update

CMakeLists.txt

@@ -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_LIBRARIES} SDL2_image::SDL2_image)
+target_link_libraries(OpenChess SDL2::SDL2 SDL2_image::SDL2_image)
 
 if (CMAKE_VERSION VERSION_GREATER 3.12)
   set_property(TARGET OpenChess PROPERTY CXX_STANDARD 20)

cmake/modules/FindSDL2.cmake

@@ -1,10 +1,19 @@
-# Locate SDL2 library and include directories
-find_path(SDL2_INCLUDE_DIR NAME SDL.h HINTS ENV SDL2DIR PATH_SUFFIXES include/SDL2 include)
+# FindSDL2.cmake
+# Attempt to find the SDL2 library
 
-find_library(SDL2_LIBRARY NAME SDL2 HINTS ENV SDL2DIR PATH_SUFFIXES lib lib/x64 lib/x86)
+# 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
+             PATHS ${SDL2_PATH})
 
 include(FindPackageHandleStandardArgs)
-find_package_handle_standard_args(SDL2 DEFAULT_MSG SDL2_LIBRARY SDL2_INCLUDE_DIR)
+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)
@@ -14,4 +23,3 @@ if(SDL2_FOUND AND NOT TARGET SDL2::SDL2)
 endif()
 
 mark_as_advanced(SDL2_INCLUDE_DIR SDL2_LIBRARY)
-