From a38628bee05f000790e8246bf752ef26b6585619 Mon Sep 17 00:00:00 2001
From: Dave Abrahams <dave@boostpro.com>
Date: Sat, 10 May 2003 17:57:44 +0000
Subject: [PATCH] Removed redundant -y flag from bison flags

Added -t -v to the yacc/bison flags when --debug is used.

Additionally, we now grab $(YACCFLAGS) from the
environment/command-line to get more yacc diagnostics


[SVN r18379]
---
 historic/jam/src/build.jam | 9 ++++++++-
 jam_src/build.jam          | 9 ++++++++-
 2 files changed, 16 insertions(+), 2 deletions(-)

diff --git a/historic/jam/src/build.jam b/historic/jam/src/build.jam
index c0ff5a7bc..0dd7fc9b7 100644
--- a/historic/jam/src/build.jam
+++ b/historic/jam/src/build.jam
@@ -381,9 +381,16 @@ yacc ?= [ GLOB $(PATH) : bison bison.exe ] ;
 yacc = $(yacc[1]) ;
 switch $(yacc:D=:S=)
 {
-    case bison : yacc += -y -d --yacc ; # -t -l -v ;
+    case bison : yacc += -d --yacc ; # -t -l -v ;
     case yacc  : yacc += -d ;
 }
+
+if $(debug)
+{
+    yacc += -t -v ;
+}
+yacc += $(YACCFLAGS) ;
+
 rule .yacc
 {
     DEPENDS $(<) : $(>) ;
diff --git a/jam_src/build.jam b/jam_src/build.jam
index c0ff5a7bc..0dd7fc9b7 100644
--- a/jam_src/build.jam
+++ b/jam_src/build.jam
@@ -381,9 +381,16 @@ yacc ?= [ GLOB $(PATH) : bison bison.exe ] ;
 yacc = $(yacc[1]) ;
 switch $(yacc:D=:S=)
 {
-    case bison : yacc += -y -d --yacc ; # -t -l -v ;
+    case bison : yacc += -d --yacc ; # -t -l -v ;
     case yacc  : yacc += -d ;
 }
+
+if $(debug)
+{
+    yacc += -t -v ;
+}
+yacc += $(YACCFLAGS) ;
+
 rule .yacc
 {
     DEPENDS $(<) : $(>) ;