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build: use -Wno-yacc on bison 3.3+

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we only support bison, we don't care about yacc compatibility.

Signed-off-by: David Lamparter <equinox@diac24.net>
This commit is contained in:
David Lamparter 2019-06-04 14:23:29 +02:00
parent 2655e41fa2
commit 1af5b6d9a3
1 changed files with 9 additions and 3 deletions
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12
configure.ac
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@ -1859,7 +1859,7 @@ AC_MSG_CHECKING([version of bison])
frr_ac_bison_version="$(eval $YACC -V | grep bison | head -n 1)"
frr_ac_bison_version="${frr_ac_bison_version##* }"
frr_ac_bison_missing="false"
case "x${frr_ac_bison_version}" in
case "x${frr_ac_bison_version}x" in
x2.7*)
BISON_OPENBRACE='"'
BISON_CLOSEBRACE='"'
@ -1876,11 +1876,17 @@ case "x${frr_ac_bison_version}" in
AC_MSG_WARN([could not determine bison version. Please install GNU bison 2.7.x or newer.])
frr_ac_bison_missing="true"
;;
*)
x3.[012][^0-9]*)
BISON_OPENBRACE='{'
BISON_CLOSEBRACE='}'
BISON_VERBOSE='-Dparse.error=verbose'
AC_MSG_RESULT([$frr_ac_bison_version - 3.0 or newer])
AC_MSG_RESULT([$frr_ac_bison_version - 3.0 to 3.2])
;;
*)
BISON_OPENBRACE='{'
BISON_CLOSEBRACE='}'
BISON_VERBOSE='-Dparse.error=verbose -Wno-yacc'
AC_MSG_RESULT([$frr_ac_bison_version - 3.3 or newer])
;;
esac
AC_SUBST([BISON_OPENBRACE])