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build: examples/calc++/calc++ requires flex

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* configure.ac (FLEX_CXX_WORKS): New AM_CONDITIONAL.
* examples/calc++/local.mk (examples/calc++/calc++):
Build if FLEX_CXX_WORKS, not BISON_CXX_WORKS.
This commit is contained in:
Paul Eggert
2013-10-21 15:16:43 -07:00
parent a9733794bb
commit 3a684d611e
2 changed files with 3 additions and 1 deletions
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2
configure.ac
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@@ -179,6 +179,8 @@ $LEX_IS_FLEX || test "X$LEX" = X: || {
AC_MSG_WARN([bypassing lex because flex is required]) AC_MSG_WARN([bypassing lex because flex is required])
LEX=: LEX=:
} }
AM_CONDITIONAL([FLEX_CXX_WORKS],
[$LEX_IS_FLEX && test $bison_cv_cxx_works = yes])
AC_PROG_YACC AC_PROG_YACC
AC_PROG_RANLIB AC_PROG_RANLIB
AC_PROG_GNU_M4 AC_PROG_GNU_M4

2
examples/calc++/local.mk
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@@ -63,7 +63,7 @@ calc_sources = \
$(calc_sources_extracted) \ $(calc_sources_extracted) \
$(calc_sources_generated) $(calc_sources_generated)
if BISON_CXX_WORKS if FLEX_CXX_WORKS
check_PROGRAMS += examples/calc++/calc++ check_PROGRAMS += examples/calc++/calc++
nodist_examples_calc___calc___SOURCES = \ nodist_examples_calc___calc___SOURCES = \
$(calc_sources) $(calc_sources)