Merge git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus

[safe/jmp/linux-2.6] / Documentation / kbuild / makefiles.txt

diff --git a/Documentation/kbuild/makefiles.txt b/Documentation/kbuild/makefiles.txt
index 7847fce..71c602d 100644 (file)
--- a/Documentation/kbuild/makefiles.txt
+++ b/Documentation/kbuild/makefiles.txt
@@ -18,6 +18,7 @@ This document describes the Linux kernel Makefiles.
           --- 3.9 Dependency tracking
           --- 3.10 Special Rules
           --- 3.11 $(CC) support functions
+          --- 3.12 $(LD) support functions
 
        === 4 Host Program support
           --- 4.1 Simple Host Program
@@ -570,6 +571,19 @@ more details, with real examples.
                        endif
                endif
 
+--- 3.12 $(LD) support functions
+
+    ld-option
+       ld-option is used to check if $(LD) supports the supplied option.
+       ld-option takes two options as arguments.
+       The second argument is an optional option that can be used if the
+       first option is not supported by $(LD).
+
+       Example:
+               #Makefile
+               LDFLAGS_vmlinux += $(call really-ld-option, -X)
+
+
 === 4 Host Program support
 
 Kbuild supports building executables on the host for use during the