[PATCH] [RFC] build with ccache

[Nelson Castillo]

From: Nelson Castillo <arhuaco at freaks-unidos.net>

ccache saves me a lot of time ( http://ccache.samba.org ).

Any reason for not having this in the build script?

This patch:

~ redirects build script messages to stderr
~ adds ccache support

Signed-off-by: Nelson Castillo <arhuaco at freaks-unidos.net>
---

 build |   19 ++++++++++++++-----
 1 files changed, 14 insertions(+), 5 deletions(-)

diff --git a/build b/build
index b0e49eb..48c2d27 100755
--- a/build
+++ b/build
@@ -17,16 +17,25 @@
 PARALLEL=16
 
 if [ -z "$1" ] ; then
-	echo "Specify the build subdir, eg, GTA02 which contains the .config"
-	echo "and will hold the object files"
+	echo "Specify the build subdir, eg, GTA02 which contains the .config" 1>&2
+	echo "and will hold the object files" 1>&2
 	exit 1
 fi
 
 mkdir -p $1
 
 if [ -z "$CROSS_COMPILE" ]; then
-    export CROSS_COMPILE=/usr/local/openmoko/arm/bin/arm-angstrom-linux-gnueabi-
+	CCACHE=`which ccache`
+	if [ -z "$CCACHE" ]; then
+		echo  "ccache not found. Install it if you build this kernel often" 1>&2
+	else
+		echo  "ccache found at $CCACHE. Using it for this build" 1>&2
+	
+	fi
+	export CROSS_COMPILE="$CCACHE /usr/local/openmoko/arm/bin/arm-angstrom-linux-gnueabi-"
 fi
+
+echo -e "Starting build\n" 1>&2
 make O=$1 ARCH=arm silentoldconfig
 
 #
@@ -61,7 +70,7 @@ if [ ! -z "`grep CONFIG_MACH_M800=y $1/.config`" ] ; then
 fi
 
 if [ -z "$PRODUCT" ] ; then
-	echo "Unable to figure out what we are building from the config"
+	echo "Unable to figure out what we are building from the config" 1>&2
 	exit 1
 fi
 
@@ -90,7 +99,7 @@ if [ -d .git ] ; then
 fi
 
 
-echo $MKIMAGECMD
+echo $MKIMAGECMD 1>&2
 
 #
 # actually make it