.. comment SPDX-License-Identifier: CC-BY-SA-4.0 .. comment: Copyright (c) 2016 Chris Johns .. comment: All rights reserved. .. _microsoft-windows: Microsoft Windows ~~~~~~~~~~~~~~~~~ RTEMS supports Windows as a development host and the tools for most architectures are available. The RTEMS Project relies on the GNU tools for compilers and debuggers and we use the simulators that come with GDB and QEMU. The Windows support for these tools varies and the RTEMS Project is committed to helping the open source community improve the Windows experience. If something is not working or supported please email the :r:list:`users`. The RTEMS Project's Windows tools are native Windows executables giving the user the best possible experience on Windows. Native Windows programs use the standard Windows DLLs and paths. Integration with standard Windows integrated development tools such as editors is straight forward. POSIX emulation environments such as Cygwin and the MSYS2 shell have special executables that require a POSIX emulation DLL and these emulation DLLs add an extra layer of complexity as well as a performance over-head. The RTEMS Project uses these POSIX emulation shells to run configure scripts that come with various open source packages such as `gcc` so they form an important and valued part of the environment we describe here. The output of this procedure forms the tools you use during your application development and they do not depend on the emulation DLLs. The performance of the compiler is as good as you can have on Windows and the performance compiling a single file will be similar to that on a host like Linux or FreeBSD given the same hardware. Building the tools from source is much slower on Windows because POSIX shells and related tools are used and the POSIX emulation overhead it much much slower than a native POSIX operating system like Linux and FreeBSD. This overhead is only during the building of the tools and the RTEMS kernel and if you use a suitable build system that is native to Windows your application development should be similar to other operating systems. Building is known to work on `Windows 7 64bit Professional` and `Windows 10`. .. _windows-path-length: Windows Path Length ^^^^^^^^^^^^^^^^^^^ Windows path length is limited and can cause problems when building the tools. The standard Windows API has a ``MAX_PATH`` length of 260 characters. This can effect some of the tools used by RTEMS. It is recommended you keep the top level directories as short as possible when building the RTEMS tools and you should also keep an eye on the path length when developing your application. The RTEMS built tools can handle much longer path lengths however some of the GNU tools such as those in the ``binutils`` package cannot. The release packages of the RSB when unpacked have top level file names that are too big to build RTEMS. You need to change or rename that path to something smaller to build. This is indicated in :ref:`released-version`. .. _msys2_parallel_builds: Parallel Builds with Make ^^^^^^^^^^^^^^^^^^^^^^^^^ The MSYS2 GNU ``make`` has problems when using the `jobs` option. The RSB defaults to automatically using as many cores as the host machine has. To get a successful build on Windows it is recommended you add the ``--jobs=none`` option to all RSB build set commands. POSIX Support ^^^^^^^^^^^^^ Building the RTEMS compilers, debugger, the RTEMS kernel and a number of other 3rd party packages requires a POSIX environment. On Windows you can use Cygwin or MSYS2. This document focuses on MSYS2. It is smaller than Cygwin and comes with the Arch Linux package manager ``pacman``. MSYS2 provides MinGW64 support as well as a POSIX shell called MSYS2. The MinGW64 compiler and related tools produce 64bit native Windows executables. The shell is a standard Bourne shell and the MSYS2 environment is a stripped Cygwin shell with enough support to run the various ``configure`` scripts needed to build the RTEMS tools and the RTEMS kernel. MSYS2 is built around the ``pacman`` packaging tool. This makes MSYS2 a distribution and that is a welcome feature on Windows. You get a powerful tool to manage your development environment on Windows. Python ^^^^^^ We need Python to build the tools as the RSB is written in Python and we need suitable Python libraries to link to GDB as RTEMS makes use of GDB's Python support. This places specific demands on the Python we need installed and available and MSYS2 provides suitable Python versions we can use. You need to make sure you have the correct type and version of Python installed. We cannot use the Python executables created by the Python project (python.org) as they are built by Microsoft's C (MSC) compiler. Linking the MSC Python libraries with the MinGW64 executables is not easy and MSYS provides us with a simple solution so we do not support linking MSC libraries. MSYS2 provides two types and two versions of Python executables, MinGW and MSYS and Python version 2 and 3. For Windows we need the MinGW executable so we have suitables libraries and we have to have Python version 2 because on Windows GDB only builds with Python2. You also need to install the MSYS version of Python along with the MinGW64 Python2 package. The MSYS Python is version 3 and the RSB can support version 2 and 3 of Python and it helps handle some of the long paths building GCC can generate. .. _microsoft-windows-installation: Installing MSYS2 ^^^^^^^^^^^^^^^^ MSYS2 is installed on a new machine using the MSYS2 installer found on https://msys2.github.io/. Please select the ``x86_64`` variant for 64bit support. Run the installer following the 7 steps listed on the page. MSYS2 uses the ``pacman`` package manager. The Arch Linux project has detailed documentation on how to use ``pacman``. What is shown here is a just few examples of what you can do. .. sidebar:: **Pin MSYS2 Shell to Taskbar** Pin the MSYS2 64bit Shell to the Taskbar so you always use it rather than the 32bit Shell. Open a 64bit MSYS shell from the Start Menu: .. figure:: ../../images/msys2-minw64-start-menu.png :width: 50% :align: center :alt: MSYS2 64bit Shell Start Menu The packages we require are: * python * mingw-w64-x86_64-python2 * mingw-w64-x86_64-gcc * git * bison * cvs * diffutils * make * patch * tar * texinfo * unzip .. note:: The actual output provided may vary due to changes in the dependent packages or newer package versions. Install the packages using ``pacman``: .. code-block:: shell ~ $ pacman -S python mingw-w64-x86_64-python2 mingw-w64-x86_64-gcc \ bison cvs diffutils git make patch tar texinfo unzip resolving dependencies... looking for conflicting packages... Packages (74) db-5.3.28-2 expat-2.1.0-2 gdbm-1.11-3 heimdal-1.5.3-8 libgdbm-1.11-3 mingw-w64-x86_64-binutils-2.26-21 mingw-w64-x86_64-bzip2-1.0.6-5 mingw-w64-x86_64-ca-certificates-20150426-2 mingw-w64-x86_64-crt-git-5.0.0.4627.03684c4-1 mingw-w64-x86_64-expat-2.1.0-6 mingw-w64-x86_64-gcc-libs-5.3.0-2 mingw-w64-x86_64-gdbm-1.11-3 mingw-w64-x86_64-gettext-0.19.6-2 mingw-w64-x86_64-gmp-6.1.0-1 mingw-w64-x86_64-headers-git-5.0.0.4627.53be55d-1 mingw-w64-x86_64-isl-0.15-1 mingw-w64-x86_64-libffi-3.2.1-3 mingw-w64-x86_64-libiconv-1.14-5 mingw-w64-x86_64-libsystre-1.0.1-2 mingw-w64-x86_64-libtasn1-4.7-1 mingw-w64-x86_64-libtre-git-r122.c2f5d13-4 mingw-w64-x86_64-libwinpthread-git-5.0.0.4573.628fdbf-1 mingw-w64-x86_64-mpc-1.0.3-2 mingw-w64-x86_64-mpfr-3.1.3.p0-2 mingw-w64-x86_64-ncurses-6.0.20160220-2 mingw-w64-x86_64-openssl-1.0.2.g-1 mingw-w64-x86_64-p11-kit-0.23.1-3 mingw-w64-x86_64-readline-6.3.008-1 mingw-w64-x86_64-tcl-8.6.5-1 mingw-w64-x86_64-termcap-1.3.1-2 mingw-w64-x86_64-tk-8.6.5-1 mingw-w64-x86_64-windows-default-manifest-6.4-2 mingw-w64-x86_64-winpthreads-git-5.0.0.4573.628fdbf-1 mingw-w64-x86_64-zlib-1.2.8-9 openssh-7.1p2-1 perl-5.22.0-2 perl-Authen-SASL-2.16-2 perl-Convert-BinHex-1.123-2 perl-Encode-Locale-1.04-1 perl-Error-0.17024-1 perl-File-Listing-6.04-2 perl-HTML-Parser-3.71-3 perl-HTML-Tagset-3.20-2 perl-HTTP-Cookies-6.01-2 perl-HTTP-Daemon-6.01-2 perl-HTTP-Date-6.02-2 perl-HTTP-Message-6.06-2 perl-HTTP-Negotiate-6.01-2 perl-IO-Socket-SSL-2.016-1 perl-IO-stringy-2.111-1 perl-LWP-MediaTypes-6.02-2 perl-MIME-tools-5.506-1 perl-MailTools-2.14-1 perl-Net-HTTP-6.09-1 perl-Net-SMTP-SSL-1.02-1 perl-Net-SSLeay-1.70-1 perl-TermReadKey-2.33-1 perl-TimeDate-2.30-2 perl-URI-1.68-1 perl-WWW-RobotRules-6.02-2 perl-libwww-6.13-1 vim-7.4.1468-1 bison-3.0.4-1 cvs-1.11.23-2 diffutils-3.3-3 git-2.7.2-1 make-4.1-4 mingw-w64-x86_64-gcc-5.3.0-2 mingw-w64-x86_64-python2-2.7.11-4 patch-2.7.5-1 python-3.4.3-3 tar-1.28-3 texinfo-6.0-1 unzip-6.0-2 Total Download Size: 114.10 MiB Total Installed Size: 689.61 MiB :: Proceed with installation? [Y/n] y :: Retrieving packages... mingw-w64-x86_64-gm... 477.1 KiB 681K/s 00:01 [#####################] 100% mingw-w64-x86_64-li... 24.2 KiB 755K/s 00:00 [#####################] 100% mingw-w64-x86_64-gc... 541.9 KiB 705K/s 00:01 [#####################] 100% mingw-w64-x86_64-ex... 106.7 KiB 702K/s 00:00 [#####################] 100% mingw-w64-x86_64-bz... 77.9 KiB 666K/s 00:00 [#####################] 100% mingw-w64-x86_64-li... 600.2 KiB 703K/s 00:01 [#####################] 100% mingw-w64-x86_64-ge... 3.0 MiB 700K/s 00:04 [#####################] 100% mingw-w64-x86_64-gd... 151.8 KiB 483K/s 00:00 [#####################] 100% mingw-w64-x86_64-li... 34.5 KiB 705K/s 00:00 [#####################] 100% mingw-w64-x86_64-li... 69.2 KiB 713K/s 00:00 [#####################] 100% mingw-w64-x86_64-li... 9.3 KiB 778K/s 00:00 [#####################] 100% mingw-w64-x86_64-nc... 1800.5 KiB 701K/s 00:03 [#####################] 100% mingw-w64-x86_64-li... 171.4 KiB 708K/s 00:00 [#####################] 100% mingw-w64-x86_64-p1... 193.5 KiB 709K/s 00:00 [#####################] 100% mingw-w64-x86_64-ca... 382.1 KiB 705K/s 00:01 [#####################] 100% mingw-w64-x86_64-zl... 148.6 KiB 704K/s 00:00 [#####################] 100% mingw-w64-x86_64-op... 3.3 MiB 624K/s 00:05 [#####################] 100% mingw-w64-x86_64-te... 12.6 KiB 76.7K/s 00:00 [#####################] 100% mingw-w64-x86_64-re... 327.4 KiB 277K/s 00:01 [#####################] 100% mingw-w64-x86_64-tc... 2.9 MiB 699K/s 00:04 [#####################] 100% mingw-w64-x86_64-tk... 1869.2 KiB 703K/s 00:03 [#####################] 100% mingw-w64-x86_64-py... 10.9 MiB 699K/s 00:16 [#####################] 100% mingw-w64-x86_64-bi... 12.7 MiB 688K/s 00:19 [#####################] 100% mingw-w64-x86_64-he... 5.0 MiB 645K/s 00:08 [#####################] 100% mingw-w64-x86_64-cr... 2.6 MiB 701K/s 00:04 [#####################] 100% mingw-w64-x86_64-is... 524.3 KiB 684K/s 00:01 [#####################] 100% mingw-w64-x86_64-mp... 265.2 KiB 705K/s 00:00 [#####################] 100% mingw-w64-x86_64-mp... 62.3 KiB 82.9K/s 00:01 [#####################] 100% mingw-w64-x86_64-wi... 1484.0 B 0.00B/s 00:00 [#####################] 100% mingw-w64-x86_64-wi... 33.2 KiB 346K/s 00:00 [#####################] 100% mingw-w64-x86_64-gc... 25.1 MiB 701K/s 00:37 [#####################] 100% python-3.4.3-3-x86_64 12.1 MiB 700K/s 00:18 [#####################] 100% bison-3.0.4-1-x86_64 1045.1 KiB 703K/s 00:01 [#####################] 100% heimdal-1.5.3-8-x86_64 543.7 KiB 703K/s 00:01 [#####################] 100% cvs-1.11.23-2-x86_64 508.2 KiB 388K/s 00:01 [#####################] 100% diffutils-3.3-3-x86_64 265.7 KiB 478K/s 00:01 [#####################] 100% expat-2.1.0-2-x86_64 13.1 KiB 817K/s 00:00 [#####################] 100% vim-7.4.1468-1-x86_64 6.1 MiB 700K/s 00:09 [#####################] 100% openssh-7.1p2-1-x86_64 653.4 KiB 703K/s 00:01 [#####################] 100% db-5.3.28-2-x86_64 41.7 KiB 719K/s 00:00 [#####################] 100% libgdbm-1.11-3-x86_64 20.4 KiB 754K/s 00:00 [#####################] 100% gdbm-1.11-3-x86_64 108.5 KiB 704K/s 00:00 [#####################] 100% perl-5.22.0-2-x86_64 12.4 MiB 702K/s 00:18 [#####################] 100% perl-Error-0.17024-... 17.1 KiB 742K/s 00:00 [#####################] 100% perl-Authen-SASL-2.... 42.4 KiB 731K/s 00:00 [#####################] 100% perl-Encode-Locale-... 9.7 KiB 745K/s 00:00 [#####################] 100% perl-HTTP-Date-6.02... 8.6 KiB 784K/s 00:00 [#####################] 100% perl-File-Listing-6... 7.7 KiB 769K/s 00:00 [#####################] 100% perl-HTML-Tagset-3.... 10.3 KiB 732K/s 00:00 [#####################] 100% perl-HTML-Parser-3.... 76.9 KiB 516K/s 00:00 [#####################] 100% perl-LWP-MediaTypes... 18.0 KiB 752K/s 00:00 [#####################] 100% perl-URI-1.68-1-any 75.6 KiB 609K/s 00:00 [#####################] 100% perl-HTTP-Message-6... 71.3 KiB 625K/s 00:00 [#####################] 100% perl-HTTP-Cookies-6... 20.4 KiB 499K/s 00:00 [#####################] 100% perl-HTTP-Daemon-6.... 14.2 KiB 749K/s 00:00 [#####################] 100% perl-HTTP-Negotiate... 11.4 KiB 817K/s 00:00 [#####################] 100% perl-Net-HTTP-6.09-... 19.8 KiB 732K/s 00:00 [#####################] 100% perl-WWW-RobotRules... 12.2 KiB 766K/s 00:00 [#####################] 100% perl-libwww-6.13-1-any 122.2 KiB 661K/s 00:00 [#####################] 100% perl-TimeDate-2.30-... 35.9 KiB 718K/s 00:00 [#####################] 100% perl-MailTools-2.14... 58.4 KiB 712K/s 00:00 [#####################] 100% perl-IO-stringy-2.1... 52.6 KiB 721K/s 00:00 [#####################] 100% perl-Convert-BinHex... 30.1 KiB 733K/s 00:00 [#####################] 100% perl-MIME-tools-5.5... 180.4 KiB 705K/s 00:00 [#####################] 100% perl-Net-SSLeay-1.7... 191.2 KiB 708K/s 00:00 [#####################] 100% perl-IO-Socket-SSL-... 112.5 KiB 703K/s 00:00 [#####################] 100% perl-Net-SMTP-SSL-1... 3.5 KiB 881K/s 00:00 [#####################] 100% perl-TermReadKey-2.... 20.9 KiB 745K/s 00:00 [#####################] 100% git-2.7.2-1-x86_64 3.6 MiB 702K/s 00:05 [#####################] 100% make-4.1-4-x86_64 387.0 KiB 671K/s 00:01 [#####################] 100% patch-2.7.5-1-x86_64 75.9 KiB 684K/s 00:00 [#####################] 100% tar-1.28-3-x86_64 671.9 KiB 379K/s 00:02 [#####################] 100% texinfo-6.0-1-x86_64 992.7 KiB 625K/s 00:02 [#####################] 100% unzip-6.0-2-x86_64 93.1 KiB 705K/s 00:00 [#####################] 100% (74/74) checking keys in keyring [#####################] 100% (74/74) checking package integrity [#####################] 100% (74/74) loading package files [#####################] 100% (74/74) checking for file conflicts [#####################] 100% (74/74) checking available disk space [#####################] 100% :: Processing package changes... ( 1/74) installing python [#####################] 100% ( 2/74) installing mingw-w64-x86_64-gmp [#####################] 100% ( 3/74) installing mingw-w64-x86_64-libwinpthr... [#####################] 100% ( 4/74) installing mingw-w64-x86_64-gcc-libs [#####################] 100% ( 5/74) installing mingw-w64-x86_64-expat [#####################] 100% ( 6/74) installing mingw-w64-x86_64-bzip2 [#####################] 100% ( 7/74) installing mingw-w64-x86_64-libiconv [#####################] 100% ( 8/74) installing mingw-w64-x86_64-gettext [#####################] 100% ( 9/74) installing mingw-w64-x86_64-gdbm [#####################] 100% (10/74) installing mingw-w64-x86_64-libffi [#####################] 100% (11/74) installing mingw-w64-x86_64-libtre-git [#####################] 100% (12/74) installing mingw-w64-x86_64-libsystre [#####################] 100% (13/74) installing mingw-w64-x86_64-ncurses [#####################] 100% (14/74) installing mingw-w64-x86_64-libtasn1 [#####################] 100% (15/74) installing mingw-w64-x86_64-p11-kit [#####################] 100% (16/74) installing mingw-w64-x86_64-ca-certifi... [#####################] 100% (17/74) installing mingw-w64-x86_64-zlib [#####################] 100% (18/74) installing mingw-w64-x86_64-openssl [#####################] 100% (19/74) installing mingw-w64-x86_64-termcap [#####################] 100% (20/74) installing mingw-w64-x86_64-readline [#####################] 100% (21/74) installing mingw-w64-x86_64-tcl [#####################] 100% (22/74) installing mingw-w64-x86_64-tk [#####################] 100% (23/74) installing mingw-w64-x86_64-python2 [#####################] 100% (24/74) installing mingw-w64-x86_64-binutils [#####################] 100% (25/74) installing mingw-w64-x86_64-headers-git [#####################] 100% (26/74) installing mingw-w64-x86_64-crt-git [#####################] 100% (27/74) installing mingw-w64-x86_64-isl [#####################] 100% (28/74) installing mingw-w64-x86_64-mpfr [#####################] 100% (29/74) installing mingw-w64-x86_64-mpc [#####################] 100% (30/74) installing mingw-w64-x86_64-windows-de... [#####################] 100% (31/74) installing mingw-w64-x86_64-winpthread... [#####################] 100% (32/74) installing mingw-w64-x86_64-gcc [#####################] 100% (33/74) installing bison [#####################] 100% (34/74) installing heimdal [#####################] 100% (35/74) installing cvs [#####################] 100% (36/74) installing diffutils [#####################] 100% (37/74) installing expat [#####################] 100% (38/74) installing vim [#####################] 100% (39/74) installing openssh [#####################] 100% (40/74) installing db [#####################] 100% (41/74) installing libgdbm [#####################] 100% (42/74) installing gdbm [#####################] 100% (43/74) installing perl [#####################] 100% (44/74) installing perl-Error [#####################] 100% (45/74) installing perl-Authen-SASL [#####################] 100% (46/74) installing perl-Encode-Locale [#####################] 100% (47/74) installing perl-HTTP-Date [#####################] 100% (48/74) installing perl-File-Listing [#####################] 100% (49/74) installing perl-HTML-Tagset [#####################] 100% (50/74) installing perl-HTML-Parser [#####################] 100% (51/74) installing perl-LWP-MediaTypes [#####################] 100% (52/74) installing perl-URI [#####################] 100% (53/74) installing perl-HTTP-Message [#####################] 100% (54/74) installing perl-HTTP-Cookies [#####################] 100% (55/74) installing perl-HTTP-Daemon [#####################] 100% (56/74) installing perl-HTTP-Negotiate [#####################] 100% (57/74) installing perl-Net-HTTP [#####################] 100% (58/74) installing perl-WWW-RobotRules [#####################] 100% (59/74) installing perl-libwww [#####################] 100% Optional dependencies for perl-libwww perl-LWP-Protocol-HTTPS: for https:// url schemes (60/74) installing perl-TimeDate [#####################] 100% (61/74) installing perl-MailTools [#####################] 100% (62/74) installing perl-IO-stringy [#####################] 100% (63/74) installing perl-Convert-BinHex [#####################] 100% module test... pass. (64/74) installing perl-MIME-tools [#####################] 100% (65/74) installing perl-Net-SSLeay [#####################] 100% (66/74) installing perl-IO-Socket-SSL [#####################] 100% (67/74) installing perl-Net-SMTP-SSL [#####################] 100% (68/74) installing perl-TermReadKey [#####################] 100% (69/74) installing git [#####################] 100% Optional dependencies for git python2: various helper scripts subversion: git svn (70/74) installing make [#####################] 100% (71/74) installing patch [#####################] 100% Optional dependencies for patch ed: for patch -e functionality (72/74) installing tar [#####################] 100% (73/74) installing texinfo [#####################] 100% (74/74) installing unzip [#####################] 100%