1 files changed, 48 insertions, 0 deletions
diff --git a/m4/printf-posix.m4 b/m4/printf-posix.m4
new file mode 100644
index 0000000..2707cf7
--- /dev/null
+++ b/m4/printf-posix.m4
@@ -0,0 +1,48 @@
+# printf-posix.m4 serial 6 (gettext-0.18.2)
+dnl Copyright (C) 2003, 2007, 2009-2019 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_RUN_IFELSE(
+        [AC_LANG_SOURCE([[
+#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
+])