From e7c1883f618628de95c67070e8d58bc15d546b34 Mon Sep 17 00:00:00 2001
From: Luis Machado <luis.machado@linaro.org>
Date: Fri, 11 Jan 2019 15:52:49 -0200
Subject: Make the default target only build the utils

The following patch adjusts the main Makefile and secondary Makefile
(Test.mk) so the default target only builds the pm-qa utils from sources,
without running the tests.

Also document some variables and targets.

2018-01-11  Luis Machado  <luis.machado@linaro.org>

	* Makefile: Document target "all".
	* README: Document how to build only the pm-qa utils.
	* Test.mk: Document misc variables and targets.
	(SRC): Hold list of all utils' .c files.
	($(EXEC)): New target to build all utils from sources.
	(check): Move target closer to uncheck target.

Signed-off-by: Luis Machado <luis.machado@linaro.org>
---
 Makefile |  2 ++
 README   |  4 ++++
 Test.mk  | 19 +++++++++++++------
 3 files changed, 19 insertions(+), 6 deletions(-)

diff --git a/Makefile b/Makefile
index d76deb7..1c7bc9b 100644
--- a/Makefile
+++ b/Makefile
@@ -22,6 +22,8 @@
 #       - initial API and implementation
 #
 hotplug_allow_cpu0?=0
+
+# Build all the utils required by the tests.
 all:
 	@(cd utils; $(MAKE))
 
diff --git a/README b/README
index b976727..8d1519f 100644
--- a/README
+++ b/README
@@ -1,5 +1,9 @@
 Commands
 ========
+- If you just want to build the supporting utils for the pm-qa tests, invoke:
+
+	make
+
 - In order to run the tests, invoke as root:
 
 	make check
diff --git a/Test.mk b/Test.mk
index 44f0ece..455dc3a 100644
--- a/Test.mk
+++ b/Test.mk
@@ -26,14 +26,15 @@ TST=$(sort $(wildcard *[!{sanity}].sh))
 LOG=$(TST:.sh=.log)
 CFLAGS?=-g -Wall -pthread
 CC?=gcc
-SRC=$(wildcard *.c)
-EXEC=$(SRC:%.c=%)
 
-check: build_utils run_tests
+# All utils' source files.
+SRC=$(wildcard ../utils/*.c) $(wildcard ../cpuidle/*.c)
+
+# All executable files built from the utils' source files.
+EXEC=$(SRC:%.c=%)
 
-build_utils:
-	$(CC) ../utils/uevent_reader.c -o ../utils/uevent_reader
-	$(CC) ../utils/cpucycle.c -o ../utils/cpucycle
+# Build the utils and run the tests.
+build_utils: $(EXEC)
 
 SANITY_STATUS:= $(shell if test $(SNT) && test -f $(SNT); then \
 		./$(SNT); if test "$$?" -eq 0; then echo 0; else \
@@ -55,9 +56,15 @@ run_tests:
 #	@cat $(<:.sh=.txt)
 endif
 
+# Target for building all the utils we need, from sources.
+$(EXEC): $(SRC)
+	$(CC) $(CFLAGS) $@.c -o $@
+
 clean:
 	rm -f *.o $(EXEC)
 
+check: build_utils run_tests
+
 uncheck:
 	-@$(shell test ! -z "$(LOG)" && rm -f $(LOG))
 
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