diff -rupN fontconfig-2.13.1/configure.ac fontconfig-2.13.1-new/configure.ac
--- fontconfig-2.13.1/configure.ac	2018-08-30 10:20:15.000000000 +0200
+++ fontconfig-2.13.1-new/configure.ac	2019-08-28 16:58:14.084705381 +0200
@@ -732,6 +732,21 @@ fi
 AM_CONDITIONAL(HAVE_PTHREAD, $have_pthread)
 
 
+#
+# Allow not building tests
+#
+
+default_tests="yes"
+
+AC_ARG_ENABLE(tests,
+	[AC_HELP_STRING([--disable-tests],
+			[Don't build tests])],
+	,
+	enable_tests=$default_tests)
+
+AM_CONDITIONAL(ENABLE_TESTS, test "x$enable_tests" = xyes)
+
+
 dnl ===========================================================================
 
 #
diff -rupN fontconfig-2.13.1/Makefile.am fontconfig-2.13.1-new/Makefile.am
--- fontconfig-2.13.1/Makefile.am	2018-06-05 12:36:38.000000000 +0200
+++ fontconfig-2.13.1-new/Makefile.am	2019-08-28 16:58:30.463695933 +0200
@@ -24,7 +24,10 @@
 SUBDIRS=fontconfig fc-case fc-lang src \
 	fc-cache fc-cat fc-conflist fc-list fc-match \
 	fc-pattern fc-query fc-scan fc-validate conf.d \
-	its po po-conf test
+	its po po-conf
+if ENABLE_TESTS
+SUBDIRS += test
+endif
 if ENABLE_DOCS
 SUBDIRS += doc
 endif