HPX runtime workaround for tests

Author: constracktor

src/plssvm/backends/HPX/CMakeLists.txt

@@ -40,7 +40,7 @@ set(PLSSVM_HPX_SOURCES
 # set target properties
 set_local_and_parent(PLSSVM_HPX_BACKEND_LIBRARY_NAME plssvm-HPX)
 add_library(${PLSSVM_HPX_BACKEND_LIBRARY_NAME} SHARED ${PLSSVM_HPX_SOURCES})
-target_link_libraries(${PLSSVM_HPX_BACKEND_LIBRARY_NAME} PUBLIC HPX::hpx)
+target_link_libraries(${PLSSVM_HPX_BACKEND_LIBRARY_NAME} PUBLIC HPX::hpx HPX::wrap_main)
 
 # additional compilation flags
 target_compile_options(${PLSSVM_HPX_BACKEND_LIBRARY_NAME} PRIVATE $<$<COMPILE_LANG_AND_ID:CXX,GNU,Clang>:-Wconversion>)

tests/main.cpp

@@ -15,6 +15,12 @@
 
 #include <cstdlib>  // std::atexit
 
+#if defined(PLSSVM_HAS_HPX_BACKEND)
+    // Workaround as Scope Guard not working properly with Google Test
+    // Run the entire main function in HPX rutime
+    #include <hpx/hpx_main.hpp>
+#endif
+
 // silence GTest warnings/test errors
 
 // generic CSVM tests