Can't build QT5 branch on KDE neon

the git tag is v0.5.0-62-g7ad52cd
cmake version 3.5.1
Using the latest kde/plasma 5 libraries
 hdrmerge % ./build-hdrmerge -b

Program name: hdrmerge
Build type: release
Build without updating: true

Cloning into '/home/micas/programs/code-hdrmerge'...
remote: Counting objects: 2399, done.
remote: Compressing objects: 100% (58/58), done.
remote: Total 2399 (delta 42), reused 63 (delta 30), pack-reused 2311
Receiving objects: 100% (2399/2399), 34.87 MiB | 2.32 MiB/s, done.
Resolving deltas: 100% (1641/1641), done.
Checking connectivity... done.
-- The C compiler identification is GNU 5.4.0
-- The CXX compiler identification is GNU 5.4.0
-- Check for working C compiler: /usr/bin/cc
-- Check for working C compiler: /usr/bin/cc -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Detecting C compile features
-- Detecting C compile features - done
-- Check for working CXX compiler: /usr/bin/c++
-- Check for working CXX compiler: /usr/bin/c++ -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Detecting CXX compile features
-- Detecting CXX compile features - done
CMake Warning at /usr/share/cmake-3.5/Modules/FindQt4.cmake:626 (message):
  /usr/bin/qmake reported QT_INSTALL_LIBS as "/usr/lib/x86_64-linux-gnu" but
  QtCore could not be found there.  Qt is NOT installed correctly for the
  target build environment.
Call Stack (most recent call first):
  CMakeLists.txt:20 (find_package)

CMake Error at /usr/share/cmake-3.5/Modules/FindQt4.cmake:634 (message):
  Could NOT find QtCore.  Check
  /home/micas/programs/code-hdrmerge/build/CMakeFiles/CMakeError.log for more
  details.
Call Stack (most recent call first):
  CMakeLists.txt:20 (find_package)

-- Configuring incomplete, errors occurred!
See also "/home/me/programs/code-hdrmerge/build/CMakeFiles/CMakeOutput.log".
jcelaya / hdrmerge

Can't build QT5 branch on KDE neon #122
