diff --git a/mozilla/configure b/mozilla/configure
index 2e84c91f5b1..902383d9a13 100755
--- a/mozilla/configure
+++ b/mozilla/configure
@@ -20169,6 +20169,7 @@ EOF
            PS_SURFACE_FEATURE="#define CAIRO_HAS_PS_SURFACE 1"
            PDF_SURFACE_FEATURE="#define CAIRO_HAS_PDF_SURFACE 1"
            FT_FONT_FEATURE="#define CAIRO_HAS_FT_FONT 1"
+           FT_HAS_GS_EMBOLDEN="#define HAVE_FT_GLYPHSLOT_EMBOLDEN 1"
            MOZ_ENABLE_CAIRO_FT=1
            CAIRO_FT_CFLAGS="$FT2_CFLAGS"
        fi
@@ -21677,6 +21678,7 @@ s%@MOZ_LIBART_LIBS@%$MOZ_LIBART_LIBS%g
 s%@CAIRO_FT_CFLAGS@%$CAIRO_FT_CFLAGS%g
 s%@CAIRO_FT_LIBS@%$CAIRO_FT_LIBS%g
 s%@MOZ_ENABLE_CAIRO_FT@%$MOZ_ENABLE_CAIRO_FT%g
+s%@FT_HAS_GS_EMBOLDEN@%$FT_HAS_GS_EMBOLDEN%g
 s%@PS_SURFACE_FEATURE@%$PS_SURFACE_FEATURE%g
 s%@PDF_SURFACE_FEATURE@%$PDF_SURFACE_FEATURE%g
 s%@SVG_SURFACE_FEATURE@%$SVG_SURFACE_FEATURE%g
diff --git a/mozilla/configure.in b/mozilla/configure.in
index f86af0da3ff..86f7947e1d6 100644
--- a/mozilla/configure.in
+++ b/mozilla/configure.in
@@ -7243,6 +7243,7 @@ if test "$MOZ_SVG" -o "$MOZ_ENABLE_CANVAS" -o "$MOZ_ENABLE_CAIRO_GFX" ; then
            PS_SURFACE_FEATURE="#define CAIRO_HAS_PS_SURFACE 1"
            PDF_SURFACE_FEATURE="#define CAIRO_HAS_PDF_SURFACE 1"
            FT_FONT_FEATURE="#define CAIRO_HAS_FT_FONT 1"
+           FT_HAS_GS_EMBOLDEN="#define HAVE_FT_GLYPHSLOT_EMBOLDEN 1"
            MOZ_ENABLE_CAIRO_FT=1
            CAIRO_FT_CFLAGS="$FT2_CFLAGS"
        fi
@@ -7295,6 +7296,7 @@ if test "$MOZ_SVG" -o "$MOZ_ENABLE_CANVAS" -o "$MOZ_ENABLE_CAIRO_GFX" ; then
        AC_SUBST(GLITZ_SURFACE_FEATURE)
        AC_SUBST(DIRECTFB_SURFACE_FEATURE)
        AC_SUBST(FT_FONT_FEATURE)
+       AC_SUBST(FT_HAS_GS_EMBOLDEN)
        AC_SUBST(WIN32_FONT_FEATURE)
        AC_SUBST(ATSUI_FONT_FEATURE)
        AC_SUBST(PNG_FUNCTIONS_FEATURE)
diff --git a/mozilla/gfx/cairo/cairo/src/cairo-features.h.in b/mozilla/gfx/cairo/cairo/src/cairo-features.h.in
index 84fb3e5a8ef..ae5315cd5d8 100644
--- a/mozilla/gfx/cairo/cairo/src/cairo-features.h.in
+++ b/mozilla/gfx/cairo/cairo/src/cairo-features.h.in
@@ -81,6 +81,8 @@
 
 @FT_FONT_FEATURE@
 
+@FT_HAS_GS_EMBOLDEN@
+
 @WIN32_FONT_FEATURE@
 
 @ATSUI_FONT_FEATURE@
diff --git a/mozilla/gfx/cairo/cairo/test/Makefile.in b/mozilla/gfx/cairo/cairo/test/Makefile.in
index f2bbb663ad4..461847e71f0 100644
--- a/mozilla/gfx/cairo/cairo/test/Makefile.in
+++ b/mozilla/gfx/cairo/cairo/test/Makefile.in
@@ -183,6 +183,7 @@ FREETYPE_CONFIG = @FREETYPE_CONFIG@
 FREETYPE_LIBS = @FREETYPE_LIBS@
 FREETYPE_REQUIRES = @FREETYPE_REQUIRES@
 FT_FONT_FEATURE = @FT_FONT_FEATURE@
+FT_HAS_GS_EMBOLDEN = @FT_HAS_GS_EMBOLDEN@
 GLITZ_CFLAGS = @GLITZ_CFLAGS@
 GLITZ_LIBS = @GLITZ_LIBS@
 GLITZ_REQUIRES = @GLITZ_REQUIRES@