[Buildroot] Problems building for ucLinux/ARM with elf2flt enabled

Anna Fischer (novero/Bochum) Anna.Fischer at novero.com
Wed Jul 24 12:05:40 UTC 2013


> Subject: Re: [Buildroot] Problems building for ucLinux/ARM with elf2flt
> enabled
> 
> On Wed, Jul 24, 2013 at 1:39 PM, Anna Fischer (novero/Bochum)
> <Anna.Fischer at novero.com> wrote:
> >> Subject: Re: [Buildroot] Problems building for ucLinux/ARM with
> >> elf2flt enabled
> >>
> >> Hi Anna,
> >>
> >> On Wed, Jul 24, 2013 at 12:02 PM, Anna Fischer (novero/Bochum)
> >> <Anna.Fischer at novero.com> wrote:
> >> > I'm trying to build a ucLinux system for an ARM platform (no-MMU),
> >> but when trying to enabled elf2flt in the menuconfig I get the
> >> following error:
> >> >
> >> > /home/buildroot-2013.05/output/build/host-binutils-
> >> 2.21.1/bfd/libbfd.a(compress.o): In function
> >> `bfd_compress_section_contents':
> >> > compress.c:(.text+0x25): undefined reference to `compressBound'
> >> > /home//buildroot-2013.05/output/build/host-binutils-
> >> 2.21.1/bfd/libbfd.a(compress.o): In function
> >> `bfd_get_full_section_contents':
> >> > compress.c:(.text+0x226): undefined reference to `inflateEnd'
> >> > compress.c:(.text+0x37a): undefined reference to `inflateInit_'
> >> > compress.c:(.text+0x3b0): undefined reference to `inflate'
> >> > compress.c:(.text+0x3bf): undefined reference to `inflateReset'
> >> > collect2: ld returned 1 exit status
> >> > make[1]: *** [elf2flt] Error 1
> >> > make[1]: Leaving directory `/home/buildroot-
> >> 2013.05/output/toolchain/elf2flt'
> >> > make: ***
> >> > [/home/buildroot-2013.05/output/toolchain/elf2flt/elf2flt]
> >> > Error 2
> >> >
> >> > It seems like it is missing libz? But I don't quite understand
> why,
> >> because I definitely have it installed on the system. Anyone ever
> >> seen this before?
> >> >
> >> > I'm using the buildroot internal toolchain, uClibc-0.9.33.2, gcc-
> >> 4.7.3, linux-3.8, and this is buildroot-2013.05. I have attached my
> >> .config as well. My build host is Ubuntu 64-bit.
> >>
> >> Do you have the -dev package of zlib? Also for 64-bit?
> >>
> >> On a CentOS system, I have seen a problem with the static version of
> >> zlib missing, when building a static toolchain with crosstool-ng. On
> >> CentOS, the static version (libz.a) is distributed as a separate
> >> package. I don't know if this is the case on your system.
> >
> > libz.a and libz.so are installed in output/host/usr/lib in the
> buildroot system, so apart from the fact that I have it installed as
> part of my Ubuntu distribution (yes, I have the -dev package
> installed), it is present in the buildroot output directory. The
> elf2flt Makefile also references this folder in LDFLAGS. It is not
> clear to me though if the problem is in elf2flt or in the binutils
> itself under build/host-binutils-2.21.1/bfd (as referenced by the error
> message I printed out above)?
> 
> Where exactly can you find libz in output/ ?

As I said in output/host/usr/lib/libz.*


> Since the error is in a host package, there should be such files in
> output/host/ Any libz files in output/staging are irrelevant, as these
> are for the target, not for the host.

The libraries are there, but I still get the error.


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