download_and_compile.sh: minor changes

Consistent indentation for _printLog() vs. other functions, safety
measures for arguments possibly containing spaces, etc.

download_and_compile.sh

@@ -61,6 +61,10 @@ function _log(){
   echo "$@" >> "$LOGFILE"
 }
 
+function _logSep(){
+  _log "***********************************"
+}
+
 function _printLog(){
   # Possible special case for the terminal: echo "${PROGNAME}: $@"
   # That would be more precise but rather verbose, and not all output uses
@@ -84,10 +88,6 @@ function _logOutput(){
   esac
 }
 
-function _logSep(){
-  echo "***********************************" >> $LOGFILE
-}
-
 function _aptUpdate(){
   echo "Asking password for 'apt-get update'..."
   sudo apt-get update
@@ -540,7 +540,7 @@ echo "**************************************"
 #######################################################
 #######################################################
 
-echo $0 $* > $LOGFILE
+echo "$0 $*" > "$LOGFILE"
 _log "VERSION=$VERSION"
 _log "APT_GET_UPDATE=$APT_GET_UPDATE"
 _log "DOWNLOAD_PACKAGES=$DOWNLOAD_PACKAGES"
@@ -619,12 +619,12 @@ fi
 #######################################################
 
 CBD=$(pwd)
-LOGFILE=$CBD/$LOGFILE
+LOGFILE="$CBD/$LOGFILE"
 _log "DIRECTORY=$CBD"
 _logSep
 mkdir -p install
 SUB_INSTALL_DIR=install
-INSTALL_DIR=$CBD/$SUB_INSTALL_DIR
+INSTALL_DIR="$CBD/$SUB_INSTALL_DIR"
 cd "$CBD"
 mkdir -p build