Simplify kconfig wording of thread support

Use a choice for thread support selection.

Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
Signed-off-by: Austin Foxley <austinf@cetoncorp.com>

extra/Configs/Config.in

@@ -383,69 +383,41 @@ config LDSO_GNU_HASH_SUPPORT
 
 	  If you want to use this new feature, answer Y
 
-config HAS_NO_THREADS
-	bool
-	default n
-
-config UCLIBC_HAS_THREADS
-	bool "POSIX Threading support"
-	depends on !HAS_NO_THREADS
-	default y
-	# linuxthreads and linuxthreads.old need nanosleep()
-	select UCLIBC_HAS_REALTIME
+choice
+	prompt "Thread support"
+	#default UCLIBC_HAS_THREADS_NATIVE if (TARGET_alpha || TARGET_arm || TARGET_i386 || TARGET_mips || TARGET_powerpc || TARGET_sh || TARGET_sh64)
+	default HAS_NO_THREADS
 	help
 	  If you want to compile uClibc with pthread support, then answer Y.
 	  This will increase the size of uClibc by adding a bunch of locking
 	  to critical data structures, and adding extra code to ensure that
 	  functions are properly reentrant.
 
-	  If your applications require pthreads, answer Y.
-
-config UCLIBC_HAS_TLS
-	bool "Thread-Local Storage"
-	depends on UCLIBC_HAS_THREADS_NATIVE
-	default n
-	help
-	  If you want to enable TLS support then answer Y.
-	  This is fast an efficient way to store per-thread local data
-	  which is not on stack. It needs __thread support enabled in
-	  gcc.
-
-config PTHREADS_DEBUG_SUPPORT
-	bool "Build pthreads debugging support"
-	default n
-	depends on UCLIBC_HAS_THREADS
+config HAS_NO_THREADS
+	bool "none"
 	help
-	  Say Y here if you wish to be able to debug applications that use
-	  uClibc's pthreads library.  By enabling this option, a library
-	  named libthread_db will be built.  This library will be dlopen()'d
-	  by gdb and will allow gdb to debug the threads in your application.
-
-	  IMPORTANT NOTE!  Because gdb must dlopen() the libthread_db library,
-	  you must compile gdb with uClibc in order for pthread debugging to
-	  work properly.
-
-	  If you are doing development and want to debug applications using
-	  uClibc's pthread library, answer Y.  Otherwise, answer N.
+	  Disable thread support.
 
 config LINUXTHREADS_OLD
-	bool "Use the older (stable) version of linuxthreads"
-	default y
-	depends on UCLIBC_HAS_THREADS
+	bool "older (stable) version of linuxthreads"
+	# linuxthreads and linuxthreads.old need nanosleep()
+	select UCLIBC_HAS_REALTIME
 	help
 	  There are two versions of linuxthreads.  The older (stable) version
 	  has been in uClibc for quite a long time but hasn't seen too many
 	  updates other than bugfixes.
 
+
+config LINUXTHREADS_NEW
+	bool "slightly newer version of linuxthreads"
+	help
 	  The new version has not been tested much, and lacks ports for arches
 	  which glibc does not support (like bfin/frv/etc...), but is based on
 	  the latest code from glibc, so it may be the only choice for the
 	  newer ports (like alpha/amd64/64bit arches and hppa).
 
 config UCLIBC_HAS_THREADS_NATIVE
-	bool "Native POSIX Threading (NPTL) Support"
-	depends on UCLIBC_HAS_THREADS
-	default n
+	bool "Native POSIX Threading (NPTL)"
 	select UCLIBC_HAS_TLS
 	help
 	  If you want to compile uClibc with NPTL support, then answer Y.
@@ -464,9 +436,38 @@ config UCLIBC_HAS_THREADS_NATIVE
 	  that way until further notice at which point this notice will
 	  disappear. Thank you for your support and for not smoking.
 
-config LINUXTHREADS_NEW
-	def_bool y
-	depends on UCLIBC_HAS_THREADS && !LINUXTHREADS_OLD && !UCLIBC_HAS_THREADS_NATIVE
+endchoice
+
+config UCLIBC_HAS_THREADS
+	def_bool y if !HAS_NO_THREADS
+
+config UCLIBC_HAS_TLS
+	bool "Thread-Local Storage"
+	depends on UCLIBC_HAS_THREADS_NATIVE
+	default n
+	help
+	  If you want to enable TLS support then answer Y.
+	  This is fast an efficient way to store per-thread local data
+	  which is not on stack. It needs __thread support enabled in
+	  gcc.
+
+config PTHREADS_DEBUG_SUPPORT
+	bool "Build pthreads debugging support"
+	default n
+	depends on UCLIBC_HAS_THREADS
+	help
+	  Say Y here if you wish to be able to debug applications that use
+	  uClibc's pthreads library.  By enabling this option, a library
+	  named libthread_db will be built.  This library will be dlopen()'d
+	  by gdb and will allow gdb to debug the threads in your application.
+
+	  IMPORTANT NOTE!  Because gdb must dlopen() the libthread_db library,
+	  you must compile gdb with uClibc in order for pthread debugging to
+	  work properly.
+
+	  If you are doing development and want to debug applications using
+	  uClibc's pthread library, answer Y.  Otherwise, answer N.
+
 
 config UCLIBC_HAS_SYSLOG
 	bool "Syslog support"