[cleanup] Whitespace and an improved comment

bin/dunecontrol

@@ -649,17 +649,18 @@ run_default_configure () {
   done
 
       # we have to export the compiler and compiler flags
-      # such that they are honored by cmake.
+      # such that they are honored by CMake, i.e., filter them out
+      # and put them before the CMake commnd
       flags="CXX CC CXXFLAGS CFLAGS CPPFLAGS LDFLAGS F77 FFLAGS FLIBS FC FCFLAGS FCLIBS LIBS"
       for i in  $flags; do
         cflags=`echo "$PARAMS" | $GREP $i= | $SED -e "s/^\($i=\"[^\"]*\"\).*/\1/" -e "s/.*[$BLANK]\($i=\"[^\"]*\"\).*/\1/" -e "s/^\($i='[^']*'\).*/\1/" -e "s/.*[$BLANK]\($i='[^']*'\).*/\1/"`
         if test -n "$cflags" && test "$PARAMS" != "$cflags" ; then
+          PREPARAMS="$PREPARAMS $cflags"
+        else
+          cflags=`echo "$PARAMS" | $GREP $i= | $SED -e "s/^\($i=[^$BLANK]*\).*/\1/" -e "s/.*[$BLANK]\($i=[^$BLANK]*\).*/\1/"`
+          if test -n "$cflags" && test "$PARAMS" != "$cflags" ; then
             PREPARAMS="$PREPARAMS $cflags"
-          else
-           cflags=`echo "$PARAMS" | $GREP $i= | $SED -e "s/^\($i=[^$BLANK]*\).*/\1/" -e "s/.*[$BLANK]\($i=[^$BLANK]*\).*/\1/"`
-           if test -n "$cflags" && test "$PARAMS" != "$cflags" ; then
-            PREPARAMS="$PREPARAMS $cflags"
-           fi
+          fi
         fi
       done
       # MPI flags are special. find_package(MPI) does not honor MPICC, MPICXX
@@ -668,11 +669,11 @@ run_default_configure () {
         comp=`echo "$PARAMS" | $GREP MPI$i= | $SED -e "s/^\($i=\"[^\"]*\"\).*/\1/" -e "s/.*[$BLANK]\($i=\"[^\"]*\"\).*/\1/" -e "s/^\($i='[^']*'\).*/\1/" -e "s/.*[$BLANK]\($i='[^']*'\).*/\1/"`
         if test -n "$comp" && test "$PARAMS" != "$comp" ; then
           CMAKE_FLAGS="-DMPI_$(echo $i| $SED 's/^CC$/C/')""_COMPILER:FILEPATH=`which $comp` $CMAKE_FLAGS"
-          else
-            comp=`echo "$PARAMS" | $GREP MPI$i= | $SED -e "s/^MPI$i=\([^$BLANK]*\).*/\1/" -e "s/.*[$BLANK]MPI$i=\([^$BLANK]*\).*/\1/"`
-            if test -n "$comp" && test "$PARAMS" != "$comp" ; then
-              CMAKE_FLAGS="-DMPI_$(echo $i| $SED 's/^CC$/C/')""_COMPILER:FILEPATH=`which $comp` $CMAKE_FLAGS"
-            fi
+        else
+          comp=`echo "$PARAMS" | $GREP MPI$i= | $SED -e "s/^MPI$i=\([^$BLANK]*\).*/\1/" -e "s/.*[$BLANK]MPI$i=\([^$BLANK]*\).*/\1/"`
+          if test -n "$comp" && test "$PARAMS" != "$comp" ; then
+            CMAKE_FLAGS="-DMPI_$(echo $i| $SED 's/^CC$/C/')""_COMPILER:FILEPATH=`which $comp` $CMAKE_FLAGS"
+          fi
         fi
       done
       # create build directory if requested