add ccache support and use it in rpmbb

bin/rpmbb

@@ -73,6 +73,11 @@ mkdir -p "$RPMTOPDIR/RPMS"
 test -z "$LISTNAMES" && fatal "Please run with spec(s) name"
 test -n "$LISTRPMARGS" && echog "Run $RPMBUILD with options: '$LISTRPMARGS'"
 
+# enable ccache using
+if [ -n "$CCACHE_ENABLE" ] ; then
+	enable_ccache
+fi
+
 # instead cbuild req
 if [ -n "$BUILDREQ" ] ; then
 	uni_buildreq $LISTNAMES

etc/config

@@ -64,3 +64,9 @@
 
 # Path to Sisyphus repo (where i586/RPMS.classic) for rpmunmets build
 #SISYPHUSPATH=/var/ftp/pub/ALTLinux/Sisyphus/
+
+# enable ccache using
+# CCACHE_ENABLE=yes
+
+# set dir for ccache cache
+# export CCACHE_DIR=$OURTMPDIR/ccache

share/eterbuild/functions/common

@@ -181,3 +181,20 @@ is_ssh_target()
 {
 	echo "$1" | grep -q ":"
 }
+
+enable_ccache()
+{
+	which ccache >/dev/null || fatal "Install ccache package before using"
+
+	# handled in gcc-common
+	export GCC_USE_CCACHE=1
+	# step to gcc-common
+	export CC=gcc CXX=g++
+
+	#export CC="ccache gcc"
+	#export CPP="ccache gcc -E"
+	#export CXX="ccache g++"
+	#export CXXCPP="ccache g++ -E"
+
+}
+

share/eterbuild/functions/config

@@ -53,6 +53,12 @@ BUILDSERVER=
 
 PKGREPLBASE=$ETERBUILDDIR/pkgrepl
 
+# TODO: use common ccache dir
+export CCACHE_DIR=$OURTMPDIR/ccache
+
+# enable ccache using
+# CCACHE_ENABLE=yes
+
 test -f /etc/eterbuild/config && . /etc/eterbuild/config
 
 if [ -f ~/.config/eterbuild ] ; then