micro: set PREFERRED_ARM_INSTRUCTION_SET weakly so local.conf can

override

diff --git a/conf/distro/micro.conf b/conf/distro/micro.conf
index 5ee6f9b..43b00f7 100644 (file)
--- a/conf/distro/micro.conf
+++ b/conf/distro/micro.conf
@@ -62,7 +62,7 @@ MACHINE_KERNEL_VERSION = "2.6"
 #############################################################################
 LIBC ?= "eglibc"
 PREFERRED_BINUTILS = "2.19.51"
-PREFERRED_ARM_INSTRUCTION_SET = "thumb"
+PREFERRED_ARM_INSTRUCTION_SET ?= "thumb"
 require conf/distro/include/sane-toolchain.inc
 
 #############################################################################