Adds -fopenmp flag to omp kernels + adds c++20 omp kernel

CMakeLists.txt

@@ -132,6 +132,10 @@ function(configure_kernel kernel)
   set(XEUS_CPP_RESOURCE_DIR ${CMAKE_INSTALL_PREFIX}/${CMAKE_INSTALL_LIBDIR}/clang/${CPPINTEROP_LLVM_VERSION_MAJOR})
   set(XEUS_CPP_INCLUDE_DIR ${CMAKE_INSTALL_PREFIX}/include)
 
+  if(${kernel} MATCHES "omp/$")
+    set(XEUS_CPP_OMP "-fopenmp")
+  endif()
+
   if (WIN32)
     string(REPLACE "\\" "/" kernel "${kernel}")
     string(REPLACE "\\" "/" XEUS_CPP_PATH "${XEUS_CPP_PATH}")
@@ -162,7 +166,9 @@ message("Configure kernels: ...")
 configure_kernel("/share/jupyter/kernels/xcpp11/")
 configure_kernel("/share/jupyter/kernels/xcpp14/")
 configure_kernel("/share/jupyter/kernels/xcpp17/")
+configure_kernel("/share/jupyter/kernels/xcpp17-omp/")
 configure_kernel("/share/jupyter/kernels/xcpp20/")
+configure_kernel("/share/jupyter/kernels/xcpp20-omp/")
 
 # Source files
 # ============

share/jupyter/kernels/xcpp20-omp/kernel.json.in

@@ -0,0 +1,18 @@
+{
+  "display_name": "C++20 (xcpp+OpenMP)",
+  "env": {
+      "PATH":"@XEUS_CPP_PATH@",
+      "LD_LIBRARY_PATH":"@XEUS_CPP_LD_LIBRARY_PATH@"
+  },
+  "argv": [
+      "@XEUS_CPP_KERNELSPEC_PATH@xcpp",
+      "-f",
+      "{connection_file}",
+      "-resource-dir", "@XEUS_CPP_RESOURCE_DIR@",
+      "-I", "@XEUS_CPP_INCLUDE_DIR@",
+      "-std=c++20"@XEUS_CPP_OMP@
+  ],
+  "language": "cpp",
+  "metadata": {"debugger": false
+  }
+}