kbuild: add missing PERL definition
"checkstack" target uses $(PERL) so PERL must be defined.
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
diff --git a/Makefile b/Makefile
index 2fa0966..f80cf40 100644
--- a/Makefile
+++ b/Makefile
@@ -354,6 +354,7 @@
OBJCOPY = $(CROSS_COMPILE)objcopy
OBJDUMP = $(CROSS_COMPILE)objdump
AWK = awk
+PERL = perl
DTC = dtc
CHECK = sparse
@@ -375,7 +376,7 @@
export ARCH CPU BOARD VENDOR SOC CPUDIR BOARDDIR
export CONFIG_SHELL HOSTCC HOSTCFLAGS HOSTLDFLAGS CROSS_COMPILE AS LD CC
export CPP AR NM LDR STRIP OBJCOPY OBJDUMP
-export MAKE AWK
+export MAKE AWK PERL
export DTC CHECK CHECKFLAGS
export KBUILD_CPPFLAGS NOSTDINC_FLAGS UBOOTINCLUDE OBJCOPYFLAGS LDFLAGS