kbuild: support of new KBUILD_FULL_PATH

From: Boaz Harrosh
Date: Thu Jun 19 2014 - 06:13:09 EST



The commit:

commit 9da0763bdd82572be243fcf5161734f11568960f
Author: Michal Marek <mmarek@xxxxxxx>
Date: Fri Apr 25 23:25:18 2014 +0200

kbuild: Use relative path when building in a subdir of the source tree

When doing make O=<subdir>, use '..' to refer to the source tree. This
allows for more readable compiler messages, and, more importantly, it
sets the VPATH to '..', so filenames in WARN_ON() etc. will be shorter.

Acked-by: Sam Ravnborg <sam@xxxxxxxxxxxx>
Signed-off-by: Michal Marek <mmarek@xxxxxxx>

Broke IDEs and other tools which analyze the make output.
Introduce a new KBUILD_FULL_PATH switch to Makefile that will revert
to the old output if KBUILD_FULL_PATH=1 is specified.
The default is KBUILD_FULL_PATH=0

Is there a document I need to edit for this new parameter?

Signed-off-by: Boaz Harrosh <boaz@xxxxxxxxxxxxx>
---
Makefile | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/Makefile b/Makefile
index 97b2861..778732a 100644
--- a/Makefile
+++ b/Makefile
@@ -149,11 +149,17 @@ else
_all: modules
endif

+# put KBUILD_FULL_PATH=1 if relative path to sources breaks your system
+ifneq ($(KBUILD_FULL_PATH), 1)
+ KBUILD_FULL_PATH=""
+endif
+
ifeq ($(KBUILD_SRC),)
# building in the source tree
srctree := .
else
- ifeq ($(KBUILD_SRC)/,$(dir $(CURDIR)))
+ # if KBUILD_FULL_PATH is not empty then condition will fail
+ ifeq ($(KBUILD_FULL_PATH)$(KBUILD_SRC)/,$(dir $(CURDIR)))
# building in a subdirectory of the source tree
srctree := ..
else
--
1.9.3


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