[Buildroot] Problem with external toolchain sysroot and eclipse

[Thomas Petazzoni <thomas.petazzoni@free-electrons.com>]

Dear Lars Dunemark,

On Tue, 16 Apr 2013 07:24:51 +0000, Lars Dunemark wrote:

> Recently, we discovered that it has become something strange with our external toolchain builds.
> 
> We discovered this when we wanted to start using Eclipse integration for buildroot and build applications outside buildroot.
> 
> After some investigation we discovered that the ext-toolchain-wrapper had changed and received support for relative paths.
> After adding some debug prints:
> toolchain/toolchain-external/ext-toolchain-wrapper.c
> 122         printf("path: %s, sysroot: %s\n", path, sysroot);
> 
> I got the the following result:
> 
> $ pwd
> /media/build/source
> $ arm-cortex_a8-linux-gnueabi-gcc
> path: /media/build/source/toolchain/bin/arm-cortex_a8-linux-gnueabi-gcc, sysroot: /media/usr/arm-buildroot-linux-gnueabi/sysroot
> arm-cortex_a8-linux-gnueabi-gcc: no input files
> 
> 
> $ ./buildroot/output/host/usr/bin/arm-cortex_a8-linux-gnueabi-gcc
> path: /media/build/source/toolchain/bin/arm-cortex_a8-linux-gnueabi-gcc, sysroot: /media/build/source/buildroot/output/host/usr/arm-buildroot-linux-gnueabi/sysroot
> arm-cortex_a8-linux-gnueabi-gcc: no input files

What is /media/build/source/toolchain/ ? How did you install things in
there ?

The toolchain that you must use with Buildroot is the one in
output/host/usr/bin/. Using something else will most likely not work
properly.

Can you give details about your /media/build/source/toolchain/
directory so that we can understand what is your configuration? It
doesn't look a standard way of using Buildroot.

Thanks,

Thomas
-- 
Thomas Petazzoni, Free Electrons
Kernel, drivers, real-time and embedded Linux
development, consulting, training and support.
http://free-electrons.com