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GNU Toolchain for ARC Processors, 2021.03-rc1

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@falaleevms falaleevms released this 12 Apr 07:56
· 433 commits to arc-releases since this release
arc-2021.03-rc1
96dee73

This is the first release candidate of 2021.03 version of the GNU Toolchain for DesignWare ARC Processors.

GNU Documentation PDF files can be found in share/doc directory of installed toolchain, as well as online here https://foss-for-synopsys-dwc-arc-processors.github.io/toolchain.

A list of useful how-to instructions can also be found on the GNU Toolchain for DesignWare ARC Processors Documentation wiki.

Toolchain and IDE Components Versions

  • Binutils 2.36.1 with ARC patches
  • GCC 10.2 with ARC patches
  • GDB 10.1 with ARC patches
  • newlib 3.2.0 with ARC patches
  • uClibc-ng v1.0.34
  • glibc 2.33
  • Eclipse 2020-03 4.15.0 with CDT 9.11.0
  • OpenOCD 0.9+ upstream commit 30203b3d8b, with ARC support.

This release of GNU toolchain and IDE is supported by CGEN IPlib (TCF generator) version 1.0.53 and later.

New Features and Enhancements

  • Binary distribution

    • Supported host operating systems: Windows 10 64-bit, Ubuntu 16.04.x, 18.04.x, CentOS/RHEL 7.x
    • No longer compatible with CentOS/RHEL 6.x due to GDB 8.3 and newer requirement for C++11 support in the compiler. Still it's perfectly possible to build Elf32 & uClibc toolchains without GDB on CentOS/RHEL 6.x.

  • Toolchain Build Scripts

    • Documentation update

  • GCC

    • Significantly improved support of reduced register file configurations (RF16), for example when -mcpu=em_mini is used for building.
    • Bug fixes

  • GDB

  • Binutils

    • Updated to Binutils 2.36.1, see upstream release notes for more details: 2.36 release & 2.36.1 patch-release
    • Bug fixes

  • glibc

    • Updated to the upstream 2.33 release

  • uClibc-ng

    • No changes, the same version is used

  • Newlib

  • Eclipse plugins

    • Eclipse 2020-03 is used as a base
    • Bug fixes

Bugs Fixed in this Release

User reported Github issues fixed in this release can be found here:
https://github.com/foss-for-synopsys-dwc-arc-processors/toolchain/milestone/9?closed=1

  • Improved support of ARC processors with reduced register file (RF16 configuration), see: #327, #231, #354 & #355.
  • Fixed building of GDB on CentOS/RHEL 7.x hosts, see #328.

Known issues

  1. CenOS 6.x hosts are not supported any longer for both running prebuilt tools as well as for building tools, see #202.

  2. GDB compilation may intermittently fail due to unwanted regenerating intl/plural.c, see #212.

  3. [Jira P10019563-38842] Ashling Opella-XD drivers of version 1.2.6 and above to work with ARC GNU IDE require to run the Ashling GDB server separately and select "Connect to a running GDB server" in the Debug Launch.

    To run the Ashling GDB server use the following from a command prompt:

    C:\AshlingOpellaXDforARC> ash-arc-gdb-server.exe --device arc-em

    Other supported devices are arc-hs, arc-600 and arc-700.

    See section "3.2 Configuring the Ashling GDB Server" in the Ashling Opella-XD ARC User manual for more details.

  4. Newlib's libgloss doesn't support RF16 configuration of ARC cores when building for nSIM with "GNU Hostlink", see #231. But with use of "MetaWare Hostlink" RF16 configuration might be used now, see https://github.com/foss-for-synopsys-dwc-arc-processors/newlib/blob/arc-2021.03/libgloss/arc/readme-hostlink.md for more details.

  5. Non-multilib toolchain built for ARC EM doesn't contain libdw_uart.a for EMSK, see #262

  6. Native toolchain for ARC HS is not usable due to wrong build configuration.

Please report any problems by filing an Issue in GitHub here.

Note: The toolchain is only supported for 64-bit versions of Linux hosts. 32-bit Linux hosts are not supported.

Linux x86_64 Windows x86_64 Linux ARC HS macOS x86_64
Baremetal Little endian \ Big endian Little endian \ Big endian
Linux/uClibc ARC700 Little endian \ Big endian
Linux/uClibc ARC HS Little endian \ Big endian Little endian
Linux/glibc ARC HS Little endian \ Big endian
IDE Download Download Download 
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