rules.mk: add TARGET_INIT_PATH toplevel variables

Add a new variable TARGET_INIT_PATH which holds the default $PATH variable
value configured in menuconfig.

Signed-off-by: Jo-Philipp Wich <jow@openwrt.org>

SVN-Revision: 48676

rules.mk

@@ -139,6 +139,8 @@ BUILD_DIR_HOST:=$(if $(IS_PACKAGE_BUILD),$(BUILD_DIR)/host,$(BUILD_DIR_BASE)/hos
 STAGING_DIR_HOST:=$(TOPDIR)/staging_dir/host
 
 TARGET_PATH:=$(subst $(space),:,$(filter-out .,$(filter-out ./,$(subst :,$(space),$(PATH)))))
+TARGET_INIT_PATH:=$(call qstrip,$(CONFIG_TARGET_INIT_PATH))
+TARGET_INIT_PATH:=$(if $(TARGET_INIT_PATH),$(TARGET_INIT_PATH),/usr/sbin:/sbin:/usr/bin:/bin)
 TARGET_CFLAGS:=$(TARGET_OPTIMIZATION)$(if $(CONFIG_DEBUG), -g3) $(call qstrip,$(CONFIG_EXTRA_OPTIMIZATION))
 TARGET_CXXFLAGS = $(TARGET_CFLAGS)
 TARGET_ASFLAGS_DEFAULT = $(TARGET_CFLAGS)