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Diffstat (limited to 'user/start/tools.rst')
| -rw-r--r-- | user/start/tools.rst | 80 |
1 files changed, 58 insertions, 22 deletions
diff --git a/user/start/tools.rst b/user/start/tools.rst index c3f039b..3656867 100644 --- a/user/start/tools.rst +++ b/user/start/tools.rst @@ -1,8 +1,9 @@ .. SPDX-License-Identifier: CC-BY-SA-4.0 -.. Copyright (C) 2019 embedded brains GmbH +.. Copyright (C) 2019 embedded brains GmbH & Co. KG .. Copyright (C) 2019 Sebastian Huber .. Copyright (C) 2020 Chris Johns +.. Copyright (C) 2020 Utkarsh Rai .. _QuickStartTools: @@ -11,12 +12,12 @@ Install the Tool Suite You have chosen an installation prefix, the BSP to build, the tool's architecure and prepared the source for the RSB in the previous sections. We -have chosen :file:`$HOME/quick-start/rtems/5` as the installation prefix, the -``erc32`` BSP and the SPARC architecture name of ``sparc-rtems5``, and unpacked +have chosen :file:`$HOME/quick-start/rtems/6` as the installation prefix, the +``erc32`` BSP and the SPARC architecture name of ``sparc-rtems6``, and unpacked the RSB source in :file:`$HOME/quick-start/src`. The tool suite for RTEMS and the RTEMS sources are tightly coupled. For -example, do not use a RTEMS version 5 tool suite with RTEMS version 4.11 +example, do not use a RTEMS version 6 tool suite with RTEMS version 4.11 or 5 sources and vice versa. Build and install the tool suite: @@ -24,7 +25,7 @@ Build and install the tool suite: .. code-block:: none cd $HOME/quick-start/src/rsb/rtems - ../source-builder/sb-set-builder --prefix=$HOME/quick-start/rtems/5 5/rtems-sparc + ../source-builder/sb-set-builder --prefix=$HOME/quick-start/rtems/6 6/rtems-sparc This command should output something like this (omitted lines are denoted by ...). The build host appears as part of the name of the package being @@ -32,29 +33,32 @@ built. The name you see may vary depending on the host you are using: .. code-block:: none - RTEMS Source Builder - Set Builder, 5.1.0 - Build Set: 5/rtems-sparc + RTEMS Source Builder - Set Builder, 6 (5e449fb5c2cb) + Build Set: 6/rtems-sparc ... - config: tools/rtems-binutils-2.34.cfg - package: sparc-rtems5-binutils-2.34-x86_64-freebsd12.1-1 - building: sparc-rtems5-binutils-2.34-x86_64-freebsd12.1-1 - sizes: sparc-rtems5-binutils-2.34-x86_64-freebsd12.1-1: 305.866MB (installed: 29.966MB) - cleaning: sparc-rtems5-binutils-2.34-x86_64-freebsd12.1-1 - reporting: tools/rtems-binutils-2.34.cfg -> sparc-rtems5-binutils-2.34-x86_64-freebsd12.1-1.txt - reporting: tools/rtems-binutils-2.34.cfg -> sparc-rtems5-binutils-2.34-x86_64-freebsd12.1-1.xml - config: tools/rtems-gcc-7.5.0-newlib-fbaa096.cfg - package: sparc-rtems5-gcc-7.5.0-newlib-fbaa096-x86_64-freebsd12.1-1 - building: sparc-rtems5-gcc-7.5.0-newlib-fbaa096-x86_64-freebsd12.1-1 + config: tools/rtems-binutils-2.36.cfg + package: sparc-rtems6-binutils-fbb9a7e-x86_64-linux-gnu-1 + building: sparc-rtems6-binutils-fbb9a7e-x86_64-linux-gnu-1 + sizes: sparc-rtems6-binutils-fbb9a7e-x86_64-linux-gnu-1: 716.015MB (installed: 163.538MB) + cleaning: sparc-rtems6-binutils-fbb9a7e-x86_64-linux-gnu-1 + reporting: tools/rtems-binutils-2.36.cfg -> sparc-rtems6-binutils-fbb9a7e-x86_64-linux-gnu-1.txt + reporting: tools/rtems-binutils-2.36.cfg -> sparc-rtems6-binutils-fbb9a7e-x86_64-linux-gnu-1.xml + config: tools/rtems-gcc-10-newlib-head.cfg + package: sparc-rtems6-gcc-6051af8-newlib-d10d0d9-x86_64-linux-gnu-1 + building: sparc-rtems6-gcc-6051af8-newlib-d10d0d9-x86_64-linux-gnu-1 .... - Build Sizes: usage: 5.684GB total: 1.112GB (sources: 143.803MB, patches: 21.348KB, installed 995.188MB) - Build Set: Time 0:21:35.626294 + Build Sizes: usage: 9.607GB total: 2.244GB (sources: 264.186MB, patches: 43.468KB, installed 1.986GB) + installing: 6/rtems-sparc -> $HOME/quick-start/rtems/6 + clean staging: 6/rtems-sparc + Staging Size: 5.292MB + Build Set: Time 1:01:48.019157 Once the build has successfully completed you can check if the cross C compiler works with the following command: .. code-block:: none - $HOME/quick-start/rtems/5/bin/sparc-rtems5-gcc --version + $HOME/quick-start/rtems/6/bin/sparc-rtems6-gcc --version This command should output something like below. The version informtion helps you to identify the exact sources used to build the cross compiler of your @@ -68,11 +72,43 @@ source code used. .. code-block:: none - sparc-rtems5-gcc (GCC) 7.5.0 20191114 (RTEMS 5, RSB 5.1.0, Newlib fbaa096) - Copyright (C) 2017 Free Software Foundation, Inc. + sparc-rtems6-gcc (GCC) 10.2.1 20210309 (RTEMS 6, RSB 5e449fb5c2cb6812a238f9f9764fd339cbbf05c2, Newlib d10d0d9) + Copyright (C) 2020 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. Add ``--verbose`` to the GCC command for the the verbose version details. + +Need for RTEMS-Specific Cross-Compiler +--------------------------------------------------------- + +New users are often confused as to why they cannot use their distribution's +cross-compiler for their target on RTEMS, e.g., the riscv64-linux-gnu or the +arm-none-eabi-gcc. Below mentioned are some of the reasons for using +the RTEMS cross-compiler. + + Correct configuration of Newlib + Newlib is a C standard library implementation intended for use on embedded + systems. Most of the POSIX and libc support for RTEMS is derived from + Newlib. The RTEMS cross-compiler configures Newlib correctly for RTEMS. + + Threading in GCC support libraries + Several threading packages in GCC such as Go threads (libgo), OpenMP + (libgomp), and OpenACC need to be customized according to RTEMS. This is + done by the RTEMS specific cross-compiler. + + Provide preprocessor define __rtems__ + The ``__rtems__`` preprocessor define is used to provide conditional code + compilation in source files that are shared with other projects e.g. in + Newlib or imported code from FreeBSD. + + Multilib variants to match the BSP + RTEMS configures GCC to create separate runtime libraries for each + supported instruction set, floating point unit, vector unit, word size + (e.g. 32-bit and 64-bit), endianness, ABI, processor errata workarounds, + and so on in the architecture. These libraries are termed as :ref:`Multilib + <TargetArchitectures>` variants. Multilib variants to match the BSP are set + by selecting a specific set of machine options using the RTEMS + cross-compiler. |