is core2 with tune=core-64.
Without 64bit tune I can build U-Boot fine. With 64bit it can
not link, appearently because it needs lbgcc.a
what is exact error message ? is it while compiling host bits or
target bits ?
The failing line is:
x86_64-poky-linux-ld.bfd -Bsymbolic -Bsymbolic-functions -m
elf_i386 --emit- relocs --wrap=__divdi3 --wrap=__udivdi3
--wrap=__moddi3 --wrap=__umoddi3 -- gc-sections -pie -Bstatic
--no-dynamic-linker -Ttext 0x01101000 -o u-boot -T u-boot.lds
arch/x86/cpu/start.o --start-group arch/x86/cpu/built-in.o
arch/x86/lib/built-in.o board/intel/edison/built-in.o
cmd/built-in.o common/built-in.o disk/built-in.o
drivers/built-in.o drivers/dma/built-in.o drivers/gpio/built-in.o
drivers/i2c/built-in.o drivers/mmc/built-in.o
drivers/mtd/built-in.o drivers/mtd/onenand/built-in.o
drivers/mtd/spi/built- in.o drivers/net/built-in.o
drivers/net/phy/built-in.o drivers/pci/built- in.o
drivers/power/built-in.o drivers/power/battery/built-in.o
drivers/power/domain/built-in.o
drivers/power/fuel_gauge/built-in.o drivers/power/mfd/built-in.o
drivers/power/pmic/built-in.o drivers/power/regulator/built-in.o
drivers/serial/built-in.o drivers/spi/built-in.o
drivers/usb/common/built-in.o drivers/usb/dwc3/built- in.o
drivers/usb/emul/built-in.o drivers/usb/eth/built-in.o
drivers/usb/gadget/built-in.o drivers/usb/gadget/udc/built-in.o
drivers/usb/host/built-in.o drivers/usb/musb-new/built-in.o
drivers/usb/musb/built-in.o drivers/usb/phy/built-in.o
drivers/usb/ulpi/built-in.o dts/built-in.o fs/built-in.o
lib/built-in.o net/built-in.o test/built-in.o test/dm/built-in.o
--end-group arch/x86/lib/lib.a -Map u-boot.map ERROR: oe_runmake
failed arch/x86/lib/built-in.o: In function `__wrap___udivdi3':
/home/ferry/tmp/edison-intel/my/edison-
morty/out/linux64/build/tmp/work/edison-poky-linux/u-boot/edison-
v2017.03-
r0/git/arch/x86/lib/gcc.c:25: undefined reference to
`__normal___udivdi3'
I as believe the missing lib is libgcc.a I just my sysroot and
found it here:
the linker cmdline above does not link with libgcc and there might
be a good reason for that, many standalone applications dont link
with libgcc intentionally. You could look into the code and see if
it can be written differently such that gcc does not have to invoke
a helper function from gcc runtime. Another option is to link with
libgcc explicitly
If change my setup to build for a 32bit target, it build u-boot
without error.
compiler may not be generating calls for the missing function.
When I build the same git outside yocto on 64bit with multilib
installed it also builds without error. In that case the make command
would be: make -j8 edison_defconfig
same is possible. Can you do readelf -sW gcc.o and see if there is a
undefined reference to __normal___udivdi3
20: 00000000 22 FUNC GLOBAL HIDDEN 4 __wrap___divdi3 21:
00000000 0 NOTYPE GLOBAL DEFAULT UND __normal___divdi3 22:
00000000 22 FUNC GLOBAL HIDDEN 6 __wrap___udivdi3 23:
00000000 0 NOTYPE GLOBAL DEFAULT UND __normal___udivdi3 24:
00000000 22 FUNC GLOBAL HIDDEN 8 __wrap___moddi3 25:
00000000 0 NOTYPE GLOBAL DEFAULT UND __normal___moddi3 26:
00000000 22 FUNC GLOBAL HIDDEN 10 __wrap___umoddi3 27:
00000000 0 NOTYPE GLOBAL DEFAULT UND __normal___umoddi3
AFAIKT when building for a 32-bit target is only that U-Boot makefile is
called with CROSS_COMPILE=i686-poky-linux- CC=i686-poky-linux-gcc
instead of CROSS_COMPILE=x86_64-poky-linux- CC=x86_64-poky-linux-gcc.
Result from readelf -sW gcc.o built wuth i686:
20: 00000000 27 FUNC GLOBAL HIDDEN 4 __wrap___divdi3 21:
00000000 0 NOTYPE GLOBAL DEFAULT UND __normal___divdi3 22:
00000000 27 FUNC GLOBAL HIDDEN 6 __wrap___udivdi3 23: 00000000
0 NOTYPE GLOBAL DEFAULT UND __normal___udivdi3 24: 00000000 27
FUNC GLOBAL HIDDEN 8 __wrap___moddi3 25: 00000000 0 NOTYPE
GLOBAL DEFAULT UND __normal___moddi3 26: 00000000 27 FUNC GLOBAL
HIDDEN 10 __wrap___umoddi3 27: 00000000 0 NOTYPE GLOBAL DEFAULT
UND __normal___umoddi3
The path to libs and incs is the same (x86_64...) and I can't find any
libgcc.a there. Still it links in this case.
Maybe in the 64-bit case I need to add i686-poky-linux-gcc to native and
modify the recipe to use that?
My conclusion: I have some bb variable set to the wrong value or I
need to get multilib installed into /..../sysroots/x86_64-linux/lib.
So how to do that?
sysroots/lib32-edison/usr/lib/i686-pokymllib32-linux/6.2.0/
sysroots/lib32-edison-tcbootstrap/usr/lib/i686-pokymllib32-
linux/6.2.0/
sysroots/edison/usr/lib64/x86_64-poky-linux/6.2.0/
sysroots/edison-tcbootstrap/usr/lib64/x86_64-poky-linux/6.2.0/
How compile log shows:
NOTE: make -j8 CROSS_COMPILE=x86_64-poky-linux-
CC=x86_64-poky-linux-gcc --sysroot=/..../sysroots/edison V=1
HOSTCC=gcc -isystem/..../sysroots/x86_64-linux/usr/include -O2
-pipe -L/..../sysroots/x86_64-linux/usr/lib
-L/..../sysroots/x86_64-linux/lib
-Wl,-rpath-link,/..../sysroots/x86_64-linux/usr/lib
-Wl,-rpath-link,/..../sysroots/x86_64-linux/lib
-Wl,-rpath,/..../sysroots/x86_64-linux/usr/lib
-Wl,-rpath,/..../sysroots/x86_64-linux/lib -Wl,-O1 -C
/..../out/linux64/build/tmp/work/edison-poky-linux/u-boot/edison-
v2017.03-r0/git
O=/..../out/linux64/build/tmp/work/edison-poky-linux/u-
boot/edison-v2017.03-r0/build edison_defconfig
(.... my edits to shorten the uninteresting part of the path)
I would think: --sysroot points to /edison dir which actually
contains libgcc.a, but -i, _l and -W1 options point to host dirs
that don't have the lib.
I attempted to add multilib, but although that immediately
exposed bugs in other recipes but actually adds libgcc.a, it
does that for the target sysroot only.
And for some reason, U-Boot is built with the native gcc
(x86_64-linux),
and multilib does not add libgcc.a to that sysroot.
So, how do I add multilib to -native sysroot, preferably only to
-native and not to the target, as the target has not further use
for it?
Strangest thing is in u-boot.inc there is:
EXTRA_OEMAKE = 'CROSS_COMPILE=${TARGET_PREFIX}
CC="${TARGET_PREFIX}gcc ${TOOLCHAIN_OPTIONS}" V=1'
EXTRA_OEMAKE += 'HOSTCC="${BUILD_CC} ${BUILD_CFLAGS}
${BUILD_LDFLAGS}"'
But when I check my log file:
NOTE: make -j8 CROSS_COMPILE=x86_64-poky-linux-
CC=x86_64-poky-linux- gcc ......
So TARGET_PREFIX resolves to x86_64-poky-linux, but I think my
target is core2_64 (or something like that). Is that normal for
U-Boot?
thats ok.
I am a little lost, so any help would be greatly appreciated
I added multilib to the meta0intel-edison-bsp machine conf:
#multilib
require conf/multilib.conf
MULTILIBS = "multilib:lib32"
DEFAULTTUNE_virtclass-multilib-lib32 = "core2-32"
IMAGE_INSTALL_append = " lib32-libgcc"
This exposes a lot recipy bugs in other places that needed to be fixed
first.
Then I changed IMAGE_INSTALL += "u-boot" to "lib32_u-boot". Now it builds
without error.
Now I changed IMAGE_INSTALL tot EXTRA_IMAGEDEPENDS. I believe that will
prevent u-boot and the otherwise unecessary multilib to be installed on
the image. Not sure if that really works out as I hope.
All of this now causes populate_sdk to fail, but I will post that
seperately.
Thanks all for the usefull comments.
Just a quick update on this. I recently sent a patch to the U-Boot list,
fixing this x86 toolchain dependency in mainline U-Boot:
https://patchwork.ozlabs.org/patch/842613/
This patch will be included in the upcoming release (2018.01).
Thanks,
Stefan
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