1# Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
2# file Copyright.txt or https://cmake.org/licensing for details.
3
4#[=======================================================================[.rst:
5UsePkgConfig
6------------
7
8Obsolete pkg-config module for CMake, use FindPkgConfig instead.
9
10
11
12This module defines the following macro:
13
14PKGCONFIG(package includedir libdir linkflags cflags)
15
16Calling PKGCONFIG will fill the desired information into the 4 given
17arguments, e.g.  PKGCONFIG(libart-2.0 LIBART_INCLUDE_DIR
18LIBART_LINK_DIR LIBART_LINK_FLAGS LIBART_CFLAGS) if pkg-config was NOT
19found or the specified software package doesn't exist, the variable
20will be empty when the function returns, otherwise they will contain
21the respective information
22#]=======================================================================]
23
24find_program(PKGCONFIG_EXECUTABLE NAMES pkg-config )
25
26macro(PKGCONFIG _package _include_DIR _link_DIR _link_FLAGS _cflags)
27  message(STATUS
28    "WARNING: you are using the obsolete 'PKGCONFIG' macro, use FindPkgConfig")
29# reset the variables at the beginning
30  set(${_include_DIR})
31  set(${_link_DIR})
32  set(${_link_FLAGS})
33  set(${_cflags})
34
35  # if pkg-config has been found
36  if(PKGCONFIG_EXECUTABLE)
37
38    exec_program(${PKGCONFIG_EXECUTABLE} ARGS ${_package} --exists RETURN_VALUE _return_VALUE OUTPUT_VARIABLE _pkgconfigDevNull )
39
40    # and if the package of interest also exists for pkg-config, then get the information
41    if(NOT _return_VALUE)
42
43      exec_program(${PKGCONFIG_EXECUTABLE} ARGS ${_package} --variable=includedir
44        OUTPUT_VARIABLE ${_include_DIR} )
45      string(REGEX REPLACE "[\r\n]" " " ${_include_DIR} "${${_include_DIR}}")
46
47
48      exec_program(${PKGCONFIG_EXECUTABLE} ARGS ${_package} --variable=libdir
49        OUTPUT_VARIABLE ${_link_DIR} )
50      string(REGEX REPLACE "[\r\n]" " " ${_link_DIR} "${${_link_DIR}}")
51
52      exec_program(${PKGCONFIG_EXECUTABLE} ARGS ${_package} --libs
53        OUTPUT_VARIABLE ${_link_FLAGS} )
54      string(REGEX REPLACE "[\r\n]" " " ${_link_FLAGS} "${${_link_FLAGS}}")
55
56      exec_program(${PKGCONFIG_EXECUTABLE} ARGS ${_package} --cflags
57        OUTPUT_VARIABLE ${_cflags} )
58      string(REGEX REPLACE "[\r\n]" " " ${_cflags} "${${_cflags}}")
59
60    else()
61
62      message(STATUS "PKGCONFIG() indicates that ${_package} is not installed (install the package which contains ${_package}.pc if you want to support this feature)")
63
64    endif()
65
66  # if pkg-config has NOT been found, INFORM the user
67  else()
68
69    message(STATUS "WARNING: PKGCONFIG() indicates that the tool pkg-config has not been found on your system. You should install it.")
70
71  endif()
72
73endmacro()
74
75mark_as_advanced(PKGCONFIG_EXECUTABLE)
76