Nightlies don't work on RHEL 6.5

[buster]

With regards to #9545 :

Rust is not only not working on RHEL5, but looks like it's also not running on RHEL6:

-bash-4.1# ./install.sh 
install: looking for install programs
install: found mkdir
install: found printf
install: found cut
install: found grep
install: found uname
install: found tr
install: found sed
install: 
install: processing ./install.sh args
install: 
install: CFG_PREFIX           := /usr/local 
install: CFG_LIBDIR           := /usr/local/lib 
install: CFG_MANDIR           := /usr/local/share/man 
install: 
install: validating ./install.sh args
install: 
install: verifying platform can run binaries
/root/rust-nightly-x86_64-unknown-linux-gnu/bin/rustc: /usr/lib64/libstdc++.so.6: version `GLIBCXX_3.4.15' not found (required by /root/rust-nightly-x86_64-unknown-linux-gnu/lib/librustc_llvm-4e7c5e5c.so)
install: error: can't execute rustc binary on this platform

[alexcrichton]

This is actually the nightlies not working. The snapshots for linux are statically linked to libstdc++, while the nightlies are not.

[buster]

Oops, sorry for the confusion. Yes, the nightlies.
Will Rust after 0.11 not support RHEL6?

[alexcrichton]

Does RHEL6 support a C++11 compiler? If you install one, then rustc will likely work.

[buster]

I don't know. I actually only want to run a rust compiled program on RHEL6, not rust itself.
But it looks like i'll need to compile it on RHEL6 for that because of GLIBC.
I actually do the coding on Debian.

[alexcrichton]

In general rust programs themselves run almost wherever, but it'll likely be hindered by a newer libc if you're linking locally against one.

[buster]

So, how would i get my rust program working on RHEL6 then?
Is it possible to link against an older one or something like that? :)

[alexcrichton]

I would first try to compile the program and then run it on RHEL6 and see if an error happens, it's likely that it'll just work.

[buster]

Unfortunately not:
/lib64/libc.so.6: version GLIBC_2.14' not found`

[alexcrichton]

In that case you'll need to find a system with an older libc and compile on that system, or possibly find an older libc to compile against on the system where you're compiling

[buster]

I'll try to get rust compiled in a Centos 6.5 vagrant image and hope that works, then..
I hope that the compiler releases won't have such limitations since my work primarily still is on RHEL5 (starting to get to 6, but i won't see a RHEL7 for the next ~2 years)...

[buster]

So, installing g++ 4.7 on CentOS6.5 let me build rustc and compile the program... Thanks!

[brson]

Nominating since we need to be able to support RHEL 6.

[alexcrichton]

Nightlies are now built on CentOS 5.10 and statically link libstdc++, can you confirm that the binaries work for you now?

[buster]

Do i need to wait for the nightlies download?
I get another error now, though:

-bash-4.1# ./install.sh 
install: looking for install programs
install: found mkdir
install: found printf
install: found cut
install: found grep
install: found uname
install: found tr
install: found sed
install: 
install: processing ./install.sh args
install: 
install: CFG_PREFIX           := /usr/local 
install: CFG_LIBDIR           := /usr/local/lib 
install: CFG_MANDIR           := /usr/local/share/man 
install: 
install: validating ./install.sh args
install: 
install: verifying platform can run binaries
/root/rust-nightly-x86_64-unknown-linux-gnu/bin/rustc: /usr/lib64/libstdc++.so.6: version `GLIBCXX_3.4.15' not found (required by /root/rust-nightly-x86_64-unknown-linux-gnu/lib/librustc_llvm-4e7c5e5c.so)
install: error: can't execute rustc binary on this platform
-bash-4.1# ldd /root/rust-nightly-x86_64-unknown-linux-gnu/lib/librustc_llvm-4e7c5e5c.so
ldd: warning: you do not have execution permission for `/root/rust-nightly-x86_64-unknown-linux-gnu/lib/librustc_llvm-4e7c5e5c.so'
/root/rust-nightly-x86_64-unknown-linux-gnu/lib/librustc_llvm-4e7c5e5c.so: /usr/lib64/libstdc++.so.6: version `GLIBCXX_3.4.15' not found (required by /root/rust-nightly-x86_64-unknown-linux-gnu/lib/librustc_llvm-4e7c5e5c.so)
        linux-vdso.so.1 =>  (0x00007fff0d3fe000)
        librustrt-4e7c5e5c.so => not found
        libpthread.so.0 => /lib64/libpthread.so.0 (0x00007f7c32141000)
        libdl.so.2 => /lib64/libdl.so.2 (0x00007f7c31f3d000)
        libm.so.6 => /lib64/libm.so.6 (0x00007f7c31cb9000)
        libstdc++.so.6 => /usr/lib64/libstdc++.so.6 (0x00007f7c319b2000)
        libgcc_s.so.1 => /lib64/libgcc_s.so.1 (0x00007f7c3179c000)
        libc.so.6 => /lib64/libc.so.6 (0x00007f7c31408000)
        /lib64/ld-linux-x86-64.so.2 (0x00007f7c342a5000)
-bash-4.1# cat /etc/redhat-release 
CentOS release 6.5 (Final)
-bash-4.1# strings /usr/lib64/libstdc++.so.6 | grep GLIBC
GLIBCXX_3.4
GLIBCXX_3.4.1
GLIBCXX_3.4.2
GLIBCXX_3.4.3
GLIBCXX_3.4.4
GLIBCXX_3.4.5
GLIBCXX_3.4.6
GLIBCXX_3.4.7
GLIBCXX_3.4.8
GLIBCXX_3.4.9
GLIBCXX_3.4.10
GLIBCXX_3.4.11
GLIBCXX_3.4.12
GLIBCXX_3.4.13
GLIBC_2.2.5
GLIBC_2.3
GLIBC_2.4
GLIBC_2.3.2
GLIBCXX_FORCE_NEW
GLIBCXX_DEBUG_MESSAGE_LENGTH

[alexcrichton]

There can be some syncing problems with cloudfare and S3, you'll want to download from the host static-rust-lang-org.s3.amazonaws.com and rustc -v should print:

rustc 0.12.0-pre-nightly (0e784e168 2014-09-16 23:26:11 +0000)

[buster]

I can confirm that installing and running the nigthly rustc on CentOS 6.5 does work.
The resulting binary was running on another RHEL6 system just fine.

Thanks!

[alexcrichton]

Awesome, thanks for verifying!