--- a/src/makefile
+++ b/src/makefile
@@ -13,7 +13,8 @@
 # See src/gui-qt/highlight.pro for the Qt GUI compilation options
 
 #CXX=clang++
-CXX=g++
+#CXX=g++
+CXX ?= c++
 
 # was: qmake-qt5
 QMAKE=qmake
@@ -38,11 +39,11 @@
 
 # If Lua 5.2 is not default on your system yet you have to
 # use lua5.1 in the pkg-config calls
-
-LUA_CFLAGS=$(shell pkg-config --cflags lua)
+LUAPC ?= lua
+LUA_CFLAGS=$(shell pkg-config --cflags $(LUAPC))
 
 # default lua lib
-LUA_LIBS=$(shell pkg-config --libs lua)
+LUA_LIBS=$(shell pkg-config --libs $(LUAPC))
 
 # luajit lib
 # LUA_LIBS=$(shell pkg-config --libs luajit)