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-rw-r--r--Documentation/kbuild/makefiles.txt23
1 files changed, 12 insertions, 11 deletions
diff --git a/Documentation/kbuild/makefiles.txt b/Documentation/kbuild/makefiles.txt
index ab0a984530d..14c3f4f1b61 100644
--- a/Documentation/kbuild/makefiles.txt
+++ b/Documentation/kbuild/makefiles.txt
@@ -45,7 +45,7 @@ This document describes the Linux kernel Makefiles.
=== 7 Kbuild syntax for exported headers
--- 7.1 header-y
- --- 7.2 objhdr-y
+ --- 7.2 genhdr-y
--- 7.3 destination-y
--- 7.4 generic-y
@@ -1175,15 +1175,16 @@ When kbuild executes, the following steps are followed (roughly):
in an init section in the image. Platform code *must* copy the
blob to non-init memory prior to calling unflatten_device_tree().
- Example:
- #arch/x86/platform/ce4100/Makefile
- clean-files := *dtb.S
+ To use this command, simply add *.dtb into obj-y or targets, or make
+ some other target depend on %.dtb
- DTC_FLAGS := -p 1024
- obj-y += foo.dtb.o
+ A central rule exists to create $(obj)/%.dtb from $(src)/%.dts;
+ architecture Makefiles do no need to explicitly write out that rule.
- $(obj)/%.dtb: $(src)/%.dts
- $(call cmd,dtc)
+ Example:
+ targets += $(dtb-y)
+ clean-files += *.dtb
+ DTC_FLAGS ?= -p 1024
--- 6.8 Custom kbuild commands
@@ -1282,15 +1283,15 @@ See subsequent chapter for the syntax of the Kbuild file.
Subdirectories are visited before their parent directories.
- --- 7.2 objhdr-y
+ --- 7.2 genhdr-y
- objhdr-y specifies generated files to be exported.
+ genhdr-y specifies generated files to be exported.
Generated files are special as they need to be looked
up in another directory when doing 'make O=...' builds.
Example:
#include/linux/Kbuild
- objhdr-y += version.h
+ genhdr-y += version.h
--- 7.3 destination-y