[Pkg-rust-maintainers] Bug#819475: Bug#819475: Bug#819475: rustc not run depend on gcc 4.9.2

[Angus Lees]

On Wed, 30 Mar 2016 at 13:27 Lihe Wang <wanglihe.programmer at gmail.com>
wrote:

> #~ rustc hello.rs
> error: linking with `cc` failed: exit code: 1
> note: "cc" "-Wl,--as-needed" "-m64" "-L"
> "/usr/lib/rustlib/x86_64-unknown-linux-gnu/lib" "hello.0.o" "-o" "hello"
> "-Wl,--gc-sections" "-pie" "-nodefaultlibs" "-L"
> "/usr/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic"
> "-Wl,-Bdynamic"
> "/usr/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-6a154fe0.rlib"
> "/usr/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcollections-6a154fe0.rlib"
> "/usr/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_unicode-6a154fe0.rlib"
> "/usr/lib/rustlib/x86_64-unknown-linux-gnu/lib/librand-6a154fe0.rlib"
> "/usr/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-6a154fe0.rlib"
> "/usr/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc_jemalloc-6a154fe0.rlib"
> "/usr/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-6a154fe0.rlib"
> "/usr/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-6a154fe0.rlib" "-l"
> "dl" "-l" "pthread" "-l" "gcc_s" "-l" "pthread" "-l" "c" "-l" "m" "-l" "rt"
> "-l" "compiler-rt"
> note: /usr/bin/ld:
> /usr/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc_jemalloc-6a154fe0.rlib(jemalloc.pic.o):
> unrecognized relocation (0x2a) in section `.text.malloc_conf_init'
> /usr/bin/ld: final link failed: Bad value
> collect2: error: ld returned 1 exit status
>

It looks like this is a change in recent binutils (see discussion in
Bug#808205) - which I _think_ means our static libraries (librust-std-dev)
need to depend on binutils >= 2.25.90.20151209-1.  I note in the glibc-dev
case, however, the decision was "I therefore don't think we need to fix
that at the glibc level. Either we just ignore the problem saying we don't
support partial upgrades or we try to find a global way to fix the
dependencies for all libraries."

Lihe: The short version for you is if you're trying to run a mixed
stable/testing system(*), then you will also need to install binutils from
testing.
(*) rather than rebuild rustc.deb from source for stable.  If we had enough
man-power, it would probably make sense for us to maintain a rustc.deb for
stable-backports.

 - Gus
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.alioth.debian.org/pipermail/pkg-rust-maintainers/attachments/20160330/cd5f5a4d/attachment.html>