Add memory counters and fix makefile

• Add the sensor "memory_counters"
• Fix ld error
• Fix make

src/memory_option.sh

@@ -3,9 +3,9 @@
 # SPDX-License-Identifier: GPL-3.0-or-later
 # Copyright (C) 2018-2023 Georges Da Costa <georges.da-costa@irit.fr>
 
-MEMINFO_PATH="/proc/meminfo"
+meminfo_path=/proc/meminfo
 
-FUNCTION_TEMPLATE="void set_result_offset%s(GenericPointer ptr, GenericPointer data)
+function_template="void set_result_offset%s(GenericPointer ptr, GenericPointer data)
 {
     uint64_t* result = (uint64_t *) ptr;
     result[%s] = (uint64_t) data;
@@ -14,16 +14,15 @@ FUNCTION_TEMPLATE="void set_result_offset%s(GenericPointer ptr, GenericPointer d
 nb_counters=0
 
 echo '#include <inttypes.h>'
-echo "#include <info_reader.h>"
+echo '#include <info_reader.h>'
 echo
 
 echo 'static char *memory_counters[] = {'
 while read line; do
-  nb_counters=$(expr $nb_counters + 1)
-  word=$(echo $line | awk '{print $1}')
-  echo "    \"${word::-1}\","
-done <$MEMINFO_PATH
-echo "};"
+  : $((nb_counters += 1))
+  echo "$line" | awk -F ':' '{printf("    \"%s\",\n", $1)}'
+done < "$meminfo_path"
+echo '};'
 echo
 
 echo "#define NB_COUNTERS $nb_counters"
@@ -31,16 +30,16 @@ echo
 
 count=0
 while [ $count -lt $nb_counters ]; do
-  printf "$FUNCTION_TEMPLATE" $count $count
-  count=$(expr $count + 1)
+  printf "$function_template" $count $count
+  : $((count += 1))
 done
 
-echo "static void (*setter_functions[])(GenericPointer, GenericPointer) = {"
+echo 'static void (*setter_functions[])(GenericPointer, GenericPointer) = {'
 count=0
 while [ $count -lt $nb_counters ]; do
   echo "    set_result_offset$count,"
-  count=$(expr $count + 1)
+  : $((count += 1))
 done
-echo "};"
+echo '};'
 echo