kbuild: use Linux Kernel build scripts
Now we are ready to switch over to real Kbuild.
This commit disables temporary scripts:
scripts/{Makefile.build.tmp, Makefile.host.tmp}
and enables real Kbuild scripts:
scripts/{Makefile.build,Makefile.host,Makefile.lib}.
This switch is triggered by the line in scripts/Kbuild.include
-build := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.build.tmp obj
+build := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.build obj
We need to adjust some build scripts for U-Boot.
But smaller amount of modification is preferable.
Additionally, we need to fix compiler flags which are
locally added or removed.
In Kbuild, it is not allowed to change CFLAGS locally.
Instead, ccflags-y, asflags-y, cppflags-y,
CFLAGS_$(basetarget).o, CFLAGS_REMOVE_$(basetarget).o
are prepared for that purpose.
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Tested-by: Gerhard Sittig <gsi@denx.de>
diff --git a/drivers/bios_emulator/Makefile b/drivers/bios_emulator/Makefile
index 330f36f..e56356e 100644
--- a/drivers/bios_emulator/Makefile
+++ b/drivers/bios_emulator/Makefile
@@ -8,8 +8,5 @@
$(X86DIR)/sys.o \
$(X86DIR)/debug.o
-EXTRA_CFLAGS += -I$(srctree)/$(src) -I$(srctree)/$(src)/include \
+ccflags-y := -I$(srctree)/$(src) -I$(srctree)/$(src)/include \
-D__PPC__ -D__BIG_ENDIAN__
-
-CFLAGS += $(EXTRA_CFLAGS)
-CPPFLAGS += $(EXTRA_CFLAGS)
diff --git a/drivers/hwmon/Makefile b/drivers/hwmon/Makefile
index a78a724..25b8e8a 100644
--- a/drivers/hwmon/Makefile
+++ b/drivers/hwmon/Makefile
@@ -8,7 +8,7 @@
# SPDX-License-Identifier: GPL-2.0+
#
-#CFLAGS += -DDEBUG
+#ccflags-y += -DDEBUG
obj-$(CONFIG_DTT_ADM1021) += adm1021.o
obj-$(CONFIG_DTT_ADT7460) += adt7460.o
diff --git a/drivers/net/npe/Makefile b/drivers/net/npe/Makefile
index 0779255..ff554cf 100644
--- a/drivers/net/npe/Makefile
+++ b/drivers/net/npe/Makefile
@@ -5,9 +5,7 @@
# SPDX-License-Identifier: GPL-2.0+
#
-LOCAL_CFLAGS += -I$(TOPDIR)/drivers/net/npe/include -DCONFIG_IXP425_COMPONENT_ETHDB -D__linux
-CFLAGS += $(LOCAL_CFLAGS)
-CPPFLAGS += $(LOCAL_CFLAGS) # needed for depend
+ccflags-y += -I$(src)/include -DCONFIG_IXP425_COMPONENT_ETHDB -D__linux
obj-y := npe.o \
miiphy.o \
diff --git a/drivers/rtc/Makefile b/drivers/rtc/Makefile
index d5a2725..003d322 100644
--- a/drivers/rtc/Makefile
+++ b/drivers/rtc/Makefile
@@ -5,7 +5,7 @@
# SPDX-License-Identifier: GPL-2.0+
#
-#CFLAGS += -DDEBUG
+#ccflags-y += -DDEBUG
obj-$(CONFIG_RTC_AT91SAM9_RTT) += at91sam9_rtt.o
obj-$(CONFIG_RTC_BFIN) += bfin_rtc.o
diff --git a/drivers/usb/musb-new/Makefile b/drivers/usb/musb-new/Makefile
index ba72348..3facf0f 100644
--- a/drivers/usb/musb-new/Makefile
+++ b/drivers/usb/musb-new/Makefile
@@ -9,7 +9,6 @@
obj-$(CONFIG_USB_MUSB_AM35X) += am35x.o
obj-$(CONFIG_USB_MUSB_OMAP2PLUS) += omap2430.o
-CFLAGS_NO_WARN := $(call cc-option,-Wno-unused-variable) \
- $(call cc-option,-Wno-unused-but-set-variable) \
- $(call cc-option,-Wno-unused-label)
-CFLAGS += $(CFLAGS_NO_WARN)
+ccflags-y := $(call cc-option,-Wno-unused-variable) \
+ $(call cc-option,-Wno-unused-but-set-variable) \
+ $(call cc-option,-Wno-unused-label)