Use files in /alt/usr/lib, not /usr/lib.
/* GNU/Linux usually has crt0.o in a non-standard place */
#define START_FILES pre-crt0.o /usr/lib/crt0.o
#else
-#define START_FILES pre-crt0.o /usr/lib/crt1.o /usr/lib/crti.o
+#define START_FILES pre-crt0.o /alt/usr/lib/crt1.o /alt/usr/lib/crti.o
#endif
#ifdef __ELF__
#else
#undef LIB_GCC
#define LIB_GCC
-#define LIB_STANDARD -lgcc -lc -lgcc /usr/lib/crtn.o
+#define LIB_STANDARD -lgcc -lc -lgcc /alt/usr/lib/crtn.o
#endif
/* Don't use -g in test compiles in configure.