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extern/cmake/2.85/share/cmake-2.8/Modules/UsePkgConfig.cmake

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+# - obsolete pkg-config module for CMake
+#
+# Defines the following macros:
+#
+# PKGCONFIG(package includedir libdir linkflags cflags)
+#
+# Calling PKGCONFIG will fill the desired information into the 4 given arguments,
+# e.g. PKGCONFIG(libart-2.0 LIBART_INCLUDE_DIR LIBART_LINK_DIR LIBART_LINK_FLAGS LIBART_CFLAGS)
+# if pkg-config was NOT found or the specified software package doesn't exist, the
+# variable will be empty when the function returns, otherwise they will contain the respective information
+#
+
+#=============================================================================
+# Copyright 2006-2009 Kitware, Inc.
+#
+# Distributed under the OSI-approved BSD License (the "License");
+# see accompanying file Copyright.txt for details.
+#
+# This software is distributed WITHOUT ANY WARRANTY; without even the
+# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+# See the License for more information.
+#=============================================================================
+# (To distribute this file outside of CMake, substitute the full
+#  License text for the above reference.)
+
+FIND_PROGRAM(PKGCONFIG_EXECUTABLE NAMES pkg-config )
+
+MACRO(PKGCONFIG _package _include_DIR _link_DIR _link_FLAGS _cflags)
+  MESSAGE(STATUS
+    "WARNING: you are using the obsolete 'PKGCONFIG' macro use FindPkgConfig")
+# reset the variables at the beginning
+  SET(${_include_DIR})
+  SET(${_link_DIR})
+  SET(${_link_FLAGS})
+  SET(${_cflags})
+
+  # if pkg-config has been found
+  IF(PKGCONFIG_EXECUTABLE)
+
+    EXEC_PROGRAM(${PKGCONFIG_EXECUTABLE} ARGS ${_package} --exists RETURN_VALUE _return_VALUE OUTPUT_VARIABLE _pkgconfigDevNull )
+
+    # and if the package of interest also exists for pkg-config, then get the information
+    IF(NOT _return_VALUE)
+
+      EXEC_PROGRAM(${PKGCONFIG_EXECUTABLE} ARGS ${_package} --variable=includedir 
+        OUTPUT_VARIABLE ${_include_DIR} )
+      STRING(REGEX REPLACE "[\r\n]" " " ${_include_DIR} "${${_include_DIR}}")
+    
+
+      EXEC_PROGRAM(${PKGCONFIG_EXECUTABLE} ARGS ${_package} --variable=libdir 
+        OUTPUT_VARIABLE ${_link_DIR} )
+      STRING(REGEX REPLACE "[\r\n]" " " ${_link_DIR} "${${_link_DIR}}")
+
+      EXEC_PROGRAM(${PKGCONFIG_EXECUTABLE} ARGS ${_package} --libs 
+        OUTPUT_VARIABLE ${_link_FLAGS} )
+      STRING(REGEX REPLACE "[\r\n]" " " ${_link_FLAGS} "${${_link_FLAGS}}")
+
+      EXEC_PROGRAM(${PKGCONFIG_EXECUTABLE} ARGS ${_package} --cflags 
+        OUTPUT_VARIABLE ${_cflags} )
+      STRING(REGEX REPLACE "[\r\n]" " " ${_cflags} "${${_cflags}}")
+
+    ELSE( NOT _return_VALUE)
+
+      MESSAGE(STATUS "PKGCONFIG() indicates that ${_package} is not installed (install the package which contains ${_package}.pc if you want to support this feature)")
+
+    ENDIF(NOT _return_VALUE)
+    
+  # if pkg-config has NOT been found, INFORM the user
+  ELSE(PKGCONFIG_EXECUTABLE)
+  
+    MESSAGE(STATUS "WARNING: PKGCONFIG() indicates that the tool pkg-config has not been found on your system. You should install it.")
+
+  ENDIF(PKGCONFIG_EXECUTABLE)
+
+ENDMACRO(PKGCONFIG _include_DIR _link_DIR _link_FLAGS _cflags)
+
+MARK_AS_ADVANCED(PKGCONFIG_EXECUTABLE)