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Bump minimum version of Bison to 2.3

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Since the retirement of some older buildfarm members, the oldest Bison
that gets regular testing is 2.3. MacOS ships that version, and will
continue doing so for the forseeable future because of Apple's policy
regarding GPLv3. While Mac users could use a package manager to install
a newer version, there is no compelling reason to force them do so at
this time.

Reviewed by Andres Freund
Discussion: https://www.postgresql.org/message-id/1097762.1662145681@sss.pgh.pa.us
This commit is contained in:
John Naylor
2022-09-06 11:41:58 +07:00
parent 96683db880
commit b086a47a27
13 changed files with 18 additions and 42 deletions
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8
config/programs.m4
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@ -22,8 +22,8 @@ fi
# PGAC_PATH_BISON
# ---------------
# Look for Bison, set the output variable BISON to its path if found.
# Reject versions before 1.875 (they have bugs or capacity limits).
# Note we do not accept other implementations of yacc.
# Reject versions before 2.3 (the earliest version in the buildfarm
# as of 2022). Note we do not accept other implementations of yacc.
AC_DEFUN([PGAC_PATH_BISON],
[PGAC_PATH_PROGS(BISON, bison)
@ -31,11 +31,11 @@ AC_DEFUN([PGAC_PATH_BISON],
if test "$BISON"; then
pgac_bison_version=`$BISON --version 2>/dev/null | sed q`
AC_MSG_NOTICE([using $pgac_bison_version])
if echo "$pgac_bison_version" | $AWK '{ if ([$]4 < 1.875) exit 0; else exit 1;}'
if echo "$pgac_bison_version" | $AWK '{ if ([$]4 < 2.3) exit 0; else exit 1;}'
then
AC_MSG_WARN([
*** The installed version of Bison, $BISON, is too old to use with PostgreSQL.
*** Bison version 1.875 or later is required, but this is $pgac_bison_version.])
*** Bison version 2.3 or later is required, but this is $pgac_bison_version.])
BISON=""
fi
# Bison >=3.0 issues warnings about %name-prefix="base_yy", instead