kbuild: replace genhdr-y with generated-y
Originally, generated-y and genhdr-y had different meaning, like
follows:
- generated-y: generated headers (other than asm-generic wrappers)
- header-y : headers to be exported
- genhdr-y : generated headers to be exported (generated-y + header-y)
Since commit fcc8487d477a ("uapi: export all headers under uapi
directories"), headers under UAPI directories are all exported.
So, there is no more difference between generated-y and genhdr-y.
We see two users of genhdr-y, arch/{arm,x86}/include/uapi/asm/Kbuild.
They generate some headers in arch/{arm,x86}/include/generated/uapi/asm
directories, which are obviously exported.
Replace them with generated-y, and abolish genhdr-y.
Change-Id: I9b8b97c39673e93e3d1215090f31d68beffddbd7
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Git-Commit: ae3f4151737d2aad271e5b1f2553c5d56e52850c
Git-Repo: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
[bharad@codeaurora.org: resolve trivial merge conflicts]
Signed-off-by: Naitik Bharadiya <bharad@codeaurora.org>
diff --git a/Documentation/kbuild/makefiles.txt b/Documentation/kbuild/makefiles.txt
index 9599729..2699dd8 100644
--- a/Documentation/kbuild/makefiles.txt
+++ b/Documentation/kbuild/makefiles.txt
@@ -45,11 +45,10 @@
=== 7 Kbuild syntax for exported headers
--- 7.1 no-export-headers-y
- --- 7.2 genhdr-y
- --- 7.3 generic-y
- --- 7.4 generated-y
- --- 7.5 mandatory-y
- --- 7.6 subdir-y
+ --- 7.2 generic-y
+ --- 7.3 generated-y
+ --- 7.4 mandatory-y
+ --- 7.5 subdir-y
=== 8 Kbuild Variables
=== 9 Makefile language
@@ -1237,7 +1236,7 @@
that may be shared between individual architectures.
The recommended approach how to use a generic header file is
to list the file in the Kbuild file.
- See "7.3 generic-y" for further info on syntax etc.
+ See "7.2 generic-y" for further info on syntax etc.
--- 6.11 Post-link pass
@@ -1278,17 +1277,7 @@
avoid exporting specific headers (e.g. kvm.h) on architectures that do
not support it. It should be avoided as much as possible.
- --- 7.2 genhdr-y
-
- genhdr-y specifies asm files to be generated.
-
- Example:
- #arch/x86/include/uapi/asm/Kbuild
- genhdr-y += unistd_32.h
- genhdr-y += unistd_64.h
- genhdr-y += unistd_x32.h
-
- --- 7.3 generic-y
+ --- 7.2 generic-y
If an architecture uses a verbatim copy of a header from
include/asm-generic then this is listed in the file
@@ -1315,11 +1304,10 @@
Example: termios.h
#include <asm-generic/termios.h>
- --- 7.4 generated-y
+ --- 7.3 generated-y
If an architecture generates other header files alongside generic-y
- wrappers, and not included in genhdr-y, then generated-y specifies
- them.
+ wrappers, generated-y specifies them.
This prevents them being treated as stale asm-generic wrappers and
removed.
@@ -1328,7 +1316,7 @@
#arch/x86/include/asm/Kbuild
generated-y += syscalls_32.h
- --- 7.5 mandatory-y
+ --- 7.4 mandatory-y
mandatory-y is essentially used by include/uapi/asm-generic/Kbuild.asm
to define the minimun set of headers that must be exported in
@@ -1337,7 +1325,7 @@
The convention is to list one subdir per line and
preferably in alphabetic order.
- --- 7.6 subdir-y
+ --- 7.5 subdir-y
subdir-y may be used to specify a subdirectory to be exported.
diff --git a/arch/arm/include/uapi/asm/Kbuild b/arch/arm/include/uapi/asm/Kbuild
index 607f702..424935e 100644
--- a/arch/arm/include/uapi/asm/Kbuild
+++ b/arch/arm/include/uapi/asm/Kbuild
@@ -1,6 +1,6 @@
# UAPI Header export list
include include/uapi/asm-generic/Kbuild.asm
-genhdr-y += unistd-common.h
-genhdr-y += unistd-oabi.h
-genhdr-y += unistd-eabi.h
+generated-y += unistd-common.h
+generated-y += unistd-oabi.h
+generated-y += unistd-eabi.h
diff --git a/arch/x86/include/uapi/asm/Kbuild b/arch/x86/include/uapi/asm/Kbuild
index 83b6e9a..da1489c 100644
--- a/arch/x86/include/uapi/asm/Kbuild
+++ b/arch/x86/include/uapi/asm/Kbuild
@@ -1,6 +1,6 @@
# UAPI Header export list
include include/uapi/asm-generic/Kbuild.asm
-genhdr-y += unistd_32.h
-genhdr-y += unistd_64.h
-genhdr-y += unistd_x32.h
+generated-y += unistd_32.h
+generated-y += unistd_64.h
+generated-y += unistd_x32.h
diff --git a/scripts/Makefile.asm-generic b/scripts/Makefile.asm-generic
index e4d017d5..95f7d80 100644
--- a/scripts/Makefile.asm-generic
+++ b/scripts/Makefile.asm-generic
@@ -15,7 +15,7 @@
# Stale wrappers when the corresponding files are removed from generic-y
# need removing.
-generated-y := $(generic-y) $(genhdr-y) $(generated-y)
+generated-y := $(generic-y) $(generated-y)
all-files := $(patsubst %, $(obj)/%, $(generated-y))
old-headers := $(wildcard $(obj)/*.h)
unwanted := $(filter-out $(all-files),$(old-headers))