64bit Genode and Fiasco.OC
d.waddington at ...60...
Mon Mar 14 17:46:39 CET 2011
It looks like I need to add -m32 -L/usr/lib32 to the linux-compiled
build flags - not sure how to do this, CC_OPT doesn't seem to percolate
On 03/12/2011 04:11 AM, Norman Feske wrote:
> Hi David,
> as outlined by Stefan, the 'linux_x86' platform looks for the host
> system and automatically decides whether to build for 32bit or 64bit. If
> the host system is 64bit, then Genode is built for 64bit. This is
> because our only current use case for the linux version is running
> Genode on the host. However, in your case, this causes trouble.
> I'll try to briefly describe what is going on: You can find the
> detection-magic at 'base-linux/etc/specs.conf'. Depending on the host
> system, the 'spec.conf' file will set the 'linux_x86_64' or
> 'linux_x86_32' spec value, which triggers the inclusion of
> 'base-linux/mk/spec-linux_x86_32.mk' or
> 'base-linux/mk/spec-linux_x86_64.mk' respectively. In these files, the
> spec value 'x86_32' (or 'x86_64') get defined, which gets further broken
> up in 'base/mk/spec-x86_32.mk' (analogously for 64bit). This spec file
> adds the '32bit' spec value. If you like to peek onto the result of the
> successive spec decomposition, you might add the following line to
> '<build-dir>/Makefile' (right after the 'export SPECS' line:
> $(warning SPECS=$(SPECS))
> As Stefan already mentioned, you can override the default SPECS
> definition by a custom '<build-dir>/etc/specs.conf' file. Note the use
> of the assignment in contrast to the version found in
>> I tried to force LIB_MK to the right syscall.mk but it then followed
>> with a load of redefinition errors. Below is the make VERBOSE_DIR= output.
>> Error: bad register name `%rsi'
> It seems that the build system has not picked up your custom SPECS
> definition and still tries to use the SPECS as defined in
> 'base-linux/etc/specs.conf'. Hence, the build system keeps trying to
> build the 64bit code with the 32bit compiler. As a quick work-around,
> just to see if the code works, you may modify the
> 'base-linux/etc/specs.conf' file. But we should investigate why the
> build system ignores your '<build-dir>/etc/specs.conf' file. Could I
> have a look at your version of the file?
> Best regards
*Daniel G. Waddington Ph.D. C.Sci. **| **Samsung Information Systems
Principal Engineer/Research Manager, Systems Research Group, Computer
t: 408-544-5675 f: 408-544-5540 c: 408-890-0479
d.waddington at ...60... <mailto:d.waddington at ...60...>
*****P*lease consider the environment before printing this email.
This message is intended only for the named recipient(s) above and may
contain confidential or privileged informat ion or protected attorney
work product. If you are not the intended recipient, any review,
dissemination, distribution or copying is strictly prohibited. If you
have received this message in error, please immediately notify the
sender and delete this message and its attachments from your computer
and dispose of all other copies or printouts. Thank you.
-------------- next part --------------
An HTML attachment was scrubbed...
More information about the users