Redpitaya OS build - RPC support not available in C library

[pita]

Hi !

I tried to compile the RedpitayaOS (official), but I get the following output at a later stage
in the make process:

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make -C OS/buildroot
make[1]: Entering directory `/home/red/redpitaya/RedPitaya/OS/buildroot'
make -C buildroot-2014.02 USER_HOOKS_EXTRA_ENV='VERSION=0.94-0-devbuild REVISION=devbuild'
make[2]: Entering directory `/home/red/redpitaya/RedPitaya/OS/buildroot/buildroot-2014.02'
>>> toolchain-external undefined Configuring
[b]RPC support not available in C library, please disable BR2_TOOLCHAIN_HAS_NATIVE_RPC[/b]
make[2]: *** [/home/red/redpitaya/RedPitaya/OS/buildroot/buildroot-2014.02/output/build/toolchain-external-undefined/.stamp_configured] Error 1
make[2]: Leaving directory `/home/red/redpitaya/RedPitaya/OS/buildroot/buildroot-2014.02'
make[1]: *** [buildroot-2014.02/output/images/rootfs.cpio.uboot] Error 2
make[1]: Leaving directory `/home/red/redpitaya/RedPitaya/OS/buildroot'
make: *** [buildroot] Error 2

I have Vivado+SDK installed... that part of the build process builds fine.
But as You can see - make fails at a later stage in buildroot.

Obviously this is related to RPC support that is not part of compiler's C library..
Of course I didn't forget to run these lines before running make:

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source /opt/Xilinx/Vivado/2015.4/settings64.sh
source /opt/Xilinx/SDK/2015.4/settings64.sh 

export CROSS_COMPILE=arm-xilinx-eabi-

So make should be using the right arm-xilinx-eabi compiler.
Has anyone of You ever encountered this warning ?

Best regards
pita

[pita]

Got it !
Seems to be a mistake in http://wiki.redpitaya.com/index.php?title=Red_Pitaya_OS manual.

Taking a look at the makefile in <master branch>/OS/buildroot/ it is

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export CROSS_COMPILE=arm-xilinx-linux-gnueabi-

you have to specify, not arm-xilinx-eabi-.

Furthermore add the line

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BR2_TOOLCHAIN_EXTERNAL_PATH="/opt/Xilinx/SDK/2015.4/gnu/arm/lin"

in config.armel in the same <master branch>/OS/buildroot dir.
(adapt 2015.4 to the SDK/Vivado version you got installed)

Best regards
pita

[Nils Roos]

Ah, right, I didn't immediately pick up on the CROSS_COMPILE.

As a general note: if you are building the master branch, you should only follow the instructions in the included READMEs. The informations in the wiki are still not up to date for the 0.94 ecosystem.

[pita]

V-v-v-version clash !
Good you mention it. I always follow instructions on the wiki's etc.