From: Bruno Haible <bruno@clisp.org>
Date: Wed, 3 May 2006 12:09:55 +0000 (+0000)
Subject: C99 compliant <stdarg.h>.
X-Git-Tag: v0.15~198
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ee0dc930db616df3eda7f912f4fcb8376593c1be;p=thirdparty%2Fgettext.git

C99 compliant <stdarg.h>.
---

diff --git a/gettext-tools/m4/stdarg.m4 b/gettext-tools/m4/stdarg.m4
new file mode 100644
index 000000000..3424d414b
--- /dev/null
+++ b/gettext-tools/m4/stdarg.m4
@@ -0,0 +1,39 @@
+# stdarg.m4 serial 1
+dnl Copyright (C) 2006 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl From Bruno Haible.
+dnl Provide a working va_copy in combination with <stdarg.h>.
+
+AC_DEFUN([gl_STDARG_H],
+[
+  AC_MSG_CHECKING([for va_copy])
+  AC_CACHE_VAL([gl_cv_func_va_copy], [
+    AC_TRY_COMPILE([#include <stdarg.h>], [
+#ifndef va_copy
+void (*func) (va_list, va_list) = va_copy;
+#endif
+],
+      [gl_cv_func_va_copy=yes], [gl_cv_func_va_copy=no])])
+  AC_MSG_RESULT([$gl_cv_func_va_copy])
+  if test $gl_cv_func_va_copy = no; then
+    # Provide a substitute, either __va_copy or as a simple assignment.
+    AC_CACHE_VAL([gl_cv_func___va_copy], [
+      AC_TRY_COMPILE([#include <stdarg.h>], [
+#ifndef __va_copy
+error, bail out
+#endif
+],
+        [gl_cv_func___va_copy=yes], [gl_cv_func___va_copy=no])])
+    if test $gl_cv_func___va_copy = yes; then
+      AC_DEFINE([va_copy], [__va_copy],
+        [Define as a macro for copying va_list variables.])
+    else
+      AH_VERBATIM([#define gl_va_copy(a,b) (a) = (b)])
+      AC_DEFINE([va_copy], [gl_va_copy],
+        [Define as a macro for copying va_list variables.])
+    fi
+  fi
+])