[yocto] Fail to build core-image-minimal when MACHINE=genericx86-64

Tue Oct 29 19:28:18 PDT 2013

Thanks, Khem.

Following your suggestion, I tried removing the com32/ subdirectory from 
the build, by modifying the do_configure() routine in syslinux_6.01.bb 
recipe. It did not work, there were errors related to missing .o files 
in a later step.

Your response prompted me to look further.

It appears that in the do_install() step, the syslinux recipe is using 
the host gcc and ld, and not the cross-compiler gcc and ld.

For example, from the do_install log:
> gcc -Wp,-MT,ctime.o,-MD,./.ctime.o.d -std=gnu99     -fno-stack-protector -fwrapv -freg-struct-return -Os -fPIC -fno-exceptions -fno-asynchronous-unwind-tables -fno-strict-aliasing -falign-functions=0 -falign-jumps=0 -falign-labels=0 -falign-loops=0 -mregparm=3 -DREGPARM=3 -W -Wall -Wstrict-prototypes  -fomit-frame-pointer -D__COM32__ -nostdinc -iwithprefix include -I/home/markus/yocto/genericx86-64-dora-10.0.0/build/tmp/work/x86_64-linux/syslinux-native/6.01-r0/syslinux-6.01/com32/libutil/include -I/home/markus/yocto/genericx86-64-dora-10.0.0/build/tmp/work/x86_64-linux/syslinux-native/6.01-r0/syslinux-6.01/com32/include -I/home/markus/yocto/genericx86-64-dora-10.0.0/build/tmp/work/x86_64-linux/syslinux-native/6.01-r0/syslinux-6.01/com32/include/sys -I/home/markus/yocto/genericx86-64-dora-10.0.0/build/tmp/work/x86_64-linux/syslinux-native/6.01-r0/syslinux-6.01/com32/gplinclude -c -o ctime.o /home/markus/yocto/genericx86-64-dora-10.0.0/build/tmp/work/x86_64-linux/syslinux-native/6.01-r0/syslinux-6.01/com32/libupload/ctime.c

Additionally, according to the makefile fragment "com32.mk" (in the 
directory 
~/yocto/genericx86-64-dora-10.0.0/build/tmp/work/x86_64-poky-linux/syslinux/6.02-r0/syslinux-6.02/mk/) 
there should be some architecture related parameters following "-std=gnu99".
To see why not, I had a look in the file "syslinux.mk" (in the same 
directory). The architecture selection is done via the SUBARCH and ARCH 
variables. I tried various sed commands in the BB recipe do_configure() 
step to force ARCH to "x86_64", but nothing seemed to make it work.

Next I tried the following change in the do_install() step in the BB recipe:

Before:
     oe_runmake install INSTALLROOT="${D}" firmware="bios"

After:
     oe_runmake install CC="${CC} ${CFLAGS}" LDFLAGS="${LDFLAGS} -A 
i386" INSTALLROOT="${D}" ${SYSLINUX_ARCH} firmware="bios"

Now the cross-compiler was being invoked, but with conflicting flags:

> x86_64-poky-linux-gcc  -m64 
> --sysroot=/home/markus/yocto/genericx86-64-dora-10.0.0/build/tmp/sysroots/genericx86-64 
> -O2 -pipe -g -feliminate-unused-debug-types 
> -Wp,-MT,ctime.o,-MD,./.ctime.o.d -std=gnu99 -m32 -march=i386 
> -mpreferred-stack-boundary=2  -fno-stack-protector -fwrapv 
> -freg-struct-return -Os -fPIC -fno-exceptions 
> -fno-asynchronous-unwind-tables -fno-strict-aliasing 
> -falign-functions=0 -falign-jumps=0 -falign-labels=0 -falign-loops=0 
> -mregparm=3 -DREGPARM=3 -W -Wall -Wstrict-prototypes  
> -fomit-frame-pointer -D__COM32__ -nostdinc -iwithprefix include 
> -I/home/markus/yocto/genericx86-64-dora-10.0.0/build/tmp/work/x86_64-poky-linux/syslinux/6.02-r0/syslinux-6.02/com32/libutil/include 
> -I/home/markus/yocto/genericx86-64-dora-10.0.0/build/tmp/work/x86_64-poky-linux/syslinux/6.02-r0/syslinux-6.02/com32/include 
> -I/home/markus/yocto/genericx86-64-dora-10.0.0/build/tmp/work/x86_64-poky-linux/syslinux/6.02-r0/syslinux-6.02/com32/include/sys 
> -I/home/markus/yocto/genericx86-64-dora-10.0.0/build/tmp/work/x86_64-poky-linux/syslinux/6.02-r0/syslinux-6.02/com32/gplinclude 
> -c -o ctime.o 
> /home/markus/yocto/genericx86-64-dora-10.0.0/build/tmp/work/x86_64-poky-linux/syslinux/6.02-r0/syslinux-6.02/com32/libupload/ctime.c

The build didn't work, there were more errors during the link stage.

Basically it looks like the syslinux recipe cannot handle 
cross-compilation to x86_64 at the moment. Making it work is a little 
bit outside my experience level. I feel like I am feeling around in the 
dark here. Maybe could someone else take a look at this?

Thanks very much
Markus

On 10/29/2013 07:11 PM, Khem Raj wrote:
> On Tue, Oct 29, 2013 at 3:55 PM, Markus Svilans <msvilans at aeonyx.ca> wrote:
>> Dear list,
>>
>> A quick update:
>>
>> - The same build failure occurred when I tried "bitbake core-image-minimal"
>> using a fresh poky 1.5 downloaded from the Yocto web site, with MACHINE set
>> to genericx86-64.
>> - The same build failure occurred when I manually created a recipe for
>> syslinux 6.02 and tried to build it directly "bitbake syslinux"
>>
>> Any assistance would be greatly appreciated.
> its failing while building syslinux-native package and as it seems
> from errors, its not building com32 bits by passing -m32
> flags to compiler. Seems like you need to hack syslinux build and add
> -m32 when building com32/ subdir or alternatively
> remove it from build
>
> sed -e 's,com32/\S*,,g' -i Makefile
>
> but that may not be best thing to do.
>
>
>> Thanks very much
>> Markus
>>
>>
>>
>> On 10/29/2013 05:40 PM, Markus Svilans wrote:
>>
>> Dear list,
>>
>> I'm trying to build a core-image-minimal recipe using MACHINE=genericx86-64
>> but it always fails at syslinux-native-6.01 recipe. I've tried deleting my
>> tmp and build folders several times, but it will not build. I am using the
>> genericx86-64 BSP package downloaded from the Yocto website, located at:
>>
>> https://www.yoctoproject.org/download/intel-x86-64-based-pcs-and-devices-genericx86-64
>>
>> File: genericx86-64-dora-10.0.0.tar.bz2
>>
>> I extracted it to:
>> /home/markus/yocto/genericx86-64-dora-10.0.0
>>
>> Then ran the "oe-init-build-env" script and editted local.conf to enable
>> parallel make, and changed MACHINE to genericx86-64. (I've attached a copy
>> of my local.conf file.)
>>
>> After that, I ran the command "bitbake core-image-minimal" and sat back,
>> waiting for it to build.
>>
>> The build always fails at syslinux-native.
>>
>> I tried several things:
>> - deleted tmp directory, re-try build = failure
>> - deleted build directory, re-try build = failure
>> - deleted build directory, build only syslinux = failure
>> - deleted build directory, build only syslinux-native = failure
>>
>> I think I may be doing something wrong, because about an hour of Google
>> searching did not turn up anybody having a similar issue.
>>
>> I am running Kubuntu 13.10 64-bit.
>>
>> Can anyone please offer any advice, so that I can successfully build x86-64
>> images?
>>
>> Thanks very much
>> Markus
>>
>>
>>
>>
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