Re: [lfs-support] Copy & Shift actual status of LFS to a faster device / compiling with a virtual partition

2017-10-29 Thread Michael D.


On 10/29/17 10:05 PM, DJ Lucas wrote:



On 10/29/2017 01:39 PM, Michael D. wrote:


On 10/29/17 2:04 PM, Axel wrote:

Dear all,


now I reached chapter6.20.

My host is an Aspire one with 4.9.0-4-amd64 and not very fast. But I
want to install LFS on this device finally.

I think about to use another device with  with  an amd64 processor as
well (Asus) to compile LFS and to shift the final OS to the old Aspire.



Hi Axel,

That shouldn't be a problem, but be sure to set the correct ARCH/CPU in
your C(XX)FLAGS to avoid the compiler to use/implement Instructions Sets
on the powerful computer, that isn't available on your target computer.

export CFLAGS="-march="
export CXXFLAGS=$CFLAGS
f


Been a while since I've done anything like this...one other gotcha is 
the final gmp build, make sure to copy config.fsf.




Reminded me of this command: gcc -v -march=native -Q --help=target

It'll give you a complete list of flags that's available/unavailable on 
the Aspire CPU in question.


I figure (no guarantees given) that one could use that list in the 
C(XX)FLAGS on the ASUS to make it match the Target CPU's capabilities.


./Michael
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Re: [lfs-support] Copy & Shift actual status of LFS to a faster device / compiling with a virtual partition

2017-10-29 Thread DJ Lucas



On 10/29/2017 01:39 PM, Michael D. wrote:


On 10/29/17 2:04 PM, Axel wrote:

Dear all,


now I reached chapter6.20.

My host is an Aspire one with 4.9.0-4-amd64 and not very fast. But I
want to install LFS on this device finally.

I think about to use another device with  with  an amd64 processor as
well (Asus) to compile LFS and to shift the final OS to the old Aspire.

Unfortunately I have no free space an the Asus and do not like to
change anything on the LVM partitions.

Can I create a virtual partition (file) with dd and mount it instead
of a "real" partition on the Asus?

Can I copy the actual status on the Aspire to the virtual partition of
the Asus to build the next steps faster?



Hi Axel,

That shouldn't be a problem, but be sure to set the correct ARCH/CPU in
your C(XX)FLAGS to avoid the compiler to use/implement Instructions Sets
on the powerful computer, that isn't available on your target computer.

export CFLAGS="-march="
export CXXFLAGS=$CFLAGS
f


Been a while since I've done anything like this...one other gotcha is 
the final gmp build, make sure to copy config.fsf.


--DJ

--
http://lists.linuxfromscratch.org/listinfo/lfs-support
FAQ: http://www.linuxfromscratch.org/blfs/faq.html
Unsubscribe: See the above information page

Do not top post on this list.

A: Because it messes up the order in which people normally read text.
Q: Why is top-posting such a bad thing?
A: Top-posting.
Q: What is the most annoying thing in e-mail?

http://en.wikipedia.org/wiki/Posting_style


Re: [lfs-support] Copy & Shift actual status of LFS to a faster device / compiling with a virtual partition

2017-10-29 Thread Michael D.


On 10/29/17 2:04 PM, Axel wrote:

Dear all,


now I reached chapter6.20.

My host is an Aspire one with 4.9.0-4-amd64 and not very fast. But I 
want to install LFS on this device finally.


I think about to use another device with  with  an amd64 processor as 
well (Asus) to compile LFS and to shift the final OS to the old Aspire.


Unfortunately I have no free space an the Asus and do not like to change 
anything on the LVM partitions.


Can I create a virtual partition (file) with dd and mount it instead of 
a "real" partition on the Asus?


Can I copy the actual status on the Aspire to the virtual partition of 
the Asus to build the next steps faster?




Hi Axel,

That shouldn't be a problem, but be sure to set the correct ARCH/CPU in 
your C(XX)FLAGS to avoid the compiler to use/implement Instructions Sets 
on the powerful computer, that isn't available on your target computer.


export CFLAGS="-march="
export CXXFLAGS=$CFLAGS

$ dd if=/dev/zero of=LFS_Part.img bs=1M count=20480
$ mkfs.ext4 LFS_Part.img
$ sudo mount -o loop LFS_Part.img /mnt/lfs

Tar/Untar as discussed yesterday :)

./Michael
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http://lists.linuxfromscratch.org/listinfo/lfs-support
FAQ: http://www.linuxfromscratch.org/blfs/faq.html
Unsubscribe: See the above information page

Do not top post on this list.

A: Because it messes up the order in which people normally read text.
Q: Why is top-posting such a bad thing?
A: Top-posting.
Q: What is the most annoying thing in e-mail?

http://en.wikipedia.org/wiki/Posting_style