# Copyright (c) 2012-2014 Konstantin Isakov <ikm@zbackup.org> and ZBackup contributors, see CONTRIBUTORS
# Part of ZBackup. Licensed under GNU GPLv2 or later + OpenSSL, see LICENSE

cmake_minimum_required( VERSION 2.8.2 )
project( zbackup )

list( APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/cmake" )

if( NOT CMAKE_BUILD_TYPE )
  set( CMAKE_BUILD_TYPE Release )
endif( NOT CMAKE_BUILD_TYPE )

find_package( ZLIB REQUIRED )
include_directories( ${ZLIB_INCLUDE_DIRS} )

find_package( OpenSSL REQUIRED )
include_directories( ${OPENSSL_INCLUDE_DIR} )

find_package( Protobuf REQUIRED )
include_directories( ${PROTOBUF_INCLUDE_DIRS} )
include_directories( ${CMAKE_CURRENT_BINARY_DIR} )

find_program( PROTOBUF_PROTOC_CHECK NAMES protoc DOC "Protobuf compiler binary" )

IF( ${PROTOBUF_PROTOC_CHECK} STREQUAL "PROTOBUF_PROTOC_CHECK-NOTFOUND" )
  MESSAGE( FATAL_ERROR "Could not find protobuf compiler. Make sure protobuf-compiler package is installed." )
ENDIF( ${PROTOBUF_PROTOC_CHECK} STREQUAL "PROTOBUF_PROTOC_CHECK-NOTFOUND" )

PROTOBUF_GENERATE_CPP( protoSrcs protoHdrs zbackup.proto )

find_package( Threads REQUIRED )

find_package( LibLZMA REQUIRED )
include_directories( ${LIBLZMA_INCLUDE_DIRS} )

find_package( LibLZO COMPONENTS LIBLZO_HAS_LZO1X_DECOMPRESS_SAFE LIBLZO_HAS_LZO1X_1_COMPRESS )
if ( LIBLZO_FOUND )
  ADD_DEFINITIONS( -DHAVE_LIBLZO )
  include_directories( ${LIBLZO_INCLUDE_DIRS} )
else ( LIBLZO_FOUND )
  set( LIBLZO_LIBRARIES )
endif( LIBLZO_FOUND )

find_package( LibUnwind COMPONENTS LIBUNWIND_HAS_UNW_GETCONTEXT LIBUNWIND_HAS_INIT_LOCAL )
if ( LIBUNWIND_FOUND )
  ADD_DEFINITIONS( -DHAVE_LIBUNWIND )
  include_directories( ${LIBUNWIND_INCLUDE_DIRS} )
else ( LIBUNWIND_FOUND )
  set( LIBUNWIND_LIBRARIES )
endif( LIBUNWIND_FOUND )

add_custom_target( invalidate_files ALL
  COMMAND ${CMAKE_COMMAND} -E touch "${CMAKE_CURRENT_SOURCE_DIR}/CMakeLists.txt" )
execute_process( OUTPUT_VARIABLE ZBACKUP_VERSION
  COMMAND git describe --tags --always
  OUTPUT_STRIP_TRAILING_WHITESPACE )
if ( ZBACKUP_VERSION )
  ADD_DEFINITIONS( -DZBACKUP_VERSION="${ZBACKUP_VERSION}" )
endif( ZBACKUP_VERSION )

file( GLOB sourceFiles "*.cc" )
add_executable( zbackup ${sourceFiles} ${protoSrcs} ${protoHdrs} )

target_link_libraries( zbackup
  ${PROTOBUF_LIBRARIES}
  ${OPENSSL_LIBRARIES}
  ${CMAKE_THREAD_LIBS_INIT}
  ${ZLIB_LIBRARIES}
  ${LIBLZMA_LIBRARIES}
  ${LIBLZO_LIBRARIES}
  ${LIBUNWIND_LIBRARIES}
)

install( TARGETS zbackup DESTINATION bin )