gnulib: update

[bison.git] / configure.ac

diff --git a/configure.ac b/configure.ac
index 992e2033994c54ce40d4a9fcb9cd08cd2d5e83be..688803af2363b4d9a8545a6f3c52b21a549e29b9 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -82,7 +82,7 @@ AC_ARG_ENABLE([gcc-warnings],
  esac],
               [enable_gcc_warnings=no])
 if test "$enable_gcc_warnings" = yes; then
-  warn_common='-Wall -Wextra -Wno-sign-compare -Wcast-align
+  warn_common='-Wall-Wextra -Wno-sign-compare -Wcast-align -Wdocumentation
     -Wformat -Wpointer-arith -Wwrite-strings'
   warn_c='-Wbad-function-cast -Wshadow -Wstrict-prototypes'
   warn_cxx='-Wnoexcept'
@@ -161,16 +161,7 @@ AC_ARG_ENABLE([yacc],
   [AC_HELP_STRING([--disable-yacc],
      [do not build a yacc command or an -ly library])],
   , [enable_yacc=yes])
-case $enable_yacc in
-yes)
-  YACC_SCRIPT=src/yacc
-  YACC_LIBRARY=lib/liby.a;;
-*)
-  YACC_SCRIPT=
-  YACC_LIBRARY=;;
-esac
-AC_SUBST([YACC_SCRIPT])
-AC_SUBST([YACC_LIBRARY])
+AM_CONDITIONAL([ENABLE_YACC], [test "$enable_yacc" = yes])
 
 # Checks for programs.
 AM_MISSING_PROG([DOT], [dot])
@@ -179,6 +170,8 @@ $LEX_IS_FLEX || test "X$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