Error on building project on Windows - Cannot find CLIPPER LIBRARIES

[tslima]

Hi everyone!

I'm trying to build to build the project in my machine

Windows SDK version 10.0.19041.0 to target Windows 10.0.19043

C compiler identification is MSVC 19.32.31332.0

CXX compiler identification is MSVC 19.32.31332.0

I've already builded and installed Clipper. Also defined an envyroment variable CLIPPER_PATH

But when I try to build the project, I keep getting the following error:

-- Building for: Visual Studio 17 2022
-- Selecting Windows SDK version 10.0.19041.0 to target Windows 10.0.19043.
-- The C compiler identification is MSVC 19.32.31332.0
-- The CXX compiler identification is MSVC 19.32.31332.0
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working C compiler: C:/Program Files/Microsoft Visual Studio/2022/Community/VC/Tools/MSVC/14.32.31326/bin/Hostx64/x64/cl.exe - skipped
-- Detecting C compile features
-- Detecting C compile features - done
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Check for working CXX compiler: C:/Program Files/Microsoft Visual Studio/2022/Community/VC/Tools/MSVC/14.32.31326/bin/Hostx64/x64/cl.exe - skipped
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Looking for pthread.h
-- Looking for pthread.h - not found
-- Found Threads: TRUE
CMake Error at C:/Program Files/CMake/share/cmake-3.23/Modules/FindPackageHandleStandardArgs.cmake:230 (message):
  Clipper library cannot be found.  Consider set CLIPPER_PATH environment
  variable (missing: CLIPPER_INCLUDE_DIRS CLIPPER_LIBRARIES)
Call Stack (most recent call first):
  C:/Program Files/CMake/share/cmake-3.23/Modules/FindPackageHandleStandardArgs.cmake:594 (_FPHSA_FAILURE_MESSAGE)
  cmake_modules/FindClipper.cmake:39 (FIND_PACKAGE_HANDLE_STANDARD_ARGS)
  cmake_modules/RequirePackage.cmake:255 (find_package)
  include/libnest2d/backends/clipper/CMakeLists.txt:3 (require_package)


-- Configuring incomplete, errors occurred!
See also "C:/Users/tslima/Downloads/libnest2d-master/build/CMakeFiles/CMakeOutput.log".
See also "C:/Users/tslima/Downloads/libnest2d-master/build/CMakeFiles/CMakeError.log". 

[KnightYin]

You need to use the Clipper1!
Clipper1

[xqitong]

hi，how to build on windows os? I have a same error

[sagarmemane135]

can someone please tell how to install clipper library on windows machine !

[ioannaMitropoulou]

I have the same problem, I have tried installing all the available clipper versions and set the CLIPPER_PATH to them, but I could not get Cmake to find the files it's looking for. Could you tell us exactly which clipper version is required?

[petrasvestartas]

Clipper 1 was only one .hpp and one .cpp file. I guess the author was working on Linux, and did not bother to write instructions to install libraries for the 3 OS...

There are several ways how you can do this:

1. Link sources files directly to this project CMakeLists
2. Create you own CMakeLists for clipper and build static library, then give a direct path to this project or pass it to environmental variables on windows.

Clipper2 is much more faster and reliable. Clipper one is depreciated. The original author of SVG nest in the end used Boost to directly create Minkowski polygons which is much more faster and reliable than Clipper1.

After looking at the age of this repository, it needs to be updated a bit.