Commit 73f1be5e42e3 to autoconf has introduced an argument to AC_PROG_LEX. Invocation without the argument has been treated as obsolete since then.
* m4/lex.m4: pass the required argument to AC_PROG_LEX * doc/automake.texi: Describe it. * NEWS: Mention it --- NEWS | 2 ++ doc/automake.texi | 5 +++-- m4/lex.m4 | 6 +++--- 3 files changed, 8 insertions(+), 5 deletions(-) I sent v1[1] by mistake to autoconf-patc...@gnu.org where Zack Weinberg sent[2] some suggestions. [1] https://lists.gnu.org/archive/html/autoconf-patches/2023-08/msg00002.html [2] https://lists.gnu.org/archive/html/autoconf-patches/2023-08/msg00003.html diff --git a/NEWS b/NEWS index ced0fd640..78162b746 100644 --- a/NEWS +++ b/NEWS @@ -57,6 +57,8 @@ New in 1.17: - tests: avoid some declaration conflicts for lex et al. on SunOS. + - Pass options AC_PROG_LEX requires + * Obsolescent features: - py-compile no longer supports Python 0.x or 1.x versions. Python 2.0, diff --git a/doc/automake.texi b/doc/automake.texi index d14b769fd..61b7fd095 100644 --- a/doc/automake.texi +++ b/doc/automake.texi @@ -4130,7 +4130,7 @@ Automake 1.14, the @code{AC_PROG_CC} is rewritten to implement such checks itself, and thus the explicit use of @code{AM_PROG_CC_C_O} should no longer be required. -@item AM_PROG_LEX +@item AM_PROG_LEX(@var{options}) @acindex AM_PROG_LEX @acindex AC_PROG_LEX @cindex HP-UX 10, @command{lex} problems @@ -4138,7 +4138,8 @@ should no longer be required. Like @code{AC_PROG_LEX} (@pxref{Particular Programs, , Particular Program Checks, autoconf, The Autoconf Manual}), but uses the @command{missing} script on systems that do not have @command{lex}. -HP-UX 10 is one such system. +HP-UX 10 is one such system. @var{options} are passed directly to +@code{AC_PROG_LEX}. @item AM_PROG_GCJ @acindex AM_PROG_GCJ diff --git a/m4/lex.m4 b/m4/lex.m4 index 7b0511526..e9a8485d6 100644 --- a/m4/lex.m4 +++ b/m4/lex.m4 @@ -6,14 +6,14 @@ # gives unlimited permission to copy and/or distribute it, # with or without modifications, as long as this notice is preserved. -# AM_PROG_LEX -# ----------- +# AM_PROG_LEX(OPTIONS) +# -------------------- # Autoconf leaves LEX=: if lex or flex can't be found. Change that to a # "missing" invocation, for better error output. AC_DEFUN([AM_PROG_LEX], [AC_PREREQ([2.50])dnl AC_REQUIRE([AM_MISSING_HAS_RUN])dnl -AC_REQUIRE([AC_PROG_LEX])dnl +AC_PROVIDE_IFELSE([AC_PROG_LEX], [], [AC_PROG_LEX($@)])dnl if test "$LEX" = :; then LEX=${am_missing_run}flex fi]) -- 2.30.2