Update freetype sources (2.6.2) in third party.

third_party/freetype2/src/builds/unix/freetype2.m4

Index: third_party/freetype2/src/builds/unix/freetype2.m4
diff --git a/third_party/freetype2/src/builds/unix/freetype2.m4 b/third_party/freetype2/src/builds/unix/freetype2.m4
new file mode 100644
index 0000000000000000000000000000000000000000..3dc88076ab265ec4bc2f5089440308ebcce9c572
--- /dev/null
+++ b/third_party/freetype2/src/builds/unix/freetype2.m4
@@ -0,0 +1,194 @@
+# Configure paths for FreeType2
+# Marcelo Magallon 2001-10-26, based on gtk.m4 by Owen Taylor
+#
+# Copyright 2001-2015 by
+# David Turner, Robert Wilhelm, and Werner Lemberg.
+#
+# This file is part of the FreeType project, and may only be used, modified,
+# and distributed under the terms of the FreeType project license,
+# LICENSE.TXT.  By continuing to use, modify, or distribute this file you
+# indicate that you have read the license and understand and accept it
+# fully.
+#
+# As a special exception to the FreeType project license, this file may be
+# distributed as part of a program that contains a configuration script
+# generated by Autoconf, under the same distribution terms as the rest of
+# that program.
+#
+# serial 4
+
+# AC_CHECK_FT2([MINIMUM-VERSION [, ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]]])
+# Test for FreeType 2, and define FT2_CFLAGS and FT2_LIBS.
+# MINIMUM-VERSION is what libtool reports; the default is `7.0.1' (this is
+# FreeType 2.0.4).
+#
+AC_DEFUN([AC_CHECK_FT2],
+  [# Get the cflags and libraries from the freetype-config script
+   #
+   AC_ARG_WITH([ft-prefix],
+     dnl don't quote AS_HELP_STRING!
+     AS_HELP_STRING([--with-ft-prefix=PREFIX],
+                    [Prefix where FreeType is installed (optional)]),
+     [ft_config_prefix="$withval"],
+     [ft_config_prefix=""])
+
+   AC_ARG_WITH([ft-exec-prefix],
+     dnl don't quote AS_HELP_STRING!
+     AS_HELP_STRING([--with-ft-exec-prefix=PREFIX],
+                    [Exec prefix where FreeType is installed (optional)]),
+     [ft_config_exec_prefix="$withval"],
+     [ft_config_exec_prefix=""])
+
+   AC_ARG_ENABLE([freetypetest],
+     dnl don't quote AS_HELP_STRING!
+     AS_HELP_STRING([--disable-freetypetest],
+                    [Do not try to compile and run a test FreeType program]),
+     [],
+     [enable_fttest=yes])
+
+   if test x$ft_config_exec_prefix != x ; then
+     ft_config_args="$ft_config_args --exec-prefix=$ft_config_exec_prefix"
+     if test x${FT2_CONFIG+set} != xset ; then
+       FT2_CONFIG=$ft_config_exec_prefix/bin/freetype-config
+     fi
+   fi
+
+   if test x$ft_config_prefix != x ; then
+     ft_config_args="$ft_config_args --prefix=$ft_config_prefix"
+     if test x${FT2_CONFIG+set} != xset ; then
+       FT2_CONFIG=$ft_config_prefix/bin/freetype-config
+     fi
+   fi
+
+   if test "x$FT2_CONFIG" = x ; then
+     AC_PATH_TOOL([FT2_CONFIG], [freetype-config], [no])
+   fi
+
+   min_ft_version=m4_if([$1], [], [7.0.1], [$1])
+   AC_MSG_CHECKING([for FreeType -- version >= $min_ft_version])
+   no_ft=""
+   if test "$FT2_CONFIG" = "no" ; then
+     no_ft=yes
+   else
+     FT2_CFLAGS=`$FT2_CONFIG $ft_config_args --cflags`
+     FT2_LIBS=`$FT2_CONFIG $ft_config_args --libs`
+     ft_config_major_version=`$FT2_CONFIG $ft_config_args --version | \
+       sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\1/'`
+     ft_config_minor_version=`$FT2_CONFIG $ft_config_args --version | \
+       sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\2/'`
+     ft_config_micro_version=`$FT2_CONFIG $ft_config_args --version | \
+       sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\3/'`
+     ft_min_major_version=`echo $min_ft_version | \
+       sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\1/'`
+     ft_min_minor_version=`echo $min_ft_version | \
+       sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\2/'`
+     ft_min_micro_version=`echo $min_ft_version | \
+       sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\3/'`
+     if test x$enable_fttest = xyes ; then
+       ft_config_is_lt=""
+       if test $ft_config_major_version -lt $ft_min_major_version ; then
+         ft_config_is_lt=yes
+       else
+         if test $ft_config_major_version -eq $ft_min_major_version ; then
+           if test $ft_config_minor_version -lt $ft_min_minor_version ; then
+             ft_config_is_lt=yes
+           else
+             if test $ft_config_minor_version -eq $ft_min_minor_version ; then
+               if test $ft_config_micro_version -lt $ft_min_micro_version ; then
+                 ft_config_is_lt=yes
+               fi
+             fi
+           fi
+         fi
+       fi
+       if test x$ft_config_is_lt = xyes ; then
+         no_ft=yes
+       else
+         ac_save_CFLAGS="$CFLAGS"
+         ac_save_LIBS="$LIBS"
+         CFLAGS="$CFLAGS $FT2_CFLAGS"
+         LIBS="$FT2_LIBS $LIBS"
+
+         #
+         # Sanity checks for the results of freetype-config to some extent.
+         #
+         AC_RUN_IFELSE([
+             AC_LANG_SOURCE([[
+
+#include <ft2build.h>
+#include FT_FREETYPE_H
+#include <stdio.h>
+#include <stdlib.h>
+
+int
+main()
+{
+  FT_Library library;
+  FT_Error  error;
+
+  error = FT_Init_FreeType(&library);
+
+  if (error)
+    return 1;
+  else
+  {
+    FT_Done_FreeType(library);
+    return 0;
+  }
+}
+
+             ]])
+           ],
+           [],
+           [no_ft=yes],
+           [echo $ECHO_N "cross compiling; assuming OK... $ECHO_C"])
+
+         CFLAGS="$ac_save_CFLAGS"
+         LIBS="$ac_save_LIBS"
+       fi             # test $ft_config_version -lt $ft_min_version
+     fi               # test x$enable_fttest = xyes
+   fi                 # test "$FT2_CONFIG" = "no"
+
+   if test x$no_ft = x ; then
+     AC_MSG_RESULT([yes])
+     m4_if([$2], [], [:], [$2])
+   else
+     AC_MSG_RESULT([no])
+     if test "$FT2_CONFIG" = "no" ; then
+       AC_MSG_WARN([
+
+  The freetype-config script installed by FreeType 2 could not be found.
+  If FreeType 2 was installed in PREFIX, make sure PREFIX/bin is in
+  your path, or set the FT2_CONFIG environment variable to the
+  full path to freetype-config.
+       ])
+     else
+       if test x$ft_config_is_lt = xyes ; then
+         AC_MSG_WARN([
+
+  Your installed version of the FreeType 2 library is too old.
+  If you have different versions of FreeType 2, make sure that
+  correct values for --with-ft-prefix or --with-ft-exec-prefix
+  are used, or set the FT2_CONFIG environment variable to the
+  full path to freetype-config.
+         ])
+       else
+         AC_MSG_WARN([
+
+  The FreeType test program failed to run.  If your system uses
+  shared libraries and they are installed outside the normal
+  system library path, make sure the variable LD_LIBRARY_PATH
+  (or whatever is appropriate for your system) is correctly set.
+         ])
+       fi
+     fi
+
+     FT2_CFLAGS=""
+     FT2_LIBS=""
+     m4_if([$3], [], [:], [$3])
+   fi
+
+   AC_SUBST([FT2_CFLAGS])
+   AC_SUBST([FT2_LIBS])])
+
+# end of freetype2.m4