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authorPeter Eisentraut2025-01-17 07:35:52 +0000
committerPeter Eisentraut2025-01-17 08:30:42 +0000
commit0869ea43e9c2257819e5c8719e28fe3b5c527911 (patch)
tree267b1f13959c6350cf2169b040581b67222c6104 /configure
parentb0eff1098860f88dd385e6882ff7b1063d267213 (diff)
Remove flex version checks
Remove the flex version checks from configure and meson. The cutoff versions are all so ancient that this is no longer relevant, and what the actual cutoff should be is a bit fuzzy. This also removes the ancient behavior that configure would also accept a "lex" program if it is actuall flex. This aligns the check with meson in this respect. For future reference, as of this commit, these are relevant flex versions: - The hard required minimum is flex 2.5.34 as of commit b1ef48980dd, but this has not actually been tested. - Prior to this, the minimum enforced by configure/meson was flex 2.5.35, which is the oldest present in the buildfarm right now. - As of commit 6fdd5d95634, the oldest version that will compile without warnings due to flex-generated code is flex 2.5.36. - The oldest version that probably still has some practical relevance is flex 2.5.37, which ships with CentOS/RHEL 7. Discussion: https://www.postgresql.org/message-id/[email protected]
Diffstat (limited to 'configure')
-rwxr-xr-xconfigure97
1 files changed, 53 insertions, 44 deletions
diff --git a/configure b/configure
index a0b5e10ca39..ceeef9b0915 100755
--- a/configure
+++ b/configure
@@ -9931,59 +9931,68 @@ if test -z "$BISON"; then
fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for flex" >&5
-$as_echo_n "checking for flex... " >&6; }
-if ${pgac_cv_path_flex+:} false; then :
+if test -z "$FLEX"; then
+ for ac_prog in flex
+do
+ # Extract the first word of "$ac_prog", so it can be a program name with args.
+set dummy $ac_prog; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_path_FLEX+:} false; then :
$as_echo_n "(cached) " >&6
else
- # Let the user override the test
-if test -n "$FLEX"; then
- pgac_cv_path_flex=$FLEX
-else
- pgac_save_IFS=$IFS
- IFS=$PATH_SEPARATOR
- for pgac_dir in $PATH; do
- IFS=$pgac_save_IFS
- if test -z "$pgac_dir" || test x"$pgac_dir" = x"."; then
- pgac_dir=`pwd`
- fi
- for pgac_prog in flex lex; do
- pgac_candidate="$pgac_dir/$pgac_prog"
- if test -f "$pgac_candidate" \
- && $pgac_candidate --version </dev/null >/dev/null 2>&1
- then
- 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 && $3 >= 35))) exit 0; else exit 1;}'
- then
- pgac_cv_path_flex=$pgac_candidate
- break 2
- else
- as_fn_error $? "
-*** The installed version of Flex, $pgac_candidate, is too old to use with PostgreSQL.
-*** Flex version 2.5.35 or later is required, but this is $pgac_flex_version." "$LINENO" 5
- fi
- fi
- fi
- done
+ case $FLEX in
+ [\\/]* | ?:[\\/]*)
+ ac_cv_path_FLEX="$FLEX" # Let the user override the test with a path.
+ ;;
+ *)
+ as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+ IFS=$as_save_IFS
+ test -z "$as_dir" && as_dir=.
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+ ac_cv_path_FLEX="$as_dir/$ac_word$ac_exec_ext"
+ $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+ break 2
+ fi
+done
done
- rm -f conftest.l lex.yy.c
- : ${pgac_cv_path_flex=no}
+IFS=$as_save_IFS
+
+ ;;
+esac
+fi
+FLEX=$ac_cv_path_FLEX
+if test -n "$FLEX"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $FLEX" >&5
+$as_echo "$FLEX" >&6; }
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
fi
+
+ test -n "$FLEX" && break
+done
+
+else
+ # Report the value of FLEX in configure's output in all cases.
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking for FLEX" >&5
+$as_echo_n "checking for FLEX... " >&6; }
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $FLEX" >&5
+$as_echo "$FLEX" >&6; }
fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $pgac_cv_path_flex" >&5
-$as_echo "$pgac_cv_path_flex" >&6; }
-if test x"$pgac_cv_path_flex" = x"no"; then
+
+if test -z "$FLEX"; then
as_fn_error $? "flex not found" "$LINENO" 5
-else
- FLEX=$pgac_cv_path_flex
- pgac_flex_version=`$FLEX --version 2>/dev/null`
- { $as_echo "$as_me:${as_lineno-$LINENO}: using $pgac_flex_version" >&5
-$as_echo "$as_me: using $pgac_flex_version" >&6;}
fi
+pgac_flex_version=`$FLEX --version 2>/dev/null`
+{ $as_echo "$as_me:${as_lineno-$LINENO}: using $pgac_flex_version" >&5
+$as_echo "$as_me: using $pgac_flex_version" >&6;}
+