glass	2017-09-30 15:30:44 +0900 (Sat, 30 Sep 2017)

  New Revision: 60068

  https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=60068

  Log:
    configure.ac: use m4_version_prereq
    
    * configure.ac: use m4_version_prereq to check
      running autoconf version.

  Modified files:
    trunk/configure.ac
Index: configure.ac
===================================================================
--- configure.ac	(revision 60067)
+++ configure.ac	(revision 60068)
@@ -16,11 +16,9 @@ AC_ARG_VAR([cppflags], [additional CPPFL https://github.com/ruby/ruby/blob/trunk/configure.ac#L16
 AC_ARG_VAR([cxxflags], [additional CXXFLAGS])
 
 AC_DEFUN([RUBY_RM_RECURSIVE], [
-m4_if(m4_version_compare(m4_defn([m4_PACKAGE_VERSION]), [2.70]), [-1], [
+m4_version_prereq([2.70], [-1], [
 # suppress error messages, rm: cannot remove 'conftest.dSYM', from
 # AC_EGREP_CPP with CFLAGS=-g on Darwin.
-#
-# TODO: remove this hack when AC_PREREQ() becomes 2.70 or later.
 AS_CASE([$build_os], [darwin*], [
 rm() {
     rm_recursive=''

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