Remove obsolete macros from several modules. * m4/c-stack.m4 (AC_SYS_XSI_STACK_OVERFLOW_HEURISTIC): Replace obsolete Autoconf macros with their modern counterparts. * m4/check-math-lib.m4 (gl_CHECK_MATH_LIB): Likewise. * m4/gc-camellia.m4 (gl_GC_CAMELLIA): Likewise. * m4/getaddrinfo.m4 (gl_GETADDRINFO): Likewise. * m4/getdate.m4 (gl_C_COMPOUND_LITERALS): Likewise. * m4/gethostname.m4 (gl_FUNC_GETHOSTNAME): Likewise. * m4/getline.m4 (gl_FUNC_GETLINE): Likewise. * m4/getopt.m4 (gl_GETOPT_CHECK_HEADERS): Likewise. * m4/isfinite.m4 (gl_ISFINITEL_WORKS): Likewise. * m4/poll.m4 (gl_FUNC_POLL): Likewise. * m4/readline.m4 (gl_FUNC_READLINE): Likewise. * m4/round.m4 (gl_FUNC_ROUND): Likewise. * m4/roundf.m4 (gl_FUNC_ROUNDF): Likewise. * m4/select.m4 (gl_FUNC_SELECT): Likewise. * m4/sockets.m4 (gl_SOCKETS): Likewise. * m4/socklen.m4 (gl_TYPE_SOCKLEN_T): Likewise. * m4/sockpfaf.m4 (gl_SOCKET_FAMILIES): Likewise. * m4/sysexits.m4 (gl_SYSEXITS): Likewise. * m4/time_r.m4 (gl_TIME_R): Likewise. * m4/tsearch.m4 (gl_FUNC_TSEARCH): Likewise. * m4/vararrays.m4 (AC_C_VARARRAYS): Likewise. * m4/wctype.m4 (gl_WCTYPE_H): Likewise. Signed-off-by: Ralf Wildenhues <Ralf.Wildenhues@gmx.de>

--- a/m4/getopt.m4
+++ b/m4/getopt.m4
@@ -1,4 +1,4 @@
-# getopt.m4 serial 21
+# getopt.m4 serial 22
 dnl Copyright (C) 2002-2006, 2008-2009 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -82,7 +82,7 @@
       [gl_cv_func_getopt_posix],
       [
         dnl This test fails on mingw and succeeds on all other platforms.
-        AC_TRY_RUN([
+        AC_RUN_IFELSE([AC_LANG_SOURCE([[
 #include <unistd.h>
 #include <stdlib.h>
 #include <string.h>
@@ -158,7 +158,7 @@
 
   return 0;
 }
-],
+]])],
           [gl_cv_func_getopt_posix=yes], [gl_cv_func_getopt_posix=no],
           [case "$host_os" in
              mingw*) gl_cv_func_getopt_posix="guessing no";;