--- old/make/autoconf/help.m4	2020-07-31 10:28:45.876861379 -0700
+++ new/make/autoconf/help.m4	2020-07-31 10:28:45.636861383 -0700
@@ -101,6 +101,8 @@
       PKGHANDLER_COMMAND="sudo apt-get install libfontconfig1-dev" ;;
     freetype)
       PKGHANDLER_COMMAND="sudo apt-get install libfreetype6-dev" ;;
+    harfbuzz)
+      PKGHANDLER_COMMAND="sudo apt-get install libharfbuzz-dev" ;;
     ffi)
       PKGHANDLER_COMMAND="sudo apt-get install libffi-dev" ;;
     x11)
@@ -124,6 +126,8 @@
       PKGHANDLER_COMMAND="sudo zypper install fontconfig-devel" ;;
     freetype)
       PKGHANDLER_COMMAND="sudo zypper install freetype-devel" ;;
+    harfbuzz)
+      PKGHANDLER_COMMAND="sudo zypper install harfbuzz-devel" ;;
     x11)
       PKGHANDLER_COMMAND="sudo zypper install libX11-devel libXext-devel libXrender-devel libXrandr-devel libXtst-devel libXt-devel libXi-devel" ;;
     ccache)
@@ -143,6 +147,8 @@
       PKGHANDLER_COMMAND="sudo yum install fontconfig-devel" ;;
     freetype)
       PKGHANDLER_COMMAND="sudo yum install freetype-devel" ;;
+    harfbuzz)
+      PKGHANDLER_COMMAND="sudo yum install harfbuzz-devel" ;;
     x11)
       PKGHANDLER_COMMAND="sudo yum install libXtst-devel libXt-devel libXrender-devel libXrandr-devel libXi-devel" ;;
     ccache)
--- old/make/autoconf/lib-bundled.m4	2020-07-31 10:28:46.344861372 -0700
+++ new/make/autoconf/lib-bundled.m4	2020-07-31 10:28:46.120861375 -0700
@@ -40,6 +40,7 @@
   LIB_SETUP_LIBPNG
   LIB_SETUP_ZLIB
   LIB_SETUP_LCMS
+  LIB_SETUP_HARFBUZZ
 ])
 
 ################################################################################
@@ -263,3 +264,43 @@
   AC_SUBST(LCMS_CFLAGS)
   AC_SUBST(LCMS_LIBS)
 ])
+
+################################################################################
+# Setup harfbuzz
+################################################################################
+AC_DEFUN_ONCE([LIB_SETUP_HARFBUZZ],
+[
+  AC_ARG_WITH(harfbuzz, [AS_HELP_STRING([--with-harfbuzz],
+      [use harfbuzz from build system or OpenJDK source (system, bundled) @<:@bundled@:>@])])
+
+  AC_MSG_CHECKING([for which harfbuzz to use])
+
+  DEFAULT_HARFBUZZ=bundled
+  # If user didn't specify, use DEFAULT_HARFBUZZ
+  if test "x${with_harfbuzz}" = "x"; then
+    with_harfbuzz=${DEFAULT_HARFBUZZ}
+  fi
+
+  if test "x${with_harfbuzz}" = "xbundled"; then
+    USE_EXTERNAL_HARFBUZZ=false
+    HARFBUZZ_CFLAGS=""
+    HARFBUZZ_LIBS=""
+    AC_MSG_RESULT([bundled])
+  elif test "x${with_harfbuzz}" = "xsystem"; then
+    AC_MSG_RESULT([system])
+    PKG_CHECK_MODULES([HARFBUZZ], [harfbuzz], [HARFBUZZ_FOUND=yes], [HARFBUZZ_FOUND=no])
+    if test "x${HARFBUZZ_FOUND}" = "xyes"; then
+      # PKG_CHECK_MODULES will set HARFBUZZ_CFLAGS and HARFBUZZ_LIBS
+      USE_EXTERNAL_HARFBUZZ=true
+    else
+      HELP_MSG_MISSING_DEPENDENCY([harfbuzz])
+      AC_MSG_ERROR([--with-harfbuzz=system specified, but no harfbuzz found! $HELP_MSG])
+    fi
+  else
+    AC_MSG_ERROR([Invalid value for --with-harfbuzz: ${with_harfbuzz}, use 'system' or 'bundled'])
+  fi
+
+  AC_SUBST(USE_EXTERNAL_HARFBUZZ)
+  AC_SUBST(HARFBUZZ_CFLAGS)
+  AC_SUBST(HARFBUZZ_LIBS)
+])
--- old/make/autoconf/spec.gmk.in	2020-07-31 10:28:46.832861364 -0700
+++ new/make/autoconf/spec.gmk.in	2020-07-31 10:28:46.608861367 -0700
@@ -824,6 +824,10 @@
 LCMS_CFLAGS:=@LCMS_CFLAGS@
 LCMS_LIBS:=@LCMS_LIBS@
 
+USE_EXTERNAL_HARFBUZZ:=@USE_EXTERNAL_HARFBUZZ@
+HARFBUZZ_CFLAGS:=@HARFBUZZ_CFLAGS@
+HARFBUZZ_LIBS:=@HARFBUZZ_LIBS@
+
 USE_EXTERNAL_LIBPNG:=@USE_EXTERNAL_LIBPNG@
 PNG_LIBS:=@PNG_LIBS@
 PNG_CFLAGS:=@PNG_CFLAGS@
--- old/make/modules/java.desktop/Copy.gmk	2020-07-31 10:28:47.344861355 -0700
+++ new/make/modules/java.desktop/Copy.gmk	2020-07-31 10:28:47.080861360 -0700
@@ -71,6 +71,10 @@
   LEGAL_EXCLUDES += freetype.md
 endif
 
+ifeq ($(USE_EXTERNAL_HARFBUZZ), true)
+  LEGAL_EXCLUDES += harfbuzz.md
+endif
+
 $(eval $(call SetupCopyLegalFiles, COPY_LEGAL, \
     EXCLUDES := $(LEGAL_EXCLUDES), \
 ))
--- old/make/modules/java.desktop/lib/Awt2dLibraries.gmk	2020-07-31 10:28:47.892861346 -0700
+++ new/make/modules/java.desktop/lib/Awt2dLibraries.gmk	2020-07-31 10:28:47.608861351 -0700
@@ -432,6 +432,9 @@
 
 ###########################################################################
 
+ifeq ($(USE_EXTERNAL_HARFBUZZ), true)
+  LIBHARFBUZZ_LIBS := $(HARFBUZZ_LIBS)
+else
 HARFBUZZ_CFLAGS := -DHAVE_OT -DHAVE_FALLBACK -DHAVE_UCDN -DHAVE_ROUND
 
 # This is better than adding EXPORT_ALL_SYMBOLS
@@ -508,6 +511,8 @@
 
 TARGETS += $(BUILD_LIBHARFBUZZ)
 
+endif
+
 ###########################################################################
 
 LIBFONTMANAGER_EXTRA_HEADER_DIRS := \
@@ -576,7 +581,11 @@
         $(WIN_AWT_LIB), \
 ))
 
-$(BUILD_LIBFONTMANAGER): $(BUILD_LIBAWT) $(BUILD_LIBHARFBUZZ)
+$(BUILD_LIBFONTMANAGER): $(BUILD_LIBAWT)
+
+ifeq ($(USE_EXTERNAL_HARFBUZZ), false)
+  $(BUILD_LIBFONTMANAGER): $(BUILD_LIBHARFBUZZ)
+endif
 
 ifeq ($(call isTargetOs, macosx), true)
   $(BUILD_LIBFONTMANAGER): $(call FindLib, $(MODULE), awt_lwawt)