linux-kernel - [PATCH v5 5/5] tools: Connect to the kernel build system

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Date:	Wed, 11 Apr 2012 18:36:18 +0200
From:	Borislav Petkov <bp@...64.org>
To:	Ingo Molnar <mingo@...nel.org>,
	Arnaldo Carvalho de Melo <acme@...radead.org>,
	Michal Marek <mmarek@...e.cz>, Sam Ravnborg <sam@...nborg.org>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Borislav Petkov <borislav.petkov@....com>
Subject: [PATCH v5 5/5] tools: Connect to the kernel build system

From: Borislav Petkov <borislav.petkov@....com>

Now you can do

$ make tools/<toolname>

from the toplevel kernel directory and have the respective tool built.

If you want to build and install it, do

$ make tools/<toolname>_install

$ make tools/<toolname>_clean

should clean the respective tool directories.

If you want to clean all in tools, simply do

$ make tools/clean

Also, if you want to get what the possible targets are, simply calling

$ make tools/

should give you the short help.

$ make tools/install

installs all tools, of course. Doh.

Cc: Sam Ravnborg <sam@...nborg.org>
Signed-off-by: Borislav Petkov <borislav.petkov@....com>
---
 Makefile       |    7 +++++++
 tools/Makefile |   10 ++++++++++
 2 files changed, 17 insertions(+)

diff --git a/Makefile b/Makefile
index 0df3d003a079..f7f738117128 100644
--- a/Makefile
+++ b/Makefile
@@ -1468,6 +1468,13 @@ kernelrelease:
 kernelversion:
 	@echo $(KERNELVERSION)
 
+# Clear a bunch of variables before executing the submake
+tools/: FORCE
+	$(Q)$(MAKE) LDFLAGS= MAKEFLAGS= -C $(src)/tools/
+
+tools/%: FORCE
+	$(Q)$(MAKE) LDFLAGS= MAKEFLAGS= -C $(src)/tools/ $*
+
 # Single targets
 # ---------------------------------------------------------------------------
 # Single targets are compatible with:
diff --git a/tools/Makefile b/tools/Makefile
index f87c0ec63e6c..3ae43947a171 100644
--- a/tools/Makefile
+++ b/tools/Makefile
@@ -14,6 +14,16 @@ help:
 	@echo '  vm         - misc vm tools'
 	@echo '  x86_energy_perf_policy - Intel energy policy tool'
 	@echo ''
+	@echo 'You can do:'
+	@echo ' $$ make -C tools/<tool>_install'
+	@echo ''
+	@echo '  from the kernel command line to build and install one of'
+	@echo '  the tools above'
+	@echo ''
+	@echo '  $$ make tools/install'
+	@echo ''
+	@echo '  installs all tools.'
+	@echo ''
 	@echo 'Cleaning targets:'
 	@echo ''
 	@echo '  all of the above with the "_clean" string appended cleans'
-- 
1.7.9.3.362.g71319

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