idlestat: Add Makefile CROSS_COMPILE support

Launchpad Bug #1306587: Makefile doesn't use CROSS_COMPILE flag.
Add the CROSS_COMPILE flag support to allow cross compile and build of idlestat
for other targets.

Signed-off-by: Christian Muller <christian.muller@linaro.org>

1 files changed, 5 insertions, 2 deletions

diff --git a/Makefile b/Makefile
index 5838e0f..f74b48c 100644
--- a/Makefile
+++ b/Makefile
@@ -22,14 +22,17 @@
 #     Zoran Markovic <zoran.markovic@linaro.org>
 #
 CFLAGS?=-g -Wall
-CC?=gcc
+CC=gcc
 
 OBJS = idlestat.o topology.o trace.o utils.o
 
 default: idlestat
 
+%.o: %.c
+	$(CROSS_COMPILE)$(CC) -c -o $@ $< $(CFLAGS)
+
 idlestat: $(OBJS)
-	$(CC) ${CFLAGS} $(OBJS) -o $@
+	$(CROSS_COMPILE)$(CC) $(CFLAGS) $(OBJS) -o $@
 
 clean:
 	rm -f $(OBJS) idlestat