From 9e4140329ee9a787d0f96ac2829d618d47f7973f Mon Sep 17 00:00:00 2001 From: Masahiro Yamada Date: Tue, 4 Feb 2014 17:24:24 +0900 Subject: kbuild: change out-of-tree build This commit changes the working directory where the build process occurs. Before this commit, build process occurred under the source tree for both in-tree and out-of-tree build. That's why we needed to add $(obj) prefix to all generated files in makefiles like follows: $(obj)u-boot.bin: $(obj)u-boot Here, $(obj) is empty for in-tree build, whereas it points to the output directory for out-of-tree build. And our old build system changes the current working directory with "make -C " syntax when descending into the sub-directories. On the other hand, Kbuild uses a different idea to handle out-of-tree build and directory descending. The build process of Kbuild always occurs under the output tree. When "O=dir/to/store/output/files" is given, the build system changes the current working directory to that directory and restarts the make. Kbuild uses "make -f $(srctree)/scripts/Makefile.build obj=" syntax for descending into sub-directories. (We can write it like "make $(obj)=" with a shorthand.) This means the current working directory is always the top of the output directory. Signed-off-by: Masahiro Yamada Tested-by: Gerhard Sittig --- arch/arm/cpu/arm1136/config.mk | 2 +- arch/arm/cpu/arm926ejs/config.mk | 2 +- arch/arm/cpu/arm926ejs/davinci/config.mk | 2 +- arch/arm/cpu/armv7/am33xx/config.mk | 2 +- arch/arm/cpu/armv7/config.mk | 2 +- arch/arm/cpu/armv7/omap3/config.mk | 2 +- arch/arm/cpu/armv7/omap4/config.mk | 2 +- arch/arm/cpu/armv7/omap5/config.mk | 2 +- arch/arm/cpu/armv7/socfpga/config.mk | 2 +- arch/blackfin/config.mk | 10 +++++----- arch/blackfin/cpu/Makefile | 8 ++++---- arch/mips/cpu/mips32/config.mk | 2 +- arch/mips/cpu/mips64/config.mk | 2 +- arch/mips/cpu/xburst/config.mk | 2 +- arch/nds32/config.mk | 2 +- arch/powerpc/lib/Makefile | 4 ++-- arch/sandbox/cpu/Makefile | 4 ++-- arch/sparc/config.mk | 3 ++- arch/x86/lib/Makefile | 2 +- 19 files changed, 29 insertions(+), 28 deletions(-) (limited to 'arch') diff --git a/arch/arm/cpu/arm1136/config.mk b/arch/arm/cpu/arm1136/config.mk index f74228cdba..ab1fc4ad15 100644 --- a/arch/arm/cpu/arm1136/config.mk +++ b/arch/arm/cpu/arm1136/config.mk @@ -14,6 +14,6 @@ ifdef CONFIG_SPL_BUILD ALL-y += $(OBJTREE)/SPL endif else -ALL-y += $(obj)u-boot.imx +ALL-y += u-boot.imx endif endif diff --git a/arch/arm/cpu/arm926ejs/config.mk b/arch/arm/cpu/arm926ejs/config.mk index 4d9895f5d8..f27ca15086 100644 --- a/arch/arm/cpu/arm926ejs/config.mk +++ b/arch/arm/cpu/arm926ejs/config.mk @@ -13,6 +13,6 @@ ifdef CONFIG_SPL_BUILD ALL-y += $(OBJTREE)/SPL endif else -ALL-y += $(obj)u-boot.imx +ALL-y += u-boot.imx endif endif diff --git a/arch/arm/cpu/arm926ejs/davinci/config.mk b/arch/arm/cpu/arm926ejs/davinci/config.mk index d5c978b446..69e9d5ab21 100644 --- a/arch/arm/cpu/arm926ejs/davinci/config.mk +++ b/arch/arm/cpu/arm926ejs/davinci/config.mk @@ -4,5 +4,5 @@ # SPDX-License-Identifier: GPL-2.0+ # ifndef CONFIG_SPL_BUILD -ALL-$(CONFIG_SPL_FRAMEWORK) += $(obj)u-boot.ais +ALL-$(CONFIG_SPL_FRAMEWORK) += u-boot.ais endif diff --git a/arch/arm/cpu/armv7/am33xx/config.mk b/arch/arm/cpu/armv7/am33xx/config.mk index 8e3668f781..1c06fb40a4 100644 --- a/arch/arm/cpu/armv7/am33xx/config.mk +++ b/arch/arm/cpu/armv7/am33xx/config.mk @@ -7,5 +7,5 @@ ifdef CONFIG_SPL_BUILD ALL-y += $(OBJTREE)/MLO ALL-$(CONFIG_SPL_SPI_SUPPORT) += $(OBJTREE)/MLO.byteswap else -ALL-y += $(obj)u-boot.img +ALL-y += u-boot.img endif diff --git a/arch/arm/cpu/armv7/config.mk b/arch/arm/cpu/armv7/config.mk index 38b7c401f8..d01f3d9f50 100644 --- a/arch/arm/cpu/armv7/config.mk +++ b/arch/arm/cpu/armv7/config.mk @@ -20,6 +20,6 @@ ifdef CONFIG_SPL_BUILD ALL-y += $(OBJTREE)/SPL endif else -ALL-y += $(obj)u-boot.imx +ALL-y += u-boot.imx endif endif diff --git a/arch/arm/cpu/armv7/omap3/config.mk b/arch/arm/cpu/armv7/omap3/config.mk index 1d6a57c66c..2a3d1c5c3a 100644 --- a/arch/arm/cpu/armv7/omap3/config.mk +++ b/arch/arm/cpu/armv7/omap3/config.mk @@ -11,5 +11,5 @@ ifdef CONFIG_SPL_BUILD ALL-y += $(OBJTREE)/MLO else -ALL-y += $(obj)u-boot.img +ALL-y += u-boot.img endif diff --git a/arch/arm/cpu/armv7/omap4/config.mk b/arch/arm/cpu/armv7/omap4/config.mk index 1d6a57c66c..2a3d1c5c3a 100644 --- a/arch/arm/cpu/armv7/omap4/config.mk +++ b/arch/arm/cpu/armv7/omap4/config.mk @@ -11,5 +11,5 @@ ifdef CONFIG_SPL_BUILD ALL-y += $(OBJTREE)/MLO else -ALL-y += $(obj)u-boot.img +ALL-y += u-boot.img endif diff --git a/arch/arm/cpu/armv7/omap5/config.mk b/arch/arm/cpu/armv7/omap5/config.mk index 2673af9668..261b272234 100644 --- a/arch/arm/cpu/armv7/omap5/config.mk +++ b/arch/arm/cpu/armv7/omap5/config.mk @@ -9,5 +9,5 @@ ifdef CONFIG_SPL_BUILD ALL-y += $(OBJTREE)/MLO else -ALL-y += $(obj)u-boot.img +ALL-y += u-boot.img endif diff --git a/arch/arm/cpu/armv7/socfpga/config.mk b/arch/arm/cpu/armv7/socfpga/config.mk index d33ab7d62f..3d18491577 100644 --- a/arch/arm/cpu/armv7/socfpga/config.mk +++ b/arch/arm/cpu/armv7/socfpga/config.mk @@ -4,5 +4,5 @@ # SPDX-License-Identifier: GPL-2.0+ # ifndef CONFIG_SPL_BUILD -ALL-y += $(obj)u-boot.img +ALL-y += u-boot.img endif diff --git a/arch/blackfin/config.mk b/arch/blackfin/config.mk index 73fa79855f..c752025aaf 100644 --- a/arch/blackfin/config.mk +++ b/arch/blackfin/config.mk @@ -12,7 +12,7 @@ CONFIG_STANDALONE_LOAD_ADDR ?= 0x1000 -m elf32bfin ifeq ($(CONFIG_BFIN_CPU),) CONFIG_BFIN_CPU := \ $(shell awk '$$2 == "CONFIG_BFIN_CPU" { print $$3 }' \ - $(src)include/configs/$(BOARD).h) + $(srctree)/include/configs/$(BOARD).h) else CONFIG_BFIN_CPU := $(strip $(CONFIG_BFIN_CPU:"%"=%)) endif @@ -28,10 +28,10 @@ PLATFORM_RELFLAGS += -ffunction-sections -fdata-sections PLATFORM_RELFLAGS += -mcpu=$(CONFIG_BFIN_CPU) ifneq ($(CONFIG_BFIN_BOOT_MODE),BFIN_BOOT_BYPASS) -ALL-y += $(obj)u-boot.ldr +ALL-y += u-boot.ldr endif ifeq ($(CONFIG_ENV_IS_EMBEDDED_IN_LDR),y) -CREATE_LDR_ENV = $(obj)tools/envcrc --binary > $(obj)env-ldr.o +CREATE_LDR_ENV = tools/envcrc --binary > env-ldr.o HOSTCFLAGS_NOPED_ADSP := \ $(shell $(CPP) -dD - -mcpu=$(CONFIG_BFIN_CPU) .*\' ; then \ echo "$< contains external references!" 1>&2 ; \ @@ -35,7 +35,7 @@ ifneq ($(CONFIG_BFIN_BOOT_MODE),BFIN_BOOT_BYPASS) fi endif -$(obj)init.lds: init.lds.S +$(obj)/init.lds: $(src)/init.lds.S $(CPP) $(CPPFLAGS) $(LDPPFLAGS) -ansi -D__ASSEMBLY__ -P $^ -o $@ -$(obj)init.elf: $(obj)init.lds $(obj)init.o $(obj)initcode.o +$(obj)/init.elf: $(obj)/init.lds $(obj)/init.o $(obj)/initcode.o $(LD) $(LDFLAGS) -T $^ -o $@ diff --git a/arch/mips/cpu/mips32/config.mk b/arch/mips/cpu/mips32/config.mk index 067f871525..7ee7faae8f 100644 --- a/arch/mips/cpu/mips32/config.mk +++ b/arch/mips/cpu/mips32/config.mk @@ -21,4 +21,4 @@ else PLATFORM_LDFLAGS += -m elf32ltsmip endif -CONFIG_STANDALONE_LOAD_ADDR ?= 0x80200000 -T mips.lds +CONFIG_STANDALONE_LOAD_ADDR ?= 0x80200000 -T $(srctree)/$(src)/mips.lds diff --git a/arch/mips/cpu/mips64/config.mk b/arch/mips/cpu/mips64/config.mk index d1a8b2c7aa..02113a1f09 100644 --- a/arch/mips/cpu/mips64/config.mk +++ b/arch/mips/cpu/mips64/config.mk @@ -21,4 +21,4 @@ else PLATFORM_LDFLAGS += -m elf64ltsmip endif -CONFIG_STANDALONE_LOAD_ADDR ?= 0xffffffff80200000 -T mips64.lds +CONFIG_STANDALONE_LOAD_ADDR ?= 0xffffffff80200000 -T $(srctree)/$(src)/mips64.lds diff --git a/arch/mips/cpu/xburst/config.mk b/arch/mips/cpu/xburst/config.mk index d81da21017..00b0fd9c9c 100644 --- a/arch/mips/cpu/xburst/config.mk +++ b/arch/mips/cpu/xburst/config.mk @@ -12,4 +12,4 @@ else PLATFORM_LDFLAGS += -m elf32ltsmip endif -CONFIG_STANDALONE_LOAD_ADDR ?= 0x80200000 -T mips.lds +CONFIG_STANDALONE_LOAD_ADDR ?= 0x80200000 -T $(srctree)/$(src)/mips.lds diff --git a/arch/nds32/config.mk b/arch/nds32/config.mk index e93e3a8c28..550f8a440e 100644 --- a/arch/nds32/config.mk +++ b/arch/nds32/config.mk @@ -10,7 +10,7 @@ CROSS_COMPILE ?= nds32le-linux- -CONFIG_STANDALONE_LOAD_ADDR = 0x300000 -T nds32.lds +CONFIG_STANDALONE_LOAD_ADDR = 0x300000 -T $(srctree)/$(src)/nds32.lds PLATFORM_RELFLAGS += -fno-strict-aliasing -fno-common -mrelax PLATFORM_RELFLAGS += -gdwarf-2 diff --git a/arch/powerpc/lib/Makefile b/arch/powerpc/lib/Makefile index a706d3cc70..ac780d4077 100644 --- a/arch/powerpc/lib/Makefile +++ b/arch/powerpc/lib/Makefile @@ -54,11 +54,11 @@ ifndef CONFIG_SPL_BUILD # Workaround for local bus unaligned access problems # on MPC512x and MPC5200 ifdef CONFIG_MPC512X -$(obj)ppcstring.o: AFLAGS += -Dmemcpy=__memcpy +$(obj)/ppcstring.o: AFLAGS += -Dmemcpy=__memcpy obj-y += memcpy_mpc5200.o endif ifdef CONFIG_MPC5200 -$(obj)ppcstring.o: AFLAGS += -Dmemcpy=__memcpy +$(obj)/ppcstring.o: AFLAGS += -Dmemcpy=__memcpy obj-y += memcpy_mpc5200.o endif endif diff --git a/arch/sandbox/cpu/Makefile b/arch/sandbox/cpu/Makefile index b564294a84..c5f5426b05 100644 --- a/arch/sandbox/cpu/Makefile +++ b/arch/sandbox/cpu/Makefile @@ -10,7 +10,7 @@ obj-y := cpu.o os.o start.o state.o # os.c is build in the system environment, so needs standard includes -$(obj)os.o: CFLAGS := $(filter-out -nostdinc,\ +$(obj)/os.o: CFLAGS := $(filter-out -nostdinc,\ $(patsubst -I%,-idirafter%,$(CFLAGS))) -$(obj).depend.os: CPPFLAGS := $(filter-out -nostdinc,\ +$(obj)/.depend.os: CPPFLAGS := $(filter-out -nostdinc,\ $(patsubst -I%,-idirafter%,$(CPPFLAGS))) diff --git a/arch/sparc/config.mk b/arch/sparc/config.mk index e94e7cbab5..9bb37241d2 100644 --- a/arch/sparc/config.mk +++ b/arch/sparc/config.mk @@ -7,6 +7,7 @@ CROSS_COMPILE ?= sparc-elf- -CONFIG_STANDALONE_LOAD_ADDR ?= 0x00000000 -L $(gcclibdir) -T sparc.lds +CONFIG_STANDALONE_LOAD_ADDR ?= 0x00000000 -L $(gcclibdir) \ + -T $(srctree)/$(src)/sparc.lds PLATFORM_CPPFLAGS += -DCONFIG_SPARC -D__sparc__ diff --git a/arch/x86/lib/Makefile b/arch/x86/lib/Makefile index 638f79069c..a35d062792 100644 --- a/arch/x86/lib/Makefile +++ b/arch/x86/lib/Makefile @@ -23,5 +23,5 @@ obj-$(CONFIG_CMD_ZBOOT) += zimage.o LIBGCC := $(notdir $(NORMAL_LIBGCC)) extra-y := $(LIBGCC) -$(obj)$(LIBGCC): $(NORMAL_LIBGCC) +$(obj)/$(LIBGCC): $(NORMAL_LIBGCC) $(OBJCOPY) $< $@ --prefix-symbols=__normal_ -- cgit v1.2.3