[ntp:questions] Help with cross-compiling NTP for the Raspberry Pi requested

David Taylor david-taylor at blueyonder.co.uk.invalid
Fri Mar 7 12:01:51 UTC 2014

On 06/03/2014 20:24, Rob Windgassen wrote:
> On Thu, 06 Mar 2014 16:20:27 +0000, David Taylor wrote:
>> How, in very simple terms, may I apply the same for cross-compiling NTP?
> When your kernel cross-compile was succesful you want to use the same
> compiler.
> You can achieve that by setting CC on the line with configure like
> CC=/home/david/kernel/tools/arm-bcm2708/arm-bcm2708hardfp-linux-gnueabi/
> arm-bcm2708hardfp-linux-gnueabi/bin/gcc \
> ../configure

Rob, Harlan,

Thanks for your continuing help.

Harlan, I wish it were as easy as setting the path, but doing an "ls" on 
that directory shows that all the tools have the prefix in front of 
their normal file name, for example:

$ ls 
arm-bcm2708hardfp-linux-gnueabi-addr2line     bcm2708hardfp-addr2line
arm-bcm2708hardfp-linux-gnueabi-ar            bcm2708hardfp-ar
arm-bcm2708hardfp-linux-gnueabi-as            bcm2708hardfp-as
arm-bcm2708hardfp-linux-gnueabi-c++           bcm2708hardfp-c++
arm-bcm2708hardfp-linux-gnueabi-cc            bcm2708hardfp-cc
arm-bcm2708hardfp-linux-gnueabi-c++filt       bcm2708hardfp-c++filt
arm-bcm2708hardfp-linux-gnueabi-cpp           bcm2708hardfp-cpp
arm-bcm2708hardfp-linux-gnueabi-ct-ng.config  bcm2708hardfp-ct-ng.config
arm-bcm2708hardfp-linux-gnueabi-elfedit       bcm2708hardfp-elfedit
arm-bcm2708hardfp-linux-gnueabi-g++           bcm2708hardfp-g++
arm-bcm2708hardfp-linux-gnueabi-gcc           bcm2708hardfp-gcc
arm-bcm2708hardfp-linux-gnueabi-gcc-4.7.1     bcm2708hardfp-gcc-4.7.1


I tried setting the CC variable as you suggested, and it does then show 
the cross-compiler when the version is checked:

export CC
${CC} --version

However, as above, I guess that still leaves all the other tools used in 
the NTP build (such as CCLD) pointing at the wrong version of the 
executables.  I can then do a configure and make, but the executables 
are still not the expected size (again, I guess, because the wrong tools 
are being used).

Any further suggestions?

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