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kbuild: rename prepare to archprepare to fix dependency chain

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When introducing the generic asm-offsets.h support the dependency
chain for the prepare targets was changed. All build scripts expecting
include/asm/asm-offsets.h to be made when using the prepare target would broke.
With the limited number of prepare targets left in arch Makefiles
the trivial solution was to introduce a new arch specific target: archprepare

The dependency chain looks like this now:

prepare
  |
  +--> prepare0
         |
         +--> archprepare
                |
		+--> scripts_basic
                +--> prepare1
                       |
                       +---> prepare2
                               |
                               +--> prepare3

So prepare 3 is processed before prepare2 etc.
This guaantees that the asm symlink, version.h, scripts_basic
are all updated before archprepare is processed.

prepare0 which build the asm-offsets.h file will need the
actions performed by archprepare.

The head target is now named prepare, because users scripts will most
likely use that target, but prepare-all has been kept for compatibility.
Updated Documentation/kbuild/makefiles.txt.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
This commit is contained in:
Sam Ravnborg
2005-09-11 22:30:22 +02:00
parent 9fe66dfd88
commit 5bb7826900
10 changed files with 30 additions and 23 deletions
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Makefile
+15 -8
View File
@@ -776,15 +776,20 @@ $(sort $(vmlinux-init) $(vmlinux-main)) $(vmlinux-lds): $(vmlinux-dirs) ;
# Error messages still appears in the original language
.PHONY: $(vmlinux-dirs)
$(vmlinux-dirs): prepare-all scripts
$(vmlinux-dirs): prepare scripts
$(Q)$(MAKE) $(build)=$@
# Things we need to do before we recursively start building the kernel
# or the modules are listed in "prepare-all".
# A multi level approach is used. prepare1 is updated first, then prepare0.
# prepare-all is the collection point for the prepare targets.
# 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.
.PHONY: prepare-all prepare prepare0 prepare1 prepare2 prepare3
# Listed in dependency order
.PHONY: prepare archprepare prepare0 prepare1 prepare2 prepare3
# prepare-all is deprecated, use prepare as valid replacement
.PHONY: prepare-all
# prepare3 is used to check if we are building in a separate output directory,
# and if so do:
@@ -813,11 +818,13 @@ ifneq ($(KBUILD_MODULES),)
$(Q)mkdir -p $(MODVERDIR)
endif
prepare0: prepare prepare1 FORCE
archprepare: prepare1 scripts_basic
prepare0: archprepare FORCE
$(Q)$(MAKE) $(build)=.
# All the preparing..
prepare-all: prepare0
prepare prepare-all: prepare0
# Leave this as default for preprocessing vmlinux.lds.S, which is now
# done in arch/$(ARCH)/kernel/Makefile
@@ -908,7 +915,7 @@ modules: $(vmlinux-dirs) $(if $(KBUILD_BUILTIN),vmlinux)
# Target to prepare building external modules
.PHONY: modules_prepare
modules_prepare: prepare-all scripts
modules_prepare: prepare scripts
# Target to install modules
.PHONY: modules_install