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| author | Masahiro Yamada <masahiroy@kernel.org> | 2020-02-02 01:49:23 +0900 |
|---|---|---|
| committer | Masahiro Yamada <masahiroy@kernel.org> | 2020-02-04 01:50:52 +0900 |
| commit | faa7bdd7e9e1441ed82819b8db8bb43d3d3fd818 (patch) | |
| tree | 84be5cd6c8cb0f95f6dd6fa5ff8a2f435e2e4825 /Documentation/kbuild/makefiles.rst | |
| parent | c8fb7d7e48d11520ad24808cfce7afb7b9c9f798 (diff) | |
| download | linux-faa7bdd7e9e1441ed82819b8db8bb43d3d3fd818.tar.gz | |
kbuild: fix the document to use extra-y for vmlinux.lds
The difference between "always" and "extra-y" is that the targets listed in $(always) are always built, whereas the ones in $(extra-y) are built only when KBUILD_BUILTIN is set. So, "make modules" does not build the targets in $(extra-y). vmlinux.lds is only needed for linking vmlinux. So, adding it to extra-y is more correct. In fact, arch/x86/kernel/Makefile does this. Fix the example code. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Diffstat (limited to 'Documentation/kbuild/makefiles.rst')
| -rw-r--r-- | Documentation/kbuild/makefiles.rst | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/Documentation/kbuild/makefiles.rst b/Documentation/kbuild/makefiles.rst index d7e6534a8505..b1733b877025 100644 --- a/Documentation/kbuild/makefiles.rst +++ b/Documentation/kbuild/makefiles.rst @@ -1269,12 +1269,12 @@ When kbuild executes, the following steps are followed (roughly): Example:: #arch/x86/kernel/Makefile - always := vmlinux.lds + extra-y := vmlinux.lds #Makefile export CPPFLAGS_vmlinux.lds += -P -C -U$(ARCH) - The assignment to $(always) is used to tell kbuild to build the + The assignment to extra-y is used to tell kbuild to build the target vmlinux.lds. The assignment to $(CPPFLAGS_vmlinux.lds) tells kbuild to use the specified options when building the target vmlinux.lds. |