diff -pruN fribidi-1.0.6.orig/gen.tab/Makefile.am fribidi-1.0.6/gen.tab/Makefile.am
--- fribidi-1.0.6.orig/gen.tab/Makefile.am	2019-09-27 14:03:47.000000000 +0900
+++ fribidi-1.0.6/gen.tab/Makefile.am	2019-09-27 17:42:00.196295996 +0900
@@ -25,7 +25,7 @@ gen_brackets_type_tab_CPPFLAGS = $(AM_CP
 
 CFLAGS_FOR_BUILD += -DHAVE_CONFIG_H -I$(top_builddir) -I$(top_builddir)/lib -I$(top_srcdir)/lib
 CC = $(CC_FOR_BUILD)
-CFLAGS = $(CFLAGS_FOR_BUILD)
+AM_CFLAGS = $(CFLAGS_FOR_BUILD)
 
 CLEANFILES = $(EXTRA_PROGRAMS)
 DISTCLEANFILES =