1. Computers
  2. Display Drivers
  3. Graphics Cards
  4. Memory
  5. Motherboards
  6. Processors
  7. Software
  8. Storage
  9. Operating Systems


Facebook RSS Twitter Twitter Google Plus


Phoronix Test Suite

OpenBenchmarking.org

New GCC 5.0 Changes, Command-Line Options That Landed So Far

Compiler

Published on 26 August 2014 11:37 AM EDT
Written by Michael Larabel in Compiler
18 Comments

While we're just a few months into the GCC 4.10 release cycle that's going to be released as GCC 5, there's already some release notes forming for this 2015 open-source compiler update.

The GNU Compiler Collection 5 won't be released until sometime around early-to-mid 2015. In the months since the GCC 4.9 release there's been continued work on Link-Time Optimizations, Intel contributing its MIC runtime offloading library, and continued work towards C++14 support. Much more work is expected in the months ahead and we're still waiting to see GCC's OpenACC 2.0 support with a NVIDIA GPU back-end, support for upcoming Intel and AMD CPUs, more ARM/ARM64 optimizations, and much more.

Anyhow, the tentative GCC 5 release notes were updated this week to reflect some more of the developer-facing changes coming to this next release. You can find the tentative, in-development release notes for GCC 5.0 via the GNU.org documentation. Besides GCC's G++ now supporting C++14 variable templates, GCC for Fortran 2003 supporting the intrinsic IEEE modules, experimental support for Fortran 2008's co-arrays, and new parallel features in Fortran, there's a number of new command-line switches.

In GCC 5 the UndefinedBehaviorSanitizer is getting new sanitization options for floating-point division by zeros, a check to ensure floating-point type to integer conversions don't overflow, instrumentation of array bounds and out-of-bound access detection, and alignment checking for objects. These new sanitization options are exposed via various -fsanitize= values.

GCC 5's C family support also has a number of new command-line options for exposing additional compiler warnings: -Wswitch-bool, -Wlogical-not-parentheses, -Wsizeof-array-argument, and -Wbool-compare. For the C support is also new -Wc90-c99-compat, -Wc99-c11-compat, and -Wno-incompatible-pointer-types options.

Stay tuned for more GCC 5.0 coverage in the months ahead along with fresh compiler benchmarks on Phoronix.

About The Author
Michael Larabel is the principal author of Phoronix.com and founded the web-site in 2004 with a focus on enriching the Linux hardware experience and being the largest web-site devoted to Linux hardware reviews, particularly for products relevant to Linux gamers and enthusiasts but also commonly reviewing servers/workstations and embedded Linux devices. Michael has written more than 10,000 articles covering the state of Linux hardware support, Linux performance, graphics hardware drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated testing software. He can be followed via and or contacted via .
Latest Articles & Reviews
  1. Khronos Group Announces Vulkan, OpenCL 2.1, SPIR-V
  2. Samsung 850 EVO SSD Linux Benchmarks
  3. Kubuntu 15.04 Is Turning Out Quite Nice, Good Way To Try Out The Latest KDE
  4. 5-Way Linux Distribution Comparison On The Core i3 NUC
  5. OCZ ARC 100 Linux SSD Benchmarks
  6. Lenovo ThinkPad X1 Carbon Works Great As A Linux Ultrabook
Latest Linux News
  1. The Khronos Group's Vulkan, SPIR-V & OpenCL 2.1 Presentations
  2. Valve Developed An Intel Linux Vulkan GPU Driver
  3. Valve Starts Listing The Steam Machines In The Steam Store
  4. Ubuntu Will Start Booting With Systemd Next Monday
  5. A Brand New Linux Network Stack Proposed: Linux XIA
  6. Niche Drivers Get Ported To Atomic Mode-Setting For Linux 4.1
  7. openSUSE Tumbleweed Continues Ascending
  8. Open-Source SPIR-V Reader & Writer Written In Java
  9. LunarGLASS Adds Experimental SPIR-V Front-End
  10. The New Open-Source Linux Test Farm Is Almost Operational
Most Viewed News This Week
  1. Confirmed: Vulkan Is The Next-Gen Graphics API
  2. Xfce 4.12 Released After Nearly Three Years Of Work
  3. 8cc: A Small C11 Compiler
  4. Unreal Engine Made Free By Epic Games
  5. Canonical's Latest Demo Of Ubuntu Unity 8 Convergence In Action
  6. Mozilla Thunderbird Adoption Climbs, Thunderbird 38 In May
  7. VLC 2.2 "Weathermax" Brings Better VP9 & H.265 Support
  8. Features Coming For The Imminent Xfce 4.12 Release