We have had AC_PREREQ([2.69]) in our own configure.ac since 2021, and before that it was AC_PREREQ([2.62]) since 2012, so backcompat code for 2.61 is not necessary anymore.
Also add logging of the name of each candidate executable and bump the serial number. --- m4/m4.m4 | 13 +++---------- 1 file changed, 3 insertions(+), 10 deletions(-) diff --git a/m4/m4.m4 b/m4/m4.m4 index 66e7341f..42612162 100644 --- a/m4/m4.m4 +++ b/m4/m4.m4 @@ -1,4 +1,4 @@ -# m4.m4 serial 12 +# m4.m4 serial 13 # Copyright (C) 2000, 2006-2017, 2020-2022 Free Software Foundation, # Inc. @@ -41,6 +41,8 @@ AC_PATH_PROGS_FEATURE_CHECK([M4], [m4 gm4 gnum4], ac_snip2=change'quote(<,>)def''ine(<T>,<>)d'nl ac_snip2=${ac_snip2}${as_nl}def'ine(<F>,<T(<traced>)>)d'nl ac_snip2=${ac_snip2}${as_nl}m4'wrap(<F>)d'nl + AS_ECHO("$as_me:${as_lineno-$LINENO}: trying $ac_path_M4") \ + >&AS_MESSAGE_LOG_FD test -z "`$ac_path_M4 -F conftest.m4f </dev/null 2>&1`" \ && test -z "`AS_ECHO([$ac_snippet]) | $ac_path_M4 --trace=mac 2>&1`" \ && test -f conftest.m4f \ @@ -80,12 +82,3 @@ Glibc 2.9 - 2.12 and GNU M4 1.4.11 - 1.4.15 have another strstr bug.])])]) esac]) AC_SUBST([M4_DEBUGFILE], [$ac_cv_prog_gnu_m4_debugfile]) ]) - -# Compatibility for bootstrapping with Autoconf 2.61. -dnl FIXME - replace this with AC_PREREQ([2.62]) after the release. -# AC_PATH_PROGS_FEATURE_CHECK was added the same time the slightly broken, -# undocumented _AC_PATH_PROG_FEATURE_CHECK was deleted. -m4_ifndef([AC_PATH_PROGS_FEATURE_CHECK], - [m4_define([AC_PATH_PROGS_FEATURE_CHECK], - [_AC_PATH_PROG_FEATURE_CHECK([$1], [$2], [$3], [$5]) -])]) -- 2.36.1