uclibc: add a special Xtensa version

Currently, the Xtensa architecture uses the "snapshot" version of
uClibc. This means that the build is not reproducible, since it will
pick whatever latest version of uClibc is available at the moment of
the build.

This commit replaces that by adding a special Xtensa version, which
points to a well-known Git commit. This is something we should
hopefully be able to remove once the uClibc people realize that doing
a 0.9.34 release would be useful.

Should probably fix:

  http://autobuild.buildroot.org/results/5d6/5d6072a038acf894d832704e36c1d43f0254abf5/build-end.log

at least I wasn't able to reproduce the build problem.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
[baruch: use a more recent uClibc version]
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/uclibc/Config.in

@@ -20,6 +20,10 @@ choice
 		bool "uClibc 0.9.33.x"
 		depends on !(BR2_arc || BR2_avr32 || BR2_xtensa)
 
+	config BR2_UCLIBC_VERSION_XTENSA_GIT
+		bool "uClibc Git Xtensa"
+		depends on BR2_xtensa
+
 	config BR2_UCLIBC_VERSION_SNAPSHOT
 		bool "daily snapshot"
 		depends on !(BR2_arc)
@@ -39,6 +43,7 @@ config BR2_UCLIBC_VERSION_STRING
 	default 0.9.32.1	if BR2_UCLIBC_VERSION_0_9_32
 	default 0.9.33.2	if BR2_UCLIBC_VERSION_0_9_33
 	default "9f0f466d3b17181ce88be36ce24a775774fe686c" if BR2_arc
+	default "3a3ad3dfc10876b3648369f22df8fc06661ddef0" if BR2_UCLIBC_VERSION_XTENSA_GIT
 	default BR2_USE_UCLIBC_SNAPSHOT	if BR2_UCLIBC_VERSION_SNAPSHOT
 
 config BR2_UCLIBC_CONFIG
@@ -48,6 +53,7 @@ config BR2_UCLIBC_CONFIG
 	default "package/uclibc/uClibc-0.9.33.config" if BR2_UCLIBC_VERSION_0_9_33
 	default "package/uclibc/uClibc-snapshot.config" if BR2_arc
 	default "package/uclibc/uClibc-snapshot.config" if BR2_UCLIBC_VERSION_SNAPSHOT
+	default "package/uclibc/uClibc-snapshot.config" if BR2_UCLIBC_VERSION_XTENSA_GIT
 	help
 	  Some people may wish to use their own modified uClibc configuration
 	  file and will specify their config file location with this option.

package/uclibc/uclibc.mk

@@ -12,6 +12,9 @@ UCLIBC_SITE = http://www.uclibc.org/downloads/snapshots
 else ifeq ($(BR2_arc),y)
 UCLIBC_SITE = $(call github,foss-for-synopsys-dwc-arc-processors,uClibc,$(UCLIBC_VERSION))
 UCLIBC_SOURCE = uClibc-$(UCLIBC_VERSION).tar.gz
+else ifeq ($(BR2_UCLIBC_VERSION_XTENSA_GIT),y)
+UCLIBC_SITE = git://git.busybox.net/uClibc
+UCLIBC_SOURCE = uClibc-$(UCLIBC_VERSION).tar.gz
 else
 UCLIBC_SITE = http://www.uclibc.org/downloads
 UCLIBC_SOURCE = uClibc-$(UCLIBC_VERSION).tar.xz