building operon

[yanbing777]

I am completely new to this, I followed your document step by step and when I did the 'make -j pyoperon' step at the end, I got this error, can you please tell me what is the reason? THANKS a lot!!!

• Build command

mkdir build && cd build cmake .. -G "Visual Studio 15 2017" -A x64 -DCMAKE_TOOLCHAIN_FILE=C:/vcpkg/scripts/buildsystems/vcpkg.cmake -DCMAKE_BUILD_TYPE=Release -DBUILD_PYBIND=ON -DUSE_OPENLIBM=ON -DUSE_SINGLE_PRECISION=ON -DCERES_TINY_SOLVER=ON make -j pyoperon

[foolnotion]

Hi, it seems like the pyoperon target is not generated by CMake. Could you post the whole output of the cmake command?

[yanbing777]

Hi, it seems like the pyoperon target is not generated by CMake. Could you post the whole output of the cmake command?

Thanks for your reply, here is my whole output，what I should do?

[foolnotion]

Hi,

I think you are missing the Python libraries which are necessary to build the python module. Normally, CMake should find them and display something like this:

-- Found Python3: /nix/store/k3agmx8hndsfd68cal0m9qc9dnbvfq1i-python3-3.9.6-env/bin/python3.9 (found version "3.9.6") found components: Development Interpreter Development.Module Development.Embed 

Possibly you need to install Python3 via vcpkg install Python3:x64-windows or similar. Apologies, this should have been mentioned in the documentation.

[yanbing777]

Thanks a lot. I tried your suggestion, but vcpkg tells me Python3:x64-windows already exists,

I tried adding my python path to cmake, however the problem still exists

[foolnotion]

To rule out this cause could you make the following change to the CMakeLists.txt file and then re-run cmake?

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 27e5746..f2eceb6 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -40,7 +40,7 @@ set_package_properties(doctest PROPERTIES TYPE OPTIONAL) # unit tests
 set_package_properties(cxxopts PROPERTIES TYPE OPTIONAL) # command-line parser
 
 # python binding
-set_package_properties(Python3 PROPERTIES TYPE OPTIONAL)
+set_package_properties(Python3 PROPERTIES TYPE REQUIRED)
 set_package_properties(pybind11 PROPERTIES TYPE OPTIONAL)
 
 # get revision information from git

This way, if there is a bug in the Python3 port and for some reason CMake can't find it, then it will throw an error.

[yanbing777]

According to your suggestion, I modified the CMakeLists.txt file, not sure if the changes are correct the output is as follows(┯_┯)

[yanbing777]

I made a few more attempts, and this time CMake should find python3 But the problem still exists(┯_┯)

[github-actions[bot]]

This issue is stale because it has been open for 30 days with no activity.

[github-actions[bot]]

This issue was closed because it has been inactive for 14 days since being marked as stale.