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-rw-r--r--m4/printf-posix.m444
1 files changed, 44 insertions, 0 deletions
diff --git a/m4/printf-posix.m4 b/m4/printf-posix.m4
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+# printf-posix.m4 serial 3 (gettext-0.17)
+dnl Copyright (C) 2003, 2007 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 Test whether the printf() function supports POSIX/XSI format strings with
+dnl positions.
+
+AC_DEFUN([gt_PRINTF_POSIX],
+[
+ AC_REQUIRE([AC_PROG_CC])
+ AC_CACHE_CHECK([whether printf() supports POSIX/XSI format strings],
+ gt_cv_func_printf_posix,
+ [
+ AC_TRY_RUN([
+#include <stdio.h>
+#include <string.h>
+/* The string "%2$d %1$d", with dollar characters protected from the shell's
+ dollar expansion (possibly an autoconf bug). */
+static char format[] = { '%', '2', '$', 'd', ' ', '%', '1', '$', 'd', '\0' };
+static char buf[100];
+int main ()
+{
+ sprintf (buf, format, 33, 55);
+ return (strcmp (buf, "55 33") != 0);
+}], gt_cv_func_printf_posix=yes, gt_cv_func_printf_posix=no,
+ [
+ AC_EGREP_CPP(notposix, [
+#if defined __NetBSD__ || defined __BEOS__ || defined _MSC_VER || defined __MINGW32__ || defined __CYGWIN__
+ notposix
+#endif
+ ], gt_cv_func_printf_posix="guessing no",
+ gt_cv_func_printf_posix="guessing yes")
+ ])
+ ])
+ case $gt_cv_func_printf_posix in
+ *yes)
+ AC_DEFINE(HAVE_POSIX_PRINTF, 1,
+ [Define if your printf() function supports format strings with positions.])
+ ;;
+ esac
+])