Fix search of lua interpreter. Closes #301.

1 files changed, 5 insertions, 5 deletions

diff --git a/configure b/configure
index b1fa834a..33e52d9a 100755
--- a/configure
+++ b/configure
@@ -262,17 +262,17 @@ search_interpreter() {
       find_lua="$LUA_BINDIR"
    elif [ "$LUA_DIR_SET" = "yes" ]
    then
-      if [ -f "$LUA_DIR/bin/lua$suffix" ]
+      if [ -f "$LUA_DIR/bin/lua$LUA_SUFFIX" ]
       then
          find_lua="$LUA_DIR/bin"
       fi
    else
-      find_lua=`find_program lua$suffix`
+      find_lua=`find_program lua$LUA_SUFFIX`
    fi
-   if [ -n "$find_lua" ]
+   if [ -n "$find_lua" -a -x "$find_lua/lua$LUA_SUFFIX" ]
    then
-      echo "Lua interpreter: $find_lua/lua$suffix..."
-      detect_lua_version "$find_lua/lua$suffix"
+      echo "Lua interpreter found: $find_lua/lua$LUA_SUFFIX..."
+      detect_lua_version "$find_lua/lua$LUA_SUFFIX"
       return 0
    fi
    return 1