Chapter 10. Compiler and Tools
Chapter 10. Compiler and Tools 10.1. GCC Toolchain In Red Hat Enterprise Linux 7, the gcc toolchain is based on the gcc-4.8.x release series, and includes numerous enhancements and bug fixes relative to the Red Hat Enterprise Linux 6 equivalent. Similarly, Red Hat Enterprise Linux 7 includes binutils-2.23.52.x . These versions correspond to the equivalent tools in Red Hat Developer Toolset 2.1; a detailed comparison of Red Hat Enterprise Linux 6 and Red Hat Enterprise Linux 7 gcc and binutils versions can be seen here: https://access.redhat.com/site/documentation/en-US/Red_Hat_Developer_Toolset/2/html/User_Guide/index.html Notable highlights of the Red Hat Enterprise Linux 7 toolchain are the following: As a Technology Preview, The GNU Compiler Collection ( GCC ) implements support for on-line patching of multi-threaded code for Linux on System z binaries. Selecting specific functions for hot-patching is enabled by using a "function attribute" and hot-patching for all functions can be enabled using the -mhotpatch command-line option. Enabling hot-patching has a negative impact on software size and performance. It is therefore recommended to use hot-patching for specific functions instead of enabling hot patch support for all functions. Experimental support for building applications compliant with C++11 (including full C++11 language support) and some experimental support for C11 features; Improved support for programming parallel applications, including OpenMP v3.1, C++11 Types and GCC Built-ins for Atomic Memory Access and experimental support for transactional memory (including Intel RTM/HLE intrinsics, built-ins, and code generation); A new local register allocator (LRA), improving code performance; DWARF4 is now used as the default debug format; A variety of new architecture-specific options; Support for AMD family 15h and 16h processors; Link-time optimization support; Enhanced warnings and diagnostics; A variety of new Fortran features.