I have Qt Creator 3.2.1 (based on Qt 5.3.2 - GCC 4.9.1, 32 bit) installed and running on my Beaglebone black. It's running Debian 8 kernel 4.1.17-bone19 which runs the libpruio library nicely. I can compile and run Qt programs no problem. I want to install Qwt 6.1.2. I have already installed libqwt6 using apt-get. I downloaded Qwt 6.1.2, unpacked it, did a qmake5 and it made the makefile. When I run make I get this error:
Qt Code: 
  1. Project ERROR: Unknown module(s) in QT: designer
  2. Makefile:170: recipe for target 'sub-designer-make_first-ordered' failed
  3. make: *** [sub-designer-make_first-ordered] Error 3
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I made the makefile verbose and this is what it choked on:
Qt Code: 
  1. cd designer/ && ( test -e Makefile || /usr/lib/arm-gnueabihf/qt5/bin/qmake /home/debian/Downloads/untard/qwt-6.1.2/designer/designer.pro -o Makefile ) && make -f Makefile
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My suspicion is that it's a path problem. My version of Qt doesn't use Qt designer, it's all rolled into Qt Creator, could that be it? Thanks for making such a great bunch of widgets, it's long overdue that that Qwt get rolled into Qt and the default install.