fix

Author: plexoos

.github/workflows/build-pull-request.yaml

@@ -183,7 +183,7 @@ jobs:
         run: |
           docker run --rm --gpus 'device=1' ${{ env.IMAGE_NAME }}:${{ env.IMAGE_TAG }} bash -lc '
             cmake -S $SIMPHONY_HOME/examples -B /tmp/simphony-examples-build
-            cmake --build /tmp/simphony-examples-build
+            cmake --build /tmp/simphony-examples-build --target install
 
             mkdir -p /tmp/simphony-example-run/out && cd /tmp/simphony-example-run
             simphox && test -f out/photons.npy

examples/CMakeLists.txt

@@ -1,11 +1,7 @@
-cmake_minimum_required(VERSION 3.20)
+cmake_minimum_required(VERSION 3.18)
 
 project(simphox LANGUAGES CXX)
 
-set(CMAKE_CXX_STANDARD 17)
-set(CMAKE_CXX_STANDARD_REQUIRED ON)
-set(CMAKE_CXX_EXTENSIONS OFF)
-
 find_package(simphony REQUIRED)
 
 add_executable(simphox simphox.cpp)