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| author | Sam Ravnborg <sam@ravnborg.org> | 2009-09-19 10:31:45 +0200 |
|---|---|---|
| committer | Sam Ravnborg <sam@ravnborg.org> | 2009-09-20 12:27:42 +0200 |
| commit | 691ef3e7fdc1fe4dded169d9404f740987f67d66 (patch) | |
| tree | 06e8842f0dd8bb015b678a96655e8c2f17baaaa5 /Documentation/kbuild | |
| parent | f86fd306605287d7c7f4f0f8e8e2a9d49d28b396 (diff) | |
kbuild: introduce ld-option
ld-option is used to check if $(LD) supports a specific option.
Based on patch from Andi Kleen.
Cc: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
First use is to check if option -X is supported (upcoming patch).
Theis is ne
Diffstat (limited to 'Documentation/kbuild')
| -rw-r--r-- | Documentation/kbuild/makefiles.txt | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/Documentation/kbuild/makefiles.txt b/Documentation/kbuild/makefiles.txt index 7847fce13bd..71c602d6168 100644 --- 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 |