From a405fc138596f552581d2011fd6de02d5c8186c4 Mon Sep 17 00:00:00 2001 From: RincewindsHat <12514511+RincewindsHat@users.noreply.github.com> Date: Wed, 17 Nov 2021 01:05:54 +0100 Subject: Sync with the latest Gnulib code (1a268176f) --- gl/m4/getprogname.m4 | 43 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 43 insertions(+) create mode 100644 gl/m4/getprogname.m4 (limited to 'gl/m4/getprogname.m4') diff --git a/gl/m4/getprogname.m4 b/gl/m4/getprogname.m4 new file mode 100644 index 00000000..65917d6a --- /dev/null +++ b/gl/m4/getprogname.m4 @@ -0,0 +1,43 @@ +# getprogname.m4 - check for getprogname or replacements for it + +# Copyright (C) 2016-2021 Free Software Foundation, Inc. +# This file is free software; the Free Software Foundation +# gives unlimited permission to copy and/or distribute it, +# with or without modifications, as long as this notice is preserved. + +# serial 4 + +AC_DEFUN([gl_FUNC_GETPROGNAME], +[ + AC_CHECK_FUNCS_ONCE([getprogname getexecname]) + AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS]) + ac_found=0 + AC_CHECK_DECLS([program_invocation_name], [ac_found=1], [], + [#include ]) + AC_CHECK_DECLS([program_invocation_short_name], [ac_found=1], [], + [#include ]) + AC_CHECK_DECLS([__argv], [ac_found=1], [], [#include ]) + + # Incur the cost of this test only if none of the above worked. + if test $ac_found = 0; then + # On OpenBSD 5.1, using the global __progname variable appears to be + # the only way to implement getprogname. + AC_CACHE_CHECK([whether __progname is defined in default libraries], + [gl_cv_var___progname], + [ + gl_cv_var___progname= + AC_LINK_IFELSE( + [AC_LANG_PROGRAM( + [[extern char *__progname;]], + [[return *__progname;]] + )], + [gl_cv_var___progname=yes] + ) + ] + ) + if test "$gl_cv_var___progname" = yes; then + AC_DEFINE([HAVE_VAR___PROGNAME], 1, + [Define if you have a global __progname variable]) + fi + fi +]) -- cgit v1.2.3-74-g34f1