diff options
Diffstat (limited to 'config/programs.m4')
| -rw-r--r-- | config/programs.m4 | 10 |
1 files changed, 4 insertions, 6 deletions
diff --git a/config/programs.m4 b/config/programs.m4 index bcdfbc3a51..ce83155592 100644 --- a/config/programs.m4 +++ b/config/programs.m4 @@ -65,10 +65,8 @@ AC_SUBST(BISONFLAGS) # PGAC_PATH_FLEX # -------------- # Look for Flex, set the output variable FLEX to its path if found. -# Reject versions before 2.5.31, as we need a reasonably non-buggy reentrant -# scanner. (Note: the well-publicized security problem in 2.5.31 does not -# affect Postgres, and there are still distros shipping patched 2.5.31, -# so allow it.) Also find Flex if its installed under `lex', but do not +# Reject versions before 2.5.35 (the earliest version in the buildfarm +# as of 2022). Also find Flex if its installed under `lex', but do not # accept other Lex programs. AC_DEFUN([PGAC_PATH_FLEX], @@ -92,14 +90,14 @@ else echo '%%' > conftest.l if $pgac_candidate -t conftest.l 2>/dev/null | grep FLEX_SCANNER >/dev/null 2>&1; then pgac_flex_version=`$pgac_candidate --version 2>/dev/null` - if echo "$pgac_flex_version" | sed ['s/[.a-z]/ /g'] | $AWK '{ if ([$]1 == 2 && ([$]2 > 5 || ([$]2 == 5 && [$]3 >= 31))) exit 0; else exit 1;}' + if echo "$pgac_flex_version" | sed ['s/[.a-z]/ /g'] | $AWK '{ if ([$]1 == 2 && ([$]2 > 5 || ([$]2 == 5 && [$]3 >= 35))) exit 0; else exit 1;}' then pgac_cv_path_flex=$pgac_candidate break 2 else AC_MSG_WARN([ *** The installed version of Flex, $pgac_candidate, is too old to use with PostgreSQL. -*** Flex version 2.5.31 or later is required, but this is $pgac_flex_version.]) +*** Flex version 2.5.35 or later is required, but this is $pgac_flex_version.]) fi fi fi |