Release Notes for the Advance Toolchain 9.0-4
Features in 9.0-4
- The Advance Toolchain is a self contained toolchain which isn't reliant on the base system toolchain.
- Base toolchain packages:
- GNU Binutils - 2.25-7586fe6 online docs
- Expat XML Parser - 2.1.0 online docs
- GCC (GNU Compiler Collection) - 5.3.1-236756 [C, C++ (g++), fortran, Go] online docs
- GNU Standard C++ Library v3 (Libstdc++-v3) - 5.3.1-236756 online docs
- GNU Libgomp - 5.3.1-236756 online docs
- GNU C Library - 2.22-e28b4381b04c online docs
- GNU Multiple Precision Library - 6.0.0-a online docs
- GNU MPC Library - 1.0.3 online docs
- GNU MPFR Library - 3.1.2-9243 online docs
- Additional support libraries, including some additional floating point support libraries:
- Libauxv - 1.1.0 online docs
- Decimal Floating Point C Library - 1.0.12-d86a8523 online docs
- Libhugetlbfs - 2.19-e80127e2 online docs
- Libvecpf - 1.1.0 online docs
- Open Secure Sockets Layer - 1.0.2j online docs
- IBM Power Architecture Facilities Library - 0.2.0-ffe6c00 online docs
- Python - 3.4.3 online docs
- TCMalloc - 2.4-689e4a5 online docs
- ZLIB Compression Library - 1.2.8 online docs
- Development tools:
- GDB (GNU Debugger) - 7.9.1-f045cba online docs
- Additional performance and debugging tools:
- Libpfm - 4.6.0-cbd838f7 online docs
- OProfile - 1.1.0-3a5515f with Java Support online docs
- Valgrind - 3.11.0 online docs
- Additional multi core support libraries:
- Boost - 1.58.0 online docs
- SPHDE - 1.1.0 online docs
- Userspace RCU - 0.8.8 online docs
- Thread Building Blocks - 4.3u6-20150611 online docs
- Golang:
- Golang - 1.6-9cdb20018d79 online docs
- POWER8 enablement.
- POWER8 Optimized scheduler.
- Requires at least POWER7.
- POWER8 Transactional Memory enablement.
- POWER8 Crypto Operations enablement.
- POWER8 Fusion enablement.
- POWER8 optimized system libraries.
- GCC creates binaries using --mcpu=power7 --mtune=power8 by default.
- Support for Go Programming Language.
- Support for split stack.
- Support for lock elision on glibc.
- GCC provides:
- Fix for eigen hitting ICE following invalid register assignment.
- Fix for vec_cts/vec_ctf intrinsics producing wrong results for 64-bit floating point.
- The GNU C Library provides:
- Fix for malloc list_lock/arena lock deadlock.
- Fix for CVE-2016-1234: buffer overflow with GLOB_ALTDIRFUNC.
- Fix for CVE-2016-3706: Stack overflow in hostent conversion.
- Fix for CVE-2016-4429: Stack overflow in Sun RPC clntudp_call.
- POWER8 optimized version of expf() and sinf().
- Fix missing hwcap strings.
- Valgrind provides a fix for missing support for W bit field on mtfsfi instruction.
- Boost provides 128 bytes of cache line for lockfree data structures.
- OpenSSL provides fix for CVE-2016-6309, CVE-2016-7052 and more 6 security advisories.
- Golang provides:
- Fix for EpollEvent struct incorrect for ppc64/ppc64le.
- Improved sqrt, xorBytes, Equal and memmove performance for ppc64/ppc64le.
- GCC provides:
- Fix for PowerPC ISA 2.07 is inefficient at doint (float)(int)x.
- Fix for wrong code generation in __sync_val_compare_and_swap on PowerPC.
- Fix for libatomic fails to build with -Os on powerpc64-linux.
- Fix swap optimization on powerpc64le.
- IEEE 128-bit floating point support.
- New constraint for ISA 3.0 (power9).
- Fix for an ICE in lra_set_insn_recog_data.
- Fix code generated on big-endian with -O1 -fexpensive-optimizations.
- --mcpu=powerpc64le pass -mpower8 to gas.
- The GNU C Library provides:
- Fix CVE-2015-7547: getaddrinfo() stack-based buffer overflow.
- Fix CVE-2015-8776: out of range data to strftime() causes a segfault.
- Fix CVE-2015-8779: Multiple unbounded stack allocations in catopen().
- Fix CVE-2016-3075: Stack overflow in _nss_dns_getnetbyname_r.
- Fix resource leak in resolver.
- Valgrind provides:
- Fix for 128-bit modulo and carry calculations.
- Itrace options added to dump address information for each DSO loaded into a file.
- Boost provides mem_cache_block lockfree.
- Support for lock elision on glibc.
- Script provided to help enable lock elision at runtime.
- OpenSSL provides fixes for CVE-2016-0701 and CVE-2015-3197.
- TCMalloc fixes an occasional deadlock on CEPH.
- Support for Debian 8.
- The GNU C Library provides a fix for TLE enabled pthread mutex performs poorly.
- Advance Toolchain GCC now provides the build id to the linker.
- OpenSSL provides 5 security advisories for CVE-2015-3193, CVE-2015-3194, CVE-2015-3195, CVE-2015-3196 and CVE-2015-1794.
- Expat provides a fix for CVE-2015-1283.
- Support for Fedora 22 ppc64le.
- GCC fix for HTM builtins aren't treated as compiler barriers on powerpc.
- The GNU C Library provides:
- libdfp fix for fabs() is rertuning wrong values for 128-bit type
- 32-bit Go libraries are no longer supported.
- Lock elision support was removed due some performance issues.
- New tools available on the cross-compiler: boost, tbb, libauxv, libdfp, libhugetlbfs, libsphde, liburcu, libvecpf, openssl, paflib, tcmalloc, zlib
- MPC provides:
- Fix for mpc_pow output at low precision (see discussion).
- Debuginfo packages provided separately.
- Binutils provides:
- Gold linker.
- Split stack support included.
- Support for lock elision on glibc.
-
The GNU C Library provides:
- Fixes for the following vulnerabilities: CVE-2015-1472/CVE-2015-1473 and CVE-2015-1781.
- Fix for pow() returning incorrect results when using FMA.
- OpenSSL provides 14 security advisories.
- Inclusion of Go tools.
New features in 9.0-4
Previous releases
New features in 9.0-3
New features in 9.0-2
New features in 9.0-1
New features in 9.0-0
New features in 8.0-4
Support
Customer support for the Advance Toolchain (AT) is provided in one of three ways:
- If you are using AT as directed by an IBM product team (ex.: IBM XL Compiler or PowerVM Lx86) please report suspected AT problems to IBM Support using that product name and entitlement.
- IBM's Support Line for Linux Offerings now provides support for the Advance Toolchain as well. If you have a contract with a Support Line for Linux, place a call to IBM Support, e.g. for United States:
- Dial 1-800-426-IBM-SERV
- Option #2 (Other business products or solutions)
- Option #2 (Software)
- Option #7 (Other OS/Linux)
- All other users can use an electronic forum that is monitored Monday through Friday. For questions regarding the use of or to report a suspected defect in AT, click here.
- Log in.
- Start a topic.
- Enter and save your question or problem.
- An initial response will be attempted within 2 business days.
Installation
The gpg public key(s) gpg-pubkey-6976a827-5164221b will be provided in the repository where these release notes were found. The pubkey(s) can be used to verify the authenticity of both the Advance Toolchain install packages and the repository contents. After downloading the gpg-pubkey(s) they can be imported as follows:
rpm --import gpg-pubkey-6976a827-5164221b
Using YUM or DNF
First, if you have never created an Advance Toolchain repository configuration file, you need to do so. Create the following file using the text editor of your choice as root:
/etc/yum.repos.d/at9.0.repo
and add the following content:
# Begin of configuration file [at9.0] name=Advance Toolchain Unicamp FTP baseurl=ftp://ftp.unicamp.br/pub/linuxpatch/toolchain/at/redhat/Fedora22 failovermethod=priority enabled=1 gpgcheck=1 gpgkey=ftp://ftp.unicamp.br/pub/linuxpatch/toolchain/at/redhat/Fedora22/gpg-pubkey-6976a827-5164221b # End of configuration file
To install execute yum install as root:
yum install advance-toolchain-at9.0-runtime / advance-toolchain-at9.0-devel / advance-toolchain-at9.0-perf
Answer y when YUM prompts for confirmation.
Manual installation for rpms
If you are installing the rpms manually you will need to install them in the following order (due to prerequisites):
advance-toolchain-at9.0-runtime-9.0-4 advance-toolchain-at9.0-devel-9.0-4 advance-toolchain-at9.0-perf-9.0-4 advance-toolchain-at9.0-mcore-libs-9.0-4 advance-toolchain-at9.0-runtime-at8.0-compat-9.0-4
If you are updating a previous installation, you need to update as a batch, so rpm can solve the dependencies, i.e.:
rpm -Uvh advance-toolchain-at9.0-runtime-9.0-4.ppc64.rpm \ advance-toolchain-at9.0-devel-9.0-4.ppc64.rpm \ advance-toolchain-at9.0-perf-9.0-4.ppc64.rpm \ advance-toolchain-at9.0-mcore-9.0-4.ppc64.rpm \ advance-toolchain-at9.0-runtime-at8.0-compat-9.0-4.ppc64.rpm
The rpm command should always be run as root. Failure to do so will result in an error similar to this:
error: can't create transaction lock on /var/lib/rpm/__db.000
Important notes
- Timezone files: If you need to use something different than Factory, then you should copy the timezone file you want from /opt/at9.0/share/zoneinfo to /opt/at9.0/etc/localtime
- advance-toolchain-at9.0-runtime-compat-9.0-4: DO NOT INSTALL it on RHEL7 and beyond. These are intended for runtime compatibility on RHEL6 only (see below).
Installation for runtime compatibility on previous distribution versions
Users running applications on previous distributions of SLES or RHEL may install the compatibility rpm advance-toolchain-at9.0-runtime-compat-9.0-4 in order to get the Advance Toolchain runtime libraries.
Installation of the cross-compiler (x86)
You can download advance-toolchain-at9.0-cross-9.0-4 and install in a x86 machine to build Power binaries on it. Binaries generated by the cross-compiler will run on a Power system with the same version of the Advance Toolchain installed.
back to topDocumentation
The official documentation for the Advance Toolchain is available at the IBM Power Linux Community website.
back to topLegal notices
Each component of Advance Toolchain has its own license, they are all covered by this list:
- LGPL 2.1: https://www.gnu.org/licenses/old-licenses/lgpl-2.1.en.html
- GPL 2.0: https://www.gnu.org/licenses/old-licenses/gpl-2.0.en.html
- GPL 3.0: https://www.gnu.org/licenses/gpl-3.0.en.html
- MIT
- BSD
- PYTHON SOFTWARE FOUNDATION LICENSE VERSION 2
- Boost Software License 1.0
- Eclipse Public License (EPL) 1.0
- Zlib
The licenses for each GPL and LGPL code segment can be found in the advance-toolchain-at9.0-src-9.0-4.tgz file in the repository, the others are listed below.
In order to comply with the GPL and LGPL licenses, the source code for the following packages is available:
- binutils (GPL 2.0)
- gcc (GPL 3.0)
- gdb (GPL 2.0)
- glibc (LGPL 2.1)
- gmp (GPL 3.0)
- Threading Building Blocks (GPL 2.0)
- libdfp (LGPL 2.1)
- libhugetlbfs (LGPL 2.1)
- libvecpf (LGPL 2.1)
- linux kernel (GPL 2.0)
- mpc (GPL 3.0)
- mpfr (GPL 3.0)
- oprofile (GPL 2.0)
- Userspace RCU (LGPL 2.1)
- Valgrind (GPL 2.0)
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