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      1 #
      2 # Copyright (C) 2017 Ali Abdulkadir <autostart.ini (at] gmail.com>.
      3 #
      4 # Permission is hereby granted, free of charge, to any person
      5 # obtaining a copy of this software and associated documentation files
      6 # (the "Software"), to deal in the Software without restriction,
      7 # including without limitation the rights to use, copy, modify, merge,
      8 # publish, distribute, sub-license, and/or sell copies of the Software,
      9 # and to permit persons to whom the Software is furnished to do so,
     10 # subject to the following conditions:
     11 #
     12 # The above copyright notice and this permission notice shall be
     13 # included in all copies or substantial portions of the Software.
     14 #
     15 # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
     16 # EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
     17 # MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
     18 # NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
     19 # BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
     20 # ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
     21 # CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
     22 # SOFTWARE.
     23 #
     24 # FindPacket
     25 # ==========
     26 #
     27 # Find the Packet library and include files.
     28 #
     29 # This module defines the following variables:
     30 #
     31 # Packet_INCLUDE_DIR     - absolute path to the directory containing Packet32.h.
     32 #
     33 # Packet_LIBRARY         - relative or absolute path to the Packet library to
     34 #                          link with. An absolute path is will be used if the
     35 #                          Packet library is not located in the compiler's
     36 #                          default search path.
     37 
     38 # Packet_FOUND           - TRUE if the Packet library *and* header are found.
     39 #
     40 # Hints and Backward Compatibility
     41 # ================================
     42 #
     43 # To tell this module where to look, a user may set the environment variable
     44 # Packet_ROOT to point cmake to the *root* of a directory with include and
     45 # lib subdirectories for packet.dll (e.g WpdPack or npcap-sdk).
     46 # Alternatively, Packet_ROOT may also be set from cmake command line or GUI
     47 # (e.g cmake -DPacket_ROOT=C:\path\to\packet [...])
     48 #
     49 
     50 # The 64-bit Packet.lib is located under /x64
     51 if(CMAKE_SIZEOF_VOID_P EQUAL 8)
     52   #
     53   # For the WinPcap and Npcap SDKs, the Lib subdirectory of the top-level
     54   # directory contains 32-bit libraries; the 64-bit libraries are in the
     55   # Lib/x64 directory.
     56   #
     57   # The only way to *FORCE* CMake to look in the Lib/x64 directory
     58   # without searching in the Lib directory first appears to be to set
     59   # CMAKE_LIBRARY_ARCHITECTURE to "x64".
     60   #
     61   # In newer versions of CMake, CMAKE_LIBRARY_ARCHITECTURE is set according to
     62   # the language, e.g., CMAKE_<LANG>_LIBRARY_ARCHITECTURE. So, set the new
     63   # variable, CMAKE_C_LIBRARY_ARCHITECTURE, so that CMAKE_LIBRARY_ARCHITECTURE
     64   # inherits the correct value.
     65   #
     66   set(archdetect_c_code "
     67   #ifndef _M_ARM64
     68   #error Not ARM64
     69   #endif
     70   int main() { return 0; }
     71   ")
     72 
     73   file(WRITE "${CMAKE_BINARY_DIR}/archdetect.c" "${archdetect_c_code}")
     74   try_compile(
     75 	  IsArm64
     76 	  "${CMAKE_BINARY_DIR}/archdetect"
     77 	  "${CMAKE_BINARY_DIR}/archdetect.c"
     78 	  )
     79   if(IsArm64)
     80 	  set(CMAKE_C_LIBRARY_ARCHITECTURE "ARM64")
     81 	  set(CMAKE_LIBRARY_ARCHITECTURE "ARM64")
     82   else()
     83 	  set(CMAKE_C_LIBRARY_ARCHITECTURE "x64")
     84 	  set(CMAKE_LIBRARY_ARCHITECTURE "x64")
     85   endif()
     86 endif()
     87 
     88 # Find the header
     89 find_path(Packet_INCLUDE_DIR Packet32.h
     90   PATH_SUFFIXES include Include
     91 )
     92 
     93 # Find the library
     94 find_library(Packet_LIBRARY
     95   NAMES Packet packet
     96 )
     97 
     98 # Set Packet_FOUND to TRUE if Packet_INCLUDE_DIR and Packet_LIBRARY are TRUE.
     99 include(FindPackageHandleStandardArgs)
    100 find_package_handle_standard_args(Packet
    101   DEFAULT_MSG
    102   Packet_INCLUDE_DIR
    103   Packet_LIBRARY
    104 )
    105 
    106 mark_as_advanced(Packet_INCLUDE_DIR Packet_LIBRARY)
    107 
    108 set(Packet_INCLUDE_DIRS ${Packet_INCLUDE_DIR})
    109 set(Packet_LIBRARIES ${Packet_LIBRARY})
    110