cmake_minimum_required(VERSION 2.6)

project(biboumi)

set(${PROJECT_NAME}_VERSION_MAJOR 1)
set(${PROJECT_NAME}_VERSION_MINOR 0)
set(${PROJECT_NAME}_VERSION_SUFFIX "")

set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++1y -pedantic -Wall -Wextra")

# Define a __FILENAME__ macro to get the filename of each file, instead of
# the full path as in __FILE__
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -D__FILENAME__='\"$(subst ${CMAKE_SOURCE_DIR}/,,$(abspath $<))\"'")

#
## Look for external libraries
#
set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_SOURCE_DIR}/cmake/Modules/")
include(FindEXPAT)
find_package(EXPAT REQUIRED)
find_package(Iconv REQUIRED)
find_package(Libuuid REQUIRED)
find_package(Libidn)
find_package(SystemdDaemon)
find_package(Botan)

#
## Get the software version
#
set(ARCHIVE_NAME ${CMAKE_PROJECT_NAME}-${${PROJECT_NAME}_VERSION_MAJOR}.${${PROJECT_NAME}_VERSION_MINOR})
if(${PROJECT_NAME}_VERSION_SUFFIX MATCHES ".+")
  set(ARCHIVE_NAME ${ARCHIVE_NAME}-${${PROJECT_NAME}_VERSION_SUFFIX})
endif()

if(${PROJECT_NAME}_VERSION_SUFFIX MATCHES "^~dev$")
  # If we are on a dev version, append the hash of the current git HEAD to
  # the version
  include(FindGit)
  if(GIT_FOUND AND EXISTS "${CMAKE_SOURCE_DIR}/.git")
    execute_process(COMMAND git --git-dir=${CMAKE_SOURCE_DIR}/.git rev-parse --short HEAD
      OUTPUT_VARIABLE GIT_REVISION
      OUTPUT_STRIP_TRAILING_WHITESPACE)
    if(GIT_REVISION)
      set(${PROJECT_NAME}_VERSION_SUFFIX "${${PROJECT_NAME}_VERSION_SUFFIX} (${GIT_REVISION})")
      set(ARCHIVE_NAME ${ARCHIVE_NAME}-${GIT_REVISION})
    endif()
  endif()
endif()

set(BIBOUMI_VERSION
  ${${PROJECT_NAME}_VERSION_MAJOR}.${${PROJECT_NAME}_VERSION_MINOR}${${PROJECT_NAME}_VERSION_SUFFIX})

# To be able to include the config.h file generated by cmake
include_directories("${CMAKE_CURRENT_BINARY_DIR}/src/")
include_directories("${CMAKE_CURRENT_SOURCE_DIR}/src/")
include_directories(${EXPAT_INCLUDE_DIRS})
include_directories(${ICONV_INCLUDE_DIRS})
include_directories(${LIBUUID_INCLUDE_DIRS})

if(LIBIDN_FOUND)
  include_directories(${LIBIDN_INCLUDE_DIRS})
endif()

if(SYSTEMDDAEMON_FOUND)
  include_directories(${SYSTEMDDAEMON_INCLUDE_DIRS})
endif()

if(BOTAN_FOUND)
  include_directories(SYSTEM ${BOTAN_INCLUDE_DIRS})
endif()

set(POLLER_DOCSTRING "Choose the poller between POLL and EPOLL (Linux-only)")
if(${CMAKE_SYSTEM_NAME} MATCHES "Linux")
 set(POLLER "EPOLL" CACHE STRING ${POLLER_DOCSTRING})
else()
 set(POLLER "POLL" CACHE STRING ${POLLER_DOCSTRING})
endif()
if((NOT ${POLLER} MATCHES "POLL") AND
    (NOT ${POLLER} MATCHES "EPOLL"))
  message(FATAL_ERROR "POLLER must be either POLL or EPOLL")
endif()

#
## Documentation
#
set(MAN_PAGE ${CMAKE_CURRENT_BINARY_DIR}/doc/${PROJECT_NAME}.1)
set(DOC_PAGE ${CMAKE_CURRENT_SOURCE_DIR}/doc/${PROJECT_NAME}.1.md)
find_program(RONN_EXECUTABLE NAMES ronn
  DOC "The ronn software, to build the man page from the markdown documentation")
if(RONN_EXECUTABLE)
  set(WITH_DOC true)
  file(MAKE_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/doc/)
  add_custom_command(OUTPUT ${MAN_PAGE}
    COMMAND ${RONN_EXECUTABLE} --roff < ${DOC_PAGE} > ${MAN_PAGE}
    DEPENDS ${DOC_PAGE})
  add_custom_target(doc DEPENDS ${MAN_PAGE})
endif()

#
## utils
#
file(GLOB source_utils
  src/utils/*.[hc]pp)
add_library(utils STATIC ${source_utils})
target_link_libraries(utils ${ICONV_LIBRARIES})

#
## config
#
file(GLOB source_config
  src/config/*.[hc]pp)
add_library(config STATIC ${source_config})
target_link_libraries(config utils)

#
## logger
#
file(GLOB source_logger
  src/logger/*.[hc]pp)
add_library(logger STATIC ${source_logger})
target_link_libraries(logger config)

#
## network
#
file(GLOB source_network
  src/network/*.[hc]pp)
add_library(network STATIC ${source_network})
target_link_libraries(network logger)
if(BOTAN_FOUND)
  target_link_libraries(network ${BOTAN_LIBRARIES})
endif()

#
## irclib
#
file(GLOB source_irc
  src/irc/*.[hc]pp)
add_library(irc STATIC ${source_irc})
target_link_libraries(irc network utils logger)

#
## xmpplib
#
file(GLOB source_xmpp
  src/xmpp/*.[hc]pp)
add_library(xmpp STATIC ${source_xmpp})
target_link_libraries(xmpp bridge network utils logger
  ${EXPAT_LIBRARIES}
  ${LIBUUID_LIBRARIES})
if(LIBIDN_FOUND)
  target_link_libraries(xmpp ${LIBIDN_LIBRARIES})
endif()

#
## bridge
#
file(GLOB source_bridge
  src/bridge/*.[hc]pp)
add_library(bridge STATIC ${source_bridge})
target_link_libraries(bridge xmpp irc utils logger)

#
## Main executable
#
add_executable(${PROJECT_NAME} src/main.cpp)
target_link_libraries(${PROJECT_NAME}
  xmpp
  irc
  bridge
  utils
  config)
if(SYSTEMDDAEMON_FOUND)
  target_link_libraries(xmpp ${SYSTEMDDAEMON_LIBRARIES})
endif()


#
## Tests
#
add_executable(test_suite EXCLUDE_FROM_ALL
  src/test.cpp)
target_link_libraries(test_suite
  xmpp
  irc
  bridge
  utils
  config
  logger)


configure_file(${CMAKE_CURRENT_SOURCE_DIR}/src/config.h.cmake ${CMAKE_CURRENT_BINARY_DIR}/src/config.h)

#
## Install target
#
install(TARGETS ${PROJECT_NAME}
  RUNTIME DESTINATION bin)
if(WITH_DOC)
  install(FILES ${MAN_PAGE} DESTINATION share/man/man1 OPTIONAL)
endif()

#
## Dist target
## Generate a release tarball from the git sources
#
add_custom_target(dist
  COMMAND git archive --prefix=${ARCHIVE_NAME}/ --format=tar HEAD
  | xz > ${CMAKE_CURRENT_BINARY_DIR}/${ARCHIVE_NAME}.tar.xz
  WORKING_DIRECTORY ${CMAKE_SOURCE_DIR})