configure: Modernize AC_CONFIG_HEADER. [skip appveyor]

This works with Autoconf 2.69 and squelches another warning from
Autoconf 2.71.  Lose an empty optional arument to AC_CONFIG_COMMANDS
while at it.

diff --git a/configure b/configure
index 26de4db603c67c34a8365de82444cf52321903db..8ebb37e54606ada60dfc9ebc8aff5768394db858 100755 (executable)
--- a/configure
+++ b/configure
@@ -9118,11 +9118,6 @@ _ASBOX
 
 _ACEOF
 cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
-#
-# INIT-COMMANDS
-#
-
-
 _ACEOF
 
 cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1

diff --git a/configure.ac b/configure.ac
index c71083de51900b94ca71e8ea5a59e8fb0b37de1d..fccebbcd0741929c1e63fe53e604cd9ebeb88721 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -1044,13 +1044,13 @@ AC_SUBST(MAN_MISC_INFO)
 
 AC_PROG_INSTALL
 
-AC_CONFIG_HEADER(config.h)
+AC_CONFIG_HEADERS([config.h])
 
 AC_CONFIG_COMMANDS([.devel],[[if test -f .devel; then
        echo timestamp > stamp-h
        cat $srcdir/Makefile-devel-adds >> Makefile
        make depend || exit 1
-fi]],[[]])
+fi]])
 AC_CONFIG_FILES([Makefile tcpdump.1])
 AC_OUTPUT
 exit 0