From 8521d131941be5a177270bc428fa8e684cd645b5 Mon Sep 17 00:00:00 2001
From: Peter Eisentraut
Date: Thu, 11 Oct 2012 06:57:04 -0400
Subject: Refactor flex and bison make rules

Numerous flex and bison make rules have appeared in the source tree
over time, and they are all virtually identical, so we can replace
them by pattern rules with some variables for customization.

Users of pgxs will also be able to benefit from this.
---
 src/interfaces/ecpg/preproc/Makefile | 15 +--------------
 1 file changed, 1 insertion(+), 14 deletions(-)

(limited to 'src/interfaces')

diff --git a/src/interfaces/ecpg/preproc/Makefile b/src/interfaces/ecpg/preproc/Makefile
index dec425e553..6e117d49c7 100644
--- a/src/interfaces/ecpg/preproc/Makefile
+++ b/src/interfaces/ecpg/preproc/Makefile
@@ -42,20 +42,7 @@ ecpg: $(OBJS) | submake-libpgport
 preproc.o: pgc.c
 
 preproc.h: preproc.c ;
-
-preproc.c: preproc.y
-ifdef BISON
-	$(BISON) -d $(BISONFLAGS) -o $@ $<
-else
-	@$(missing) bison $< $@
-endif
-
-pgc.c: pgc.l
-ifdef FLEX
-	$(FLEX) $(FLEXFLAGS) -o'$@' $<
-else
-	@$(missing) flex $< $@
-endif
+preproc.c: BISONFLAGS += -d
 
 preproc.y: ../../../backend/parser/gram.y parse.pl ecpg.addons ecpg.header ecpg.tokens ecpg.trailer ecpg.type
 	$(PERL) $(srcdir)/parse.pl $(srcdir) < $< > $@
-- 
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