diff -Nur uClibc-0.9.30.1.orig/Rules.mak uClibc-0.9.30.1/Rules.mak
--- uClibc-0.9.30.1.orig/Rules.mak	2009-03-02 22:10:04.000000000 +0100
+++ uClibc-0.9.30.1/Rules.mak	2009-05-28 15:08:37.000000000 +0200
@@ -292,7 +292,7 @@
 	CPU_CFLAGS-$(CONFIG_MIPS_ISA_4)+=-mips4 -mtune=mips4
 	CPU_CFLAGS-$(CONFIG_MIPS_ISA_MIPS32)+=-mips32 -mtune=mips32
 	CPU_CFLAGS-$(CONFIG_MIPS_ISA_MIPS32R2)+=-march=mips32r2 -mtune=mips32r2
-	CPU_CFLAGS-$(CONFIG_MIPS_ISA_MIPS64)+=-mips64 -mtune=mips32
+	CPU_CFLAGS-$(CONFIG_MIPS_ISA_MIPS64)+=-mips64
 	ifeq ($(strip $(ARCH_BIG_ENDIAN)),y)
 		CPU_LDFLAGS-$(CONFIG_MIPS_N64_ABI)+=-Wl,-melf64btsmip
 		CPU_LDFLAGS-$(CONFIG_MIPS_O32_ABI)+=-Wl,-melf32btsmip