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user: Add "Build a Board Support Package (BSP)"
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Sebastian Huber
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146
user/start/bsp-build.rst
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146
user/start/bsp-build.rst
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.. SPDX-License-Identifier: CC-BY-SA-4.0
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.. Copyright (C) 2019 embedded brains GmbH
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.. Copyright (C) 2019 Sebastian Huber
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.. _QuickStartBSPBuild:
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Build a Board Support Package (BSP)
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===================================
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You installed the tool suite in your installation prefix, cloned two RTEMS
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repositories and bootstrapped the RTEMS sources in the previous sections. We
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installed the tool suite in :file:`$HOME/quick-start/rtems/5` and cloned the
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repositories in :file:`$HOME/quick-start/src`. We also bootstrapped the RTEMS
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sources.
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You are now able to build :ref:`Board Support Packages (BSPs) <BSPs>` for all
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architectures where you have an RTEMS tool suite installed. To build
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applications on top of RTEMS, you have to configure, build and install a BSP
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for your target hardware. To select a proper BSP for your target hardware
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consult the :ref:`BSPs <BSPs>` chapter. We select the `erc32` BSP.
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We configure, build and install the BSP in four steps. The first step is to
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create a build directory. It must be separate from the RTEMS source directory.
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We use :file:`$HOME/quick-start/build/b-erc32`.
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.. code-block:: none
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mkdir -p $HOME/quick-start/build/b-erc32
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The second step is to configure the BSP. There are various configuration
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options available. Some configuration options are BSP-specific. Prepend the
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RTEMS tool suite binary directory to your ``$PATH`` throughout the remaining
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steps.
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.. code-block:: none
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cd $HOME/quick-start/build/b-erc32
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export PATH=$HOME/quick-start/rtems/5/bin:"$PATH"
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$HOME/quick-start/src/rtems/configure \
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--prefix=$HOME/quick-start/rtems/5 \
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--enable-maintainer-mode \
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--target=sparc-rtems5 \
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--enable-rtemsbsp=erc32 \
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--enable-tests
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This command should output something like this (omitted lines are denoted by
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...):
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.. code-block:: none
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checking for gmake... gmake
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checking for RTEMS Version... 5.0.0
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checking build system type... x86_64-unknown-freebsd12.0
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checking host system type... x86_64-unknown-freebsd12.0
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checking target system type... sparc-unknown-rtems5
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...
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config.status: creating Makefile
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target architecture: sparc.
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available BSPs: erc32.
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'gmake all' will build the following BSPs: erc32.
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other BSPs can be built with 'gmake RTEMS_BSP="bsp1 bsp2 ..."'
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config.status: creating Makefile
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Building the BSP is the third step.
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.. code-block:: none
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cd $HOME/quick-start/build/b-erc32
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make
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This command should output something like this (omitted lines are denoted by
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...). In this output the base directory :file:`$HOME/quick-start` was replaced
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by ``$BASE``.
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.. code-block:: none
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Configuring RTEMS_BSP=erc32
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checking for gmake... gmake
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checking build system type... x86_64-unknown-freebsd12.0
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checking host system type... sparc-unknown-rtems5
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checking rtems target cpu... sparc
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checking for a BSD-compatible install... /usr/bin/install -c
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checking whether build environment is sane... yes
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checking for sparc-rtems5-strip... sparc-rtems5-strip
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checking for a thread-safe mkdir -p... $BASE/src/rtems/c/src/../../install-sh -c -d
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checking for gawk... no
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checking for mawk... no
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checking for nawk... nawk
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checking whether gmake sets $(MAKE)... yes
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checking whether to enable maintainer-specific portions of Makefiles... yes
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checking for RTEMS_BSP... erc32
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checking whether CPU supports libposix... yes
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configure: setting up make/custom
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configure: creating make/erc32.cache
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gmake[3]: Entering directory '$BASE/build/b-erc32/sparc-rtems5/c/erc32'
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...
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sparc-rtems5-gcc -mcpu=cypress -O2 -g -ffunction-sections -fdata-sections -Wall -Wmissing-prototypes -Wimplicit-function-declaration -Wstrict-prototypes -Wnested-externs -B./../../lib/libbsp/sparc/erc32 -B$BASE/src/rtems/bsps/sparc/erc32/start -specs bsp_specs -qrtems -L./../../cpukit -L$BASE/src/rtems/bsps/sparc/shared/start -Wl,--wrap=printf -Wl,--wrap=puts -Wl,--wrap=putchar -Wl,--gc-sections -o spwkspace.exe spwkspace/spwkspace-init.o ./../../lib/libbsp/sparc/erc32/librtemsbsp.a ./../../cpukit/librtemscpu.a
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gmake[5]: Leaving directory '$BASE/build/b-erc32/sparc-rtems5/c/erc32/testsuites/sptests'
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gmake[4]: Leaving directory '$BASE/build/b-erc32/sparc-rtems5/c/erc32/testsuites'
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gmake[3]: Leaving directory '$BASE/build/b-erc32/sparc-rtems5/c/erc32'
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gmake[2]: Leaving directory '$BASE/build/b-erc32/sparc-rtems5/c/erc32'
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gmake[1]: Leaving directory '$BASE/build/b-erc32/sparc-rtems5/c'
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gmake[1]: Entering directory '$BASE/build/b-erc32'
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gmake[1]: Nothing to be done for 'all-am'.
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gmake[1]: Leaving directory '$BASE/build/b-erc32'
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The last step is to install the BSP.
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.. code-block:: none
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cd $HOME/quick-start/build/b-erc32
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make install
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This command should output something like this (omitted lines are denoted by
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...). In this output the base directory :file:`$HOME/quick-start` was replaced
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by ``$BASE``.
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.. code-block:: none
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Making install in sparc-rtems5/c
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gmake[1]: Entering directory '$BASE/build/b-erc32/sparc-rtems5/c'
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Making install in .
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gmake[2]: Entering directory '$BASE/build/b-erc32/sparc-rtems5/c'
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gmake[3]: Entering directory '$BASE/build/b-erc32/sparc-rtems5/c'
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gmake[3]: Nothing to be done for 'install-exec-am'.
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gmake[3]: Nothing to be done for 'install-data-am'.
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gmake[3]: Leaving directory '$BASE/build/b-erc32/sparc-rtems5/c'
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gmake[2]: Leaving directory '$BASE/build/b-erc32/sparc-rtems5/c'
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Making install in erc32
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gmake[2]: Entering directory '$BASE/build/b-erc32/sparc-rtems5/c/erc32'
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gmake[3]: Entering directory '$BASE/build/b-erc32/sparc-rtems5/c/erc32'
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Making install-am in .
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Making install-am in cpukit
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gmake[4]: Entering directory '$BASE/build/b-erc32/sparc-rtems5/c/erc32/cpukit'
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gmake[5]: Entering directory '$BASE/build/b-erc32/sparc-rtems5/c/erc32/cpukit'
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gmake[5]: Nothing to be done for 'install-exec-am'.
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$BASE/src/rtems/c/src/../../cpukit/../install-sh -c -d '$BASE/rtems/5/sparc-rtems5/erc32/lib/include'
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...
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$BASE/src/rtems/make/Templates/Makefile.lib '$BASE/rtems/5/share/rtems5/make/Templates'
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$BASE/src/rtems/./install-sh -c -d '$BASE/rtems/5/make/custom'
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/usr/bin/install -c -m 644 $BASE/src/rtems/make/custom/default.cfg '$BASE/rtems/5/make/custom'
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gmake[2]: Leaving directory '$BASE/build/b-erc32'
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gmake[1]: Leaving directory '$BASE/build/b-erc32'
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@ -21,6 +21,7 @@ applications on top of RTEMS.
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sources
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tools
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bootstrap
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bsp-build
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The following is a quick start guide that provides a basic set of commands to
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build the RTEMS Tools and Kernel. The quick start guide provides links to the
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