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authorSam Ravnborg <sam@mars.ravnborg.org>2005-09-11 22:30:22 +0200
committerSam Ravnborg <sam@mars.ravnborg.org>2005-09-11 22:30:22 +0200
commit5bb78269000cf326bfdfa19f79449c02a9158020 (patch)
treef01e30e8d8f015cb0418331da55a459ddcfc9569 /Documentation/kbuild
parent9fe66dfd8846706ff11ed7990d06c92644973bd8 (diff)
downloadop-kernel-dev-5bb78269000cf326bfdfa19f79449c02a9158020.zip
op-kernel-dev-5bb78269000cf326bfdfa19f79449c02a9158020.tar.gz
kbuild: rename prepare to archprepare to fix dependency chain
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>
Diffstat (limited to 'Documentation/kbuild')
-rw-r--r--Documentation/kbuild/makefiles.txt14
1 files changed, 7 insertions, 7 deletions
diff --git a/Documentation/kbuild/makefiles.txt b/Documentation/kbuild/makefiles.txt
index 9a15865..d802ce8 100644
--- a/Documentation/kbuild/makefiles.txt
+++ b/Documentation/kbuild/makefiles.txt
@@ -31,7 +31,7 @@ This document describes the Linux kernel Makefiles.
=== 6 Architecture Makefiles
--- 6.1 Set variables to tweak the build to the architecture
- --- 6.2 Add prerequisites to prepare:
+ --- 6.2 Add prerequisites to archprepare:
--- 6.3 List directories to visit when descending
--- 6.4 Architecture specific boot images
--- 6.5 Building non-kbuild targets
@@ -734,18 +734,18 @@ When kbuild executes the following steps are followed (roughly):
for loadable kernel modules.
---- 6.2 Add prerequisites to prepare:
+--- 6.2 Add prerequisites to archprepare:
- The prepare: rule is used to list prerequisites that needs to be
+ The archprepare: rule is used to list prerequisites that needs to be
built before starting to descend down in the subdirectories.
This is usual header files containing assembler constants.
Example:
- #arch/s390/Makefile
- prepare: include/asm-$(ARCH)/offsets.h
+ #arch/arm/Makefile
+ archprepare: maketools
- In this example the file include/asm-$(ARCH)/offsets.h will
- be built before descending down in the subdirectories.
+ In this example the file target maketools will be processed
+ before descending down in the subdirectories.
See also chapter XXX-TODO that describe how kbuild supports
generating offset header files.
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