From 1b7ccf1fb0c78347d44104de7544cdf6d5a2f281 Mon Sep 17 00:00:00 2001
From: Masatake YAMATO <yamato@redhat.com>
Date: Mon, 15 Oct 2018 04:28:08 +0900
Subject: [PATCH] buildsys: don't use %.c to in a suffix rule

Suggested by @b4n and @mqudsi in #1554.

Signed-off-by: Masatake YAMATO <yamato@redhat.com>
---
 Makefile.am | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/Makefile.am b/Makefile.am
index 81bfe5917b..f71f8e31f7 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -99,8 +99,10 @@ optlib2c_verbose = $(optlib2c_verbose_@AM_V@)
 optlib2c_verbose_ = $(optlib2c_verbose_@AM_DEFAULT_V@)
 optlib2c_verbose_0 = @echo OPTLIB2C "  $@";
 OPTLIB2C = $(srcdir)/misc/optlib2c
-%.c: %.ctags $(OPTLIB2C) Makefile
+SUFFIXES += .ctags
+.ctags.c:
 	$(optlib2c_verbose)$(OPTLIB2C) $< > $@
+$(OPTLIB2C_INPUT): $(OPTLIB2C) Makefile
 endif
 dist_ctags_SOURCES = $(ALL_HEADS) $(ALL_SRCS)