# Allow building against system-wide graphite2/harfbuzz.

diff --git config/Makefile.in config/Makefile.in
index e2e11dc0e27e..a6206bb0ff30 100644
--- mozilla/config/Makefile.in
+++ mozilla/config/Makefile.in
@@ -41,6 +41,8 @@ export:: $(export-preqs)
 	$(PYTHON) -m mozbuild.action.preprocessor $(DEFINES) $(ACDEFINES) \
 		-DMOZ_TREE_CAIRO=$(MOZ_TREE_CAIRO) \
 		-DMOZ_TREE_PIXMAN=$(MOZ_TREE_PIXMAN) \
+		-DMOZ_SYSTEM_GRAPHITE2=$(MOZ_SYSTEM_GRAPHITE2) \
+		-DMOZ_SYSTEM_HARFBUZZ=$(MOZ_SYSTEM_HARFBUZZ) \
 		-DMOZ_SYSTEM_HUNSPELL=$(MOZ_SYSTEM_HUNSPELL) \
 		-DMOZ_SYSTEM_BZ2=$(MOZ_SYSTEM_BZ2) \
 		-DMOZ_SYSTEM_ZLIB=$(MOZ_SYSTEM_ZLIB) \
diff --git config/system-headers config/system-headers
index a0c53c651a3e..5ee7f71f9634 100644
--- mozilla/config/system-headers
+++ mozilla/config/system-headers
@@ -1269,6 +1269,15 @@ libsn/sn-launcher.h
 libsn/sn-monitor.h
 libsn/sn-util.h
 #endif
+#if MOZ_SYSTEM_GRAPHITE2==1
+graphite2/Font.h
+graphite2/Segment.h
+#endif
+#if MOZ_SYSTEM_HARFBUZZ==1
+harfbuzz/hb-glib.h
+harfbuzz/hb-ot.h
+harfbuzz/hb.h
+#endif
 #if MOZ_SYSTEM_HUNSPELL==1
 hunspell.hxx
 #endif
diff --git dom/base/moz.build dom/base/moz.build
index 8e19020315ae..2fcdbb6f7b42 100644
--- mozilla/dom/base/moz.build
+++ mozilla/dom/base/moz.build
@@ -464,6 +464,9 @@ if CONFIG['MOZ_BUILD_APP'] in ['browser', 'mobile/android', 'xulrunner']:
 if CONFIG['MOZ_X11']:
     CXXFLAGS += CONFIG['TK_CFLAGS']
 
+if CONFIG['MOZ_SYSTEM_HARFBUZZ']:
+    CXXFLAGS += CONFIG['MOZ_HARFBUZZ_CFLAGS']
+
 GENERATED_FILES += [
     'PropertyUseCounterMap.inc',
     'UseCounterList.h',
diff --git gfx/graphite2/moz-gr-update.sh gfx/graphite2/moz-gr-update.sh
index faaab1b17971..04eff5f09882 100644
--- mozilla/gfx/graphite2/moz-gr-update.sh
+++ mozilla/gfx/graphite2/moz-gr-update.sh
@@ -1,6 +1,7 @@
 #!/bin/bash
 
 # Script used to update the Graphite2 library in the mozilla source tree
+# and bump version for --with-system-graphite2
 
 # This script lives in gfx/graphite2, along with the library source,
 # but must be run from the top level of the mozilla-central tree.
@@ -37,12 +38,16 @@ echo "See" $0 "for update procedure." >> gfx/graphite2/README.mozilla
 #find gfx/graphite2/ -name "*.cpp" -exec perl -p -i -e "s/<cstdio>/<stdio.h>/;s/Windows.h/windows.h/;" {} \;
 #find gfx/graphite2/ -name "*.h" -exec perl -p -i -e "s/<cstdio>/<stdio.h>/;s/Windows.h/windows.h/;" {} \;
 
+# chase version for --with-system-graphite2
+perl -p -i -e "s/[0-9]+\,[0-9]+\,[0-9]+/$RELEASE/ and tr/./,/ \
+  if /GR2_VERSION_REQUIRE/" old-configure.in
+
 # summarize what's been touched
 echo Updated to $RELEASE.
 echo Here is what changed in the gfx/graphite2 directory:
 echo
 
-hg stat gfx/graphite2
+hg stat old-configure.in gfx/graphite2
 
 echo
 echo If gfx/graphite2/src/files.mk has changed, please make corresponding
diff --git gfx/harfbuzz/README-mozilla gfx/harfbuzz/README-mozilla
index 22c76a7df020..a01490bd49ee 100644
--- mozilla/gfx/harfbuzz/README-mozilla
+++ mozilla/gfx/harfbuzz/README-mozilla
@@ -19,3 +19,8 @@ the mozilla tree.
 
 If the collection of source files changes, manual updates to moz.build may be
 needed, as we don't use the upstream makefiles.
+
+The in-tree copy may be omitted during build by --with-system-harfbuzz.
+Make sure to keep pkg-config version check within toolkit/moz.configure in sync
+with checkout version or increment latest tag by one if it's not based
+on upstream release.
diff --git gfx/moz.build gfx/moz.build
index 771f652e837a..3b358d84e384 100644
--- mozilla/gfx/moz.build
+++ mozilla/gfx/moz.build
@@ -10,6 +10,12 @@ with Files('**'):
 if CONFIG['MOZ_TREE_CAIRO']:
     DIRS += ['cairo']
 
+if not CONFIG['MOZ_SYSTEM_GRAPHITE2']:
+    DIRS += ['graphite2/src' ]
+
+if not CONFIG['MOZ_SYSTEM_HARFBUZZ']:
+    DIRS += ['harfbuzz/src']
+
 DIRS += [
     '2d',
     'ycbcr',
@@ -18,8 +24,6 @@ DIRS += [
     'qcms',
     'gl',
     'layers',
-    'graphite2/src',
-    'harfbuzz/src',
     'ots/src',
     'thebes',
     'ipc',
diff --git gfx/skia/generate_mozbuild.py gfx/skia/generate_mozbuild.py
index e06ae3457a47..93faa61594a3 100755
--- mozilla/gfx/skia/generate_mozbuild.py
+++ mozilla/gfx/skia/generate_mozbuild.py
@@ -143,6 +143,9 @@ if CONFIG['CLANG_CXX'] or CONFIG['CLANG_CL']:
         '-Wno-unused-private-field',
     ]
 
+if CONFIG['MOZ_SYSTEM_HARFBUZZ']:
+    CXXFLAGS += CONFIG['MOZ_HARFBUZZ_CFLAGS']
+
 if CONFIG['MOZ_WIDGET_TOOLKIT'] in ('gtk2', 'gtk3', 'android'):
     CXXFLAGS += CONFIG['MOZ_CAIRO_CFLAGS']
     CXXFLAGS += CONFIG['CAIRO_FT_CFLAGS']
diff --git gfx/skia/moz.build gfx/skia/moz.build
index 2118677ca3a8..e4978b413784 100644
--- mozilla/gfx/skia/moz.build
+++ mozilla/gfx/skia/moz.build
@@ -753,6 +753,9 @@ if CONFIG['CLANG_CXX'] or CONFIG['CLANG_CL']:
         '-Wno-unused-private-field',
     ]
 
+if CONFIG['MOZ_SYSTEM_HARFBUZZ']:
+    CXXFLAGS += CONFIG['MOZ_HARFBUZZ_CFLAGS']
+
 if CONFIG['MOZ_WIDGET_TOOLKIT'] in ('gtk2', 'gtk3', 'android'):
     CXXFLAGS += CONFIG['MOZ_CAIRO_CFLAGS']
     CXXFLAGS += CONFIG['CAIRO_FT_CFLAGS']
diff --git gfx/thebes/moz.build gfx/thebes/moz.build
index dee9b7bfa2cb..bd801f3a468e 100644
--- mozilla/gfx/thebes/moz.build
+++ mozilla/gfx/thebes/moz.build
@@ -273,7 +273,13 @@ if CONFIG['MOZ_WIDGET_TOOLKIT'] in ('gtk2', 'gtk3'):
 
 LOCAL_INCLUDES += CONFIG['SKIA_INCLUDES']
 
-DEFINES['GRAPHITE2_STATIC'] = True
+if CONFIG['MOZ_SYSTEM_GRAPHITE2']:
+    CXXFLAGS += CONFIG['MOZ_GRAPHITE2_CFLAGS']
+else:
+    DEFINES['GRAPHITE2_STATIC'] = True
+
+if CONFIG['MOZ_SYSTEM_HARFBUZZ']:
+    CXXFLAGS += CONFIG['MOZ_HARFBUZZ_CFLAGS']
 
 if CONFIG['CLANG_CXX']:
     # Suppress warnings from Skia header files.
diff --git intl/unicharutil/util/moz.build intl/unicharutil/util/moz.build
index cb1233c56d7e..06fb1f9f174b 100644
--- mozilla/intl/unicharutil/util/moz.build
+++ mozilla/intl/unicharutil/util/moz.build
@@ -40,4 +40,7 @@ if CONFIG['_MSC_VER']:
 if CONFIG['ENABLE_INTL_API']:
     USE_LIBS += ['icu']
 
+if CONFIG['MOZ_SYSTEM_HARFBUZZ']:
+    CXXFLAGS += CONFIG['MOZ_HARFBUZZ_CFLAGS']
+
 DIST_INSTALL = True
diff --git netwerk/dns/moz.build netwerk/dns/moz.build
index 79c26e3e7001..c4d93bc5f7dc 100644
--- mozilla/netwerk/dns/moz.build
+++ mozilla/netwerk/dns/moz.build
@@ -69,6 +69,9 @@ LOCAL_INCLUDES += [
     '/netwerk/base',
 ]
 
+if CONFIG['MOZ_SYSTEM_HARFBUZZ']:
+    CXXFLAGS += CONFIG['MOZ_HARFBUZZ_CFLAGS']
+
 if CONFIG['ENABLE_INTL_API']:
     DEFINES['IDNA2008'] = True
     USE_LIBS += ['icu']
diff --git old-configure.in old-configure.in
index 95a58b634593..b614eef85c89 100644
--- mozilla/old-configure.in
+++ mozilla/old-configure.in
@@ -4888,6 +4888,27 @@ dnl ========================================================
 AC_SUBST(MOZ_LINUX_32_SSE2_STARTUP_ERROR)
 
 dnl ========================================================
+dnl Check for graphite2
+dnl ========================================================
+if test -n "$MOZ_SYSTEM_GRAPHITE2"; then
+    dnl graphite2.pc has bogus version, check manually
+    _SAVE_CFLAGS=$CFLAGS
+    CFLAGS="$CFLAGS $MOZ_GRAPHITE2_CFLAGS"
+    AC_TRY_COMPILE([ #include <graphite2/Font.h>
+                     #define GR2_VERSION_REQUIRE(major,minor,bugfix)  \
+                             ( GR2_VERSION_MAJOR * 10000 + GR2_VERSION_MINOR \
+                               * 100 + GR2_VERSION_BUGFIX >= \
+                               (major) * 10000 + (minor) * 100 + (bugfix) )
+                   ], [
+                     #if !GR2_VERSION_REQUIRE(1,3,8)
+                     #error "Insufficient graphite2 version."
+                     #endif
+                   ], [],
+                   [AC_MSG_ERROR([--with-system-graphite2 requested but no working libgraphite2 found])])
+    CFLAGS=$_SAVE_CFLAGS
+fi
+
+dnl ========================================================
 dnl Check for pixman and cairo
 dnl ========================================================
 
diff --git toolkit/library/moz.build toolkit/library/moz.build
index 24f940e1ed7e..079a575adec3 100644
--- mozilla/toolkit/library/moz.build
+++ mozilla/toolkit/library/moz.build
@@ -228,6 +228,12 @@ if CONFIG['MOZ_SYSTEM_JPEG']:
 if CONFIG['MOZ_SYSTEM_PNG']:
     OS_LIBS += CONFIG['MOZ_PNG_LIBS']
 
+if CONFIG['MOZ_SYSTEM_GRAPHITE2']:
+    OS_LIBS += CONFIG['MOZ_GRAPHITE2_LIBS']
+
+if CONFIG['MOZ_SYSTEM_HARFBUZZ']:
+    OS_LIBS += CONFIG['MOZ_HARFBUZZ_LIBS']
+
 if CONFIG['MOZ_SYSTEM_HUNSPELL']:
     OS_LIBS += CONFIG['MOZ_HUNSPELL_LIBS']
 
diff --git toolkit/moz.configure toolkit/moz.configure
index 9297e4d6f501..d8e273887e4b 100644
--- mozilla/toolkit/moz.configure
+++ mozilla/toolkit/moz.configure
@@ -343,6 +343,26 @@ add_old_configure_assignment('FT2_LIBS',
 add_old_configure_assignment('FT2_CFLAGS',
                              delayed_getattr(ft2_info, 'cflags'))
 
+# Graphite2
+# ==============================================================
+option('--with-system-graphite2',
+       help="Use system graphite2 (located with pkgconfig)")
+
+system_graphite2 = pkg_check_modules('MOZ_GRAPHITE2', 'graphite2',
+                                     when='--with-system-graphite2')
+
+set_config('MOZ_SYSTEM_GRAPHITE2', depends_if(system_graphite2)(lambda _: True))
+
+# HarfBuzz
+# ==============================================================
+option('--with-system-harfbuzz',
+       help="Use system harfbuzz (located with pkgconfig)")
+
+system_harfbuzz = pkg_check_modules('MOZ_HARFBUZZ', 'harfbuzz >= 1.4.1',
+                                    when='--with-system-harfbuzz')
+
+set_config('MOZ_SYSTEM_HARFBUZZ', depends_if(system_harfbuzz)(lambda _: True))
+
 # Apple platform decoder support
 # ==============================================================
 @depends(toolkit)