Makefile: compute the version string for all to use

Some packages use the buildroot version string (to set their own version
string). Computing the version string globally will makes it easy for
them to use it instead of re-computing it in every packages.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>

Makefile

@@ -35,6 +35,10 @@ CONFIG_CONFIG_IN=Config.in
 CONFIG=package/config
 DATE:=$(shell date +%Y%m%d)
 
+# Compute the full local version string so packages can use it as-is
+# Need to export it, so it can be got from environment in children (eg. mconf)
+export BR2_VERSION_FULL:=$(BR2_VERSION)$(shell $(TOPDIR)/scripts/setlocalversion)
+
 noconfig_targets:=menuconfig nconfig gconfig xconfig config oldconfig randconfig \
 	defconfig %_defconfig savedefconfig allyesconfig allnoconfig silentoldconfig release \
 	randpackageconfig allyespackageconfig allnopackageconfig \