For out-of-tree build - Check if the source tree is clean - Create a Makefile in the output directory
Signed-off-by: Masahiro Yamada yamada.m@jp.panasonic.com ---
Changes in v4: None Changes in v3: None Changes in v2: - Newly added
Makefile | 63 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++------ 1 file changed, 57 insertions(+), 6 deletions(-)
diff --git a/Makefile b/Makefile index 06c7c5f..4f65d9a 100644 --- a/Makefile +++ b/Makefile @@ -391,6 +391,17 @@ scripts_basic: # To avoid any implicit rule to kick in, define an empty command. scripts/basic/%: scripts_basic ;
+PHONY += outputmakefile +# outputmakefile generates a Makefile in the output directory, if using a +# separate output directory. This allows convenient use of make in the +# output directory. +outputmakefile: +ifneq ($(KBUILD_SRC),) + $(Q)ln -fsn $(srctree) source + $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \ + $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL) +endif + # To make sure we do not include .config for any of the *config targets # catch them early, and hand them over to scripts/kconfig/Makefile # It is allowed to specify more targets when calling make, including @@ -448,7 +459,7 @@ ifeq ($(config-targets),1) # KBUILD_DEFCONFIG may point out an alternative default configuration # used for 'make defconfig'
-%_config:: +%_config:: outputmakefile @$(MKCONFIG) -A $(@:_config=)
else @@ -924,7 +935,7 @@ $(sort $(u-boot-init) $(u-boot-main)): $(u-boot-dirs) ; # Error messages still appears in the original language
PHONY += $(u-boot-dirs) -$(u-boot-dirs): depend scripts_basic +$(u-boot-dirs): depend prepare $(Q)$(MAKE) $(build)=$@
tools: $(TIMESTAMP_FILE) $(VERSION_FILE) @@ -935,19 +946,56 @@ $(filter-out tools, $(u-boot-dirs)): tools examples: $(filter-out examples, $(u-boot-dirs))
+# Things we need to do before we recursively start building the kernel +# or the modules are listed in "prepare". +# A multi level approach is used. prepareN is processed before prepareN-1. +# archprepare is used in arch Makefiles and when processed asm symlink, +# version.h and scripts_basic is processed / created. + +# Listed in dependency order +PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3 + +# prepare3 is used to check if we are building in a separate output directory, +# and if so do: +# 1) Check that make has not been executed in the kernel src $(srctree) +prepare3: +ifneq ($(KBUILD_SRC),) + @$(kecho) ' Using $(srctree) as source for u-boot' + $(Q)if [ -f $(srctree)/include/config.mk ]; then \ + echo >&2 " $(srctree) is not clean, please run 'make mrproper'"; \ + echo >&2 " in the '$(srctree)' directory.";\ + /bin/false; \ + fi; +endif + +# prepare2 creates a makefile if using a separate output directory +prepare2: prepare3 outputmakefile + +prepare1: prepare2 + @: + +archprepare: prepare1 scripts_basic + +prepare0: archprepare FORCE + @: + +# All the preparing.. +prepare: prepare0 + + u-boot.lds: $(LDSCRIPT) depend $(CPP) $(cpp_flags) $(LDPPFLAGS) -ansi -D__ASSEMBLY__ -P - <$< >$@
-nand_spl: $(TIMESTAMP_FILE) $(VERSION_FILE) depend scripts_basic +nand_spl: $(TIMESTAMP_FILE) $(VERSION_FILE) depend prepare $(MAKE) $(build)=nand_spl/board/$(BOARDDIR) all
u-boot-nand.bin: nand_spl u-boot.bin cat nand_spl/u-boot-spl-16k.bin u-boot.bin > u-boot-nand.bin
-spl/u-boot-spl.bin: tools depend scripts_basic +spl/u-boot-spl.bin: tools depend prepare $(MAKE) obj=spl -f $(srctree)/spl/Makefile all
-tpl/u-boot-tpl.bin: tools depend scripts_basic +tpl/u-boot-tpl.bin: tools depend prepare $(MAKE) obj=tpl -f $(srctree)/spl/Makefile all CONFIG_TPL_BUILD=y
# Explicitly make _depend in subdirs containing multiple targets to prevent @@ -1190,7 +1238,10 @@ backup: F=`basename $(TOPDIR)` ; cd .. ; \ gtar --force-local -zcvf `LC_ALL=C date "+$$F-%Y-%m-%d-%T.tar.gz"` $$F
-######################################################################### +# Dummies... +PHONY += prepare scripts +prepare: ; +scripts: ;
endif #ifeq ($(config-targets),1) endif #ifeq ($(mixed-targets),1)