Install and use qwt under macOS

INSTALL_macOS.md

Install and use qwt under macOS^*:

After downloading it from here https://sourceforge.net/projects/qwt/:

cd qwt-6.1.5
mkdir build && cd build
qmake ..
make -j4
sudo make install    # this command install stuff inside /usr/local/

then go build one of the example to make sure it's working. E.g.:

cd examples/bode

make sure the file bode.pro looks like something like this: (I've added the first line and the QT += printsupport)

include( /usr/local/qwt-6.1.5/features/qwt.prf ) # includes QWT libary into Project

TARGET       = bode

QT += printsupport

HEADERS = \
    mainwindow.h \
    plot.h \
    complexnumber.h \ 
    pixmaps.h

SOURCES = \
    plot.cpp \
    mainwindow.cpp \
    main.cpp

then copy the folder qwt.framework to the folder /Library/Frameworks/:

sudo cp -r /usr/local/qwt-6.1.5/lib/qwt.framework /Library/Frameworks/

otherwise you'd get this error when running the program: dyld: Library not loaded: qwt.framework/Versions/6/qwt.

Now you cant actually build the example:

mkdir build && cd build
qmake ..
make -j4

and run it:

./bode.app/Contents/MacOS/bode

---

Sun 25 Oct 2020 10:13:30 CET

@urbanij

^* Tested on macOS Mojave 10.14.6. Assuming your version or qwt is 6.1.5 otherwise change it accordingly.