diff options
author | Yann Droneaud <ydroneaud@opteya.com> | 2014-07-13 06:15:29 -0400 |
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committer | Michal Marek <mmarek@suse.cz> | 2014-08-05 10:08:11 -0400 |
commit | aa8dbeee5ee012e1ee595dd1df9be04e161a3fd4 (patch) | |
tree | 7327f086fd2fc77336ddf0533bd537c7b9246b92 /Documentation/make | |
parent | 3f1d9a6cec011b0a25a5dff5d9e5012a459ef02f (diff) |
Documentation: headers_install.txt is part of kbuild
'headers_install.txt' from Documentation/make/ is related to Kbuild
so it must be moved in Documentation/kbuild/ directory.
As Documentation/make/ directory has only one file, it will be removed
as a consequence of moving 'headers_install.txt'.
Cc: Kirill A. Shutemov <kirill@shutemov.name>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Rob Landley <rob@landley.net>
Signed-off-by: Yann Droneaud <ydroneaud@opteya.com>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Michal Marek <mmarek@suse.cz>
Diffstat (limited to 'Documentation/make')
-rw-r--r-- | Documentation/make/headers_install.txt | 47 |
1 files changed, 0 insertions, 47 deletions
diff --git a/Documentation/make/headers_install.txt b/Documentation/make/headers_install.txt deleted file mode 100644 index 951eb9f1e040..000000000000 --- a/Documentation/make/headers_install.txt +++ /dev/null | |||
@@ -1,47 +0,0 @@ | |||
1 | Exporting kernel headers for use by userspace | ||
2 | ============================================= | ||
3 | |||
4 | The "make headers_install" command exports the kernel's header files in a | ||
5 | form suitable for use by userspace programs. | ||
6 | |||
7 | The linux kernel's exported header files describe the API for user space | ||
8 | programs attempting to use kernel services. These kernel header files are | ||
9 | used by the system's C library (such as glibc or uClibc) to define available | ||
10 | system calls, as well as constants and structures to be used with these | ||
11 | system calls. The C library's header files include the kernel header files | ||
12 | from the "linux" subdirectory. The system's libc headers are usually | ||
13 | installed at the default location /usr/include and the kernel headers in | ||
14 | subdirectories under that (most notably /usr/include/linux and | ||
15 | /usr/include/asm). | ||
16 | |||
17 | Kernel headers are backwards compatible, but not forwards compatible. This | ||
18 | means that a program built against a C library using older kernel headers | ||
19 | should run on a newer kernel (although it may not have access to new | ||
20 | features), but a program built against newer kernel headers may not work on an | ||
21 | older kernel. | ||
22 | |||
23 | The "make headers_install" command can be run in the top level directory of the | ||
24 | kernel source code (or using a standard out-of-tree build). It takes two | ||
25 | optional arguments: | ||
26 | |||
27 | make headers_install ARCH=i386 INSTALL_HDR_PATH=/usr/include | ||
28 | |||
29 | ARCH indicates which architecture to produce headers for, and defaults to the | ||
30 | current architecture. The linux/asm directory of the exported kernel headers | ||
31 | is platform-specific, to see a complete list of supported architectures use | ||
32 | the command: | ||
33 | |||
34 | ls -d include/asm-* | sed 's/.*-//' | ||
35 | |||
36 | INSTALL_HDR_PATH indicates where to install the headers. It defaults to | ||
37 | "./usr/include". | ||
38 | |||
39 | The command "make headers_install_all" exports headers for all architectures | ||
40 | simultaneously. (This is mostly of interest to distribution maintainers, | ||
41 | who create an architecture-independent tarball from the resulting include | ||
42 | directory.) You also can use HDR_ARCH_LIST to specify list of architectures. | ||
43 | Remember to provide the appropriate linux/asm directory via "mv" or "ln -s" | ||
44 | before building a C library with headers exported this way. | ||
45 | |||
46 | The kernel header export infrastructure is maintained by David Woodhouse | ||
47 | <dwmw2@infradead.org>. | ||