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Can't get crossdev to set up for Raspberry Pi 3
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9a3eedi
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PostPosted: Sun Nov 20, 2016 2:22 pm    Post subject: Can't get crossdev to set up for Raspberry Pi 3 Reply with quote

I'm attempting to set up cross compilation for my Raspberry Pi 3 running at 32-bit. I have a Gentoo VM which I'm working with to be the cross-compiler host.

I've been following the instructions here:
https://wiki.gentoo.org/wiki/Raspberry_Pi/Cross_building#crossdev

Unfortunately I got stuck at the last part.

The first error I got was that crossdev now seems to need an argument for --ov-output, so I created a local overlay using the instructions here https://wiki.gentoo.org/wiki/Overlay/Local_overlay , and then pointed --ov-output to that directory, so now my command is:

Code:
crossdev -S -v -t armv7a-hardfloat-linux-gnueabi --ov-output /usr/local/portage-crossdev/


This results in the following output:

Code:

--------------------------------------------------------------------------------------------
 * Host Portage ARCH:     amd64
 * Target Portage ARCH:   arm
 * Target System:         armv7a-hardfloat-linux-gnueabi
 * Stage:                 4 (C/C++ compiler)
 * ABIs:                  default

 * binutils:              binutils-[stable]
 * gcc:                   gcc-[stable]
 * headers:               linux-headers-[stable]
 * libc:                  glibc-[stable]

 * CROSSDEV_OVERLAY:      /usr/local/portage-crossdev/
 * PORT_LOGDIR:           /var/log/portage
 * PORTAGE_CONFIGROOT:
 * Portage flags:          -v
  _  -  ~  -  _  -  ~  -  _  -  ~  -  _  -  ~  -  _  -  ~  -  _  -  ~  -  _  -  ~  -  _  - 
 * leaving sys-devel/binutils in /usr/local/portage-crossdev/
 * leaving sys-devel/gcc in /usr/local/portage-crossdev/
 * leaving sys-kernel/linux-headers in /usr/local/portage-crossdev/
 * leaving sys-libs/glibc in /usr/local/portage-crossdev/
 * leaving sys-devel/gdb in /usr/local/portage-crossdev/
 * leaving metadata/layout.conf alone in /usr/local/portage-crossdev/
  _  -  ~  -  _  -  ~  -  _  -  ~  -  _  -  ~  -  _  -  ~  -  _  -  ~  -  _  -  ~  -  _  -  ~  - 
 * Log: /var/log/portage/cross-armv7a-hardfloat-linux-gnueabi-binutils.log
 * Emerging cross-binutils ...

 * IMPORTANT: 13 news items need reading for repository 'gentoo'.
 * Use eselect news read to view new items.


These are the packages that would be merged, in order:

Calculating dependencies  ... done!

emerge: there are no ebuilds to satisfy "cross-armv7a-hardfloat-linux-gnueabi/binutils".

emerge: searching for similar names... nothing similar found.

 * binutils failed :(
 *
 * If you file a bug, please attach the following logfiles:
 * /var/log/portage/cross-armv7a-hardfloat-linux-gnueabi-info.log
 * /var/log/portage/cross-armv7a-hardfloat-linux-gnueabi-binutils.log.xz
 * /var/tmp/portage/cross-armv7a-hardfloat-linux-gnueabi/binutils*/temp/binutils-config.logs.tar.xz


I'm not sure what I'm doing wrong here. I found another thread that suggested that the name of the target might be mispelled, but I made sure that it's correct. Any other ideas?

Removed excessive line break decorations provided by crossdev - NeddySeagoon
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NeddySeagoon
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PostPosted: Sun Nov 20, 2016 2:36 pm    Post subject: Reply with quote

9a3eedi,

The --ov-output tells crossdev which overlay to put the cross ebuilds in.
Code:
--ov-output /usr/local/portage-crossdev/


Code:
$ eix cross-armv7a-hardfloat-linux-gnueabi/binutils
[I] cross-armv7a-hardfloat-linux-gnueabi/binutils [1]
     Available versions: 
     (2.21.1) 2.21.1-r1
     (2.22) 2.22-r1
     (2.23.2) 2.23.2
     (2.24) 2.24-r3{tbz2}
     (2.25) (~)2.25{tbz2} (~)2.25-r1{tbz2}
     (2.25.1) 2.25.1-r1{tbz2}
     (2.26.1) (~)2.26.1{tbz2}
     (git)  **9999
       {cxx multitarget nls static-libs test vanilla zlib}
     Installed versions:  2.25.1-r1(2.25.1){tbz2}(22:15:13 10/27/16)(cxx nls zlib \
-multitarget -static-libs -test -vanilla) 2.26.1(2.26.1){tbz2}(22:15:17 10/27/16)(cxx nls -multitarget -static-libs -test -vanilla)
     Homepage:            https://sourceware.org/binutils/
     Description:         Tools necessary to build programs

[1] "gentoo_static" /usr/local/gentoo-static
in my case /usr/local/gentoo-static

Portage won't look there unless you tell it about the overlay.
I have
make.conf:
PORTDIR_OVERLAY="/usr/local/gentoo-static /usr/local/portage"

That's probably depreciated in favour of a repros.conf entry now.

-- edit --
Fixed long line
_________________
Regards,

NeddySeagoon

Computer users fall into two groups:-
those that do backups
those that have never had a hard drive fail.
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9a3eedi
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Joined: 12 Jul 2007
Posts: 14

PostPosted: Sun Nov 20, 2016 6:26 pm    Post subject: Reply with quote

Thanks.

It seems I have missed the final instruction in the Local Overlay webpage, which is to create a file called /etc/portage/repos.conf/crossdev.conf with the following

Code:

[crossdev]
location = /usr/local/portage-crossdev
priority = 10
masters = gentoo
auto-sync = no


Your post made me realize this, thanks. I also had to add ~amd64 to my portage settings to get it to build.

Perhaps I should edit the wiki to account for these changes.
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