change database selection, fix in-memory db

s/cmake-init

@@ -1,13 +1,46 @@
 #!/bin/sh
 
-ERESSEA_DB=db
+ERESSEA_DB=memory
 pkg-config --exists sqlite3 && ERESSEA_DB=sqlite
+
+GETOPT=getopt
+GETOPT_LONG=1
+
+if [ "Darwin" = "$(uname)" ] ; then
+  if [ -x "/usr/local/opt/gnu-getopt/bin/getopt" ] ; then
+    GETOPT="/usr/local/opt/gnu-getopt/bin/getopt"
+  else
+    GETOPT_LONG=0
+  fi
+fi
+
+if [ $GETOPT_LONG -eq 1 ]; then
+  options=$(${GETOPT} -o d: -l db: -- "$@")
+else # assume GNU getopt (long arguments)
+  options=$(${GETOPT} d: "$@")
+fi
+
 # Parse command line arguments
+eval set -- "$options"
+until [ -z "$1" ] ; do
+  case $1 in
+    -d|--db)
+      ERESSEA_DB=$2
+      shift
+    ;;
+    --) shift; break;;
+    (-*) echo "$0: error - unrecognized option $1" 1>&2; exit 1;;
+    (*) break;;
+  esac
+  shift
+done
 while [ ! -z "$1" ] ; do
 if [ "$1" = "--with-db" ] ; then
 ERESSEA_DB=db
 elif [ "$1" = "--with-sqlite" ] ; then
 ERESSEA_DB=sqlite
+elif [ "$1" = "--with-memory" ] ; then
+ERESSEA_DB=memory
 fi
 shift 1
 done

src/CMakeLists.txt

@@ -184,8 +184,10 @@ endif()
 
 add_library(version STATIC ${VERSION_SRC})
 add_library(game ${ERESSEA_SRC})
+
+#add_executable(checker ${CHECK_SRC})
+
 add_executable(eressea ${SERVER_SRC})
-add_executable(checker ${CHECK_SRC})
 if (IWYU_PATH)
 set_property(TARGET eressea PROPERTY C_INCLUDE_WHAT_YOU_USE ${IWYU_PATH})
 endif(IWYU_PATH)

src/kernel/db/memory.c

@@ -1,4 +1,6 @@
+#ifdef _MSC_VER
 #include <platform.h>
+#endif
 #include "driver.h"
 
 #include <util/log.h>
@@ -40,11 +42,10 @@ int db_driver_faction_save(int id, int no, int turn, const char *email, const ch
     return -1;
 }
 
-static int free_data_cb(const void *match)
+static void free_data_cb(void *match)
 {
     char *str = (char *)match;
     free(str);
-    return 0;
 }
 
 int db_driver_open(database_t db, const char *dbname)