CMakeLists.txt

cmake_minimum_required(VERSION 3.0)
project (tscaling)
include_directories(include)
file(GLOB SOURCES "src/tscaling.cpp")
file(GLOB TEST_SOURCES "src/test.cpp")

OPTION(FORCE_LBFGSPP "force use bundled LBFGSPP instead of system LBFGS")
OPTION(BUILD_TEST "build test app")
OPTION(BUILD_PYTHON "build python bindings using boost")

find_path(LBFGSPP_LIB LBFGS.h HINTS ${CMAKE_SOURCE_DIR}/lbfgspp)
find_library(LBFGS_LIB lbfgs)
find_package (Eigen3)

if (NOT LBFGS_LIB OR FORCE_LBFGSPP OR BUILD_PYTHON)
   set(USE_LBFGSPP ON)
else()
    set(USE_LBFGSPP OFF)
endif()



if (USE_LBFGSPP AND NOT LBFGSPP_LIB)
  message ( FATAL_ERROR "cannot find LBFGSPP neither liblbfgs")
endif()

if (BUILD_TEST)
  add_executable(test_tscaling ${TEST_SOURCES})
endif()

add_library(tscaling SHARED ${SOURCES})

set (CMAKE_CXX_FLAGS "-g -Wall -std=c++11")

if (USE_LBFGSPP)
  add_definitions(-DLBFGSPP)
  include_directories(${LBFGSPP_LIB} ${EIGEN3_INCLUDE_DIR})
else()
   target_link_libraries(tscaling ${LBFGS_LIB}) 
endif()

if (BUILD_TEST)
   target_link_libraries(test_tscaling tscaling)       
endif()

if (BUILD_PYTHON)
  FIND_PACKAGE(Boost COMPONENTS python)
  FIND_PACKAGE(PythonInterp)
  FIND_PACKAGE(PythonLibs REQUIRED)
  INCLUDE_DIRECTORIES(${Boost_INCLUDE_DIRS} ${PYTHON_INCLUDE_DIRS})
  LINK_LIBRARIES(${Boost_LIBRARIES} ${PYTHON_LIBRARIES} tscaling)
  add_subdirectory(python)
endif()