Update for autoconf 2.70

Author: nobu

configure.ac

@@ -8,18 +8,18 @@ AC_CACHE_CHECK(for __builtin_setjmp, ac_cv_func___builtin_setjmp,
     ac_cv_func___builtin_setjmp=no
     for cast in "" "(void **)"; do
 	RUBY_WERROR_FLAG(
-	[AC_TRY_LINK([@%:@include <setjmp.h>
+	[AC_LINK_IFELSE([AC_LANG_PROGRAM([[@%:@include <setjmp.h>
 	    @%:@include <stdio.h>
 	    jmp_buf jb;
 	    @%:@ifdef NORETURN
 	    NORETURN(void t(void));
 	    @%:@endif
 	    void t(void) {__builtin_longjmp($cast jb, 1);}
-	    int jump(void) {(void)(__builtin_setjmp($cast jb) ? 1 : 0); return 0;}],
-	    [
+	    int jump(void) {(void)(__builtin_setjmp($cast jb) ? 1 : 0); return 0;}]],
+	    [[
 	    void (*volatile f)(void) = t;
 	    if (!jump()) printf("%d\n", f != 0);
-	    ],
+	    ]])],
 	    [ac_cv_func___builtin_setjmp="yes with cast ($cast)"])
 	])
 	test "$ac_cv_func___builtin_setjmp" = no || break

tool/m4/ruby_check_builtin_setjmp.m4

@@ -4,8 +4,7 @@ AC_CACHE_CHECK([for printf prefix for $1], [rb_cv_pri_prefix_]AS_TR_SH($1),[
     [rb_cv_pri_prefix_]AS_TR_SH($1)=[NONE]
     RUBY_WERROR_FLAG(RUBY_APPEND_OPTIONS(CFLAGS, $rb_cv_wsuppress_flags)
     for pri in $2; do
-        AC_TRY_COMPILE(
-            [@%:@include <stdio.h>
+        AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[@%:@include <stdio.h>
 	    @%:@include <stddef.h>
             @%:@ifdef __GNUC__
             @%:@if defined __MINGW_PRINTF_FORMAT
@@ -18,9 +17,9 @@ AC_CACHE_CHECK([for printf prefix for $1], [rb_cv_pri_prefix_]AS_TR_SH($1),[
             @%:@else
             @%:@define PRINTF_ARGS(decl, string_index, first_to_check) decl
             @%:@endif
-	    PRINTF_ARGS(void test_sprintf(const char*, ...), 1, 2);],
-            [printf("%]${pri}[d", (]$1[)42);
-            test_sprintf("%]${pri}[d", (]$1[)42);],
+	    PRINTF_ARGS(void test_sprintf(const char*, ...), 1, 2);]],
+            [[printf("%]${pri}[d", (]$1[)42);
+             test_sprintf("%]${pri}[d", (]$1[)42);]])],
             [rb_cv_pri_prefix_]AS_TR_SH($1)[=[$pri]; break])
     done)])
 AS_IF([test "[$rb_cv_pri_prefix_]AS_TR_SH($1)" != NONE], [

tool/m4/ruby_check_printf_prefix.m4

@@ -2,14 +2,14 @@
 # used for AC_ARG_WITH(setjmp-type)
 AC_DEFUN([RUBY_CHECK_SETJMP], [
 AC_CACHE_CHECK([for ]$1[ as a macro or function], ac_cv_func_$1,
-  [AC_TRY_COMPILE([
+  [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
 @%:@include <setjmp.h>
 ]AC_INCLUDES_DEFAULT([$3])[
 @%:@define JMPARGS_1 env
 @%:@define JMPARGS_2 env,1
 @%:@define JMPARGS JMPARGS_]m4_ifval($2,2,1)[
-],
-    m4_ifval($2,$2,jmp_buf)[ env; $1(JMPARGS);],
+]],
+    [m4_ifval($2,$2,jmp_buf)[ env; $1(JMPARGS);]])],
     ac_cv_func_$1=yes,
     ac_cv_func_$1=no)]
 )

tool/m4/ruby_check_setjmp.m4

@@ -1,9 +1,9 @@
 # -*- Autoconf -*-
 AC_DEFUN([RUBY_CHECK_SYSCONF], [dnl
 AC_CACHE_CHECK([whether _SC_$1 is supported], rb_cv_have_sc_[]m4_tolower($1),
-  [AC_TRY_COMPILE([#include <unistd.h>
-    ],
-    [_SC_$1 >= 0],
+  [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <unistd.h>
+      ]],
+      [[_SC_$1 >= 0]])],
     rb_cv_have_sc_[]m4_tolower($1)=yes,
     rb_cv_have_sc_[]m4_tolower($1)=no)
   ])

tool/m4/ruby_check_sysconf.m4

@@ -4,8 +4,8 @@ AC_DEFUN([RUBY_CPPOUTFILE],
 [save_CPPFLAGS="$CPPFLAGS"
 CPPFLAGS='-o conftest-1.i'
 rb_cv_cppoutfile=no
-AC_TRY_CPP([test-for-cppout],
-	   [grep test-for-cppout conftest-1.i > /dev/null && rb_cv_cppoutfile=yes])
+AC_PREPROC_IFELSE([AC_LANG_SOURCE([[test-for-cppout]])],
+                  [grep test-for-cppout conftest-1.i > /dev/null && rb_cv_cppoutfile=yes])
 CPPFLAGS="$save_CPPFLAGS"
 rm -f conftest*])
 AS_IF([test "$rb_cv_cppoutfile" = yes], [

tool/m4/ruby_cppoutfile.m4

@@ -21,7 +21,7 @@ for mac in \
     "__declspec(attrib_code) x" \
     x; do
   m4_ifval([$4],mac="$mac"${rbcv_cond+" /* only if $rbcv_cond */"})
-  AC_TRY_COMPILE(
+  AC_COMPILE_IFELSE([AC_LANG_PROGRAM([
     m4_ifval([$4],${rbcv_cond+[@%:@if ]$rbcv_cond})
 [@%:@define ]attrib[](attrib_params)[ $mac]
 m4_ifval([$4],${rbcv_cond+[@%:@else]}
@@ -30,7 +30,7 @@ ${rbcv_cond+[@%:@endif]})
 $6
 @%:@define mesg ("")
 @%:@define san "address"
-    attrib[](attrib_params)[;], [],
+    attrib[](attrib_params)[;]], [[]])],
     [rbcv="$mac"; break])
 done
 ])])

tool/m4/ruby_decl_attribute.m4

@@ -7,7 +7,7 @@ AC_DEFUN([RUBY_DTRACE_AVAILABLE],
     AS_FOR(opt, rb_dtrace_opt, ["-xnolibs" ""], [dnl
 	AS_IF([$DTRACE opt -h -o conftest_provider.h -s conftest_provider.d >/dev/null 2>/dev/null],
 	    [], [continue])
-	AC_TRY_COMPILE([@%:@include "conftest_provider.h"], [CONFTEST_FIRE();],
+	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[@%:@include "conftest_provider.h"]], [[CONFTEST_FIRE();]])],
 	    [], [continue])
 	# DTrace is available on the system
 	rb_cv_dtrace_available=yes${rb_dtrace_opt:+"(opt)"}

tool/m4/ruby_dtrace_available.m4

@@ -12,7 +12,7 @@ _PROBES
     $DTRACE ${DTRACE_OPT} -h -o conftest_provider.h -s conftest_provider.d >/dev/null 2>/dev/null &&
     :
   }], [
-    AC_TRY_COMPILE([@%:@include "conftest_provider.h"], [CONFTEST_FIRE();], [
+    AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[@%:@include "conftest_provider.h"]], [[CONFTEST_FIRE();]])],[
 	AS_IF([{
 	    cp -p conftest.${ac_objext} conftest.${ac_objext}.save &&
 	    $DTRACE ${DTRACE_OPT} -G -s conftest_provider.d conftest.${ac_objext} 2>/dev/null &&

tool/m4/ruby_dtrace_postprocess.m4

@@ -3,11 +3,11 @@ AC_DEFUN([RUBY_MINGW32],
 [AS_CASE(["$host_os"],
 [cygwin*], [
 AC_CACHE_CHECK(for mingw32 environment, rb_cv_mingw32,
-[AC_TRY_CPP([
+[AC_PREPROC_IFELSE([AC_LANG_SOURCE([[
 #ifndef __MINGW32__
 # error
 #endif
-], rb_cv_mingw32=yes,rb_cv_mingw32=no)
+]])],[rb_cv_mingw32=yes],[rb_cv_mingw32=no])
 rm -f conftest*])
 AS_IF([test "$rb_cv_mingw32" = yes], [
     target_os="mingw32"