Building a project that uses Qt fails

[Pierre Abbat]

I reinstalled packages git, cmake, qt5-core, qt5-gui, qt5-linguist, xorg, and 
fftw3, which (except fftw3 which is optional) are required for building 
Bezitopo. I then tried to build PerfectTIN, which is similar, and got errors. 
One was from Qt and looks like this:

CMake Error at /usr/local/lib/cmake/Qt5Gui/Qt5Gui_QICNSPlugin.cmake:4 
(_populate_Gui_plugin_properties):
  _populate_Gui_plugin_properties Macro invoked with incorrect arguments for
  macro named: _populate_Gui_plugin_properties
Call Stack (most recent call first):
  /usr/local/lib/cmake/Qt5Gui/Qt5GuiConfig.cmake:201 (include)
  /usr/local/lib/cmake/Qt5Widgets/Qt5WidgetsConfig.cmake:100 (find_package)
  /usr/local/lib/cmake/Qt5/Qt5Config.cmake:28 (find_package)
  CMakeLists.txt:50 (find_package)

CMake Error at /usr/local/lib/cmake/Qt5Gui/Qt5Gui_QJp2Plugin.cmake:4 
(_populate_Gui_plugin_properties):
  _populate_Gui_plugin_properties Macro invoked with incorrect arguments for
  macro named: _populate_Gui_plugin_properties
Call Stack (most recent call first):
  /usr/local/lib/cmake/Qt5Gui/Qt5GuiConfig.cmake:201 (include)
  /usr/local/lib/cmake/Qt5Widgets/Qt5WidgetsConfig.cmake:100 (find_package)
  /usr/local/lib/cmake/Qt5/Qt5Config.cmake:28 (find_package)
  CMakeLists.txt:50 (find_package)

The other is from pthread (PerfectTIN uses threads, which Bezitopo does not 
yet) and is in the attached file.

I can tell which binaries in /usr/local/bin are left over from previous 
packages whose package database was lost; they're for DragonFly 4.0.105, 
5.0.500, or 5.0.601, instead of the current 5.0.900. But libraries in /usr/
local/lib do not have an ABI version (as far as I can tell with the file 
command). How can I find these obsolete files and get rid of them?

Or is there another package I need to install? The repos are at https://
github.com/phma/perfecttin and https://github.com/phma/bezitopo if you'd like 
to try building them.

PerfectTIN uses Boost, but can build without it.

Pierre
-- 
gau do li'i co'e kei do
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