fix sh3 toolchain building

target/config/Config.in.cpu

@@ -623,6 +623,7 @@ config ADK_CPU_SH2A
 
 config ADK_CPU_SH3
 	bool
+	select ADK_TARGET_WITH_NPTL
 	select ADK_TARGET_WITH_MMU
 
 config ADK_CPU_SH4
@@ -963,7 +964,8 @@ config ADK_TARGET_CPU_ARCH
 	default "s390x" if ADK_TARGET_ARCH_S390
 	default "sh2" if ADK_CPU_SH2
 	default "sh2a" if ADK_CPU_SH2A
-	default "sh3" if ADK_CPU_SH3
+	default "sh3" if ADK_CPU_SH3 && ADK_TARGET_LITTLE_ENDIAN
+	default "sh3eb" if ADK_CPU_SH3 && ADK_TARGET_BIG_ENDIAN
 	default "sh4" if ADK_CPU_SH4 && ADK_TARGET_LITTLE_ENDIAN
 	default "sh4eb" if ADK_CPU_SH4 && ADK_TARGET_BIG_ENDIAN
 	default "sh4a" if ADK_CPU_SH4A && ADK_TARGET_LITTLE_ENDIAN

toolchain/gcc/Makefile

@@ -207,6 +207,9 @@ endif
 	(cd $(TOOLCHAIN_DIR)/usr/$(GNU_TARGET_NAME); \
 		ln -s ../$(STAGING_HOST2TARGET)/lib lib)
 ifeq ($(ADK_TARGET_ARCH_SH),y)
+ifeq ($(ADK_CPU_SH3),y)
+	(cd ${STAGING_TARGET_DIR}/ && ln -sf . m3)
+endif
 ifeq ($(ADK_CPU_SH4),y)
 	(cd ${STAGING_TARGET_DIR}/ && ln -sf . m4)
 endif