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authorNicholas Piggin <npiggin@gmail.com>2018-02-10 17:25:04 +0300
committerMasahiro Yamada <yamada.masahiro@socionext.com>2018-03-25 20:01:19 +0300
commitf49821ee32b76b1a356fab17316eb62430182ecf (patch)
tree289c979dcb971c009d3c858851af50a55be8a3e4 /Documentation/kbuild
parent6358d6e8b9846c2ff6fd1d4ad2809145635dd813 (diff)
downloadlinux-f49821ee32b76b1a356fab17316eb62430182ecf.tar.xz
kbuild: rename built-in.o to built-in.a
Incremental linking is gone, so rename built-in.o to built-in.a, which is the usual extension for archive files. This patch does two things, first is a simple search/replace: git grep -l 'built-in\.o' | xargs sed -i 's/built-in\.o/built-in\.a/g' The second is to invert nesting of nested text manipulations to avoid filtering built-in.a out from libs-y2: -libs-y2 := $(filter-out %.a, $(patsubst %/, %/built-in.a, $(libs-y))) +libs-y2 := $(patsubst %/, %/built-in.a, $(filter-out %.a, $(libs-y))) Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Diffstat (limited to 'Documentation/kbuild')
-rw-r--r--Documentation/kbuild/makefiles.txt16
1 files changed, 8 insertions, 8 deletions
diff --git a/Documentation/kbuild/makefiles.txt b/Documentation/kbuild/makefiles.txt
index 750aea9edd35..667cd899ada8 100644
--- a/Documentation/kbuild/makefiles.txt
+++ b/Documentation/kbuild/makefiles.txt
@@ -153,18 +153,18 @@ more details, with real examples.
configuration.
Kbuild compiles all the $(obj-y) files. It then calls
- "$(AR) rcSTP" to merge these files into one built-in.o file.
+ "$(AR) rcSTP" to merge these files into one built-in.a file.
This is a thin archive without a symbol table, which makes it
unsuitable as a linker input.
The scripts/link-vmlinux.sh script later makes an aggregate
- built-in.o with "${AR} rcsTP", which creates the thin archive
+ built-in.a with "${AR} rcsTP", which creates the thin archive
with a symbol table and an index, making it a valid input for
the final vmlinux link passes.
The order of files in $(obj-y) is significant. Duplicates in
the lists are allowed: the first instance will be linked into
- built-in.o and succeeding instances will be ignored.
+ built-in.a and succeeding instances will be ignored.
Link order is significant, because certain functions
(module_init() / __initcall) will be called during boot in the
@@ -228,7 +228,7 @@ more details, with real examples.
Note: Of course, when you are building objects into the kernel,
the syntax above will also work. So, if you have CONFIG_EXT2_FS=y,
kbuild will build an ext2.o file for you out of the individual
- parts and then link this into built-in.o, as you would expect.
+ parts and then link this into built-in.a, as you would expect.
--- 3.4 Objects which export symbols
@@ -238,7 +238,7 @@ more details, with real examples.
--- 3.5 Library file goals - lib-y
Objects listed with obj-* are used for modules, or
- combined in a built-in.o for that specific directory.
+ combined in a built-in.a for that specific directory.
There is also the possibility to list objects that will
be included in a library, lib.a.
All objects listed with lib-y are combined in a single
@@ -250,7 +250,7 @@ more details, with real examples.
Note that the same kbuild makefile may list files to be built-in
and to be part of a library. Therefore the same directory
- may contain both a built-in.o and a lib.a file.
+ may contain both a built-in.a and a lib.a file.
Example:
#arch/x86/lib/Makefile
@@ -992,7 +992,7 @@ When kbuild executes, the following steps are followed (roughly):
$(head-y) lists objects to be linked first in vmlinux.
$(libs-y) lists directories where a lib.a archive can be located.
- The rest list directories where a built-in.o object file can be
+ The rest list directories where a built-in.a object file can be
located.
$(init-y) objects will be located after $(head-y).
@@ -1077,7 +1077,7 @@ When kbuild executes, the following steps are followed (roughly):
extra-y := head.o init_task.o
In this example, extra-y is used to list object files that
- shall be built, but shall not be linked as part of built-in.o.
+ shall be built, but shall not be linked as part of built-in.a.
--- 6.7 Commands useful for building a boot image