1 # - pkg-config module for CMake
2 #
3 # Defines the following macros:
4 #
5 # PKGCONFIG_FOUND(package found)
6 # PKGCONFIG(package includedir libdir linkflags cflags)
7 # PKGCONFIG_VERSION(package version)
8 # PKGCONFIG_DEFINITION(package definition)
10 # Calling PKGCONFIG_FOUND will fill into the argument the value of the package search's result
11 # e.g. PKGCONFIG_FOUND(libart-2.0 LIBART_FOUND)
12 #
13 # Calling PKGCONFIG_VERSION will fill the desired version into the argument,
14 # e.g. PKGCONFIG_VERSION(libart-2.0 LIBART_VERSION)
15 # Calling PKGCONFIG will fill the desired information into the 4 given arguments,
16 # e.g. PKGCONFIG(libart-2.0 LIBART_INCLUDE_DIR LIBART_LINK_DIR LIBART_LINK_FLAGS LIBART_CFLAGS)
17 # if pkg-config was NOT found or the specified software package doesn't exist, the
18 # variable will be empty when the function returns, otherwise they will contain the respective information
19 #
20 # Calling PKGCONFIG_VERSION will fill the desired version into the argument,
21 # e.g. PKGCONFIG_VERSION(libart-2.0 LIBART_VERSION)
22 #
23 # Calling PKGCONFIG_DEFINITION will fill the definition (e.g -D_REENTRANT) into the argument,
24 # e.g. PKGCONFIG_DEFINITION(libart-2.0 LIBART_DEFINITION)
26 FIND_PROGRAM(PKGCONFIG_EXECUTABLE NAMES pkg-config PATHS /usr/local/bin )
28 MACRO(STRIP_NEWLINES _string_var)
29 STRING(REGEX REPLACE "[\n\r]+" "" ${_string_var} ${${_string_var}})
30 ENDMACRO(STRIP_NEWLINES _string_var)
32 MACRO(PKGCONFIG_FOUND _package _found)
33 # reset the variable at the beginning
34 SET(${_found})
36 # if pkg-config has been found
37 IF(PKGCONFIG_EXECUTABLE)
39 EXEC_PROGRAM(${PKGCONFIG_EXECUTABLE} ARGS ${_package} --print-errors --exists RETURN_VALUE _return_VALUE OUTPUT_VARIABLE _pkgconfigDevNull )
41 IF(${_pkgconfigDevNull})
42 MESSAGE(STATUS "${_pkgconfigDevNull}")
43 ENDIF(${_pkgconfigDevNull})
45 IF(NOT _return_VALUE)
46 SET(${_found} "TRUE")
47 ENDIF(NOT _return_VALUE)
48 ENDIF(PKGCONFIG_EXECUTABLE)
50 ENDMACRO(PKGCONFIG_FOUND _found)
52 MACRO(PKGCONFIG _package _include_DIR _link_DIR _link_FLAGS _cflags)
53 # reset the variables at the beginning
54 SET(${_include_DIR})
55 SET(${_link_DIR})
56 SET(${_link_FLAGS})
57 SET(${_cflags})
59 # if pkg-config has been found
60 IF(PKGCONFIG_EXECUTABLE)
62 EXEC_PROGRAM(${PKGCONFIG_EXECUTABLE} ARGS ${_package} --exists RETURN_VALUE _return_VALUE OUTPUT_VARIABLE _pkgconfigDevNull )
64 # and if the package of interest also exists for pkg-config, then get the information
65 IF(NOT _return_VALUE)
67 EXEC_PROGRAM(${PKGCONFIG_EXECUTABLE} ARGS ${_package} --variable=includedir OUTPUT_VARIABLE ${_include_DIR} )
69 EXEC_PROGRAM(${PKGCONFIG_EXECUTABLE} ARGS ${_package} --variable=libdir OUTPUT_VARIABLE ${_link_DIR} )
71 EXEC_PROGRAM(${PKGCONFIG_EXECUTABLE} ARGS ${_package} --libs OUTPUT_VARIABLE ${_link_FLAGS} )
73 EXEC_PROGRAM(${PKGCONFIG_EXECUTABLE} ARGS ${_package} --cflags OUTPUT_VARIABLE ${_cflags} )
75 STRIP_NEWLINES(${_cflags})
77 ENDIF(NOT _return_VALUE)
79 ENDIF(PKGCONFIG_EXECUTABLE)
81 ENDMACRO(PKGCONFIG _include_DIR _link_DIR _link_FLAGS _cflags)
83 MACRO(PKGCONFIG_VERSION _package _version)
84 # reset the variables at the beginning
85 SET(${_version})
87 # if pkg-config has been found
88 IF(PKGCONFIG_EXECUTABLE)
89 EXEC_PROGRAM(${PKGCONFIG_EXECUTABLE} ARGS --print-errors ${_package} --exists RETURN_VALUE _return_VALUE OUTPUT_VARIABLE _pkgconfigDevNull )
91 # and if the package of interest also exists for pkg-config, then get the information
92 IF(NOT _return_VALUE)
93 EXEC_PROGRAM(${PKGCONFIG_EXECUTABLE} ARGS --print-errors ${_package} --modversion OUTPUT_VARIABLE ${_version} )
94 ENDIF(NOT _return_VALUE)
96 ENDIF(PKGCONFIG_EXECUTABLE)
98 ENDMACRO(PKGCONFIG_VERSION _package _version)
100 MARK_AS_ADVANCED(PKGCONFIG_EXECUTABLE)
102 MACRO(PKGCONFIG_DEFINITION _package _definition)
103 # reset the variables at the beginning
104 SET(${_definition})
106 # if pkg-config has been found
107 IF(PKGCONFIG_EXECUTABLE)
108 EXEC_PROGRAM(${PKGCONFIG_EXECUTABLE} ARGS --print-errors ${_package} --exists RETURN_VALUE _return_VALUE OUTPUT_VARIABLE _pkgconfigDevNull )
110 # and if the package of interest also exists for pkg-config, then get the information
111 IF(NOT _return_VALUE)
112 EXEC_PROGRAM(${PKGCONFIG_EXECUTABLE} ARGS --print-errors ${_package} --cflags-only-other OUTPUT_VARIABLE ${_definition} )
113 ENDIF(NOT _return_VALUE)
115 ENDIF(PKGCONFIG_EXECUTABLE)
117 ENDMACRO(PKGCONFIG_DEFINITION _package _definition)
119 MARK_AS_ADVANCED(PKGCONFIG_EXECUTABLE)