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>

12 files changed, 60 insertions, 48 deletions

diff --git a/nand_spl/board/amcc/acadia/Makefile b/nand_spl/board/amcc/acadia/Makefile
index 041213f334..d256abf9e1 100644
--- a/nand_spl/board/amcc/acadia/Makefile
+++ b/nand_spl/board/amcc/acadia/Makefile
@@ -12,17 +12,18 @@ nandobj	:= $(OBJTREE)/nand_spl/
 LDSCRIPT= $(TOPDIR)/nand_spl/board/$(BOARDDIR)/u-boot.lds
 LDFLAGS := -T $(nandobj)u-boot.lds -Ttext $(CONFIG_SYS_TEXT_BASE) $(LDFLAGS) \
 	   $(LDFLAGS_FINAL)
-AFLAGS	+= -DCONFIG_NAND_SPL
-CFLAGS	+= -DCONFIG_NAND_SPL
+asflags-y += -DCONFIG_NAND_SPL
+ccflags-y += -DCONFIG_NAND_SPL
 
 SOBJS	= start.o resetvec.o cache.o
 COBJS	= gpio.o nand_boot.o nand_ecc.o memory.o ndfc.o pll.o
 
-SRCS	:= $(addprefix $(obj)/,$(SOBJS:.o=.S) $(COBJS:.o=.c))
 OBJS	:= $(addprefix $(obj)/,$(SOBJS) $(COBJS))
 __OBJS	:= $(SOBJS) $(COBJS)
 LNDIR	:= $(nandobj)board/$(BOARDDIR)
 
+targets += $(__OBJS)
+
 all: $(nandobj)u-boot-spl.bin $(nandobj)u-boot-spl-16k.bin \
 	$(nandobj)System.map
 
@@ -42,7 +43,7 @@ $(nandobj)System.map:	$(nandobj)u-boot-spl
 		sort > $@
 
 $(nandobj)u-boot.lds: $(LDSCRIPT)
-	$(CPP) $(CPPFLAGS) $(LDPPFLAGS) -ansi -D__ASSEMBLY__ -P - <$^ >$@
+	$(CPP) $(cpp_flags) $(LDPPFLAGS) -ansi -D__ASSEMBLY__ -P - <$^ >$@
 
 # create symbolic links for common files
 
diff --git a/nand_spl/board/amcc/bamboo/Makefile b/nand_spl/board/amcc/bamboo/Makefile
index 92b604e9f5..4f36d6c882 100644
--- a/nand_spl/board/amcc/bamboo/Makefile
+++ b/nand_spl/board/amcc/bamboo/Makefile
@@ -12,17 +12,18 @@ nandobj	:= $(OBJTREE)/nand_spl/
 LDSCRIPT= $(TOPDIR)/nand_spl/board/$(BOARDDIR)/u-boot.lds
 LDFLAGS := -T $(nandobj)u-boot.lds -Ttext $(CONFIG_SYS_TEXT_BASE) $(LDFLAGS) \
 	   $(LDFLAGS_FINAL)
-AFLAGS	+= -DCONFIG_NAND_SPL
-CFLAGS	+= -DCONFIG_NAND_SPL
+asflags-y += -DCONFIG_NAND_SPL
+ccflags-y += -DCONFIG_NAND_SPL
 
 SOBJS	= start.o init.o resetvec.o
 COBJS	= nand_boot.o nand_ecc.o ndfc.o sdram.o
 
-SRCS	:= $(addprefix $(obj)/,$(SOBJS:.o=.S) $(COBJS:.o=.c))
 OBJS	:= $(addprefix $(obj)/,$(SOBJS) $(COBJS))
 __OBJS	:= $(SOBJS) $(COBJS)
 LNDIR	:= $(nandobj)board/$(BOARDDIR)
 
+targets += $(__OBJS)
+
 all: $(nandobj)u-boot-spl.bin $(nandobj)u-boot-spl-16k.bin
 
 $(nandobj)u-boot-spl-16k.bin: $(nandobj)u-boot-spl
@@ -36,7 +37,7 @@ $(nandobj)u-boot-spl:	$(OBJS) $(nandobj)u-boot.lds
 		-Map $(nandobj)u-boot-spl.map -o $@
 
 $(nandobj)u-boot.lds: $(LDSCRIPT)
-	$(CPP) $(CPPFLAGS) $(LDPPFLAGS) -ansi -D__ASSEMBLY__ -P - <$^ >$@
+	$(CPP) $(cpp_flags) $(LDPPFLAGS) -ansi -D__ASSEMBLY__ -P - <$^ >$@
 
 # create symbolic links for common files
 
diff --git a/nand_spl/board/amcc/canyonlands/Makefile b/nand_spl/board/amcc/canyonlands/Makefile
index 9a730e95f5..5c9c8e83ed 100644
--- a/nand_spl/board/amcc/canyonlands/Makefile
+++ b/nand_spl/board/amcc/canyonlands/Makefile
@@ -12,8 +12,8 @@ nandobj	:= $(OBJTREE)/nand_spl/
 LDSCRIPT= $(TOPDIR)/nand_spl/board/$(BOARDDIR)/u-boot.lds
 LDFLAGS := -T $(nandobj)u-boot.lds -Ttext $(CONFIG_SYS_TEXT_BASE) $(LDFLAGS) \
 	   $(LDFLAGS_FINAL)
-AFLAGS	+= -DCONFIG_NAND_SPL
-CFLAGS	+= -DCONFIG_NAND_SPL
+asflags-y += -DCONFIG_NAND_SPL
+ccflags-y += -DCONFIG_NAND_SPL
 
 SOBJS	:= start.o
 SOBJS	+= init.o
@@ -23,11 +23,12 @@ COBJS	+= nand_boot.o
 COBJS	+= nand_ecc.o
 COBJS	+= ndfc.o
 
-SRCS	:= $(addprefix $(obj)/,$(SOBJS:.o=.S) $(COBJS:.o=.c))
 OBJS	:= $(addprefix $(obj)/,$(SOBJS) $(COBJS))
 __OBJS	:= $(SOBJS) $(COBJS)
 LNDIR	:= $(nandobj)board/$(BOARDDIR)
 
+targets += $(__OBJS)
+
 all: $(nandobj)u-boot-spl.bin $(nandobj)u-boot-spl-16k.bin
 
 $(nandobj)u-boot-spl-16k.bin: $(nandobj)u-boot-spl
@@ -41,7 +42,7 @@ $(nandobj)u-boot-spl:	$(OBJS) $(nandobj)u-boot.lds
 		-Map $(nandobj)u-boot-spl.map -o $@
 
 $(nandobj)u-boot.lds: $(LDSCRIPT)
-	$(CPP) $(CPPFLAGS) $(LDPPFLAGS) -ansi -D__ASSEMBLY__ -P - <$^ >$@
+	$(CPP) $(cpp_flags) $(LDPPFLAGS) -ansi -D__ASSEMBLY__ -P - <$^ >$@
 
 # create symbolic links for common files
 
diff --git a/nand_spl/board/amcc/kilauea/Makefile b/nand_spl/board/amcc/kilauea/Makefile
index 1c5498cfa5..cfe308222b 100644
--- a/nand_spl/board/amcc/kilauea/Makefile
+++ b/nand_spl/board/amcc/kilauea/Makefile
@@ -12,17 +12,18 @@ nandobj	:= $(OBJTREE)/nand_spl/
 LDSCRIPT= $(TOPDIR)/nand_spl/board/$(BOARDDIR)/u-boot.lds
 LDFLAGS := -T $(nandobj)u-boot.lds -Ttext $(CONFIG_SYS_TEXT_BASE) $(LDFLAGS) \
 	   $(LDFLAGS_FINAL)
-AFLAGS	+= -DCONFIG_NAND_SPL
-CFLAGS	+= -DCONFIG_NAND_SPL
+asflags-y += -DCONFIG_NAND_SPL
+ccflags-y += -DCONFIG_NAND_SPL
 
 SOBJS	= start.o resetvec.o cache.o
 COBJS	= 44x_spd_ddr2.o nand_boot.o nand_ecc.o ndfc.o
 
-SRCS	:= $(addprefix $(obj)/,$(SOBJS:.o=.S) $(COBJS:.o=.c))
 OBJS	:= $(addprefix $(obj)/,$(SOBJS) $(COBJS))
 __OBJS	:= $(SOBJS) $(COBJS)
 LNDIR	:= $(nandobj)board/$(BOARDDIR)
 
+targets += $(__OBJS)
+
 all: $(nandobj)u-boot-spl.bin $(nandobj)u-boot-spl-16k.bin
 
 $(nandobj)u-boot-spl-16k.bin: $(nandobj)u-boot-spl
@@ -36,7 +37,7 @@ $(nandobj)u-boot-spl:	$(OBJS) $(nandobj)u-boot.lds
 		-Map $(nandobj)u-boot-spl.map -o $@
 
 $(nandobj)u-boot.lds: $(LDSCRIPT)
-	$(CPP) $(CPPFLAGS) $(LDPPFLAGS) -ansi -D__ASSEMBLY__ -P - <$^ >$@
+	$(CPP) $(cpp_flags) $(LDPPFLAGS) -ansi -D__ASSEMBLY__ -P - <$^ >$@
 
 # create symbolic links for common files
 
diff --git a/nand_spl/board/amcc/sequoia/Makefile b/nand_spl/board/amcc/sequoia/Makefile
index 62131ab399..de02886b29 100644
--- a/nand_spl/board/amcc/sequoia/Makefile
+++ b/nand_spl/board/amcc/sequoia/Makefile
@@ -12,17 +12,18 @@ nandobj	:= $(OBJTREE)/nand_spl/
 LDSCRIPT= $(TOPDIR)/nand_spl/board/$(BOARDDIR)/u-boot.lds
 LDFLAGS := -T $(nandobj)u-boot.lds -Ttext $(CONFIG_SYS_TEXT_BASE) $(LDFLAGS) \
 	   $(LDFLAGS_FINAL)
-AFLAGS	+= -DCONFIG_NAND_SPL
-CFLAGS	+= -DCONFIG_NAND_SPL
+asflags-y += -DCONFIG_NAND_SPL
+ccflags-y += -DCONFIG_NAND_SPL
 
 SOBJS	= start.o init.o resetvec.o
 COBJS	= denali_data_eye.o nand_boot.o nand_ecc.o ndfc.o sdram.o
 
-SRCS	:= $(addprefix $(obj)/,$(SOBJS:.o=.S) $(COBJS:.o=.c))
 OBJS	:= $(addprefix $(obj)/,$(SOBJS) $(COBJS))
 __OBJS	:= $(SOBJS) $(COBJS)
 LNDIR	:= $(nandobj)board/$(BOARDDIR)
 
+targets += $(__OBJS)
+
 all: $(nandobj)u-boot-spl.bin $(nandobj)u-boot-spl-16k.bin
 
 $(nandobj)u-boot-spl-16k.bin: $(nandobj)u-boot-spl
@@ -36,7 +37,7 @@ $(nandobj)u-boot-spl:	$(OBJS) $(nandobj)u-boot.lds
 		-Map $(nandobj)u-boot-spl.map -o $@
 
 $(nandobj)u-boot.lds: $(LDSCRIPT)
-	$(CPP) $(CPPFLAGS) $(LDPPFLAGS) -ansi -D__ASSEMBLY__ -P - <$^ >$@
+	$(CPP) $(cpp_flags) $(LDPPFLAGS) -ansi -D__ASSEMBLY__ -P - <$^ >$@
 
 # create symbolic links for common files
 
diff --git a/nand_spl/board/freescale/mpc8315erdb/Makefile b/nand_spl/board/freescale/mpc8315erdb/Makefile
index a2054ee1ab..a68567427e 100644
--- a/nand_spl/board/freescale/mpc8315erdb/Makefile
+++ b/nand_spl/board/freescale/mpc8315erdb/Makefile
@@ -13,18 +13,19 @@ nandobj	:= $(OBJTREE)/nand_spl/
 LDSCRIPT= $(TOPDIR)/nand_spl/board/$(BOARDDIR)/u-boot.lds
 LDFLAGS := -T $(nandobj)u-boot.lds -Ttext $(CONFIG_SYS_TEXT_BASE_SPL) \
 	   $(LDFLAGS) $(LDFLAGS_FINAL)
-AFLAGS	+= -DCONFIG_NAND_SPL
-CFLAGS	+= -DCONFIG_NAND_SPL
+asflags-y += -DCONFIG_NAND_SPL
+ccflags-y += -DCONFIG_NAND_SPL
 
 SOBJS	= start.o ticks.o
 COBJS	= nand_boot_fsl_elbc.o $(BOARD).o sdram.o ns16550.o spl_minimal.o \
 	  time.o cache.o
 
-SRCS	:= $(addprefix $(obj)/,$(SOBJS:.o=.S) $(COBJS:.o=.c))
 OBJS	:= $(addprefix $(obj)/,$(SOBJS) $(COBJS))
 __OBJS	:= $(SOBJS) $(COBJS)
 LNDIR	:= $(nandobj)board/$(BOARDDIR)
 
+targets += $(__OBJS)
+
 all: $(nandobj)u-boot-spl.bin $(nandobj)u-boot-spl-16k.bin
 
 $(nandobj)u-boot-spl-16k.bin: $(nandobj)u-boot-spl
@@ -38,7 +39,7 @@ $(nandobj)u-boot-spl:	$(OBJS) $(nandobj)u-boot.lds
 		-Map $(nandobj)u-boot-spl.map -o $@
 
 $(nandobj)u-boot.lds: $(LDSCRIPT)
-	$(CPP) $(CPPFLAGS) $(LDPPFLAGS) -ansi -D__ASSEMBLY__ -P - <$^ >$@
+	$(CPP) $(cpp_flags) $(LDPPFLAGS) -ansi -D__ASSEMBLY__ -P - <$^ >$@
 
 # create symbolic links for common files
 
diff --git a/nand_spl/board/freescale/mpc8536ds/Makefile b/nand_spl/board/freescale/mpc8536ds/Makefile
index f711cf30ba..f0beaedf1a 100644
--- a/nand_spl/board/freescale/mpc8536ds/Makefile
+++ b/nand_spl/board/freescale/mpc8536ds/Makefile
@@ -15,18 +15,19 @@ nandobj	:= $(OBJTREE)/nand_spl/
 LDSCRIPT= $(TOPDIR)/$(CPUDIR)/u-boot-nand_spl.lds
 LDFLAGS := -T $(nandobj)u-boot-nand_spl.lds -Ttext $(CONFIG_SYS_TEXT_BASE_SPL) \
 		$(LDFLAGS) $(LDFLAGS_FINAL)
-AFLAGS	+= -DCONFIG_NAND_SPL
-CFLAGS	+= -DCONFIG_NAND_SPL
+asflags-y += -DCONFIG_NAND_SPL
+ccflags-y += -DCONFIG_NAND_SPL
 
 SOBJS	= start.o resetvec.o
 COBJS	= cache.o cpu_init_early.o spl_minimal.o fsl_law.o law.o \
 	  nand_boot.o nand_boot_fsl_elbc.o ns16550.o tlb.o tlb_table.o
 
-SRCS	:= $(addprefix $(obj)/,$(SOBJS:.o=.S) $(COBJS:.o=.c))
 OBJS	:= $(addprefix $(obj)/,$(SOBJS) $(COBJS))
 __OBJS	:= $(SOBJS) $(COBJS)
 LNDIR	:= $(nandobj)board/$(BOARDDIR)
 
+targets += $(__OBJS)
+
 all: $(nandobj)u-boot-spl.bin $(nandobj)u-boot-spl-16k.bin
 
 $(nandobj)u-boot-spl-16k.bin: $(nandobj)u-boot-spl
@@ -40,7 +41,7 @@ $(nandobj)u-boot-spl:	$(OBJS) $(nandobj)u-boot-nand_spl.lds
 		-Map $(nandobj)u-boot-spl.map -o $@
 
 $(nandobj)u-boot-nand_spl.lds: $(LDSCRIPT)
-	$(CPP) $(CPPFLAGS) $(LDPPFLAGS) -I$(nandobj)/board/$(BOARDDIR) \
+	$(CPP) $(cpp_flags) $(LDPPFLAGS) -I$(nandobj)/board/$(BOARDDIR) \
 		-ansi -D__ASSEMBLY__ -P - <$< >$@
 
 # create symbolic links for common files
diff --git a/nand_spl/board/freescale/mpc8569mds/Makefile b/nand_spl/board/freescale/mpc8569mds/Makefile
index f711cf30ba..f0beaedf1a 100644
--- a/nand_spl/board/freescale/mpc8569mds/Makefile
+++ b/nand_spl/board/freescale/mpc8569mds/Makefile
@@ -15,18 +15,19 @@ nandobj	:= $(OBJTREE)/nand_spl/
 LDSCRIPT= $(TOPDIR)/$(CPUDIR)/u-boot-nand_spl.lds
 LDFLAGS := -T $(nandobj)u-boot-nand_spl.lds -Ttext $(CONFIG_SYS_TEXT_BASE_SPL) \
 		$(LDFLAGS) $(LDFLAGS_FINAL)
-AFLAGS	+= -DCONFIG_NAND_SPL
-CFLAGS	+= -DCONFIG_NAND_SPL
+asflags-y += -DCONFIG_NAND_SPL
+ccflags-y += -DCONFIG_NAND_SPL
 
 SOBJS	= start.o resetvec.o
 COBJS	= cache.o cpu_init_early.o spl_minimal.o fsl_law.o law.o \
 	  nand_boot.o nand_boot_fsl_elbc.o ns16550.o tlb.o tlb_table.o
 
-SRCS	:= $(addprefix $(obj)/,$(SOBJS:.o=.S) $(COBJS:.o=.c))
 OBJS	:= $(addprefix $(obj)/,$(SOBJS) $(COBJS))
 __OBJS	:= $(SOBJS) $(COBJS)
 LNDIR	:= $(nandobj)board/$(BOARDDIR)
 
+targets += $(__OBJS)
+
 all: $(nandobj)u-boot-spl.bin $(nandobj)u-boot-spl-16k.bin
 
 $(nandobj)u-boot-spl-16k.bin: $(nandobj)u-boot-spl
@@ -40,7 +41,7 @@ $(nandobj)u-boot-spl:	$(OBJS) $(nandobj)u-boot-nand_spl.lds
 		-Map $(nandobj)u-boot-spl.map -o $@
 
 $(nandobj)u-boot-nand_spl.lds: $(LDSCRIPT)
-	$(CPP) $(CPPFLAGS) $(LDPPFLAGS) -I$(nandobj)/board/$(BOARDDIR) \
+	$(CPP) $(cpp_flags) $(LDPPFLAGS) -I$(nandobj)/board/$(BOARDDIR) \
 		-ansi -D__ASSEMBLY__ -P - <$< >$@
 
 # create symbolic links for common files
diff --git a/nand_spl/board/freescale/mpc8572ds/Makefile b/nand_spl/board/freescale/mpc8572ds/Makefile
index f711cf30ba..f0beaedf1a 100644
--- a/nand_spl/board/freescale/mpc8572ds/Makefile
+++ b/nand_spl/board/freescale/mpc8572ds/Makefile
@@ -15,18 +15,19 @@ nandobj	:= $(OBJTREE)/nand_spl/
 LDSCRIPT= $(TOPDIR)/$(CPUDIR)/u-boot-nand_spl.lds
 LDFLAGS := -T $(nandobj)u-boot-nand_spl.lds -Ttext $(CONFIG_SYS_TEXT_BASE_SPL) \
 		$(LDFLAGS) $(LDFLAGS_FINAL)
-AFLAGS	+= -DCONFIG_NAND_SPL
-CFLAGS	+= -DCONFIG_NAND_SPL
+asflags-y += -DCONFIG_NAND_SPL
+ccflags-y += -DCONFIG_NAND_SPL
 
 SOBJS	= start.o resetvec.o
 COBJS	= cache.o cpu_init_early.o spl_minimal.o fsl_law.o law.o \
 	  nand_boot.o nand_boot_fsl_elbc.o ns16550.o tlb.o tlb_table.o
 
-SRCS	:= $(addprefix $(obj)/,$(SOBJS:.o=.S) $(COBJS:.o=.c))
 OBJS	:= $(addprefix $(obj)/,$(SOBJS) $(COBJS))
 __OBJS	:= $(SOBJS) $(COBJS)
 LNDIR	:= $(nandobj)board/$(BOARDDIR)
 
+targets += $(__OBJS)
+
 all: $(nandobj)u-boot-spl.bin $(nandobj)u-boot-spl-16k.bin
 
 $(nandobj)u-boot-spl-16k.bin: $(nandobj)u-boot-spl
@@ -40,7 +41,7 @@ $(nandobj)u-boot-spl:	$(OBJS) $(nandobj)u-boot-nand_spl.lds
 		-Map $(nandobj)u-boot-spl.map -o $@
 
 $(nandobj)u-boot-nand_spl.lds: $(LDSCRIPT)
-	$(CPP) $(CPPFLAGS) $(LDPPFLAGS) -I$(nandobj)/board/$(BOARDDIR) \
+	$(CPP) $(cpp_flags) $(LDPPFLAGS) -I$(nandobj)/board/$(BOARDDIR) \
 		-ansi -D__ASSEMBLY__ -P - <$< >$@
 
 # create symbolic links for common files
diff --git a/nand_spl/board/freescale/p1023rds/Makefile b/nand_spl/board/freescale/p1023rds/Makefile
index 21a6920e63..3918ac585b 100644
--- a/nand_spl/board/freescale/p1023rds/Makefile
+++ b/nand_spl/board/freescale/p1023rds/Makefile
@@ -11,18 +11,19 @@ nandobj	:= $(OBJTREE)/nand_spl/
 LDSCRIPT= $(TOPDIR)/$(CPUDIR)/u-boot-nand_spl.lds
 LDFLAGS := -T $(nandobj)u-boot-nand_spl.lds -Ttext $(CONFIG_SYS_TEXT_BASE_SPL) \
 		$(LDFLAGS) $(LDFLAGS_FINAL)
-AFLAGS	+= -DCONFIG_NAND_SPL
-CFLAGS	+= -DCONFIG_NAND_SPL
+asflags-y += -DCONFIG_NAND_SPL
+ccflags-y += -DCONFIG_NAND_SPL
 
 SOBJS	= start.o resetvec.o
 COBJS	= cache.o cpu_init_early.o spl_minimal.o fsl_law.o law.o \
 	  nand_boot.o nand_boot_fsl_elbc.o ns16550.o tlb.o tlb_table.o
 
-SRCS	:= $(addprefix $(obj)/,$(SOBJS:.o=.S) $(COBJS:.o=.c))
 OBJS	:= $(addprefix $(obj)/,$(SOBJS) $(COBJS))
 __OBJS	:= $(SOBJS) $(COBJS)
 LNDIR	:= $(nandobj)board/$(BOARDDIR)
 
+targets += $(__OBJS)
+
 all: $(nandobj)u-boot-spl.bin $(nandobj)u-boot-spl-16k.bin
 
 $(nandobj)u-boot-spl-16k.bin: $(nandobj)u-boot-spl
@@ -36,7 +37,7 @@ $(nandobj)u-boot-spl:	$(OBJS) $(nandobj)u-boot-nand_spl.lds
 		-Map $(nandobj)u-boot-spl.map -o $@
 
 $(nandobj)u-boot-nand_spl.lds: $(LDSCRIPT)
-	$(CPP) $(CPPFLAGS) $(LDPPFLAGS) -I$(nandobj)/board/$(BOARDDIR) \
+	$(CPP) $(cpp_flags) $(LDPPFLAGS) -I$(nandobj)/board/$(BOARDDIR) \
 		-ansi -D__ASSEMBLY__ -P - <$< >$@
 
 # create symbolic links for common files
diff --git a/nand_spl/board/freescale/p1_p2_rdb/Makefile b/nand_spl/board/freescale/p1_p2_rdb/Makefile
index f711cf30ba..f0beaedf1a 100644
--- a/nand_spl/board/freescale/p1_p2_rdb/Makefile
+++ b/nand_spl/board/freescale/p1_p2_rdb/Makefile
@@ -15,18 +15,19 @@ nandobj	:= $(OBJTREE)/nand_spl/
 LDSCRIPT= $(TOPDIR)/$(CPUDIR)/u-boot-nand_spl.lds
 LDFLAGS := -T $(nandobj)u-boot-nand_spl.lds -Ttext $(CONFIG_SYS_TEXT_BASE_SPL) \
 		$(LDFLAGS) $(LDFLAGS_FINAL)
-AFLAGS	+= -DCONFIG_NAND_SPL
-CFLAGS	+= -DCONFIG_NAND_SPL
+asflags-y += -DCONFIG_NAND_SPL
+ccflags-y += -DCONFIG_NAND_SPL
 
 SOBJS	= start.o resetvec.o
 COBJS	= cache.o cpu_init_early.o spl_minimal.o fsl_law.o law.o \
 	  nand_boot.o nand_boot_fsl_elbc.o ns16550.o tlb.o tlb_table.o
 
-SRCS	:= $(addprefix $(obj)/,$(SOBJS:.o=.S) $(COBJS:.o=.c))
 OBJS	:= $(addprefix $(obj)/,$(SOBJS) $(COBJS))
 __OBJS	:= $(SOBJS) $(COBJS)
 LNDIR	:= $(nandobj)board/$(BOARDDIR)
 
+targets += $(__OBJS)
+
 all: $(nandobj)u-boot-spl.bin $(nandobj)u-boot-spl-16k.bin
 
 $(nandobj)u-boot-spl-16k.bin: $(nandobj)u-boot-spl
@@ -40,7 +41,7 @@ $(nandobj)u-boot-spl:	$(OBJS) $(nandobj)u-boot-nand_spl.lds
 		-Map $(nandobj)u-boot-spl.map -o $@
 
 $(nandobj)u-boot-nand_spl.lds: $(LDSCRIPT)
-	$(CPP) $(CPPFLAGS) $(LDPPFLAGS) -I$(nandobj)/board/$(BOARDDIR) \
+	$(CPP) $(cpp_flags) $(LDPPFLAGS) -I$(nandobj)/board/$(BOARDDIR) \
 		-ansi -D__ASSEMBLY__ -P - <$< >$@
 
 # create symbolic links for common files
diff --git a/nand_spl/board/sheldon/simpc8313/Makefile b/nand_spl/board/sheldon/simpc8313/Makefile
index ca45ecd328..35b1f974db 100644
--- a/nand_spl/board/sheldon/simpc8313/Makefile
+++ b/nand_spl/board/sheldon/simpc8313/Makefile
@@ -12,18 +12,19 @@ nandobj	:= $(OBJTREE)/nand_spl/
 LDSCRIPT= $(TOPDIR)/nand_spl/board/$(BOARDDIR)/u-boot.lds
 LDFLAGS := -T $(nandobj)u-boot.lds -Ttext $(CONFIG_SYS_TEXT_BASE_SPL) \
 	   $(LDFLAGS) $(LDFLAGS_FINAL)
-AFLAGS	+= -DCONFIG_NAND_SPL
-CFLAGS	+= -DCONFIG_NAND_SPL
+asflags-y += -DCONFIG_NAND_SPL
+ccflags-y += -DCONFIG_NAND_SPL
 
 SOBJS	= start.o ticks.o
 COBJS	= nand_boot_fsl_elbc.o $(BOARD).o sdram.o ns16550.o spl_minimal.o \
 	  time.o cache.o
 
-SRCS	:= $(addprefix $(obj)/,$(SOBJS:.o=.S) $(COBJS:.o=.c))
 OBJS	:= $(addprefix $(obj)/,$(SOBJS) $(COBJS))
 __OBJS	:= $(SOBJS) $(COBJS)
 LNDIR	:= $(nandobj)board/$(BOARDDIR)
 
+targets += $(__OBJS)
+
 all: $(nandobj)u-boot-spl.bin $(nandobj)u-boot-spl-16k.bin
 
 $(nandobj)u-boot-spl-16k.bin:	$(nandobj)u-boot-spl
@@ -37,7 +38,7 @@ $(nandobj)u-boot-spl:	$(OBJS) $(nandobj)u-boot.lds
 		-Map $(nandobj)u-boot-spl.map -o $@
 
 $(nandobj)u-boot.lds: $(LDSCRIPT)
-	$(CPP) $(CPPFLAGS) $(LDPPFLAGS) -ansi -D__ASSEMBLY__ -P - <$^ >$@
+	$(CPP) $(cpp_flags) $(LDPPFLAGS) -ansi -D__ASSEMBLY__ -P - <$^ >$@
 
 # create symbolic links for common files