Thanks Simon for the help.
I did the following on my x86_64 laptop :
###############################################################################
ajay@latitude-3480:~/unikraft/apps/helloworld$ arm-linux-gnueabihf-gcc
--version
arm-linux-gnueabihf-gcc (Ubuntu/Linaro 5.4.0-6ubuntu1~16.04.9) 5.4.0
20160609
Copyright (C) 2015 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
ajay@latitude-3480:~/unikraft/apps/helloworld$
CROSS_COMPILE=arm-linux-gnueabihf-gcc make clean
make[1]: Entering directory '/home/ajay/unikraft/unikraft'
CLEAN libxenplat
CLEAN libxenbus
CLEAN libkvmplat
CLEAN liblinuxuplat
CLEAN apphelloworld
CLEAN libukboot
CLEAN libukdebug
CLEAN libukargparse
CLEAN libnolibc
CLEAN libukalloc
CLEAN libukallocbbuddy
CLEAN libfdt
CLEAN build/
make[1]: Leaving directory '/home/ajay/unikraft/unikraft'
ajay@latitude-3480:~/unikraft/apps/helloworld$
CROSS_COMPILE=arm-linux-gnueabihf-gcc make menuconfig
###############################################################################
But I still do not see any arm-options :(
On Mon, Apr 30, 2018 at 2:56 PM, Simon Kuenzer <simon.kuenzer@xxxxxxxxx
<mailto:simon.kuenzer@xxxxxxxxx>> wrote:
On 30.04.2018 11:24, Simon Kuenzer wrote:
Hay Ajay,
you can actually do both - natively compile on ARM or doing a
cross compilation. Unikraft's main makefile is able to detect
this. This happens transparently. You can only influence it by
setting the CROSS_COMPILE environment variable before calling
make. You should need to remove the -mtune=cortex-a7 and
-mcpu=cortex-a7 flags from
unikraft/unikraft/arch/arm/Makefile.uk <http://efile.uk>.
Sorry, a "no" was missing here: Keep the -mtune=cortex-a7 and
-mcpu=cortex-a7 flags.
In fact, your GCC version might be too old. Unfortunately
Unikraft is not warning you yet but ARM published a patch series
that is going to warn you in the future.
On ARM, I just tested the native compile with
gcc (Debian 6.3.0-18) 6.3.0 20170516
I use the same for the cross compilation from x86:
arm-linux-gnueabihf-gcc (Debian 6.3.0-18) 6.3.0 20170516
For debugging, you can have a look what is getting called with
the verbose option:
make V=1
Thanks,
Simon
On 30.04.2018 10:27, Ajay Garg wrote:
https://github.com/nim-lang/Nim/issues/2620
<https://github.com/nim-lang/Nim/issues/2620> suggests it
might be due to (old) gcc version.
Any chance we can get the following via cross-compilation :
* arm-options in menuconfig screen?
* actually cross-compile for arm32 in unikraft
ecosystem?
On Mon, Apr 30, 2018 at 12:25 PM, Ajay Garg
<ajaygargnsit@xxxxxxxxx <mailto:ajaygargnsit@xxxxxxxxx>
<mailto:ajaygargnsit@xxxxxxxxx
<mailto:ajaygargnsit@xxxxxxxxx>>> wrote:
Hi Simon.
Right now, you can test Unikraft with Xen on arm32.
Be aware
that there is a open bug on the memory allocator
for arm
(see:https://wiki.xenproject.org/wiki/Category:Unikraft_Users <https://wiki.xenproject.org/wiki/Category:Unikraft_Users>
<https://wiki.xenproject.org/wiki/Category:Unikraft_Users
<https://wiki.xenproject.org/wiki/Category:Unikraft_Users>>).
arm64 with Xen is currently not supported but we
working on it.
Same for KVM and baremetal.
We use cubieboard2/3 for arm32 tests. These boards
are even
officially supported by Debian and can run Xen.
So we bought a cubieboard2 :)
Brought the board up without xen.
Then brought the board up with xen.
At this point, "sudo xl list" lists "Domain-0" fine.
Now, we are wanting to run the
helloworld-unikraft-unikernel.
To keep aside any cross-compilation issues, we are
compiling on
cubieboard2 itself.
Following is the .config file (majorly containing the
"ukdebug" and
"ukboot" changes required for arm32) :
#################################################################################
#
# Automatically generated file; DO NOT EDIT.
# Unikraft/0.2~8b94640 Configuration
#
#
# Architecture Selection
#
# ARCH_X86_64 is not set
ARCH_ARM_32=y
# MARCH_CORTEXA7 is not set
MARCH_A20NEON=y
#
# Platform Support
#
PLAT_XEN=y
XEN_DBGEMERGENCY=y
PLAT_LINUXU=y
LINUXU_DEFAULT_HEAPMB=4
#
# Library Configuration
#
HAVE_BOOTENTRY=y
# HAVE_LIBC is not set
# HAVE_SCHED is not set
LIBUKBOOT=y
LIBUKBOOT_BANNER=y
LIBUKBOOT_MAXNBARGS=60
# LIBUKBOOT_INITALLOC is not set
LIBUKDEBUG=y
LIBUKDEBUG_PRINTK=y
LIBUKDEBUG_PRINTD=y
# LIBUKDEBUG_PRINTD_EXTRA is not set
# LIBUKDEBUG_PRINTD_INFO is not set
# LIBUKDEBUG_PRINTD_WARN is not set
LIBUKDEBUG_PRINTD_ERR=y
# LIBUKDEBUG_PRINTD_CRIT is not set
# LIBUKDEBUG_NOREDIR is not set
# LIBUKDEBUG_REDIR_PRINTD is not set
LIBUKDEBUG_REDIR_PRINTK=y
LIBUKDEBUG_ENABLE_ASSERT=y
LIBUKARGPARSE=y
LIBNOLIBC=y
LIBUKALLOC=y
# LIBUKALLOC_IFPAGES is not set
# LIBUKALLOC_IFSTATS is not set
# LIBUKALLOCBBUDDY is not set
# LIBUKSCHED is not set
# LIBUKSCHEDCOOP is not set
LIBFDT=y
#
# Build Options
#
# OPTIMIZE_NONE is not set
OPTIMIZE_PERF=y
# OPTIMIZE_SIZE is not set
# OPTIMIZE_DEADELIM is not set
# DEBUG_SYMBOLS is not set
OPTIMIZE_STRIP=y
# RECORD_BUILDTIME is not set
CROSS_COMPILE=""
#
# Application Options
#
APPHELLOWORLD_DEPENDENCIES=y
APPHELLOWORLD_PRINTARGS=y
UK_NAME="helloworld"
#################################################################################
However, upon compilation, following is observed :
#################################################################################
debian@debian-armhf:~/unikraft/apps/helloworld$ make
make[1]: Entering directory
'/home/debian/unikraft/unikraft'
CP config
CC libxenplat: hypervisor.o
cc1: error: bad value (cortex-a7) for -mcpu switch
cc1: error: bad value (cortex-a7) for -mtune switch
/home/debian/unikraft/unikraft/support/build/Makefile.build:48:
recipe for target
'/home/debian/unikraft/apps/helloworld/build/libxenplat/hypervisor.o'
failed
make[1]: ***
[/home/debian/unikraft/apps/helloworld/build/libxenplat/hypervisor.o]
Error
1
make[1]: Leaving directory '/home/debian/unikraft/unikraft'
Makefile:6: recipe for target 'all' failed
make: *** [all] Error 2
debian@debian-armhf:~/unikraft/apps/helloworld$
#################################################################################
So, we proceed to remove the -mtune=cortex-a7 and
-mcpu=cortex-a7
flags from unikraft/unikraft/arch/arm/Makefile.uk
<http://efile.uk>.
Thereafter, upon recompiling, we get
#################################################################################
debian@debian-armhf:~/unikraft/apps/helloworld$ make
make[1]: Entering directory
'/home/debian/unikraft/unikraft'
CP config
CC libxenplat: hypervisor.o
In file included from
/home/debian/unikraft/unikraft/plat/xen/hypervisor.c:43:0:
/home/debian/unikraft/unikraft/include/uk/arch/atomic.h: In
function
‘ukarch_test_and_clr_bit’:
/home/debian/unikraft/unikraft/include/uk/arch/atomic.h:90:2:
warning: implicit declaration of function
‘__atomic_fetch_and’
[-Wimplicit-function-declaration]
/home/debian/unikraft/unikraft/include/uk/arch/atomic.h:90:40:
error: ‘__ATOMIC_RELAXED’ undeclared (first use in this
function)
/home/debian/unikraft/unikraft/include/uk/arch/atomic.h:90:40:
note:
each undeclared identifier is reported only once for
each function
it appears in
/home/debian/unikraft/unikraft/include/uk/arch/atomic.h: In
function
‘ukarch_test_and_set_bit’:
/home/debian/unikraft/unikraft/include/uk/arch/atomic.h:105:2:
warning: implicit declaration of function
‘__atomic_fetch_or’
[-Wimplicit-function-declaration]
/home/debian/unikraft/unikraft/include/uk/arch/atomic.h:105:38:
error: ‘__ATOMIC_RELAXED’ undeclared (first use in this
function)
/home/debian/unikraft/unikraft/include/uk/arch/atomic.h: In
function
‘ukarch_test_and_clr_bit_sync’:
/home/debian/unikraft/unikraft/include/uk/arch/atomic.h:148:40:
error: ‘__ATOMIC_SEQ_CST’ undeclared (first use in this
function)
/home/debian/unikraft/unikraft/include/uk/arch/atomic.h: In
function
‘ukarch_test_and_set_bit_sync’:
/home/debian/unikraft/unikraft/include/uk/arch/atomic.h:161:38:
error: ‘__ATOMIC_SEQ_CST’ undeclared (first use in this
function)
/home/debian/unikraft/unikraft/plat/xen/hypervisor.c:
In function
‘do_hypervisor_callback’:
/home/debian/unikraft/unikraft/plat/xen/hypervisor.c:71:2:
warning:
implicit declaration of function ‘__atomic_exchange_n’
[-Wimplicit-function-declaration]
/home/debian/unikraft/unikraft/plat/xen/hypervisor.c:71:7:
error:
‘__ATOMIC_SEQ_CST’ undeclared (first use in this function)
/home/debian/unikraft/unikraft/support/build/Makefile.build:48:
recipe for target
'/home/debian/unikraft/apps/helloworld/build/libxenplat/hypervisor.o'
failed
make[1]: ***
[/home/debian/unikraft/apps/helloworld/build/libxenplat/hypervisor.o]
Error
1
make[1]: Leaving directory '/home/debian/unikraft/unikraft'
Makefile:6: recipe for target 'all' failed
make: *** [all] Error 2
#################################################################################
What are we missing?
Thanks and Regards,
Ajay
Thanks and Regards,
Ajay
Thanks,
Simon
-- Regards,
Ajay
--
Regards,
Ajay
--
Regards,
Ajay
