Create BuildUtf8proc.cmake and FindUtf8proc.cmake

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cmake/FindUtf8proc.cmake

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+# - Try to find utf8proc
+# Once done this will define
+#  UTF8PROC_FOUND - System has utf8proc
+#  UTF8PROC_INCLUDE_DIRS - The utf8proc include directories
+#  UTF8PROC_LIBRARIES - The libraries needed to use utf8proc
+
+if(NOT USE_BUNDLED_UTF8PROC)
+  find_package(PkgConfig)
+  if (PKG_CONFIG_FOUND)
+      pkg_check_modules(PC_UTF8PROC QUIET utf8proc)
+  endif()
+else()
+  set(PC_UTF8PROC_INCLUDEDIR)
+  set(PC_UTF8PROC_INCLUDE_DIRS)
+  set(PC_UTF8PROC_LIBDIR)
+  set(PC_UTF8PROC_LIBRARY_DIRS)
+  set(LIMIT_SEARCH NO_DEFAULT_PATH)
+endif()
+
+set(UTF8PROC_DEFINITIONS ${PC_UTF8PROC_CFLAGS_OTHER})
+
+find_path(UTF8PROC_INCLUDE_DIR utf8proc.h
+          PATHS ${PC_UTF8PROC_INCLUDEDIR} ${PC_UTF8PROC_INCLUDE_DIRS}
+          ${LIMIT_SEARCH})
+
+# If we're asked to use static linkage, add libutf8proc.a as a preferred library name.
+if(UTF8PROC_USE_STATIC)
+  list(APPEND UTF8PROC_NAMES
+    "${CMAKE_STATIC_LIBRARY_PREFIX}utf8proc${CMAKE_STATIC_LIBRARY_SUFFIX}")
+if(MSVC)
+  list(APPEND UTF8PROC_NAMES
+    "${CMAKE_STATIC_LIBRARY_PREFIX}utf8proc_static${CMAKE_STATIC_LIBRARY_SUFFIX}")
+endif()
+endif()
+
+list(APPEND UTF8PROC_NAMES utf8proc)
+if(MSVC)
+  list(APPEND UTF8PROC_NAMES utf8proc_static)
+endif()
+
+find_library(UTF8PROC_LIBRARY NAMES ${UTF8PROC_NAMES}
+  HINTS ${PC_UTF8PROC_LIBDIR} ${PC_UTF8PROC_LIBRARY_DIRS}
+  ${LIMIT_SEARCH})
+
+set(UTF8PROC_LIBRARIES ${UTF8PROC_LIBRARY})
+set(UTF8PROC_INCLUDE_DIRS ${UTF8PROC_INCLUDE_DIR})
+
+include(FindPackageHandleStandardArgs)
+# handle the QUIETLY and REQUIRED arguments and set UTF8PROC_FOUND to TRUE
+# if all listed variables are TRUE
+find_package_handle_standard_args(Utf8proc DEFAULT_MSG
+  UTF8PROC_LIBRARY UTF8PROC_INCLUDE_DIR)
+
+mark_as_advanced(UTF8PROC_INCLUDE_DIR UTF8PROC_LIBRARY)