Re: [Libunwind-devel] compile error on ARM

[Sven Neumann]

On Thu, 2011-06-30 at 11:37 +0200, Sven Neumann wrote:

> Now the compilation breaks in the 'tests' directory:
> 
> Making all in tests
> make[2]: Entering directory 
> `/home/sven/git/buildroot/output/build/libunwind-e09f970/tests'
> /bin/bash ../libtool --tag=CC   --mode=link 
> /home/sven/git/buildroot/output/host/usr/bin/arm-unknown-linux-uclibcgnueabi-gcc
>   -O2 -pipe -O2 -g1 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE 
> -D_FILE_OFFSET_BITS=64 -fexceptions -Wall -Wsign-compare   -o test-varargs 
> test-varargs.o  
> /bin/bash ../libtool --tag=CC   --mode=link 
> /home/sven/git/buildroot/output/host/usr/bin/arm-unknown-linux-uclibcgnueabi-gcc
>   -O2 -pipe -O2 -g1 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE 
> -D_FILE_OFFSET_BITS=64 -fexceptions -Wall -Wsign-compare   -o Lperf-trace 
> Lperf-trace.o ../src/libunwind.la 
> libtool: link: 
> /home/sven/git/buildroot/output/host/usr/bin/arm-unknown-linux-uclibcgnueabi-gcc
>  -O2 -pipe -O2 -g1 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE 
> -D_FILE_OFFSET_BITS=64 -fexceptions -Wall -Wsign-compare -o test-varargs 
> test-varargs.o 
> test-varargs.o: In function `a':
> test-varargs.c:(.text+0x60): undefined reference to `backtrace'
> collect2: ld returned 1 exit status

OK, that's because our copy of uCLibC did not include support for the
backtrace function. Not sure if you might want to check for that in the
configure script or not...


Sven