if(UNIX)
set(CMAKE_CXX_FLAGS "-Wall")
endif(UNIX)

find_program(LEX flex)

if(LEX STREQUAL "LEX-NOTFOUND")
    message(FATAL_ERROR "flex is not installed!")
endif(LEX STREQUAL "LEX-NOTFOUND")

# cmake macro for lex
MACRO(LEX_FILE _filename)
    GET_FILENAME_COMPONENT(_basename ${_filename} NAME_WE)
    ADD_CUSTOM_COMMAND(
	OUTPUT  ${CMAKE_CURRENT_BINARY_DIR}/${_basename}.cpp
	COMMAND ${LEX} -o ${_basename}.cpp
	${CMAKE_CURRENT_SOURCE_DIR}/${_filename} DEPENDS ${_filename} )
ENDMACRO(LEX_FILE)

LEX_FILE(graph.l)

add_executable(tonemap tonemap.cpp graphloader.cpp graph.cpp)

target_link_libraries(tonemap stm)
target_link_libraries(tonemap pthread)
target_link_libraries(tonemap m)

INSTALL_TARGETS(${INSTALL_DIST_PATH} tonemap)