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+# - Find libidn
+# Find the libidn library, and more particularly the stringprep header.
+#
+# This module defines the following variables:
+# LIBIDN_FOUND - True if library and include directory are found
+# If set to TRUE, the following are also defined:
+# LIBIDN_INCLUDE_DIRS - The directory where to find the header file
+# LIBIDN_LIBRARIES - Where to find the library file
+#
+# For conveniance, these variables are also set. They have the same values
+# than the variables above. The user can thus choose his/her prefered way
+# to write them.
+# LIBIDN_INCLUDE_DIR
+# LIBIDN_LIBRARY
+#
+# This file is in the public domain
+
+include(FindPkgConfig)
+if(NOT LIBIDN_FOUND)
+ pkg_check_modules(LIBIDN libidn)
+endif()
+
+if(NOT LIBIDN_FOUND)
+ find_path(LIBIDN_INCLUDE_DIRS NAMES stringprep.h
+ DOC "The libidn include directory")
+
+ # The library containing the stringprep module is libidn
+ find_library(LIBIDN_LIBRARIES NAMES idn
+ DOC "The libidn library")
+
+ # Use some standard module to handle the QUIETLY and REQUIRED arguments, and
+ # set LIBIDN_FOUND to TRUE if these two variables are set.
+ include(FindPackageHandleStandardArgs)
+ find_package_handle_standard_args(LIBIDN REQUIRED_VARS LIBIDN_LIBRARIES LIBIDN_INCLUDE_DIRS)
+
+ # Compatibility for all the ways of writing these variables
+ if(LIBIDN_FOUND)
+ set(LIBIDN_INCLUDE_DIR ${LIBIDN_INCLUDE_DIRS} CACHE INTERNAL "")
+ set(LIBIDN_LIBRARY ${LIBIDN_LIBRARIES} CACHE INTERNAL "")
+ set(LIBIDN_FOUN ${LIBIDN_FOUND} CACHE INTERNAL "")
+ endif()
+endif()
+
+mark_as_advanced(LIBIDN_INCLUDE_DIRS LIBIDN_LIBRARIES)