Fix some ngspice handling during build for MSVC

cmake/Findngspice.cmake

@@ -125,6 +125,14 @@ if( WIN32 AND MSYS )
     else()
         message( STATUS ": libngspice shared lib found: ${NGSPICE_DLL}\n" )
     endif()
+elseif( WIN32 AND MSVC )
+    find_file( NGSPICE_DLL NAMES ngspice.dll 
+            PATHS
+                ${NGSPICE_ROOT_DIR}
+            PATH_SUFFIXES
+                bin
+                lib
+            )
 else()
     set( NGSPICE_DLL "${NGSPICE_LIBRARY}" )
 endif()

eeschema/CMakeLists.txt

@@ -474,6 +474,13 @@ if( KICAD_SPICE )
         PRIVATE
             ${NGSPICE_LIBRARY}
         )
+
+    if( MSVC )
+        # Allow for MSVC to debug ngspice from the build directory
+        add_custom_command( TARGET eeschema_kiface POST_BUILD
+            COMMAND ${CMAKE_COMMAND} -E copy_if_different "${NGSPICE_DLL}" "$<TARGET_FILE_DIR:eeschema_kiface>"
+            )
+    endif()
 endif()
 
 set_target_properties( eeschema_kiface PROPERTIES

qa/unittests/eeschema/CMakeLists.txt

@@ -99,6 +99,7 @@ add_executable( qa_eeschema
 )
 
 target_link_libraries( qa_eeschema
+PRIVATE
     eeschema_kiface_objects
     common
     pcbcommon
@@ -110,6 +111,14 @@ target_link_libraries( qa_eeschema
     ${Boost_LIBRARIES}
 )
 
+if( KICAD_SPICE AND MSVC )
+    # Allow for MSVC to run from the build directory
+    add_custom_command( TARGET qa_eeschema POST_BUILD
+        COMMAND ${CMAKE_COMMAND} -E copy_if_different "${NGSPICE_DLL}" "$<TARGET_FILE_DIR:qa_eeschema>"
+        )
+endif()
+
+
 # Eeschema tests, so pretend to be eeschema (for units, etc)
 target_compile_definitions( qa_eeschema
     PUBLIC EESCHEMA