Build everything as C++ (#1176)

include/link/object.hpp

@@ -0,0 +1,36 @@
+/* SPDX-License-Identifier: MIT */
+
+// Declarations related to processing of object (.o) files
+
+#ifndef RGBDS_LINK_OBJECT_H
+#define RGBDS_LINK_OBJECT_H
+
+/*
+ * Read an object (.o) file, and add its info to the data structures.
+ * @param fileName A path to the object file to be read
+ * @param i The ID of the file
+ */
+void obj_ReadFile(char const *fileName, unsigned int i);
+
+/*
+ * Perform validation on the object files' contents
+ */
+void obj_DoSanityChecks(void);
+
+/*
+ * Evaluate all assertions
+ */
+void obj_CheckAssertions(void);
+
+/*
+ * Sets up object file reading
+ * @param nbFiles The number of object files that will be read
+ */
+void obj_Setup(unsigned int nbFiles);
+
+/*
+ * `free`s all object memory that was allocated.
+ */
+void obj_Cleanup(void);
+
+#endif // RGBDS_LINK_OBJECT_H