updates on cmake

CMakeLists.txt

@@ -7,7 +7,7 @@ project ("OpenChess")
 
 set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_SOURCE_DIR}/cmake/modules/")
 
-find_package(SDL2 REQUIRED)
+find_package(SDL2 REQUIRED CONFIG)
 find_package(SDL2_image REQUIRED)
 
 # Print the variables to see their values
@@ -17,7 +17,7 @@ include_directories(Board Pieces)
 # Add source to this project's executable.
 add_executable (OpenChess "main.cpp"  "Pieces/Piece.h" "Pieces/King.h" "Pieces/King.cpp" "Pieces/Rook.h" "Pieces/Rook.cpp" "Pieces/Queen.h" "Pieces/Queen.cpp" "Pieces/Pawn.h" "Pieces/Pawn.cpp" "Pieces/Bishop.h" "Pieces/Bishop.cpp" "Pieces/Knight.h" "Pieces/Knight.cpp" "Board/Board.cpp" "Board/Board.h" "ChessSDL.cpp" "ChessSDL.h" "Pieces/Piece.cpp")
 
-target_link_libraries(OpenChess SDL2::SDL2 SDL2_image::SDL2_image)
+target_link_libraries(OpenChess ${SDL2_LIBRARIES} SDL2_image::SDL2_image)
 
 if (CMAKE_VERSION VERSION_GREATER 3.12)
   set_property(TARGET OpenChess PROPERTY CXX_STANDARD 20)

cmake/modules/FindSDL2.cmake

@@ -1,12 +1,7 @@
-# FindSDL2.cmake
-# Attempt to find the SDL2 library
-
-# Look for the header file.
 find_path(SDL2_INCLUDE_DIR NAME SDL.h
           HINTS $ENV{SDL2DIR}
           PATH_SUFFIXES SDL2 include/SDL2 include)
 
-# Look for the library.
 find_library(SDL2_LIBRARY NAME SDL2
              HINTS $ENV{SDL2DIR}
              PATH_SUFFIXES lib64 lib32 lib
@@ -16,10 +11,16 @@ include(FindPackageHandleStandardArgs)
 find_package_handle_standard_args(SDL2 REQUIRED_VARS SDL2_LIBRARY SDL2_INCLUDE_DIR)
 
 if(SDL2_FOUND AND NOT TARGET SDL2::SDL2)
-    add_library(SDL2::SDL2 UNKNOWN IMPORTED)
+    add_library(SDL2::SDL2 SHARED IMPORTED)
     set_target_properties(SDL2::SDL2 PROPERTIES
         IMPORTED_LOCATION "${SDL2_LIBRARY}"
         INTERFACE_INCLUDE_DIRECTORIES "${SDL2_INCLUDE_DIR}")
 endif()
 
+if(EXISTS "${SDL2_LIBRARY}" AND EXISTS "${SDL2_INCLUDE_DIR}")
+    set(SDL2_SDL2_FOUND TRUE)
+else()
+    set(SDL2_SDL2_FOUND FALSE)
+endif()
+
 mark_as_advanced(SDL2_INCLUDE_DIR SDL2_LIBRARY)