[klibc] Update the documentation about how to get headers

We now rely on "make headers_install", so document that fact.  It is
actually a simpler procedure in many ways.

Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>

1 files changed, 6 insertions, 7 deletions

diff --git a/usr/klibc/README.klibc b/usr/klibc/README.klibc
index b4135cb4753b1..8b6e92314b9b1 100644
--- a/usr/klibc/README.klibc
+++ b/usr/klibc/README.klibc
@@ -8,13 +8,12 @@ The build procedure is not very polished yet, but it should work like
 this:
 
 a) In the source root directory (the directory above the one in which
-   this file is found) create a symlink called "linux" pointing to a
-   reasonably recent Linux kernel tree (2.4 or 2.6 should be OK.)
-   This tree must have the include/asm symlink set up for the
-   architecture you're compiling for, and include/linux/autoconf.h
-   must exist.  The easiest way to make sure of all of these is to do
-   a "make config" or any of its variants on the kernel tree is
-   question, followed by a "make dep" (2.4) or "make prepare" (2.6).
+   this file is found) create a symlink called "linux" pointing to the
+   target of "make headers_install" from a recent Linux kernel tree.
+   This can be done by extracting the Linux kernel into a directory,
+   running "make headers_install" for the appropriate architecture,
+   and then making a symlink to the "usr" subdirectory of that directory
+   tree.
 
 b) If you're cross-compiling, you need to set KLIBCARCH to the
    appropriate architecture, and set CROSS_COMPILE to your toolchain