lbase64: build as generic-package instead of luarocks

The author of lbase64 maintains 3 separate versions of the package for
the 3 Lua versions. Only the 5.1 version is uploaded to luarocks, so
that is the one we currently support in Buildroot.

However, the three versions are nearly identical. With a small patch,
this allows us to support all Lua versions from a single tarball.

Signed-off-by: Francois Perrad <francois.perrad@gadz.org>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>

package/lbase64/0001-retro-compatible-with-Lua-5.1.patch

@@ -0,0 +1,20 @@
+retro compatible with Lua 5.1 C/API
+
+Signed-off-by: Francois Perrad <francois.perrad@gadz.org>
+
+Index: b/lbase64.c
+===================================================================
+--- a/lbase64.c
++++ b/lbase64.c
+@@ -111,7 +111,11 @@
+ 
+ LUALIB_API int luaopen_base64(lua_State *L)
+ {
++#if LUA_VERSION_NUM >= 502
+  luaL_newlib(L,R);
++#else
++ luaL_register(L,MYNAME,R);
++#endif
+  lua_pushliteral(L,"version");			/** version */
+  lua_pushliteral(L,MYVERSION);
+  lua_settable(L,-3);

package/lbase64/Config.in

@@ -1,12 +1,7 @@
 config BR2_PACKAGE_LBASE64
 	bool "lbase64"
 	depends on BR2_PACKAGE_HAS_LUAINTERPRETER
-	depends on BR2_PACKAGE_LUA_5_1 || BR2_PACKAGE_LUAJIT
 	help
 	  A base64 library for Lua
 
-	  http://luaforge.net/projects/lbase64/
-
-comment "lbase64 needs a Lua 5.1 interpreter"
-	depends on !BR2_PACKAGE_LUA_5_1
-	depends on !BR2_PACKAGE_LUAJIT
+	  http://webserver2.tecgraf.puc-rio.br/~lhf/ftp/lua/#lbase64

package/lbase64/lbase64.hash

@@ -1,2 +1,2 @@
 # Locally calculated
-sha256	7326658d48a70382b496eb88220b0c398c19ed712e39863939330fec0533362a  lbase64-20120820-1.src.rock
+sha256 b83dbc87330a322e5222cd891a6e258b533f5b6c46e8f3c18fc0265e4c991aaa  lbase64.tar.gz

package/lbase64/lbase64.mk

@@ -4,9 +4,20 @@
 #
 ################################################################################
 
-LBASE64_VERSION = 20120820-1
-LBASE64_SUBDIR = base64
+LBASE64_VERSION = 20120820
+LBASE64_SITE = http://webserver2.tecgraf.puc-rio.br/~lhf/ftp/lua/5.3
+LBASE64_SOURCE = lbase64.tar.gz
 LBASE64_LICENSE = Public domain
-LBASE64_LICENSE_FILES = $(LBASE64_SUBDIR)/README
+LBASE64_LICENSE_FILES = README
+LBASE64_DEPENDENCIES = luainterpreter
 
-$(eval $(luarocks-package))
+define LBASE64_BUILD_CMDS
+	$(MAKE1) $(TARGET_CONFIGURE_OPTS) -C $(@D) so
+endef
+
+define LBASE64_INSTALL_TARGET_CMDS
+	$(INSTALL) -D -m 0755 $(@D)/base64.so \
+		$(TARGET_DIR)/usr/lib/lua/$(LUAINTERPRETER_ABIVER)/base64.so
+endef
+
+$(eval $(generic-package))