On 06/19/2014 05:52 PM, Boaz Harrosh wrote:
>
> The commit 9da0763bdd82572be243fcf5161734f11568960f
>
> 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 <[email protected]>
> Signed-off-by: Michal Marek <[email protected]>
>
> 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
>
> Signed-off-by: Boaz Harrosh <[email protected]>
Thanks Sir Michal
Please feel free to check out my broken grammar and change
what you see fit.
BTW: The old system was sensitive to absolute paths so if
I compile on local machine say at:
/home/boaz/dev/lin/
but then go to a network station and do "make install" in:
/mnt/boaz/home/boaz/dev/lin/
The build would attempt to rebuild everything what I do
is cd /net/boaz/home/boaz/dev on local and remote so the
make just works. Your patch actually fixed that ;-)
Thanks
Boaz
> ---
> Documentation/kbuild/kbuild.txt | 9 +++++++++
> Makefile | 13 ++++++++-----
> 2 files changed, 17 insertions(+), 5 deletions(-)
>
> diff --git a/Documentation/kbuild/kbuild.txt b/Documentation/kbuild/kbuild.txt
> index 6466704..9133b47 100644
> --- a/Documentation/kbuild/kbuild.txt
> +++ b/Documentation/kbuild/kbuild.txt
> @@ -77,6 +77,15 @@ Specify the output directory when building the kernel.
> The output directory can also be specified using "O=...".
> Setting "O=..." takes precedence over KBUILD_OUTPUT.
>
> +KBUILD_FULL_PATH
> +--------------------------------------------------
> +Since Linux v3.16-rc1 the Kernel build system prefers to use
> +relative paths when supplying file-paths to gcc and other
> +tools. This will break IDEs and other environments that would
> +parse the gcc output to find files and lines.
> +Use KBUILD_FULL_PATH=1 on make command line to revert to old
> +way of feeding tools with full-paths.
> +
> KBUILD_DEBARCH
> --------------------------------------------------
> For the deb-pkg target, allows overriding the normal heuristics deployed by
> diff --git a/Makefile b/Makefile
> index 97b2861..51fcebd 100644
> --- a/Makefile
> +++ b/Makefile
> @@ -153,11 +153,14 @@ ifeq ($(KBUILD_SRC),)
> # building in the source tree
> srctree := .
> else
> - ifeq ($(KBUILD_SRC)/,$(dir $(CURDIR)))
> - # building in a subdirectory of the source tree
> - srctree := ..
> - else
> - srctree := $(KBUILD_SRC)
> + srctree := $(KBUILD_SRC)
> +
> + # if KBUILD_FULL_PATH=1 then do not use relative path
> + ifneq ($(KBUILD_FULL_PATH), 1)
> + ifeq ($(KBUILD_SRC)/,$(dir $(CURDIR)))
> + # building in a subdirectory of the source tree
> + srctree := ..
> + endif
> endif
> endif
> objtree := .
>
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