From: Sandro Santilli <strk@kbt.io>
Date: Thu, 9 May 2019 13:21:17 +0000 (+0000)
Subject: Give meaningful error upon missing flex/bison
X-Git-Tag: 3.0.0alpha1~9
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=72a4ee27556afabc698ba47a1c0ce616a40457af;p=postgis

Give meaningful error upon missing flex/bison

git-svn-id: http://svn.osgeo.org/postgis/trunk@17434 b70326c6-7e19-0410-871a-916f4a2858ee
---

diff --git a/liblwgeom/Makefile.in b/liblwgeom/Makefile.in
index 82aaa6561..a5127d06d 100644
--- a/liblwgeom/Makefile.in
+++ b/liblwgeom/Makefile.in
@@ -202,9 +202,17 @@ $(LT_NM_OBJS): %.lo: %.c
 	$(LIBTOOL) --mode=compile $(CC) $(CPPFLAGS) $(CFLAGS) $(NUMERICFLAGS) -c -o $@ $<
 
 lwin_wkt_parse.c lwin_wkt_parse.h: lwin_wkt_parse.y
+	@test -n "$(YACC)" || { \
+			echo "No yacc found, cannot build parser" >&2; \
+			false; \
+	}
 	$(YACC) -p wkt_yy -o'lwin_wkt_parse.c' -d lwin_wkt_parse.y
 
 lwin_wkt_lex.c: lwin_wkt_lex.l
+	@test -n "$(LEX)" || { \
+			echo "No lex found, cannot build parser" >&2; \
+			false; \
+	}
 	$(LEX) -i lwin_wkt_lex.l
 
 liblwgeom.h: liblwgeom.h.in