deal with aclocal(1)

This commit updates files so that aclocal.m4 generated by aclocal(1)
works well with our configure.ac

	* ac_checking.m4: merged back to configure.ac because
	  aclocal(1) cannot handle this macro.

	* ruby_append_options.m4: no longer used.

	* ruby_check_va_copy.m4: define using AC_DEFUN so that
	  aclocal(1) can find this macro.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@62243 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

aclocal.m4

@@ -13,7 +13,6 @@
 
 m4_ifndef([AC_CONFIG_MACRO_DIRS], [m4_defun([_AM_CONFIG_MACRO_DIRS], [])m4_defun([AC_CONFIG_MACRO_DIRS], [_AM_CONFIG_MACRO_DIRS($@)])])
 m4_include([tool/m4/_colorize_result_prepare.m4])
-m4_include([tool/m4/ac_checking.m4])
 m4_include([tool/m4/ac_msg_result.m4])
 m4_include([tool/m4/colorize_result.m4])
 m4_include([tool/m4/ruby_append_option.m4])
@@ -36,7 +35,6 @@ m4_include([tool/m4/ruby_dtrace_postprocess.m4])
 m4_include([tool/m4/ruby_func_attribute.m4])
 m4_include([tool/m4/ruby_mingw32.m4])
 m4_include([tool/m4/ruby_prepend_option.m4])
-m4_include([tool/m4/ruby_prepend_options.m4])
 m4_include([tool/m4/ruby_prog_gnu_ld.m4])
 m4_include([tool/m4/ruby_replace_type.m4])
 m4_include([tool/m4/ruby_rm_recursive.m4])

configure.ac

@@ -6,6 +6,13 @@ AC_CONFIG_MACRO_DIRS(tool/m4)
 
 AC_PREREQ(2.67)
 
+dnl   override AC_CHECKING
+dnl   placed here due to aclocal(1)'s
+dnl   ignoring this definition in separate files
+AC_DEFUN([AC_CHECKING],[dnl
+AC_REQUIRE([_COLORIZE_RESULT_PREPARE])dnl
+AS_MESSAGE([checking ${msg_checking}$1${msg_reset}...])])dnl
+
 AC_DISABLE_OPTION_CHECKING
 
 AC_ARG_VAR([cflags], [additional CFLAGS])

tool/m4/ac_checking.m4

@@ -1,4 +0,0 @@
-# -*- Autoconf -*-
-AC_DEFUN([AC_CHECKING],[dnl
-AC_REQUIRE([_COLORIZE_RESULT_PREPARE])dnl
-AS_MESSAGE([checking ${msg_checking}$1${msg_reset}...])])dnl

tool/m4/ruby_check_va_copy.m4

@@ -1,5 +1,5 @@
 # -*- Autoconf -*-
-m4_define(RUBY_CHECK_VA_COPY, [
+AC_DEFUN([RUBY_CHECK_VA_COPY], [
     if test "x$rb_cv_va_copy" = x; then
         AC_TRY_RUN(
 [#include <stdlib.h>

tool/m4/ruby_prepend_options.m4

@@ -1,8 +0,0 @@
-# -*- Autoconf -*-
-AC_DEFUN([RUBY_PREPEND_OPTIONS],
-	[# RUBY_PREPEND_OPTIONS($1)
-	unset rb_opts; for rb_opt in $2; do
-	AS_CASE([" [$]{rb_opts} [$]{$1-} "],
-	[*" [$]{rb_opt} "*], [], ['  '], [ $1="[$]{rb_opt}"], [ rb_opts="[$]{rb_opts}[$]{rb_opt} "])
-	done
-	$1="[$]{rb_opts}[$]$1"])dnl