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backport from upstream.

From b468fc95150b7ca0e766e7c385a60879e65322d4 Mon Sep 17 00:00:00 2001
From: "K. Handa" <handa@gnu.org>
Date: Tue, 23 Oct 2018 00:05:46 +0900
Subject: Use pkg-config for freetype, use %p to print a pointer

---
 ChangeLog     |  5 +++++
 configure.ac  | 48 +++++++++++++++++++-----------------------------
 src/ChangeLog |  5 +++++
 src/chartab.c |  4 ++--
 4 files changed, 31 insertions(+), 31 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index b069d89..9dfc0b0 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2018-10-22  K. Handa  <handa@gnu.org>
+
+	* configure.ac: Do not use the program freetype-config, use
+	PKG_CHECK_MODULES for checking freetype2.
+
 2018-02-08  K. Handa  <handa@gnu.org>
 
 	Version 1.8.0 released.
diff --git a/configure.ac b/configure.ac
index 7f8b08e..3516bad 100644
--- a/configure.ac
+++ b/configure.ac
@@ -204,36 +204,26 @@ fi
 AC_SUBST(OTF_LD_FLAGS)
 
 dnl Check for Freetype2 usability.
-AC_CHECK_PROG(HAVE_FREETYPE_CONFIG, freetype-config, yes)
-if test "x$HAVE_FREETYPE_CONFIG" = "xyes"; then
-  FREETYPE_INC=`freetype-config --cflags`
-  save_CPPFLAGS="$CPPFLAGS"
-  CPPFLAGS="$CPPFLAGS $FREETYPE_INC"
-  AC_CHECK_HEADER(ft2build.h, HAVE_FREETYPE=yes,
-  			      HAVE_FREETYPE=no CPPFLAGS="$save_CPPFLAGS")
-  if test "x$HAVE_FREETYPE" = "xyes" ; then
-    save_LIBS="$LIBS"
-    LIBS="$LIBS `freetype-config --libs`"
-    AC_CHECK_LIB(freetype, FT_Init_FreeType, HAVE_FREETYPE=yes,
-    			   		     HAVE_FREETYPE=no)
-    LIBS="$save_LIBS"
-    if test "x$HAVE_FREETYPE" = "xyes"; then
-      FREETYPE_LD_FLAGS=`freetype-config --libs`
-      AC_DEFINE(HAVE_FREETYPE, 1, 
-		[Define to 1 if you have FreeType library and header file.])
-      M17N_EXT_LIBS="$M17N_EXT_LIBS freetype"
-      AC_CHECK_HEADER(freetype/ftbdf.h, HAVE_FTBDF_H=yes, HAVE_FTBDF_H=no,
-		      [#include <ft2build.h>
+PKG_CHECK_MODULES([FREETYPE], [freetype2], [HAVE_FREETYPE=yes],
+                                           [HAVE_FREETYPE=no])
+AS_IF([test "x$HAVE_FREETYPE" = "xyes"],
+  [CPPFLAGS="$CPPFLAGS $FREETYPE_CFLAGS";
+   FREETYPE_LD_FLAGS=FREETYPE_LIBS;
+   AC_DEFINE([HAVE_FREETYPE], [1],
+             [Define to 1 if you have FreeType library and header file.])
+   M17N_EXT_LIBS="$M17N_EXT_LIBS freetype";
+   AC_CHECK_HEADER([freetype/ftbdf.h], [HAVE_FTBDF_H=yes], [HAVE_FTBDF_H=no],
+                   [#include <ft2build.h>
 #include FT_FREETYPE_H])
-      if test "x$HAVE_FTBDF_H" = "xyes"; then
-        AC_DEFINE(HAVE_FTBDF_H, 1,
-		  [Define to 1 if you have freetype/ftbdf.h.])
-      fi
-      CONFIG_FLAGS="$CONFIG_FLAGS -DHAVE_FREETYPE"
-    fi
-  fi
-fi
-AC_SUBST(FREETYPE_LD_FLAGS)
+   AS_IF([test "x$HAVE_FTBDF_H" = "xyes"],
+     [AC_DEFINE([HAVE_FTBDF_H], [1],
+                [Define to 1 if you have freetype/ftbdf.h.])],
+     [])
+   CONFIG_FLAGS="$CONFIG_FLAGS -DHAVE_FREETYPE"
+  ],
+  []
+  )
+AC_SUBST([FREETYPE_LD_FLAGS])
 
 dnl Check for Xft2 usability.
 save_CPPFLAGS="$CPPFLAGS"
diff --git a/src/ChangeLog b/src/ChangeLog
index ee28ea6..8cb91c1 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,3 +1,8 @@
+2018-10-22  K. Handa  <handa@gnu.org>
+
+	* chartab.c (dump_sub_chartab): Use %p directive to print a
+	pointer value.
+
 2018-02-08  K. Handa  <handa@gnu.org>
 
 	Version 1.8.0 released.
diff --git a/src/chartab.c b/src/chartab.c
index d58aa65..8aeb6d7 100644
--- a/src/chartab.c
+++ b/src/chartab.c
@@ -558,7 +558,7 @@ dump_sub_chartab (MSubCharTable *table, void *default_value,
 	fprintf (mdebug__output, "(default nil)");
     }
   else
-    fprintf (mdebug__output, "(default #x%X)", (unsigned) table->default_value);
+    fprintf (mdebug__output, "(default #x%p)", table->default_value);
 
   default_value = table->default_value;
   if (table->contents.tables)
@@ -589,7 +589,7 @@ dump_sub_chartab (MSubCharTable *table, void *default_value,
 		  fprintf (mdebug__output, "nil)");
 	      }
 	    else
-	      fprintf (mdebug__output, " #xx%X)", (unsigned) default_value);
+	      fprintf (mdebug__output, " #x%p)", default_value);
 	  }
     }
   fprintf (mdebug__output, ")");
-- 
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