Fix CMake generated artifact location

CMakeLists.txt

@@ -70,7 +70,7 @@ endif()
 
 add_custom_command(
     OUTPUT repl.c
-    COMMAND "${CMAKE_BINARY_DIR}/qjsc" -c -o ./repl.c -m ${CMAKE_CURRENT_SOURCE_DIR}/repl.js
+    COMMAND "${CMAKE_CURRENT_BINARY_DIR}/qjsc" -c -o ./repl.c -m ${CMAKE_CURRENT_SOURCE_DIR}/repl.js
     DEPENDS qjsc
     WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
     COMMENT "Compile repl.js to bytecode"
@@ -94,7 +94,7 @@ endif()
 add_executable(qjs_exe
     qjs.c
     quickjs-libc.c
-    ${CMAKE_BINARY_DIR}/repl.c
+    ${CMAKE_CURRENT_BINARY_DIR}/repl.c
 )
 set_target_properties(qjs_exe PROPERTIES
     OUTPUT_NAME "qjs"