CMakeLists.txt

# preamble
project( Lsyncd )
cmake_minimum_required( VERSION 2.8 )
set( LSYNCD_VERSION 2.1.5 )
set( CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_SOURCE_DIR}/cmake/" )


# finding Lua
find_package(Lua REQUIRED)
include_directories ( ${LUA_INCLUDE_DIR} )


# setting Lsyncd sources
set( LSYNCD_SRC lsyncd.c runner.c defaults.c )


# selecting the file notification mechanisms to compile against
option( WITH_INOTIFY "Compile with inotify file notifications (Linux)" ON )
option( WITH_FSEVENTS "Compile with inotify file notifications (OSX)" OFF )

if( WITH_INOTIFY )
	set( LSYNCD_SRC ${LSYNCD_SRC} inotify.c )
endif( WITH_INOTIFY )

if( WITH_FSEVENTS )
	set( LSYNCD_SRC ${LSYNCD_SRC} fsevents.c )

	option( XNU_DIR "Path to the xnu sources" )

#	if( NOT XNU_DIR/bsd/sys/fsevents.h )
#		message( SEND_ERROR "Cannot find bsd/sys/fsevents.h in XNU_DIR" )
#	endif( )

	include_directories( ${XNU_DIR} )
endif( WITH_FSEVENTS )


# generating the config.h file
configure_file (
	"${PROJECT_SOURCE_DIR}/config.h.in"
	"${PROJECT_BINARY_DIR}/config.h"
)
include_directories("${PROJECT_BINARY_DIR}")


# building and compiling the part of lsyncd written in Lua
# also called "runner"
add_custom_command( OUTPUT runner.c 
    COMMAND ${CMAKE_COMMAND} -E echo "Generating built-in runner linkable" 
	COMMAND ${LUA_EXECUTABLE} ${PROJECT_SOURCE_DIR}/bin2carray.lua runner.out runner runner.c
    DEPENDS runner.out 
) 

# this supposes the Lua compiler 'luac' is sitting right next to the Lua interpreter 'lua'
add_custom_command( OUTPUT runner.out
    COMMAND ${CMAKE_COMMAND} -E echo "Compiling built-in runner" 
	COMMAND ${LUA_EXECUTABLE}c -o runner.out ${PROJECT_SOURCE_DIR}/lsyncd.lua
    DEPENDS ${PROJECT_SOURCE_DIR}/lsyncd.lua
) 

# building and compiling the built-in default configs:
#   rsync rysnc-ssh and direct
add_custom_command( OUTPUT defaults.c 
    COMMAND ${CMAKE_COMMAND} -E echo "Generating built-in default configs" 
	COMMAND ${LUA_EXECUTABLE} ${PROJECT_SOURCE_DIR}/bin2carray.lua defaults.out defaults defaults.c
    DEPENDS defaults.out 
) 

set( DEFAULT_CONFIGS
	${PROJECT_SOURCE_DIR}/default.lua
	${PROJECT_SOURCE_DIR}/default-rsync.lua
	${PROJECT_SOURCE_DIR}/default-rsyncssh.lua
	${PROJECT_SOURCE_DIR}/default-direct.lua
)

add_custom_command( OUTPUT defaults.out
    COMMAND ${CMAKE_COMMAND} -E echo "Compiling built-in default configs"
	COMMAND ${LUA_EXECUTABLE}c -o defaults.out ${DEFAULT_CONFIGS}
    DEPENDS ${DEFAULT_CONFIGS}
) 

# the manpage
add_custom_command( OUTPUT doc/lsyncd.1
    COMMAND ${CMAKE_COMMAND} -E echo "Updating the manpage"
	COMMAND a2x --format=manpage doc/lsyncd.1.txt
    DEPENDS doc/lsyncd.1.txt
)
add_custom_target( manpage ALL DEPENDS doc/lsyncd.1 )

# compiling and linking it all together
add_executable( lsyncd ${LSYNCD_SRC} )
target_link_libraries( lsyncd ${LUA_LIBRARIES} )

install( TARGETS lsyncd RUNTIME DESTINATION bin )
install( FILES doc/lsyncd.1 DESTINATION man)