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| author | Sam Ravnborg <sam@mars.ravnborg.org> | 2005-09-11 22:30:22 +0200 |
|---|---|---|
| committer | Sam Ravnborg <sam@mars.ravnborg.org> | 2005-09-11 22:30:22 +0200 |
| commit | 5bb78269000cf326bfdfa19f79449c02a9158020 (patch) | |
| tree | f01e30e8d8f015cb0418331da55a459ddcfc9569 /Documentation/kbuild | |
| parent | 9fe66dfd8846706ff11ed7990d06c92644973bd8 (diff) | |
| download | lwn-5bb78269000cf326bfdfa19f79449c02a9158020.tar.gz lwn-5bb78269000cf326bfdfa19f79449c02a9158020.zip | |
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.txt | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/Documentation/kbuild/makefiles.txt b/Documentation/kbuild/makefiles.txt index 9a1586590d82..d802ce88bedc 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. |