From 84d7a21071fa177657674596885c870c614d600b Mon Sep 17 00:00:00 2001
From: Christian Pointner <equinox@helsinki.at>
Date: Sun, 26 Jul 2015 20:00:40 +0200
Subject: make it work with lua 5.2


diff --git a/src/configure b/src/configure
index cc8e728..6b8bdf6 100755
--- a/src/configure
+++ b/src/configure
@@ -26,11 +26,15 @@ USE_CLANG=0
 
 LUA_LDFLAGS='-lm'
 LUA_DIR=''
+LUA=''
+LUA_VER=''
+
 
 print_usage() {
   echo "configure --help                    print this"
   echo "          --target=<TARGET>         build target i.e. Linux (default: autodetect)"
   echo "          --with-lua=<DIR>          use this lua tree instead of system default"
+  echo "          --lua-version=nnn         set fixed Lua version for automatic detection (501 -> 5.1, 502 -> 5.2)"
   echo "          --use-clang               use clang/llvm as compiler/linker"
 }
 
@@ -46,6 +50,9 @@ do
   --with-lua=*)
     LUA_DIR=${arg#--with-lua=}
   ;;
+  --lua-version=*)
+    LUA_VER=${arg#--lua-version=}
+  ;;
   --help)
     print_usage
     exit 0
@@ -87,14 +94,32 @@ esac
 
 test_lua_version()
 {
-  LUA_VERSION=`cat $1 | grep "#define LUA_VERSION[ 	]" | cut -f2- | tr -d '"' | sed -e 's/Lua \([0-9][0-9.]*\)/\1/'`
+  LUA_VERSION_MAJ=`cat $1 | grep "#define LUA_VERSION_MAJOR[ 	]" | cut -f2- | tr -d '"'`
+  LUA_VERSION_MIN=`cat $1 | grep "#define LUA_VERSION_MINOR[ 	]" | cut -f2- | tr -d '"'`
+  LUA_VERSION_REL=`cat $1 | grep "#define LUA_VERSION_RELEASE[ 	]" | cut -f2- | tr -d '"'`
+
+  LUA_VERSION="$LUA_VERSION_MAJ.$LUA_VERSION_MIN"
+  LUA_RELEASE="$LUA_VERSION_MAJ.$LUA_VERSION_MIN.$LUA_VERSION_REL"
+
+  if [ -z "$LUA_VERSION_MAJ" ]; then
+      LUA_VERSION=`cat $1 | grep "#define LUA_VERSION[ 	]" | cut -f2- | tr -d '"' | sed -e 's/Lua \([0-9][0-9.]*\)/\1/'`
+      LUA_RELEASE=`cat $1 | grep "#define LUA_RELEASE[ 	]" | cut -f2- | tr -d '"' | sed -e 's/Lua //'`
+  fi
+
   LUA_VERSION_NUM=`cat $1 | grep "#define LUA_VERSION_NUM" | awk '{ print $3 }'`
-  LUA_RELEASE=`cat $1 | grep "#define LUA_RELEASE[ 	]" | cut -f2-`
 
-  if [ $LUA_VERSION_NUM -ge 501 ]; then
-    return 1;
+  if [ -n "$LUA_VER" ]; then
+    if [ "$LUA_VER" -eq $LUA_VERSION_NUM ]; then
+      return 1
+    else
+      return 0
+    fi
   else
-    return 0;
+    if [ $LUA_VERSION_NUM -ge 501 ]; then
+      return 1
+    else
+      return 0
+    fi
   fi
 }
 
@@ -104,50 +129,55 @@ if [ -z "$LUA_DIR" ]; then
       test_lua_version $prefix/include/lua.h
       if [ $? -eq 1 ]; then
         echo "using Lua $LUA_VERSION ($LUA_RELEASE) found at $prefix/include"
-        CFLAGS="$CFLAGS -I$prefix/include"
-        LUA_LDFLAGS="$LUA_LDFLAGS -L$prefix/lib -llua"
-        LUA_DIR=found
+        CFLAGS="$CFLAGS -I'$prefix/include'"
+        LUA_LDFLAGS="$LUA_LDFLAGS -L'$prefix/lib' -llua"
+        LUA=$prefix/lua
+        LUAC=$prefix/luac
         break
       fi
     else
-      for dir in `ls -d $prefix/include/lua* 2> /dev/null`; do
+      for dir in `ls -r -d $prefix/include/lua* 2> /dev/null`; do
         if [ -e $dir/lua.h ]; then
           test_lua_version $dir/lua.h
           if [ $? -eq 1 ]; then
             echo "using Lua $LUA_VERSION ($LUA_RELEASE) found at $dir"
             CFLAGS="$CFLAGS -I$dir"
             if [ -x "$prefix/bin/lua$LUA_VERSION" ]; then
-              LUA_LDFLAGS="$LUA_LDFLAGS -L$prefix/lib -llua$LUA_VERSION"
-              LUA_DIR=found
+              LUA_LDFLAGS="$LUA_LDFLAGS -L'$prefix/lib' -llua$LUA_VERSION"
+              LUA=$prefix/bin/lua$LUA_VERSION
+              LUAC=$prefix/bin/luac$LUA_VERSION
             elif [ -x "$prefix/bin/lua-$LUA_VERSION" ]; then
-              LUA_LDFLAGS="$LUA_LDFLAGS -L$prefix/lib -llua-$LUA_VERSION"
-              LUA_DIR=found
+              LUA_LDFLAGS="$LUA_LDFLAGS -L'$prefix/lib' -llua-$LUA_VERSION"
+              LUA=$prefix/bin/lua-$LUA_VERSION
+              LUAC=$prefix/bin/luac-$LUA_VERSION
             else
-              echo "ERROR: found lua.h at $dir/lua.h but no matching lua library"
+              echo "ERROR: found lua.h at $dir/lua.h but no matching lua and luac"
               return 1
             fi
             break
           fi
         fi
       done
-      if [ -n "$LUA_DIR" ]; then
+      if [ -n "$LUAC" ]; then
         break
       fi
     fi
   done
 
-  if [ -z "$LUA_DIR" ]; then
+  if [ -z "$LUAC" ]; then
     echo "ERROR: no suitable lua found .. please install lua 5.1 or higher or use --with-lua"
     return 1
   fi
 
 else
-  CFLAGS="$CFLAGS -I$LUA_DIR/include"
-  LUA_LDFLAGS="$LUA_LDFLAGS $LUA_DIR/lib/liblua.a"
+  CFLAGS="$CFLAGS -I'$LUA_DIR/include'"
+  LUA_LDFLAGS="$LUA_LDFLAGS '$LUA_DIR/lib/liblua.a'"
+  LUA=$LUA_DIR/bin/lua
+  LUAC=$LUA_DIR/bin/luac
 fi
 
 
-cat >> include.mk <<EOF
+cat > include.mk <<EOF
 # this file was created automatically
 # do not edit this file directly
 # use ./configure instead
@@ -156,6 +186,8 @@ TARGET := $TARGET
 CC := $COMPILER
 CFLAGS := $CFLAGS
 LDFLAGS := $LDFLAGS
+LUA := $LUA
+LUAC := $LUAC
 LUA_LDFLAGS := $LUA_LDFLAGS
 EOF
 
diff --git a/src/l_cmd.c b/src/l_cmd.c
index ffefd2b..374535e 100644
--- a/src/l_cmd.c
+++ b/src/l_cmd.c
@@ -137,16 +137,22 @@ static int l_cmd_send_string(lua_State* L)
   return 1;
 }
 
-static const struct luaL_reg cmd_funcs [] = {
+static const struct luaL_Reg cmd_funcs [] = {
   { "init", l_cmd_init },
   { "recv_data", l_cmd_recv_data },
   { "send_string", l_cmd_send_string },
   { NULL, NULL }
 };
 
-
 LUALIB_API int luaopen_cmd(lua_State *L)
 {
+#if LUA_VERSION_NUM > 501
+  lua_newtable(L);
+  luaL_setfuncs(L, cmd_funcs, 0);
+  lua_pushvalue(L, -1);
+  lua_setglobal(L, LUA_CMDLIBNAME);
+#else
   luaL_register(L, LUA_CMDLIBNAME, cmd_funcs);
+#endif
   return 1;
 }
diff --git a/src/l_log.c b/src/l_log.c
index 8da64bb..a405909 100644
--- a/src/l_log.c
+++ b/src/l_log.c
@@ -79,7 +79,7 @@ static int l_log_printf(lua_State *L)
   return 0;
 }
 
-static const struct luaL_reg log_funcs [] = {
+static const struct luaL_Reg log_funcs [] = {
   { "init", l_log_init },
   { "close", l_log_close },
   { "add_target", l_log_add_target },
@@ -90,7 +90,14 @@ static const struct luaL_reg log_funcs [] = {
 
 LUALIB_API int luaopen_log(lua_State *L)
 {
+#if LUA_VERSION_NUM > 501
+  lua_newtable(L);
+  luaL_setfuncs(L, log_funcs, 0);
+  lua_pushvalue(L, -1);
+  lua_setglobal(L, LUA_LOGLIBNAME);
+#else
   luaL_register(L, LUA_LOGLIBNAME, log_funcs);
+#endif
   lua_pushliteral(L, "ERROR");
   lua_pushinteger(L, ERROR);
   lua_settable(L, -3);
diff --git a/src/l_sig_handler.c b/src/l_sig_handler.c
index 82902ca..f0616b8 100644
--- a/src/l_sig_handler.c
+++ b/src/l_sig_handler.c
@@ -74,7 +74,7 @@ static int l_signal_handle(lua_State *L)
   return 1;
 }
 
-static const struct luaL_reg signal_funcs [] = {
+static const struct luaL_Reg signal_funcs [] = {
   { "init", l_signal_init },
   { "stop", l_signal_stop },
   { "handle", l_signal_handle },
@@ -84,6 +84,13 @@ static const struct luaL_reg signal_funcs [] = {
 
 LUALIB_API int luaopen_signal(lua_State *L)
 {
+#if LUA_VERSION_NUM > 501
+  lua_newtable(L);
+  luaL_setfuncs(L, signal_funcs, 0);
+  lua_pushvalue(L, -1);
+  lua_setglobal(L, LUA_SIGNALLIBNAME);
+#else
   luaL_register(L, LUA_SIGNALLIBNAME, signal_funcs);
+#endif
   return 1;
 }
-- 
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