cmake/modules/FindSNAPPY.cmake

   1 #
   2 # - Find snappy
   3 # Find Snappy includes and library
   4 #
   5 #  SNAPPY_INCLUDE_DIRS - where to find snappy.h, etc.
   6 #  SNAPPY_LIBRARIES    - List of libraries when using Snappy.
   7 #  SNAPPY_FOUND        - True if Snappy found.
   8 #  SNAPPY_DLL_DIR      - (Windows) Path to the Snappy DLL
   9 #  SNAPPY_DLL          - (Windows) Name of the Snappy DLL
  10
  11 include( FindWSWinLibs )
  12 FindWSWinLibs( "snappy-.*" "SNAPPY_HINTS" )
  13
  14 if( NOT USE_REPOSITORY)
  15   find_package(PkgConfig QUIET)
  16   pkg_search_module(SNAPPY QUIET libsnappy)
  17 endif()
  18
  19 find_path(SNAPPY_INCLUDE_DIR
  20   NAMES snappy.h
  21   HINTS "${SNAPPY_INCLUDEDIR}" "${SNAPPY_HINTS}/include"
  22   /usr/include
  23   /usr/local/include
  24 )
  25
  26 find_library(SNAPPY_LIBRARY
  27   NAMES snappy
  28   HINTS "${SNAPPY_LIBDIR}" "${SNAPPY_HINTS}/lib"
  29   PATHS
  30   /usr/lib
  31   /usr/local/lib
  32 )
  33
  34 include(FindPackageHandleStandardArgs)
  35 find_package_handle_standard_args( SNAPPY DEFAULT_MSG SNAPPY_LIBRARY SNAPPY_INCLUDE_DIR )
  36
  37 if( SNAPPY_FOUND )
  38   set( SNAPPY_INCLUDE_DIRS ${SNAPPY_INCLUDE_DIR} )
  39   set( SNAPPY_LIBRARIES ${SNAPPY_LIBRARY} )
  40     set(_snappy_version_header "${SNAPPY_INCLUDE_DIR}/snappy-stubs-public.h")
  41
  42     file(STRINGS "${_snappy_version_header}" SNAPPY_VERSION_MAJOR
  43     REGEX "#define[ ]+SNAPPY_MAJOR[ ]+[0-9]+")
  44     # Older versions of snappy like snappy-0.2 have SNAPPY_VERSION but not SNAPPY_VERSION_MAJOR
  45     if(SNAPPY_VERSION_MAJOR)
  46     string(REGEX MATCH "[0-9]+" SNAPPY_VERSION_MAJOR ${SNAPPY_VERSION_MAJOR})
  47     file(STRINGS "${_snappy_version_header}" SNAPPY_VERSION_MINOR
  48     REGEX "#define[ ]+SNAPPY_MINOR[ ]+[0-9]+")
  49     string(REGEX MATCH "[0-9]+" SNAPPY_VERSION_MINOR ${SNAPPY_VERSION_MINOR})
  50     file(STRINGS "${_snappy_version_header}" SNAPPY_VERSION_PATCH
  51     REGEX "#define[ ]+SNAPPY_PATCHLEVEL[ ]+[0-9]+")
  52     string(REGEX MATCH "[0-9]+" SNAPPY_VERSION_PATCH ${SNAPPY_VERSION_PATCH})
  53     set(SNAPPY_VERSION ${SNAPPY_VERSION_MAJOR}.${SNAPPY_VERSION_MINOR}.${SNAPPY_VERSION_PATCH})
  54     endif()
  55
  56   if (WIN32)
  57     set ( SNAPPY_DLL_DIR "${SNAPPY_HINTS}/bin"
  58       CACHE PATH "Path to Snappy DLL"
  59     )
  60     file( GLOB _snappy_dll RELATIVE "${SNAPPY_DLL_DIR}"
  61       "${SNAPPY_DLL_DIR}/snappy*.dll"
  62     )
  63     set ( SNAPPY_DLL ${_snappy_dll}
  64       # We're storing filenames only. Should we use STRING instead?
  65       CACHE FILEPATH "Snappy DLL file name"
  66     )
  67     mark_as_advanced( SNAPPY_DLL_DIR SNAPPY_DLL )
  68   endif()
  69 else()
  70   set( SNAPPY_INCLUDE_DIRS )
  71   set( SNAPPY_LIBRARIES )
  72 endif()
  73
  74 mark_as_advanced( SNAPPY_LIBRARIES SNAPPY_INCLUDE_DIRS )