riscv64: uclibc only static w/o TLS/NPTL

target/config/Config.in.cpu

@@ -1110,16 +1110,18 @@ config ADK_TARGET_CPU_RISCV32_RV32IMAC
 
 config ADK_TARGET_CPU_RISCV64_RV64IMAFDC
 	bool "rv64imafdc"
-	select ADK_TARGET_SUPPORTS_THREADS
-	select ADK_TARGET_SUPPORTS_NPTL
+	select ADK_TARGET_SUPPORTS_THREADS if ADK_TARGET_LIB_GLIBC
+	select ADK_TARGET_SUPPORTS_NPTL if ADK_TARGET_LIB_GLIBC
+	select ADK_TARGET_USE_STATIC_LIBS_ONLY if ADK_TARGET_LIB_UCLIBC_NG
 	select ADK_TARGET_WITH_MMU
 	select ADK_TARGET_ABI_LP64D
 	depends on ADK_TARGET_ARCH_RISCV64
 
 config ADK_TARGET_CPU_RISCV64_RV64IMAC
 	bool "rv64imac"
-	select ADK_TARGET_SUPPORTS_THREADS
-	select ADK_TARGET_SUPPORTS_NPTL
+	select ADK_TARGET_SUPPORTS_THREADS if ADK_TARGET_LIB_GLIBC
+	select ADK_TARGET_SUPPORTS_NPTL if ADK_TARGET_LIB_GLIBC
+	select ADK_TARGET_USE_STATIC_LIBS_ONLY if ADK_TARGET_LIB_UCLIBC_NG
 	select ADK_TARGET_WITH_MMU
 	select ADK_TARGET_ABI_LP64
 	depends on ADK_TARGET_ARCH_RISCV64