xref: /freebsd/contrib/libpcap/cmake/Modules/FindPacket.cmake (revision 0d66206fff44f864ea8a4b220c3a53b4caa959a0)
1#
2# Copyright (C) 2017 Ali Abdulkadir <autostart.ini@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
51if(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()
86endif()
87
88# Find the header
89find_path(Packet_INCLUDE_DIR Packet32.h
90  PATH_SUFFIXES include Include
91)
92
93# Find the library
94find_library(Packet_LIBRARY
95  NAMES Packet packet
96)
97
98# Set Packet_FOUND to TRUE if Packet_INCLUDE_DIR and Packet_LIBRARY are TRUE.
99include(FindPackageHandleStandardArgs)
100find_package_handle_standard_args(Packet
101  DEFAULT_MSG
102  Packet_INCLUDE_DIR
103  Packet_LIBRARY
104)
105
106mark_as_advanced(Packet_INCLUDE_DIR Packet_LIBRARY)
107
108set(Packet_INCLUDE_DIRS ${Packet_INCLUDE_DIR})
109set(Packet_LIBRARIES ${Packet_LIBRARY})
110