[PATCH 2/8] tools: Define a Makefile function to do subdir processing

From: Arnaldo Carvalho de Melo
Date: Fri Nov 23 2012 - 19:21:04 EST


From: David Howells <dhowells@xxxxxxxxxx>

Define a Makefile function that can be called with $(call ...) to wrap
the subdir make invocations in tools/Makefile.

This will allow us in the next patch to insert bits in there to honour
O= flags when called from the top-level Makefile.

Signed-off-by: David Howells <dhowells@xxxxxxxxxx>
Cc: Borislav Petkov <bp@xxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Cc: Namhyung Kim <namhyung@xxxxxxxxx>
Cc: Paul Mackerras <paulus@xxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Link: http://lkml.kernel.org/r/1378.1352379110@xxxxxxxxxxxxxxxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
tools/Makefile | 24 ++++++++++++------------
tools/scripts/Makefile.include | 8 ++++++++
2 files changed, 20 insertions(+), 12 deletions(-)

diff --git a/tools/Makefile b/tools/Makefile
index 3ae4394..1f9a529 100644
--- a/tools/Makefile
+++ b/tools/Makefile
@@ -31,44 +31,44 @@ help:
@echo ' clean: a summary clean target to clean _all_ folders'

cpupower: FORCE
- $(QUIET_SUBDIR0)power/$@/ $(QUIET_SUBDIR1)
+ $(call descend,power/$@)

firewire lguest perf usb virtio vm: FORCE
- $(QUIET_SUBDIR0)$@/ $(QUIET_SUBDIR1)
+ $(call descend,$@)

selftests: FORCE
- $(QUIET_SUBDIR0)testing/$@/ $(QUIET_SUBDIR1)
+ $(call descend,testing/$@)

turbostat x86_energy_perf_policy: FORCE
- $(QUIET_SUBDIR0)power/x86/$@/ $(QUIET_SUBDIR1)
+ $(call descend,power/x86/$@)

cpupower_install:
- $(QUIET_SUBDIR0)power/$(@:_install=)/ $(QUIET_SUBDIR1) install
+ $(call descend,power/$(@:_install=),install)

firewire_install lguest_install perf_install usb_install virtio_install vm_install:
- $(QUIET_SUBDIR0)$(@:_install=)/ $(QUIET_SUBDIR1) install
+ $(call descend,$(@:_install=),install)

selftests_install:
- $(QUIET_SUBDIR0)testing/$(@:_clean=)/ $(QUIET_SUBDIR1) install
+ $(call descend,testing/$(@:_clean=),install)

turbostat_install x86_energy_perf_policy_install:
- $(QUIET_SUBDIR0)power/x86/$(@:_install=)/ $(QUIET_SUBDIR1) install
+ $(call descend,power/x86/$(@:_install=),install)

install: cpupower_install firewire_install lguest_install perf_install \
selftests_install turbostat_install usb_install virtio_install \
vm_install x86_energy_perf_policy_install

cpupower_clean:
- $(QUIET_SUBDIR0)power/cpupower/ $(QUIET_SUBDIR1) clean
+ $(call descend,power/cpupower,clean)

firewire_clean lguest_clean perf_clean usb_clean virtio_clean vm_clean:
- $(QUIET_SUBDIR0)$(@:_clean=)/ $(QUIET_SUBDIR1) clean
+ $(call descend,$(@:_clean=),clean)

selftests_clean:
- $(QUIET_SUBDIR0)testing/$(@:_clean=)/ $(QUIET_SUBDIR1) clean
+ $(call descend,testing/$(@:_clean=),clean)

turbostat_clean x86_energy_perf_policy_clean:
- $(QUIET_SUBDIR0)power/x86/$(@:_clean=)/ $(QUIET_SUBDIR1) clean
+ $(call descend,power/x86/$(@:_clean=),clean)

clean: cpupower_clean firewire_clean lguest_clean perf_clean selftests_clean \
turbostat_clean usb_clean virtio_clean vm_clean \
diff --git a/tools/scripts/Makefile.include b/tools/scripts/Makefile.include
index 96ce80a..4a9e317 100644
--- a/tools/scripts/Makefile.include
+++ b/tools/scripts/Makefile.include
@@ -41,6 +41,14 @@ else
NO_SUBDIR = :
endif

+#
+# Define a callable command for descending to a new directory
+#
+# Call by doing: $(call descend,directory[,target])
+#
+descend = \
+ $(QUIET_SUBDIR0)$(1) $(QUIET_SUBDIR1) $(2)
+
QUIET_SUBDIR0 = +$(MAKE) -C # space to separate -C and subdir
QUIET_SUBDIR1 =

--
1.7.9.2.358.g22243

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