GNU Tools for ARM Embedded Processors

GCC ARM Embedded 4.7-2012-q4-major

The first 4.7 release

Milestone information

Project:
GCC ARM Embedded
Series:
4.7
Version:
4.7-2012-q4-major
Released:
2012-12-24  
Registrant:
Terry Guo
Release registered:
2012-12-24
Active:
Yes. Drivers can target bugs and blueprints to this milestone.  

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download icon gcc-arm-none-eabi-4_7-2012q4-20121208-win32.exe (md5) Windows installer 19,639
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download icon gcc-arm-none-eabi-4_7-2012q4-20121208-linux.tar.bz2 (md5) Linux installation tarball 12,493
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Total downloads: 48,740

Release notes 

*************************************************
GNU Tools for ARM Embedded Processors 4.7
                               - Dec 2012
*************************************************

This release includes the following items:
* Bare metal EABI pre-built binaries for running on a Windows host
* Bare metal EABI pre-built binaries for running on a Linux host
* Bare metal EABI pre-built binaries for running on a Mac OS X host
* Source code package (together with build scripts and instructions to setup
  build environment), composed of:
  * gcc : ARM/embedded-4_7-branch revision 194305
    http://gcc.gnu.org/svn/gcc/branches/ARM/embedded-4_7-branch/

  * binutils : 2.22 with mainline backports
    git://sourceware.org/git/binutils.git commit 8f0e6ebede51788f429937646e891633a20dc533

  * newlib : 1.19 with mainline backports
    ftp://sources.redhat.com/pub/newlib/newlib-1.19.0.tar.gz

  * gdb : 7.4.1 with mainline backports, without target sim support
    git://sourceware.org/git/gdb.git commit 263dc2d4afef8873f4262257f372af9fade55d94

  * cloog-ppl 0.15.11 :
    ftp://gcc.gnu.org/pub/gcc/infrastructure/cloog-ppl-0.15.11.tar.gz

  * expat 2.0.1 :
    http://jaist.dl.sourceforge.net/project/expat/expat/2.0.1/expat-2.0.1.tar.gz

  * gmp 4.3.2 : ftp://gcc.gnu.org/pub/gcc/infrastructure/gmp-4.3.2.tar.bz2

  * libelf 0.8.13 : http://www.mr511.de/software/libelf-0.8.13.tar.gz

  * libiconv 1.11.1 :
    http://ftp.gnu.org/pub/gnu/libiconv/libiconv-1.11.1.tar.gz

  * mpc 0.8.1 : ftp://gcc.gnu.org/pub/gcc/infrastructure/mpc-0.8.1.tar.gz

  * mpfr 2.4.2 : ftp://gcc.gnu.org/pub/gcc/infrastructure/mpfr-2.4.2.tar.bz2

  * ppl 0.11 : ftp://gcc.gnu.org/pub/gcc/infrastructure/ppl-0.11.tar.gz

  * zlib 1.2.5 with makefile patch :
    http://sourceforge.net/projects/libpng/files/zlib/1.2.5/zlib-1.2.5.tar.bz2/download

  * newlib-nano 1.0 : Included in source package

Supported hosts:
* Windows XP/7 32/64 bits (with installer)
* Linux 32/64 bits (tarball)
  - Ubuntu 8.x or later
  - RHEL 4/5
* Mac OS X 64 bits (tarball)

Supported target OS:
* Bare metal EABI only

Features:
* All GCC 4.7 features, plus latest mainline features
  - Defaultly turn on option -munaligned-access for ARM
  - Support for more features from C11 revision of ISO C
  - Support various new GNU extensions to the DWARF
* Additional code size optimizations
* Cortex-M0+ support
* Newlib-nano: newlib branch optimized for code size
* GDB support of unwind from exception handler
* GDB support of FP registers in Cortex-M4

Tests:
* Tested on a variety of Cortex-M0/M0+/M3/M4 boards
* Tested on Qemu

Known issues in 4.7 major 2012.12 release:
* Comparing to 4.6, GCC 4.7 tends to inline more function calls when
  optimizing for speed (O2/O3). So program built from 4.7 with O2/O3
  might be slightly bigger than 4.6, but usually with performance gain.
  To fall back closer to 4.6 behavior, please include compiler option:
  --param early-inlining-insns=10

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