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[PATCH 3/5] build: examples/calc++/calc++ requires flex


From: Paul Eggert
Subject: [PATCH 3/5] build: examples/calc++/calc++ requires flex
Date: Mon, 21 Oct 2013 15:27:05 -0700
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.0

* configure.ac (FLEX_CXX_WORKS): New AM_CONDITIONAL.
* examples/calc++/local.mk (examples/calc++/calc++):
Build if FLEX_CXX_WORKS, not BISON_CXX_WORKS.
---
 configure.ac             | 2 ++
 examples/calc++/local.mk | 2 +-
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/configure.ac b/configure.ac
index 992e203..2843b67 100644
--- a/configure.ac
+++ b/configure.ac
@@ -179,6 +179,8 @@ $LEX_IS_FLEX || test "X$LEX" = X: || {
   AC_MSG_WARN([bypassing lex because flex is required])
   LEX=:
 }
+AM_CONDITIONAL([FLEX_CXX_WORKS],
+  [$LEX_IS_FLEX && test $bison_cv_cxx_works = yes])
 AC_PROG_YACC
 AC_PROG_RANLIB
 AC_PROG_GNU_M4
diff --git a/examples/calc++/local.mk b/examples/calc++/local.mk
index d1d43a0..493b8c7 100644
--- a/examples/calc++/local.mk
+++ b/examples/calc++/local.mk
@@ -63,7 +63,7 @@ calc_sources =                                  \
   $(calc_sources_extracted)                     \
   $(calc_sources_generated)
 
-if BISON_CXX_WORKS
+if FLEX_CXX_WORKS
 check_PROGRAMS += examples/calc++/calc++
 nodist_examples_calc___calc___SOURCES =         \
   $(calc_sources)
-- 
1.8.3.1





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