WSJT-X/doc/building on MS Windows.txt

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Building WSJT-X on MS Windows
=============================
Here I describe my set up, you may have other preferences due to your
favoured file system layout for tools, utilities, and libraries. Many
variations are possible, use this guide as a template. The aim is to
provide an environment suitable for general development.
Prerequisite Tools and Libraries
================================
Here is an overview list, details are filled out below:
* Qt Open Source Framework
* Cmake build system generator
* FFTW v3 DFT library
* libusb usb device library
* MSYS2 *nix like command line environment
* Hamlib rig control library
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* Pkg Config Lite
* Boost C++ libraries
Qt Framework
------------
At the time of writing I recommend using Qt v5.15.0 64-bit, v5.15.1
has a defect that affects us so is best avoided. You need the MinGW
version as we do not support the MSVC version due to lack of a
suitable FOSS Fortran complier. To install the Qt developer SDK you
should download the official Qt on-line installer, this allows you to
install one or more variants of the Qt SDK and also to maintain and
update the installation at a later date. There are many versions and
components within versions available, you only need the base 64-bit
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MinGW framework for Qt v5.15.0 and the matching MinGW 8.1.0 64-bit
developer tools, other components can be unchecked within the on-line
installer. The default install location is C:\Qt which is fine, do
not attempt to move the location of the installed libraries if you
decide you want it elsewhere, the installer patches the libraries for
the installed location and it is easier to un-install and re-install
if you wish to change the installed location.
CMake
-----
Download and install a recent version from the official CMake web
site. A default installation is fine. I am currently using v3.18.3,
versions as old as v3.9 should work.
Other tools and libraries without installers
--------------------------------------------
For small libraries that don't have a Windows installer and change
often I locate them under a directory C:\Tools. This location is
arbitrary and just used to aggregate such items in one place, but this
document assumes that location so you may need to adjust paths etc. if
you use a different location.
FFTW v3 DFT library
-------------------
The MS Windows builds of FFTW3 can be downloaded from
http://www.fftw.org/install/windows.html and unzipped into C:\Tools.
You only need the 64-bit package.
libusb library
--------------
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This library is available from https://libusb.info/, download the .7z
archive as the .zip archive does not contain the libraries we
require. Unzip this package into C:\Tools.
MSYS2
-----
This utility is available from https://www.msys2.org/. Follow the
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download, installation, and initial upgrading instructions there. Once
installed and updated you will need to install some packages, these
are needed to provide the necessary *nix tools and utilities to build
Hamlib from sources.
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pacman -S autoconf automake libtool make
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Hamlib
------
Currently we statically link Hamlib to avoid clashes with
pre-installed DLLs that may be older versions than we support. Once
Hamlib v1.4 is officially released and commonly available we will move
to dynamic linking. Until then Hamlib must be built from
sources. There is a fork of the official Hamlib project which we keep
up to date with the official project master branch, we recommend
building from the 'integration' branch of that fork. The fork is a git
repository which can be cloned with this command:
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mkdir -p ~/src/sf/bsomervi
cd !$
git clone git://git.code.sf.net/u/bsomervi/hamlib hamlib
cd hamlib
git checkout integration
Next you must build Hamlib using the MinGW compiler tools bundled with
Qt. As you will build Hamlib again when there are updates you should
set up you Msys2 command line environment for this. I use a
$HOME/.bash_profile file containing these lines:
dll_paths_64bit=/c/Tools/libusb-1.0.23/MinGW64/dll
export PATH=/c/Qt/Tools/mingw810_64/bin:$dll_paths_64bit:$PATH
Test the amended ~/.bash_profile file by opening a new Msys2 shell and
typing:
which gcc
which libusb-1.0.dll
The first time you checkout the Hamlib sources you must bootstrap the
configuration script, this is done with a script at the root of the
Hamlib sources:
cd ~/src/sf/bsomervi/hamlib
./bootstrap
Now you need to configure and build Hamlib from an Msys2 shell. Create
a build directory outside of the Hamlib sources you have just cloned,
then change working directory to that build directory.
mkdir -p ~/build/hamlib/release
cd !$
~/src/sf/bsomervi/hamlib/configure --disable-shared \
--prefix=$HOME/local/hamlib/mingw64/release \
CFLAGS="-DNDEBUG -g -O2 -fdata-sections -ffunction-sections -I/c/Tools/libusb-1.0.23/include" \
CXXFLAGS="-DNDEBUG -g -O2 -fdata-sections -ffunction-sections" \
LDFLAGS="-Wl,--gc-sections" \
LIBUSB_LIBS="-L/c/Tools/libusb-1.0.23/MinGW64/dll -lusb-1.0"
Then build and install the Hamlib package into a local directory:
make & make install-strip
If you wish you can make a debug configuration build of Hamlib which
can be useful if you intended to contribute to the Hamlib project, or
for tracking down issues:
mkdir -p ~/build/hamlib/debug
cd !$
~/src/sf/bsomervi/hamlib/configure --disable-shared \
--prefix=$HOME/local/hamlib/mingw64/debug \
CFLAGS="-g -O0 -I/c/Tools/libusb-1.0.23/include" \
CXXFLAGS="-g -O0" \
LIBUSB_LIBS="-L/c/Tools/libusb-1.0.23/MinGW64/dll -lusb-1.0"
make && make install
To update the Hamlib sources to the latest commit and rebuild:
cd ~/src/sf/bsomervi/hamlib
git pull
cd ~/build/hamlib/release
make & make install-strip
cd ~/build/hamlib/debug
make && make install
Pkg Config Lite
---------------
This package allows the WSJT-X CMake configuration to locate and learn
the options needed to consume the Hamlib package. You can download it
from https://sourceforge.net/projects/pkgconfiglite/files/0.28-1/ and
unzip it into a convenient location, as with other ancillary tools and
libraries I put these under C:\Tools\.
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