buildgcc: Add option to use ccache

This mimicks abuild: -y enables ccache.

Change-Id: I3ac1f809729af816efbc64f5789ab430e1a6a6b2
Signed-off-by: Patrick Georgi <patrick@georgi-clan.de>
Reviewed-on: http://review.coreboot.org/400
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>

diff --git a/util/crossgcc/buildgcc b/util/crossgcc/buildgcc
index f86332da0ee6abaf58adba41171290eac0a3c8fc..d13e65d161452bd529fcc9ee1bf17ea335d27b70 100755 (executable)
--- a/util/crossgcc/buildgcc
+++ b/util/crossgcc/buildgcc
@@ -126,6 +126,7 @@ myhelp()
        printf "    [-h|--help]                   print this help and exit\n"
        printf "    [-c|--clean]                  remove temporary files before build\n"
        printf "    [-t|--savetemps]              don't remove temporary files after build\n"
+       printf "    [-y|--ccache]                 Use ccache when building cross compiler\n"
        printf "    [-j|--jobs <num>]             run <num> jobs in parallel in make\n"
        printf "    [-p|--platform <platform>]    target platform to build cross compiler for\n"
        printf "                                  (defaults to $TARGETARCH)\n"
@@ -167,11 +168,11 @@ getopt - > /dev/null 2>/dev/null || gcc -o getopt getopt.c
 getoptbrand="`getopt -V | sed -e '1!d' -e 's,^\(......\).*,\1,'`"
 if [ "${getoptbrand}" = "getopt" ]; then
        # Detected GNU getopt that supports long options.
-       args=`getopt -l version,help,clean,directory:,platform:,jobs:,destdir:,savetemps,skip-gdb Vhcd:p:j:D:tG -- "$@"`
+       args=`getopt -l version,help,clean,directory:,platform:,jobs:,destdir:,savetemps,skip-gdb,ccache Vhcd:p:j:D:tGy -- "$@"`
        eval set "$args"
 else
        # Detected non-GNU getopt
-       args=`getopt Vhcd:p:j:D:tG $*`
+       args=`getopt Vhcd:p:j:D:tGy $*`
        set -- $args
 fi
 
@@ -192,6 +193,7 @@ while true ; do
                -j|--jobs)      shift; JOBS="-j $1"; shift;;
                -G|--gdb)       shift; SKIPGDB=0;;
                -S|--scripting) shift; SKIPPYTHON=0;;
+               -y|--ccache)    shift; USECCACHE=1;;
                --)             shift; break;;
                -*)             printf "Invalid option\n\n"; myhelp; exit 1;;
                *)              break;;
@@ -325,6 +327,10 @@ if [ `uname` = "Darwin" ]; then
        fi
 fi
 
+if [ "$USECCACHE" = 1 ]; then
+       CC="ccache $CC"
+fi
+
 mkdir -p build-gmp build-mpfr build-mpc build-libelf build-binutils \
                build-gcc build-python build-expat
 if [ $SKIPGDB -eq 0 ]; then