kbuild: allow empty board directories
U-Boot has compelled all boards to have
board/${BOARD}/ or board/${VENDOR}/${BOARD}/ directory.
Sometimes it does not seem suitable for some boards,
for example Sandbox. (Is it a board?)
And arcangel4 board has nothing to compile
under the board directory.
This commit makes the build system more flexible:
If '<none>' is given to the 6th column (=Board name) of boards.cfg,
Kbuild will not descend into the board directory.
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
diff --git a/Makefile b/Makefile
index 36de8d4..ecac292 100644
--- a/Makefile
+++ b/Makefile
@@ -636,7 +636,7 @@
libs-$(CONFIG_ARM) += arch/arm/cpu/
libs-$(CONFIG_PPC) += arch/powerpc/cpu/
-libs-y += board/$(BOARDDIR)/
+libs-y += $(if $(BOARDDIR),board/$(BOARDDIR)/)
libs-y := $(sort $(libs-y))
diff --git a/config.mk b/config.mk
index e59697f..af25c11 100644
--- a/config.mk
+++ b/config.mk
@@ -28,11 +28,13 @@
ifdef SOC
sinclude $(TOPDIR)/$(CPUDIR)/$(SOC)/config.mk # include SoC specific rules
endif
+ifneq ($(BOARD),)
ifdef VENDOR
BOARDDIR = $(VENDOR)/$(BOARD)
else
BOARDDIR = $(BOARD)
endif
+endif
ifdef BOARD
sinclude $(TOPDIR)/board/$(BOARDDIR)/config.mk # include board specific rules
endif
diff --git a/mkconfig b/mkconfig
index 5f516f2..9827e4d 100755
--- a/mkconfig
+++ b/mkconfig
@@ -55,7 +55,9 @@
arch="$2"
cpu=`echo $3 | awk 'BEGIN {FS = ":"} ; {print $1}'`
spl_cpu=`echo $3 | awk 'BEGIN {FS = ":"} ; {print $2}'`
-if [ "$6" = "-" ] ; then
+if [ "$6" = "<none>" ] ; then
+ board=
+elif [ "$6" = "-" ] ; then
board=${BOARD_NAME}
else
board="$6"
@@ -177,8 +179,8 @@
[ "${soc}" ] && echo "#define CONFIG_SYS_SOC \"${soc}\"" >> config.h
+[ "${board}" ] && echo "#define CONFIG_BOARDDIR board/$BOARDDIR" >> config.h
cat << EOF >> config.h
-#define CONFIG_BOARDDIR board/$BOARDDIR
#include <config_cmd_defaults.h>
#include <config_defaults.h>
#include <configs/${CONFIG_NAME}.h>