From 99bf8ff0ed62bebb7e5c2e77308724ffda7aa0c6 Mon Sep 17 00:00:00 2001
From: Krisztian Litkey <kli@iki.fi>
Date: Sun, 9 Mar 2014 18:21:47 +0200
Subject: [PATCH] lua-5.2: build-sys: allow building against a specified Lua
 version.

---
 configure.ac    | 22 ++++++++++++++++------
 src/Makefile.am |  2 ++
 2 files changed, 18 insertions(+), 6 deletions(-)

diff --git a/configure.ac b/configure.ac
index 15e9cbc..9cd0085 100644
--- a/configure.ac
+++ b/configure.ac
@@ -46,6 +46,9 @@ AC_PROG_YACC
 AM_PROG_LEX
 AC_SUBST(LEXLIB)
 
+# Make first invocation of PKG_CHECK_MODULES 'if-then-else-fi'-safe.
+PKG_PROG_PKG_CONFIG
+
 # Don't require ctags (we keep linker scripts and debug files in the repo now).
 #AC_CHECK_PROG(CTAGS, ctags, "ctags")
 #if test "$CTAGS" != "ctags" ; then
@@ -109,13 +112,17 @@ fi
 
 AC_SUBST(WARNING_CFLAGS)
 
-# check for Lua
-PKG_CHECK_MODULES(LUA, lua >= 5.1.1, [try_lua51=no], [try_lua51=yes])
+# By default use the system default Lua (assumed to be called lua(.pc).
+# You can override this using the --with-lua option. For instance
+# on Ubuntu you'd need to use --with-lua=lua5.1.
+AC_ARG_WITH(lua,
+            [  --with-lua                build with specified Lua (pkgconfig filename without .pc suffix)],
+	    [with_lua=$withval], [with_lua=lua])
+
+# Check for Lua.
+AC_MSG_NOTICE([Compiling with Lua package $with_lua.])
+PKG_CHECK_MODULES(LUA, $with_lua >= 5.1.1)
 
-# At least Ubuntu packages lua 5.1 as lua5.1... try that if needed.
-if test "$try_lua51" = "yes"; then
-    PKG_CHECK_MODULES(LUA, lua5.1 >= 5.1.1)
-fi
 AC_SUBST(LUA_CFLAGS)
 AC_SUBST(LUA_LIBS)
 
@@ -622,6 +629,9 @@ AC_OUTPUT
 # Display the configuration.
 echo "----- configuration -----"
 echo "Extra C warnings flags: $WARNING_CFLAGS"
+echo "Lua (pkgconfig file) to use: $with_lua"
+echo "    * cflags: $LUA_CFLAGS"
+echo "    * libs: $LUA_LIBS"
 echo "D-Bus (libdbus) support: $enable_libdbus"
 echo "D-Bus (systemd-bus) support: $enable_sdbus"
 echo "PulseAudio mainloop support: $enable_pulse"
diff --git a/src/Makefile.am b/src/Makefile.am
index 8c6f684..3db6e44 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -157,6 +157,7 @@ libmurphy_lua_utils_ladir =					\
 		$(includedir)/murphy/core/lua-utils
 
 libmurphy_lua_utils_la_HEADERS =				\
+		core/lua-utils/lua-utils.h			\
 		core/lua-utils/strarray.h			\
 		core/lua-utils/funcbridge.h			\
 		core/lua-utils/object.h				\
@@ -164,6 +165,7 @@ libmurphy_lua_utils_la_HEADERS =				\
 		core/lua-utils/include.h
 
 libmurphy_lua_utils_la_REGULAR_SOURCES =			\
+		core/lua-utils/lua-utils.c			\
 		core/lua-utils/strarray.c			\
 		core/lua-utils/funcbridge.c			\
 		core/lua-utils/object.c				\
-- 
2.7.4