From 5e180ac61a7e73dc7681a2d34e6faf6908f14f6d Mon Sep 17 00:00:00 2001 From: Pieter Lexis Date: Wed, 26 May 2021 14:24:17 +0200 Subject: [PATCH] Update AX_CHECK_SIGN for autoconf 2.71 When running autoreconf with ax_check_sign.m4, autoconf 2.71 complains about the use of `AX_TRY_COMPILE`: ``` libtoolize: copying file 'm4/lt~obsolete.m4' configure.ac:29: warning: The macro `AC_TRY_COMPILE' is obsolete. configure.ac:29: You should run autoupdate. ./lib/autoconf/general.m4:2847: AC_TRY_COMPILE is expanded from... lib/m4sugar/m4sh.m4:692: _AS_IF_ELSE is expanded from... lib/m4sugar/m4sh.m4:699: AS_IF is expanded from... ./lib/autoconf/general.m4:2249: AC_CACHE_VAL is expanded from... ./lib/autoconf/general.m4:2270: AC_CACHE_CHECK is expanded from... m4/ax_check_sign.m4:41: AX_CHECK_SIGN is expanded from... m4/pdns_check_time_t.m4:1: PDNS_CHECK_TIME_T is expanded from... configure.ac:29: the top level ``` This updates the macro to use `AC_COMPILE_IFELSE`, which has been present in autoconf since at least version 2.60, released in 26 Jun 2006 (I did not check any older releases). This patch has been [submitted](http://savannah.gnu.org/patch/index.php?10071) [upstream](https://github.com/autoconf-archive/autoconf-archive/pull/225). --- m4/ax_check_sign.m4 | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) diff --git a/m4/ax_check_sign.m4 b/m4/ax_check_sign.m4 index bc2c3f034c..acc12624ed 100644 --- a/m4/ax_check_sign.m4 +++ b/m4/ax_check_sign.m4 @@ -35,16 +35,18 @@ # and this notice are preserved. This file is offered as-is, without any # warranty. -#serial 7 +#serial 8 AU_ALIAS([VL_CHECK_SIGN], [AX_CHECK_SIGN]) AC_DEFUN([AX_CHECK_SIGN], [ typename=`echo $1 | sed "s/@<:@^a-zA-Z0-9_@:>@/_/g"` AC_CACHE_CHECK([whether $1 is signed], ax_cv_decl_${typename}_signed, [ - AC_TRY_COMPILE([$4], - [ int foo @<:@ 1 - 2 * !((($1) -1) < 0) @:>@ ], + AC_COMPILE_IFELSE( + [AC_LANG_PROGRAM([[$4]], + [[ int foo @<:@ 1 - 2 * !((($1) -1) < 0) @:>@ ]])], [ eval "ax_cv_decl_${typename}_signed=\"yes\"" ], - [ eval "ax_cv_decl_${typename}_signed=\"no\"" ])]) + [ eval "ax_cv_decl_${typename}_signed=\"no\"" ]) + ]) symbolname=`echo $1 | sed "s/@<:@^a-zA-Z0-9_@:>@/_/g" | tr "a-z" "A-Z"` if eval "test \"\${ax_cv_decl_${typename}_signed}\" = \"yes\""; then $2 -- 2.47.2