nobu	2018-02-16 23:35:06 +0900 (Fri, 16 Feb 2018)

  New Revision: 62432

  https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=62432

  Log:
    ruby_check_va_copy.m4: for cross compiling
    
    * tool/m4/ruby_check_va_copy.m4 (RUBY_CHECK_VA_COPY): use
      AC_TRY_LINK instead of AC_TRY_RUN for cross compiling.

  Modified files:
    trunk/tool/m4/ruby_check_va_copy.m4
Index: tool/m4/ruby_check_va_copy.m4
===================================================================
--- tool/m4/ruby_check_va_copy.m4	(revision 62431)
+++ tool/m4/ruby_check_va_copy.m4	(revision 62432)
@@ -1,11 +1,11 @@ https://github.com/ruby/ruby/blob/trunk/tool/m4/ruby_check_va_copy.m4#L1
 # -*- Autoconf -*-
 AC_DEFUN([RUBY_CHECK_VA_COPY], [
-    if test "x$rb_cv_va_copy" = x; then
-        AC_TRY_RUN(
-[#include <stdlib.h>
-#include <stdarg.h>
-#include <string.h>
-#define CONFTEST_VA_COPY(dst, src) $2
+    AS_IF([test "x$rb_cv_va_copy" = x], [dnl
+        AC_TRY_LINK(
+[@%:@include <stdlib.h>
+@%:@include <stdarg.h>
+@%:@include <string.h>
+@%:@define CONFTEST_VA_COPY(dst, src) $2
 void
 conftest(int n, ...)
 {
@@ -19,16 +19,12 @@ conftest(int n, ...) https://github.com/ruby/ruby/blob/trunk/tool/m4/ruby_check_va_copy.m4#L19
     for (i = 0; i < n; i++) if ((int)va_arg(ap, int) != n - i - 1) abort();
     va_end(ap);
     va_end(ap2);
-}
-int
-main()
-{
-    conftest(10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0);
-    exit(0);
 }],
-	rb_cv_va_copy="$1",
-        rb_cv_va_copy="",
-        rb_cv_va_copy="")dnl
-    fi
+[
+    conftest(10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0);
+],
+    [rb_cv_va_copy="$1"],
+    [rb_cv_va_copy=""])dnl
+    ])dnl
 ])dnl
 dnl

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