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 2fa0966c7c830b349fdb51fd8e0ea74d6c035c64..f80cf4071fdc21e4de571ca6b122f7d878c11d00 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -354,6 +354,7 @@ STRIP               = $(CROSS_COMPILE)strip
 OBJCOPY                = $(CROSS_COMPILE)objcopy
 OBJDUMP                = $(CROSS_COMPILE)objdump
 AWK            = awk
+PERL           = perl
 DTC            = dtc
 CHECK          = sparse
 
@@ -375,7 +376,7 @@ export VERSION PATCHLEVEL SUBLEVEL UBOOTRELEASE UBOOTVERSION
 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