Add CMake build support for Lua bindings.

CMakeLists.txt

@@ -28,3 +28,10 @@ add_subdirectory(src)
 add_subdirectory(lua)
 add_subdirectory(doc)
 
+# Install README into share dir (is this even the right spot? need to revisit
+# this at some point)
+install(FILES
+	README
+	DESTINATION share/doc/conky
+)
+

cmake/ConkyBuildOptions.cmake

@@ -72,6 +72,10 @@ if(BUILD_X11)
 endif(BUILD_X11)
 
 option(BUILD_LUA "Build Lua support" true)
+if(BUILD_LUA)
+	option(BUILD_LUA_CAIRO "Build cairo bindings for Lua" false)
+	option(BUILD_LUA_IMLIB2 "Build Imlib2 bindings for Lua" false)
+endif(BUILD_LUA)
 
 option(BUILD_AUDACIOUS "Build audacious (music player) support" false)
 if(BUILD_AUDACIOUS)

cmake/ConkyPlatformChecks.cmake

@@ -149,6 +149,18 @@ if(BUILD_LUA)
 	pkg_search_module(LUA REQUIRED lua>=5.1 lua-5.1>=5.1 lua5.1>=5.1)
 	set(conky_libs ${conky_libs} ${LUA_LIBRARIES})
 	set(conky_includes ${conky_includes} ${LUA_INCLUDE_DIRS})
+	if(BUILD_LUA_CAIRO)
+		set(WANT_TOLUA true)
+		pkg_check_modules(CAIRO REQUIRED cairo cairo-xlib)
+		set(luacairo_libs ${CAIRO_LIBRARIES} ${LUA_LIBRARIES})
+		set(luacairo_includes ${CAIRO_INCLUDE_DIRS} ${LUA_INCLUDE_DIRS})
+	endif(BUILD_LUA_CAIRO)
+	if(BUILD_LUA_IMLIB2)
+		set(WANT_TOLUA true)
+		pkg_check_modules(IMLIB2 imlib2)
+		set(luaimlib2_libs ${IMLIB2_LIB} ${LUA_LIBRARIES})
+		set(luaimlib2_includes ${IMLIB2_INCLUDE_PATH} ${LUA_INCLUDE_DIRS})
+	endif(BUILD_LUA_IMLIB2)
 endif(BUILD_LUA)
 
 if(BUILD_AUDACIOUS)
@@ -244,3 +256,17 @@ if(WANT_LIBXML2)
 	set(conky_includes ${conky_includes} ${LIBXML2_INCLUDE_DIRS})
 endif(WANT_LIBXML2)
 
+if(WANT_TOLUA)
+	find_program(APP_TOLUA tolua++)
+	if(NOT APP_TOLUA)
+		message(FATAL_ERROR "Unable to find program 'tolua++'")
+	endif(NOT APP_TOLUA)
+	find_library(TOLUA_LIBS NAMES tolua++ tolua++5.1)
+	find_path(TOLUA_INCLUDE_PATH tolua++.h ${INCLUDE_SEARCH_PATH})
+	if(TOLUA_INCLUDE_PATH AND TOLUA_LIBS)
+		set(TOLUA_FOUND true)
+	else(TOLUA_INCLUDE_PATH AND TOLUA_LIBS)
+		message(FATAL_ERROR "Unable to find tolua++ library")
+	endif(TOLUA_INCLUDE_PATH AND TOLUA_LIBS)
+endif(WANT_TOLUA)
+

cmake/ToLua.cmake

@@ -0,0 +1,24 @@
+function(wrap_tolua VAR)
+if(NOT ARGN)
+	message(SEND_ERROR "Error: wrap_tolua called without any files")
+	return()
+endif(NOT ARGN)
+
+SET(INCL)
+SET(${VAR})
+FOREACH(FIL ${ARGN})
+	GET_FILENAME_COMPONENT(ABS_FIL ${FIL} ABSOLUTE)
+	GET_FILENAME_COMPONENT(FIL_WE ${FIL} NAME_WE)
+	LIST(APPEND ${VAR} "${CMAKE_CURRENT_BINARY_DIR}/lib${FIL_WE}.c")
+
+	ADD_CUSTOM_COMMAND( OUTPUT ${${VAR}} ${INCL} COMMAND ${APP_TOLUA} -n
+		${FIL_WE} -o ${CMAKE_CURRENT_BINARY_DIR}/lib${FIL_WE}.c ${ABS_FIL} DEPENDS
+		${ABS_FIL} COMMENT "Running tolua++ on ${FIL}"
+		VERBATIM )
+
+	SET_SOURCE_FILES_PROPERTIES(${${VAR}} ${INCL} PROPERTIES GENERATED TRUE)
+ENDFOREACH(FIL)
+
+SET(${VAR} ${${VAR}} PARENT_SCOPE)
+
+endfunction(wrap_tolua)

lua/CMakeLists.txt

@@ -0,0 +1,27 @@
+include(ToLua)
+
+if(BUILD_LUA_CAIRO)
+	include_directories(${luacairo_includes} ${CMAKE_CURRENT_SOURCE_DIR})
+	wrap_tolua(luacairo_src cairo.pkg)
+
+	add_library(cairo SHARED ${luacairo_src})
+
+	target_link_libraries(cairo ${luacairo_libs} ${TOLUA_LIBS})
+	set(lua_libs ${lua_libs} cairo)
+endif(BUILD_LUA_CAIRO)
+
+if(BUILD_LUA_IMLIB2)
+	include_directories(${luaimlib2_includes} ${CMAKE_CURRENT_SOURCE_DIR})
+	wrap_tolua(luaimlib2_src imlib2.pkg)
+
+	add_library(imlib2 SHARED ${luaimlib2_src})
+
+	target_link_libraries(imlib2 ${luaimlib2_libs} ${TOLUA_LIBS})
+	set(lua_libs ${lua_libs} imlib2)
+endif(BUILD_LUA_IMLIB2)
+
+install(TARGETS
+	${lua_libs}
+	LIBRARY DESTINATION lib/conky
+	ARCHIVE DESTINATION lib/conky
+)

lua/cairo.pkg

@@ -3,7 +3,7 @@ $#include <cairo-deprecated.h>
 $#include <cairo.h>
 $#include <cairo-xlib.h>
 $#include <X11/Xlib.h>
-$#include "libcairo-helper.h"
+$#include <libcairo-helper.h>
 /*
  * This code was mostly copied from cairo.h and cairo-xlib.h with comments
  * removed.  The licence noticed below is present for the sake of clarity.

src/CMakeLists.txt

@@ -143,3 +143,11 @@ endif(BUILD_CONFIG_OUTPUT)
 add_executable(conky ${conky_sources} ${optional_sources})
 
 target_link_libraries(conky ${conky_libs})
+
+# Install libtcp-portmon too?
+install(TARGETS
+	conky
+	RUNTIME DESTINATION bin
+	LIBRARY DESTINATION lib
+	ARCHIVE DESTINATION lib
+)