[PATCH 1/3] lib/circbuf: Make circbuf selectable symbol

[Loic Poulain]

It is currenly only used from usbtty driver but make it properly
selectable via Kconfig symbol, for future usage.

Signed-off-by: Loic Poulain <loic.poulain at linaro.org>
---
 lib/Kconfig  | 3 +++
 lib/Makefile | 8 +++++++-
 2 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/lib/Kconfig b/lib/Kconfig
index c535147..1bd54d8 100644
--- a/lib/Kconfig
+++ b/lib/Kconfig
@@ -290,6 +290,9 @@ config TRACE_EARLY_ADDR
 	  the size is too small then the message which says the amount of early
 	  data being coped will the the same as the
 
+config CIRCBUF
+        bool
+
 source lib/dhry/Kconfig
 
 menu "Security support"
diff --git a/lib/Makefile b/lib/Makefile
index 8ba745f..4daeee2 100644
--- a/lib/Makefile
+++ b/lib/Makefile
@@ -29,7 +29,13 @@ ifneq ($(CONFIG_CHARSET),)
 obj-y += charset.o
 endif
 endif
-obj-$(CONFIG_USB_TTY) += circbuf.o
+
+ifdef CONFIG_USB_TTY
+obj-y += circbuf.o
+else
+obj-$(CONFIG_CIRCBUF) += circbuf.o
+endif
+
 obj-y += crc8.o
 obj-y += crc16.o
 obj-$(CONFIG_ERRNO_STR) += errno_str.o
-- 
2.7.4