[Pkg-rust-maintainers] Bug#913414: Bug#913414: rustc: fails to compile release binaries due to non -fPIC code

[Ximin Luo]

Control: reassign -1 llvm-7 1:7.0.1~+rc2-2

LLVM-7 1:7-6 works fine for me, 1:7.0.1~+rc2-2 is broken.

With 1:7.0.1~+rc2-2, you can work around the failure by using "rustc -C relocation-model=default". I have no idea why this works, but it does.

X

Ximin Luo:
> The version of LLVM-7 in Debian unstable breaks rustc currently.
> 
> Can you try it with the LLVM-7 from Debian testing? i.e. this one:
> 
> $ apt-cache policy llvm-7
> llvm-7:
>   Installed: 1:7-6
>   Candidate: 1:7-6
>   Version table:
>      1:7.0.1~+rc2-2 300
>         300 http://deb.debian.org/debian unstable/main amd64 Packages
>  *** 1:7-6 990
>         990 http://deb.debian.org/debian testing/main amd64 Packages
>         100 /var/lib/dpkg/status
> 
> X
> 
> brian m. carlson:
>> Package: rustc
>> Version: 1.30.0+dfsg1-2
>> Severity: important
>>
>> If you attempt to build a release binary, rustc fails because of a bad
>> relocation when making a PIE object.
>>
>> Steps to reproduce:
>> 1. git clone https://github.com/rust-lang-nursery/rust-clippy.git
>> 2. cd rust-clippy
>> 3. git checkout v0.0.212
>> 4. cargo build --verbose --release
>> 5. Notice that the build fails.
>> 6. Notice messages like the following:
>>
>>   = note: /usr/bin/ld: /home/bmc/checkouts/external/rust-clippy/target/release/build/serde-3ddadc5e75c3de00/build_script_build-3ddadc5e75c3de00.build_script_build.140spq3r-cgu.2.rcgu.o: relocation R_X86_64_32S against `.rodata.cst16' can not be used when making a PIE object; recompile with -fPIC
>>           /usr/bin/ld: /home/bmc/checkouts/external/rust-clippy/target/release/build/serde-3ddadc5e75c3de00/build_script_build-3ddadc5e75c3de00.build_script_build.140spq3r-cgu.4.rcgu.o: relocation R_X86_64_32 against symbol `rust_eh_personality' can not be used when making a PIE object; recompile with -fPIC
>>           /usr/bin/ld: /home/bmc/checkouts/external/rust-clippy/target/release/build/serde-3ddadc5e75c3de00/build_script_build-3ddadc5e75c3de00.build_script_build.140spq3r-cgu.6.rcgu.o: relocation R_X86_64_32 against symbol `rust_eh_personality' can not be used when making a PIE object; recompile with -fPIC
>>           /usr/bin/ld: /home/bmc/checkouts/external/rust-clippy/target/release/build/serde-3ddadc5e75c3de00/build_script_build-3ddadc5e75c3de00.build_script_build.140spq3r-cgu.9.rcgu.o: relocation R_X86_64_32 against symbol `rust_eh_personality' can not be used when making a PIE object; recompile with -fPIC
>>           /usr/bin/ld: final link failed: nonrepresentable section on output
>>           collect2: error: ld returned 1 exit status
>>
>> I see similar errors on a project of my own which compiled fine on
>> November 3.  I also see this failure with rust 1.31.0 beta from
>> experimental.
>>
>> -- System Information:
>> Debian Release: buster/sid
>>   APT prefers unstable-debug
>>   APT policy: (500, 'unstable-debug'), (500, 'unstable'), (500, 'stable'), (1, 'experimental-debug'), (1, 'experimental')
>> Architecture: amd64 (x86_64)
>> Foreign Architectures: i386
>>
>> Kernel: Linux 4.18.0-2-amd64 (SMP w/4 CPU cores)
>> Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE=en_US.UTF-8 (charmap=UTF-8)
>> Shell: /bin/sh linked to /bin/dash
>> Init: systemd (via /run/systemd/system)
>> LSM: AppArmor: enabled
>>
>> Versions of packages rustc depends on:
>> ii  binutils              2.31.1-7
>> ii  gcc                   4:8.2.0-2
>> ii  libc6                 2.27-8
>> ii  libc6-dev [libc-dev]  2.27-8
>> ii  libgcc1               1:8.2.0-9
>> ii  libllvm7              1:7.0.1~+rc2-2
>> ii  libstd-rust-dev       1.30.0+dfsg1-2
>> ii  libstdc++6            8.2.0-9
>>
>> Versions of packages rustc recommends:
>> ii  cargo     0.31.0-2
>> ii  rust-gdb  1.30.0+dfsg1-2
>>
>> Versions of packages rustc suggests:
>> ii  rust-doc  1.30.0+dfsg1-2
>> pn  rust-src  <none>
>>
>> -- no debconf information
>>
> 
> 


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