OSX Build problem

I cannot build hugin-2019.2.0 from source.

OSX 10.13.16
uname -a
Darwin Magnus-Larssons-iMac.local 17.7.0 Darwin Kernel Version 17.7.0: Wed May 27 17:00:02 PDT 2020; root:xnu-4570.71.80.1~1/RELEASE_X86_64 x86_64

Error:
Cannot find source file: Hugin.icns
Cannot find source file: PTBatcherGui.icns
No SOURCES given to target: HuginStitchProject
No SOURCES given to target: PTBatcherGUI

Steps to repeat:
0: install prerequisite packages. I used brew for most packages. I built VIGRA from source.
1: download source from https://sourceforge.net/projects/hugin/files/hugin/hugin-2019.2/hugin-2019.2.0.tar.bz2/download
2: tar xvf hugin-2019.2.0.tar.bz2
3: cd hugin-2019.2.0
4: mkdir build
5: cd build
6: cmake -DCMAKE_INSTALL_PREFIX=/Users/magnuslarsson/usr -DVIGRA_LIBRARIES:FILEPATH=/Users/magnuslarsson/usr/lib -DVIGRA_INCLUDE_DIR:PATH=/Users/magnuslarsson/usr/include ..
7: I get a complaint from cmake about missing source files.
<snip>
*** Will install application bundles in /Users/magnuslarsson/usr/Applications, set INSTALL_OSX_BUNDLE_DIR to change the location
-- Using shared internal libraries
-- Current source dir = /Users/magnuslarsson/test/hugin/hugin-2019.2.0
-- Configuring done
CMake Error at src/hugin1/stitch_project/CMakeLists.txt:86 (ADD_EXECUTABLE):
  Cannot find source file:
    Hugin.icns

  Tried extensions .c .C .c++ .cc .cpp .cxx .cu .m .M .mm .h .hh .h++ .hm
  .hpp .hxx .in .txx

CMake Error at src/hugin1/ptbatcher/CMakeLists.txt:136 (ADD_EXECUTABLE):
  Cannot find source file:

    PTBatcherGui.icns

  Tried extensions .c .C .c++ .cc .cpp .cxx .cu .m .M .mm .h .hh .h++ .hm
  .hpp .hxx .in .txx

CMake Error at src/hugin1/stitch_project/CMakeLists.txt:86 (ADD_EXECUTABLE):
  No SOURCES given to target: HuginStitchProject

CMake Error at src/hugin1/ptbatcher/CMakeLists.txt:136 (ADD_EXECUTABLE):
  No SOURCES given to target: PTBatcherGUI

CMake Generate step failed. Build files cannot be regenerated correctly.

*** ***

The files exist. Hugin.icns is here: /Users/magnuslarsson/test/hugin/hugin-2019.2.0/src/hugin1/hugin and PTBatcherGui.icns is here: /Users/magnuslarsson/test/hugin/hugin-2019.2.0/src/hugin1/hugin

How to build on OSX? I checked this: https://wiki.panotools.org/Hugin_Compiling_OSX and installed all prerequisites.

Best regards,

Magnus Larsson