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venv/Lib/site-packages/cmake/data/share/cmake-3.18/Modules/UsePkgConfig.cmake

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+# Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
+# file Copyright.txt or https://cmake.org/licensing for details.
+
+#[=======================================================================[.rst:
+UsePkgConfig
+------------
+
+Obsolete pkg-config module for CMake, use FindPkgConfig instead.
+
+
+
+This module defines the following macro:
+
+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
+#]=======================================================================]
+
+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()
+
+      message(STATUS "PKGCONFIG() indicates that ${_package} is not installed (install the package which contains ${_package}.pc if you want to support this feature)")
+
+    endif()
+
+  # if pkg-config has NOT been found, INFORM the user
+  else()
+
+    message(STATUS "WARNING: PKGCONFIG() indicates that the tool pkg-config has not been found on your system. You should install it.")
+
+  endif()
+
+endmacro()
+
+mark_as_advanced(PKGCONFIG_EXECUTABLE)