- update cppcheck script to install cppcheck if missing and check multiple paths for cfg file

mk/linux/mg_cppcheck.sh

@@ -4,12 +4,23 @@
 # Written by Mark Vejvoda <mark_vejvoda@hotmail.com>
 # Copyright (c) 2011 Mark Vejvoda under GNU GPL v3.0+
 
+if ! cppcheck_loc="$(type -p "cppcheck")" || [ -z "$cppcheck_loc" ]; then
+    # install foobar here
+    echo "CPPCHECK is not installed, installing now..."
+    sudo apt install cppcheck
+fi
+
 # (Actual) Location of the cppcheck binary
 CPPCHECK=$(readlink -f $(which cppcheck))
 
 # cppcheck now depends on this library (see 'cppcheck --help' for the '--library' option)
 # If you use the Debian / Ubuntu package set this to: /usr/share/cppcheck/cfg/std.cfg
-CPPCHECKLIB=$(dirname $CPPCHECK)/cfg/std.cfg
+if [ -e "$(dirname $CPPCHECK)/cfg/std.cfg" ]; then 
+    CPPCHECKLIB=$(dirname $CPPCHECK)/cfg/std.cfg
+elif [ -e "/usr/share/cppcheck/cfg/std.cfg" ]; then 
+    CPPCHECKLIB=/usr/share/cppcheck/cfg/std.cfg
+fi
+
 
 # File to write results to
 LOGFILE=/tmp/cppcheck.log