6.1 Release Notes - Red Hat Customer Portal

Red Hat Developer Toolset 6.x
6.1 Release Notes
Release Notes for Red Hat Developer Toolset 6.1
Last Updated: 2017-10-11
Red Hat Developer Toolset 6.x 6.1 Release Notes
Release Notes for Red Hat Developer Toolset 6.1
Lenka Špačková
Red Hat Customer Content Services
lspackova@redhat.com
Jaromír Hradílek
Red Hat Customer Content Services
jhradilek@redhat.com
Eliška Slobodová
Red Hat Customer Content Services
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Abstract
Red Hat Developer Toolset is a Software Collection from the Red Hat Software Collections
offering. It is designed for developers working on the Red Hat Enterprise Linux platform. Using a
framework called Software Collections, an additional set of tools is installed into the /opt/
directory, as recommended by the UNIX Filesystem Hierarchy Standard. These tools are enabled
by the user on demand using the supplied scl utility. Red Hat Developer Toolset 6.1 provides
current versions of the GNU Compiler Collection, GNU Debugger, and other development,
debugging, and performance monitoring tools. These do not replace the Red Hat Enterprise Linux
system versions of these tools, nor will they be used in preference to those system versions unless
explicitly invoked using the scl utility. These Release Notes contain important information
available at the time of release of Red Hat Developer Toolset 6.1. Known problems, resources, and
other issues are discussed here. Read this document before beginning to use Red Hat Developer
Toolset 6.1. For information on other components of Red Hat Software Collections, see the Red
Hat Software Collections Release Notes. For details about length of support for individual
components, refer to the Red Hat Software Collections Product Life Cycle document.
Table of Contents
Table of Contents
.CHAPTER
. . . . . . . . . . 1.
. . .SYSTEM
. . . . . . . . .REQUIREMENTS
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3. . . . . . . . . . . .
1.1. INSTALLATION PREREQUISITES
3
1.2. INSTALLATION AND UPGRADING
4
.CHAPTER
. . . . . . . . . . 2.
. . .RED
. . . . .HAT
. . . . .DEVELOPER
. . . . . . . . . . . . . TOOLSET
. . . . . . . . . . .6.1
. . .RELEASE
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5. . . . . . . . . . . .
2.1. CHANGES IN RED HAT DEVELOPER TOOLSET 6.1
5
2.1.1. Upgraded Components
5
2.1.2. Container Images
5
2.2. FEATURES
6
2.2.1. List of Components
6
2.2.2. Main Features
6
2.3. KNOWN ISSUES
7
Other Notes
8
.CHAPTER
. . . . . . . . . . 3.
. . ADDITIONAL
. . . . . . . . . . . . . . RESOURCES
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
.............
3.1. RED HAT PRODUCT DOCUMENTATION
12
3.2. RED HAT DEVELOPER BLOG
12
3.3. RED HAT DEVELOPERS PORTAL
12
. . . . . . . . . . . . A.
APPENDIX
. . .REVISION
. . . . . . . . . . HISTORY
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
.............
1
6.1 Release Notes
2
CHAPTER 1. SYSTEM REQUIREMENTS
CHAPTER 1. SYSTEM REQUIREMENTS
This chapter specifies hardware requirements and contains information related to the installation of
Red Hat Developer Toolset 6.1.
1.1. INSTALLATION PREREQUISITES
Red Hat Developer Toolset 6.1 contains packages for both Red Hat Enterprise Linux 6 and Red Hat
Enterprise Linux 7 running on AMD64 and Intel 64 architectures. Generation and manipulation of 32bit binaries is also supported.
Red Hat Developer Toolset 6.1 supports the following architectures on Red Hat Enterprise Linux 7:
The 64-bit ARM architecture (AArch64)
IBM POWER, big endian
IBM POWER, little endian
IBM z Systems
The correct packages must be installed according to the host operating system in use. Red Hat
Enterprise Linux 6 RPM packages can be used only on supported versions of Red Hat
Enterprise Linux 6, and Red Hat Enterprise Linux 7 RPM packages can be used only on supported
versions of Red Hat Enterprise Linux 7.
Before installing Red Hat Developer Toolset 6.1, it is recommended to apply all available Red Hat
Enterprise Linux errata updates. This will enable all Red Hat Developer Toolset features and apply fixes
that can otherwise impact the tools or built code.
Red Hat Developer Toolset 6.1 requires systems to be subscribed to the Optional channel in order to
access all the necessary dependent packages required by the Red Hat Developer Toolset toolchain.
Packages from the Optional channel are listed in the Red Hat Software Collections 2.4 Release
Notes.
If you use Red Hat Subscription Manager:
On Red Hat Enterprise Linux 6, select System → Administration → Add/Remove Software
from the panel and navigate to System → Software Sources.
On Red Hat Enterprise Linux 7, you can add these repositories by navigating to Applications →
System Tools → Red Hat Subscription Manager .
Then enable the Optional channel for your system. For detailed information, see
https://access.redhat.com/solutions/392003.
Users of RHN Classic or Red Hat Satellite can enable the Optional channel by following the
instructions at https://access.redhat.com/solutions/70019.
Since Red Hat Developer Toolset 4.1, the content is available also in the ISO format at
https://access.redhat.com/downloads, specifically for Server and Workstation.
3
6.1 Release Notes
NOTE
Packages that require the Optional channel cannot be installed from the ISO image. A
list of packages that require enabling of the Optional channel is provided in the
Red Hat Software Collections Release Notes.
Beta content is unavailable in the ISO format.
1.2. INSTALLATION AND UPGRADING
Use of Red Hat Developer Toolset 6.1 requires the removal of any earlier pre-release versions, including
Beta releases. If you have installed any previous version of Red Hat Developer Toolset, uninstall it from
your system as described in the Uninstalling Red Hat Developer Toolset section of the Red Hat
Developer Toolset User Guide.
Note that installing Red Hat Developer Toolset 6.x in parallel with Red Hat Developer Toolset 4.x is
supported.
For detailed information on installation of Red Hat Developer Toolset 6.1 see the Installing Red Hat
Developer Toolset chapter of the Red Hat Developer Toolset User Guide.
The in-place upgrade from Red Hat Enterprise Linux 6 to Red Hat Enterprise Linux 7 is not supported
by Red Hat Developer Toolset. As a consequence, the installed components might not work correctly
after the upgrade. If you want to upgrade from Red Hat Enterprise Linux 6 to Red Hat
Enterprise Linux 7, it is strongly recommended to remove all Red Hat Developer Toolset packages,
perform the in-place upgrade, update the Red Hat Developer Toolset repository, and install the
Red Hat Developer Toolset packages again. It is advisable to back up all data before upgrading.
4
CHAPTER 2. RED HAT DEVELOPER TOOLSET 6.1 RELEASE
CHAPTER 2. RED HAT DEVELOPER TOOLSET 6.1 RELEASE
This chapter serves as an overview of Red Hat Developer Toolset 6.1. It sums up its main features and
changes, and provides a list of known issues.
2.1. CHANGES IN RED HAT DEVELOPER TOOLSET 6.1
2.1.1. Upgraded Components
All components in Red Hat Developer Toolset 6.1 are shipped with the devtoolset-6- prefix.
The following components have been upgraded in Red Hat Developer Toolset 6.1 compared to the
previous release of Red Hat Developer Toolset:
GCC to version 6.3.1
elfutils to version 0.168
GDB to version 7.12.1
Additionally, a bug fix update is available for ltrace.
For detailed information on changes in Red Hat Developer Toolset 6.1, see Red Hat Developer Toolset
User Guide.
NOTE
The Eclipse component is shipped as a separate rh-eclipse46 Software Collection for
Red Hat Enterprise Linux 7. For details, see the Red Hat Software Collections Release
Notes.
2.1.2. Container Images
Red Hat Developer Toolset 6.1 includes two pre-built docker-formatted container images:
The rhscl/devtoolset-6-toolchain-rhel7 image, which contains the following Red Hat
Developer Toolset components:
devtoolset-6-gcc
devtoolset-6-gcc-c++
devtoolset-6-gcc-fortran
devtoolset-6-gdb
The rhscl/devtoolset-6-perftools-rhel7 image, which contains the following
components:
devtoolset-6-oprofile
devtoolset-6-systemtap
devtoolset-6-valgrind
5
6.1 Release Notes
devtoolset-6-dyninst
devtoolset-6-elfutils
The container images are available from the Red Hat Container Registry. For details on how to obtain
the images and how to run Red Hat Developer Toolset components using these images, see Using Red
Hat Software Collections Container Images.
2.2. FEATURES
2.2.1. List of Components
Red Hat Developer Toolset 6.1 provides the following components:
Development Tools
GNU Compiler Collection (GCC)
binutils
elfutils
dwz
make
Debugging Tools
GNU Debugger (GDB)
strace
ltrace
memstomp
Performance Monitoring Tools
SystemTap
Valgrind
OProfile
Dyninst
For details, see the Red Hat Developer Toolset Components table in the Red Hat Developer Toolset User
Guide.
2.2.2. Main Features
The Red Hat Developer Toolset 6.1 brings the following changes:
Red Hat Developer Toolset 6.1 adds support for Red Hat Enterprise Linux 6.9.
6
CHAPTER 2. RED HAT DEVELOPER TOOLSET 6.1 RELEASE
The Red Hat Developer Toolset version of the GNU Compiler Collection (GCC) has been
upgraded to version 6.3.1 with many bug fixes.
The version of the GNU Debugger (GDB) included in Red Hat Developer Toolset provides
several bug fixes.
The eu-readelf utility from package elfutils now allows showing just the symbol table of the
given ELF section name instead of symbols from all symbol tables.
For a full list of changes and features introduced in this release, see Red Hat Developer Toolset User
Guide.
2.3. KNOWN ISSUES
gcc component, BZ# 1433946
GCC in Red Hat Developer Toolset 3.x contained the libasan package, which might have conflicted
with the system version of libasan. As a consequence, depending on which libasan was present in
the system, the -fsanitize=address tool worked only either with the system GCC or with the
Red Hat Developer Toolset version of GCC, but not with both at the same time. To prevent the
described conflict, in Red Hat Developer Toolset 4.x and later versions, the package was renamed
to libasanN, where N is a number. However, if the Red Hat Software Collections repository is
enabled, the problem can occur after the system update because the system version of libasan is
available in an earlier version than the Red Hat Developer Toolset 3.x version, which is still available
in the repository. To work around this problem, exclude this package while updating:
~]$ yum update --exclude=libasan
gcc component, BZ# 1378332
The libatomic library is unavailable for the 64-bit ARM architecture on Red Hat
Enterprise Linux 7.2 and earlier versions. As a consequence, the devtoolset-6-libatomic-devel
package cannot be installed on such systems. In Red Hat Enterprise Linux 7.3, the libatomic
package for the 64-bit ARM architecture is shipped in the gcc-libraries package.
oprofile component
OProfile 1.1.0 shipped in Red Hat Developer Toolset 6.1 works on all supported architectures, with
the exception of IBM z Systems, where only the ocount tool works on the following models: z196,
zEC12, and z13. operf and the other tools, such as oparchive or opannotate, do not work on IBM z
Systems. For profiling purposes, users are recommended to use the Red Hat Enterprise Linux 7
system OProfile 0.9.9 version, which supports opcontrol with TIMER software interrupts.
Note that for correct reporting of data collected by OProfile 0.9.9, the corresponding opreport
utility is necessary. Thus opcontrol-based profiling should be performed with Red Hat
Developer Toolset disabled because the reporting tools from Red Hat Developer Toolset cannot
process data collected within opcontrol legacy mode correctly.
valgrind component, BZ# 869184
The default Valgrind gdbserver support ( --vgdb=yes) can cause certain register and flags values
to be not always up-to-date due to optimizations done by the Valgrind core. The GDB utility is
therefore unable to show certain parameters or variables of programs running under Valgrind. To
work around this problem, use the --vgdb=full parameter. Note that programs might run slower
under Valgrind when this parameter is used.
7
6.1 Release Notes
valgrind component, BZ# 990931
Valgrind must be rebuilt without Red Hat Developer Toolset's GCC installed, or it will be used in
preference to Red Hat Enterprise Linux system GCC. The binary files shipped by Red Hat are build
using the system GCC. For any testing, Red Hat Developer Toolset's GDB should be used.
multiple components
The devtoolset-6-package_name-debuginfo packages can conflict with the corresponding packages
from the base Red Hat Enterprise Linux system or from other versions of Red Hat
Developer Toolset. This namely applies to devtoolset-6-gcc-debuginfo, devtoolset-6-ltracedebuginfo, devtoolset-6-valgrind-debuginfo, and might apply to other debuginfo packages, too. A
similar conflict can also occur in a multilib environment, where 64-bit debuginfo packages conflict
with 32-bit debuginfo packages.
For example, on Red Hat Enterprise Linux 7, devtoolset-6-gcc-debuginfo conflicts with three
packages: gcc-base-debuginfo, gcc-debuginfo, and gcc-libraries-debuginfo. On Red Hat
Enterprise Linux 6, devtoolset-6-gcc-debuginfo conflicts with one package: gcc-librariesdebuginfo. As a consequence, if conflicting debuginfo packages are installed, attempts to install
Red Hat Developer Toolset 6.1 can fail with a transaction check error message similar to the
following examples:
file /usr/lib/debug/usr/lib64/libitm.so.1.0.0.debug from install of gccbase-debuginfo-4.8.3-9.el7.x86_64 conflicts with file from package
devtoolset-6-gcc-debuginfo-6.2.1-2.el7.x86_64
file /usr/lib/debug/usr/lib64/libtsan.so.0.0.0.debug from install of
gcc-debuginfo-4.8.3-9.el7.x86_64 conflicts with file from package
devtoolset-6-gcc-debuginfo-6.2.1-2.el7.x86_64
file /usr/src/debug/gcc-5.2.1-20150716/obj-x86_64-redhat-linux/x86_64redhat-linux/libstdc++-v3/include/x86_64-redhat-linux/bits/c++config.h
from install of gcc-libraries-debuginfo-5.2.1-2.1.el7.x86_64 conflicts
with file from package devtoolset-6-gcc-debuginfo-6.2.1-2.el7.x86_64
file /usr/lib/debug/usr/lib64/libcilkrts.so.5.0.0.debug from install of
gcc-libraries-debuginfo-4.9.0-6.1.1.el6.x86_64 conflicts with file from
package devtoolset-6-gcc-debuginfo-6.2.1-2.el7.x86_64
To work around the problem, manually uninstall the conflicting debuginfo packages prior to
installing Red Hat Developer Toolset 6.1. It is advisable to install only the relevant debuginfo
packages when necessary and expect such problems to happen.
Other Notes
Red Hat Developer Toolset primarily aims to provide a compiler for development of user
applications for deployment on multiple versions of Red Hat Enterprise Linux. Operating
system components, kernel modules and device drivers generally correspond to a specific
version of Red Hat Enterprise Linux, for which the supplied base OS compiler is recommended.
Red Hat Developer Toolset 6.1 supports only C, C++ and Fortran development. For other
languages, invoke the system version of GCC available on Red Hat Enterprise Linux.
Building an application with Red Hat Developer Toolset 6.1 on Red Hat Enterprise Linux (for
example, Red Hat Enterprise Linux 7) and then executing that application on an earlier minor
8
CHAPTER 2. RED HAT DEVELOPER TOOLSET 6.1 RELEASE
version (such as Red Hat Enterprise Linux 6.6.z) may result in runtime errors due to
differences in non-toolchain components between Red Hat Enterprise Linux releases. Users
are advised to check compatibility carefully. Red Hat supports only execution of an application
built with Red Hat Developer Toolset on the same, or a later, supported release of Red Hat
Enterprise Linux than the version used to build that application.
All code in the non-shared library libstdc++_nonshared.a in Red Hat
Developer Toolset 6.1 is licensed under the GNU General Public License v3 with additional
permissions granted under Section 7, described in the GCC Runtime Library Exception version
3.1, as published by the Free Software Foundation.
The compiler included in Red Hat Developer Toolset emits newer DWARF debugging records
than previous compilers available on Red Hat Enterprise Linux. These new debugging records
improve the debugging experience in a variety of ways, particularly for C++ and optimized
code. However, certain tools are not yet capable of handling the newer DWARF debug
records. To generate the older style debugging records, use the options -gdwarf-2 gstrict-dwarf or -gdwarf-3 -gstrict-dwarf.
Some newer library features are statically linked into applications built with Red Hat
Developer Toolset to support execution on multiple versions of Red Hat Enterprise Linux. This
adds a small additional security risk because regular Red Hat Enterprise Linux errata would
not change this code. If the need for developers to rebuild their applications due to such an
issue arises, Red Hat will signal this in a security erratum. Developers are strongly advised not
to statically link their entire application for the same reasons.
Note that error messages related to a missing libitm library when using the -fgnu-tm option
require the libitm package to be installed. You can install the package with the following
command:
yum install libitm
To use the ccache utility with GCC included in Red Hat Developer Toolset, set your
environment correctly. For example:
~]$ scl enable devtoolset-6 '/usr/lib64/ccache/gcc -c foo.c'
Alternatively, you can create a shell with the Red Hat Developer Toolset version of GCC as the
default compiler:
~]$ scl enable devtoolset-6 'bash'
After you have created the shell, run the following two commands:
~]$ export PATH=/usr/lib64/ccache${PATH:+:${PATH}}
~]$ gcc -c foo.c
Because the elfutils libraries contained in Red Hat Developer Toolset 6.1 are linked to a client
application statically, caution is advised when passing handles to libelf, libdw, and libasm
data structures to external code and when passing handles received from external code to
libelf, libdw, and libasm.
9
6.1 Release Notes
Be especially careful when an external library, which is linked dynamically against the system
version of elfutils, is passed a pointer to a structure that comes from the Red Hat
Developer Toolset 6.1 version of elfutils (or vice versa).
Generally, data structures used in the Red Hat Developer Toolset 6.1 version of elfutils are not
compatible with the Red Hat Enterprise Linux system versions, and structures coming from
one should never be touched by the other.
In applications that use the Red Hat Developer Toolset 6.1 libraries, all code that was linked
against the system version of the libraries should be recompiled against the libraries included
in Red Hat Developer Toolset 6.1.
The elfutils EBL library, which is used internally by libdw, was amended not to open back
ends dynamically. Instead, a selection of back ends is compiled in the library itself: the 32-bit
AMD and Intel architecture, AMD64 and Intel 64 systems, Intel Itanium, IBM z Systems, 32-bit
IBM Power Systems, 64-bit IBM Power Systems, IBM POWER, big endian, and the 64-bit ARM
architecture. Some functionality may not be available if the client wishes to work with ELF files
from architectures other than those mentioned above.
Some packages managed by the scl utility include privileged services that require sudo. The
system sudo clears environment variables and so Red Hat Developer Toolset includes its own
sudo shell script, wrapping scl enable. This script does not currently parse or pass normal
sudo options, only sudo COMMAND ARGS .... In order to use the system version of sudo
from within a Red Hat Developer Toolset-enabled shell, use the /usr/bin/sudo binary.
Red Hat Developer Toolset 6.1 includes GCC 6.2, which provides support for Cilk+, an
extension to the C and C++ languages for parallel programming. A runtime library,
libcilkrts, is included in this release to support the feature. The libcilkrts library will be
a part of the gcc-libraries package in the future Red Hat Enterprise Linux releases but the
package is not included in all supported Red Hat Enterprise Linux releases. To enable dynamic
linkage of binaries and libraries built with Red Hat Developer Toolset 6.1 GCC using Cilk+
features on supported Red Hat Enterprise Linux releases that do not contain libcilkrts,
install the libcilkrts.so shared library from Red Hat Developer Toolset 6.1 with such
binaries or libraries.
Intel have issued erratum HSW136 concerning TSX (Transactional Synchronization Extensions)
instructions. Under certain circumstances, software using the Intel TSX instructions may result
in unpredictable behavior. TSX instructions may be executed by applications built with
Red Hat Developer Toolset GCC under certain conditions. These include use of GCC's
experimental Transactional Memory support (using the -fgnu-tm option) when executed on
hardware with TSX instructions enabled. The users of Red Hat Developer Toolset are advised
to exercise further caution when experimenting with Transaction Memory at this time, or to
disable TSX instructions by applying an appropriate hardware or firmware update.
To use the Memory Protection Extensions (MPX) feature in GCC, the Red Hat
Developer Toolset version of the libmpx library is required, otherwise the application might
not link properly.
The two binutils linkers, gold and ld, have different ways of handling hidden symbols, which
leads to incompatibilities in their behavior. Previously, the gold and ld linkers had
inconsistent and incorrect behavior with regard to shared libraries and hidden symbols. There
were two scenarios:
If a shared library referenced a symbol that existed elsewhere in both hidden and nonhidden versions, the gold linker produced a bogus warning message about the hidden
version.
10
CHAPTER 2. RED HAT DEVELOPER TOOLSET 6.1 RELEASE
If a shared library referenced a symbol that existed elsewhere only as a hidden symbol, the
gold linker created an executable, even though it could not work.
The gold linker has been updated so that it no longer issues bogus warning messages about
hidden symbols that also exist in a non-hidden version. The second scenario cannot be solved
in the linker. It is up to the programmer to ensure that a non-hidden version of the symbol is
available when the application is run.
As a result, the two linkers' behavior is closer, but they still differ in case of a reference to a
hidden symbol that cannot be found elsewhere in a non-hidden version. Unfortunately, there is
not a single correct behavior for this situation, so the linkers are allowed to differ.
The valgrind-openmpi subpackage is no longer provided with Valgrind in Red Hat
Developer Toolset. The devtoolset-<version>-valgrind-openmpi subpackages previously
caused incompatibility issues with various Red Hat Enterprise Linux minor releases and
problems with rebuilding. Users are recommended to use the latest Red Hat Enterprise Linux
system version of the valgrind and valgrind-openmpi packages if they need to run Valgrind
against their programs that are built against the openmpi-devel libraries.
11
6.1 Release Notes
CHAPTER 3. ADDITIONAL RESOURCES
For more information about Red Hat Developer Toolset 6.1 and Red Hat Enterprise Linux, see the
resources listed below.
3.1. RED HAT PRODUCT DOCUMENTATION
The Red Hat Documentation portal located at https://access.redhat.com/documentation/ serves as a
central source of all product documentation. It is translated in 22 languages and for each product, it
provides different kinds of books from release and technical notes to installation, user, and reference
guides in HTML, PDF, and EPUB formats.
The following is a brief list of documents that are directly or indirectly relevant to this book:
Red Hat Developer Toolset 6.1 User Guide — The User Guide for Red Hat Developer Toolset
contains more information about installing and using this content set.
Red Hat Software Collections 2.4 Packaging Guide — The Packaging Guide for Red Hat
Software Collections explains the concept of Software Collections, documents the scl utility,
and provides a detailed explanation of how to create a custom Software Collection or extend
an existing one.
Red Hat Software Collections 2.4 Release Notes — The Release Notes for Red Hat
Software Collections document known problems, possible issues, and other important
information available at the time of release of the content set. They also contain useful
information on installing, rebuilding, migrating etc.
Using Red Hat Software Collections Container Images — This book provides information on how
to use container images based on Red Hat Software Collections. The available container
images include applications, daemons, databases, as well as the Red Hat Developer Toolset
container images. The images can be run on Red Hat Enterprise Linux 7 Server and Red Hat
Enterprise Linux Atomic Host.
Red Hat Enterprise Linux 6 Developer Guide — The Developer Guide for Red Hat
Enterprise Linux 6 provides detailed information on compiling and building, debugging, and
profiling.
Red Hat Enterprise Linux 7 Developer Guide — The Developer Guide for Red Hat
Enterprise Linux 7 provides an introduction to application development tools in Red Hat
Enterprise Linux 7.
3.2. RED HAT DEVELOPER BLOG
Red Hat Developer Blog content is directed to designers and developers of applications based on
Red Hat technologies. It contains links to product team blogs and other relevant internal and external
resources. Its goal is to inform and engage the developer community with up-to-date information, best
practices, opinion, product and program announcements as well as pointers to sample code and other
resources.
3.3. RED HAT DEVELOPERS PORTAL
Red Hat Developers Portal provides an overview of Red Hat Developer Toolset and offers getting
started content, including Hello world! examples.
12
APPENDIX A. REVISION HISTORY
APPENDIX A. REVISION HISTORY
Revision 6.1-5
Wed Apr 26 2017
Lenka Špačková
Release of Red Hat Developer Toolset 6.1 Release Notes.
Revision 6.1-4
Wed Apr 05 2017
Lenka Špačková
Release of Red Hat Developer Toolset 6.1 Beta Release Notes.
13
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