diff --git a/configure.ac b/configure.ac
index 6948aa6ff..f985e1047 100644
--- a/configure.ac
+++ b/configure.ac
@@ -147,7 +147,7 @@ AC_ARG_WITH(glib,
 			[Use glib @<:@default=auto@:>@])],,
 	[with_glib=auto])
 have_glib=false
-GLIB_DEPS="glib-2.0 >= 2.38"
+GLIB_DEPS="glib-2.0 >= 2.19.1"
 AC_SUBST(GLIB_DEPS)
 if test "x$with_glib" = "xyes" -o "x$with_glib" = "xauto"; then
 	PKG_CHECK_MODULES(GLIB, $GLIB_DEPS, have_glib=true, :)
diff --git a/src/hb-glib.cc b/src/hb-glib.cc
index e20352475..2b91b5b65 100644
--- a/src/hb-glib.cc
+++ b/src/hb-glib.cc
@@ -382,6 +382,7 @@ hb_glib_get_unicode_funcs (void)
   return const_cast<hb_unicode_funcs_t *> (&_hb_glib_unicode_funcs);
 }
 
+#if GLIB_CHECK_VERSION(2,31,10)
 /**
  * hb_glib_blob_create:
  *
@@ -398,3 +399,4 @@ hb_glib_blob_create (GBytes *gbytes)
 			 g_bytes_ref (gbytes),
 			 (hb_destroy_func_t) g_bytes_unref);
 }
+#endif
diff --git a/src/hb-glib.h b/src/hb-glib.h
index 12c3e3b3a..5f04183ba 100644
--- a/src/hb-glib.h
+++ b/src/hb-glib.h
@@ -46,9 +46,10 @@ hb_glib_script_from_script (hb_script_t script);
 HB_EXTERN hb_unicode_funcs_t *
 hb_glib_get_unicode_funcs (void);
 
+#if GLIB_CHECK_VERSION(2,31,10)
 HB_EXTERN hb_blob_t *
 hb_glib_blob_create (GBytes *gbytes);
-
+#endif
 
 HB_END_DECLS
 
diff --git a/test/api/test-ot-math.c b/test/api/test-ot-math.c
index 5f4ccb7fc..049656a03 100644
--- a/test/api/test-ot-math.c
+++ b/test/api/test-ot-math.c
@@ -54,7 +54,11 @@ cleanupFreeType (void)
 static void
 openFont(const char* fontFile)
 {
+#if GLIB_CHECK_VERSION(2,37,2)
   gchar* path = g_test_build_filename(G_TEST_DIST, fontFile, NULL);
+#else
+  gchar* path = g_strdup(fontFile);
+#endif
 
   FT_Error ft_error;
   if ((ft_error = FT_New_Face (ft_library, path, 0, &ft_face))) {