[ptxdist] Issue compiling Linux 4.6 for ARM64

[ptxdist] Issue compiling Linux 4.6 for ARM64

[Christoph G. Baumann]

Hello list,

I ran into problems compiling Linux 4.6 for ARM64 (aarch64-v8a-linux-gnu-).
When I compile the kernel 'on foot' (ARCH=arm64
CROSS_COMPILE=aarch64-v8a-linux-gnu- make -j8 Image) everything works. The
resulting image also boots on the target.

When I try the same with PTXdist (2016.04.0) the generation of the kernel image
fails:
"kallsyms failure: relative symbol value 0xffffff8008080000 out of range in
relative mode"

Judging by some google findings regarding this error, it may have something to
do with the ld-wrapper in PTXdist.


Regards,
Christoph

-- 
* Christoph G. Baumann 
* chris@sgoc.de 
* http://www.sgoc.de/welcome.html 
* "Every little picofarad has a nanohenry all its own" -- Don Vonada

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Re: [ptxdist] Issue compiling Linux 4.6 for ARM64

[Michael Olbrich]

Hi,

On Thu, Jun 09, 2016 at 10:53:33PM +0200, Christoph G. Baumann wrote:
> I ran into problems compiling Linux 4.6 for ARM64 (aarch64-v8a-linux-gnu-).
> When I compile the kernel 'on foot' (ARCH=arm64
> CROSS_COMPILE=aarch64-v8a-linux-gnu- make -j8 Image) everything works. The
> resulting image also boots on the target.
> 
> When I try the same with PTXdist (2016.04.0) the generation of the kernel image
> fails:
> "kallsyms failure: relative symbol value 0xffffff8008080000 out of range in
> relative mode"
> 
> Judging by some google findings regarding this error, it may have something to
> do with the ld-wrapper in PTXdist.

Hmm, most extra options are blacklisted for the kernel. Try running PTXdist
with '-v'. With this option enabled, the wrapper will print the full
compiler command line. Then you can compare it with a kernel build outside
PTXdist.

Michael

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Re: [ptxdist] Issue compiling Linux 4.6 for ARM64

[Christoph G. Baumann]

Hello,

> Michael Olbrich <m.olbrich@pengutronix.de> hat am 14. Juni 2016 um 09:56
> geschrieben:
> 
> 
> Hmm, most extra options are blacklisted for the kernel. Try running PTXdist
> with '-v'. With this option enabled, the wrapper will print the full
> compiler command line. Then you can compare it with a kernel build outside
> PTXdist.

the example output for a compiler call looks like this:

aarch64-v8a-linux-gnu-gcc -Wp,-MD,drivers/usb/storage/.usual-tables.o.d
 -nostdinc -isystem
/opt/OSELAS.Toolchain-2014.12.2/aarch64-v8a-linux-gnu/gcc-4.9.2-glibc-2.20-binutils-2.24-kernel-4.3-sanitized/lib/gcc/aarch64-v8a-linux-gnu/4.9.2/include
-I./arch/arm64/include -Iarch/arm64/include/generated/uapi
-Iarch/arm64/include/generated  -Iinclude -I./arch/arm64/include/uapi
-Iarch/arm64/include/generated/uapi -I./include/uapi -Iinclude/generated/uapi
-include ./include/linux/kconfig.h -D__KERNEL__ -mlittle-endian -Wall -Wundef
-Wstrict-prototypes -Wno-trigraphs -fno-strict-aliasing -fno-common
-Werror-implicit-function-declaration -Wno-format-security -std=gnu89
-mgeneral-regs-only -fno-asynchronous-unwind-tables
-fno-delete-null-pointer-checks -O2 --param=allow-store-data-races=0
-Wframe-larger-than=2048 -fno-stack-protector -Wno-unused-but-set-variable
-fno-omit-frame-pointer -fno-optimize-sibling-calls
-fno-var-tracking-assignments -g -Wdeclaration-after-statement -Wno-pointer-sign
-fno-strict-overflow -fconserve-stack -Werror=implicit-int
-Werror=strict-prototypes -Werror=date-time -DCC_HAVE_ASM_GOTO -Idrivers/scsi
   -D"KBUILD_STR(s)=#s" -D"KBUILD_BASENAME=KBUILD_STR(usual_tables)"
 -D"KBUILD_MODNAME=KBUILD_STR(usb_storage)" -c -o
drivers/usb/storage/.tmp_usual-tables.o drivers/usb/storage/usual-tables.c


The output just before the error:

+ aarch64-v8a-linux-gnu-ld -EL -p --no-undefined -X --build-id -o .tmp_vmlinux1
-T ./arch/arm64/kernel/vmlinux.lds arch/arm64/kernel/head.o init/built-in.o
--start-group usr/built-in.o arch/arm64/kernel/built-in.o
arch/arm64/mm/built-in.o arch/arm64/net/built-in.o arch/arm64/crypto/built-in.o
./drivers/firmware/efi/libstub/lib.a kernel/built-in.o certs/built-in.o
mm/built-in.o fs/built-in.o ipc/built-in.o security/built-in.o crypto/built-in.o
block/built-in.o arch/arm64/lib/lib.a lib/lib.a arch/arm64/lib/built-in.o
lib/built-in.o drivers/built-in.o sound/built-in.o firmware/built-in.o
net/built-in.o virt/built-in.o --end-group
+ kallsyms .tmp_vmlinux1 .tmp_kallsyms1.o
+ info KSYM .tmp_kallsyms1.o
+ '[' '' '!=' silent_ ']'
+ printf '  %-7s %s\n' KSYM .tmp_kallsyms1.o
+ local kallsymopt
+ '[' -n '' ']'
+ '[' -n y ']'
+ kallsymopt=' --all-symbols'
+ '[' -n '' ']'
+ '[' -n '' ']'
+ '[' -n y ']'
+ kallsymopt=' --all-symbols --base-relative'
+ local 'aflags=-D__ASSEMBLY__  -Wa,-gdwarf-2 -DCC_HAVE_ASM_GOTO
                   		       -nostdinc -isystem
/opt/OSELAS.Toolchain-2014.12.2/aarch64-v8a-linux-gnu/gcc-4.9.2-glibc-2.20-binutils-2.24-kernel-4.3-sanitized/lib/gcc/aarch64-v8a-linux-gnu/4.9.2/include
-I./arch/arm64/include -Iarch/arm64/include/generated/uapi
-Iarch/arm64/include/generated  -Iinclude -I./arch/arm64/include/uapi
-Iarch/arm64/include/generated/uapi -I./include/uapi -Iinclude/generated/uapi
-include ./include/linux/kconfig.h -D__KERNEL__ -mlittle-endian  '
  KSYM    .tmp_kallsyms1.o
++ basename .tmp_kallsyms1.o .o
+ local afile=.tmp_kallsyms1.S
+ aarch64-v8a-linux-gnu-nm -n .tmp_vmlinux1
+ scripts/kallsyms --all-symbols --base-relative
kallsyms failure: relative symbol value 0xffffff8008080000 out of range in
relative mode
+ on_exit
+ '[' 1 -ne 0 ']'
+ cleanup
+ rm -f .old_version
+ rm -f .tmp_System.map
+ rm -f .tmp_kallsyms1.S
+ rm -f .tmp_version
+ rm -f .tmp_vmlinux1
+ rm -f System.map
+ rm -f vmlinux
+ rm -f vmlinux.o
make[1]: *** [vmlinux] Error 1
make[1]: Leaving directory
`/work/Sourcecode/ptxdist/platform-testH3/build-target/linux-4.6'



Regards,
Christoph

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