Changes to m4/configure.ac,v [branch-1_4]

[Eric Blake]

CVSROOT:        /sources/m4
Module name:    m4
Branch:         branch-1_4
Changes by:     Eric Blake <ericb>      06/06/24 22:53:35

Index: configure.ac
===================================================================
RCS file: /sources/m4/m4/configure.ac,v
retrieving revision 1.36.2.16
retrieving revision 1.36.2.17
diff -u -b -r1.36.2.16 -r1.36.2.17
--- configure.ac        22 Jun 2006 14:55:48 -0000      1.36.2.16
+++ configure.ac        24 Jun 2006 22:53:35 -0000      1.36.2.17
@@ -17,7 +17,7 @@
 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
 # 02110-1301  USA
 
-AC_PREREQ([2.59])
+AC_PREREQ([2.60])
 AC_INIT([GNU M4], [1.4.4c], address@hidden)
 AM_INIT_AUTOMAKE([1.9.6 dist-bzip2 gnu])
 PACKAGE=$PACKAGE_TARNAME; AC_SUBST([PACKAGE])
@@ -32,7 +32,7 @@
 AC_PROG_CC
 M4_EARLY
 
-AC_CHECK_HEADERS([limits.h siginfo.h])
+AC_CHECK_HEADERS_ONCE([limits.h siginfo.h])
 AC_CHECK_TYPES([siginfo_t], [], [],
 [[#include <signal.h>
 #if HAVE_SIGINFO_H
@@ -46,7 +46,7 @@
 AC_TYPE_SIGNAL
 AC_TYPE_SIZE_T
 
-AC_CHECK_FUNCS([sigaction sigaltstack sigstack sigvec strerror tmpfile])
+AC_CHECK_FUNCS_ONCE([sigaction sigaltstack sigstack sigvec strerror tmpfile])
 
 M4_INIT