X-Git-Url: https://erislabs.net/gitweb/?a=blobdiff_plain;f=m4%2Fsnprintf.m4;h=3698e844095025a5ae5abd49e7e1131ad1379865;hb=da8054d48dc22e1c051db54049e005d51a006e69;hp=b6f9f672d282273b93f9280c747386e4a044f574;hpb=3f868c07b0cc903d1ace5d81cabe123d0607435e;p=gnulib.git

diff --git a/m4/snprintf.m4 b/m4/snprintf.m4
index b6f9f672d..3698e8440 100644
--- a/m4/snprintf.m4
+++ b/m4/snprintf.m4
@@ -1,17 +1,52 @@
-# snprintf.m4 serial 3
-dnl Copyright (C) 2002, 2003, 2004, 2007 Free Software Foundation, Inc.
+# snprintf.m4 serial 6
+dnl Copyright (C) 2002-2004, 2007-2013 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 Libintl 0.17 will replace snprintf only if it does not support %1$s,
+dnl but defers to any gnulib snprintf replacements.  Therefore, gnulib
+dnl must guarantee that the decision for replacing snprintf is a superset
+dnl of the reasons checked by libintl.
 AC_DEFUN([gl_FUNC_SNPRINTF],
 [
   AC_REQUIRE([gl_STDIO_H_DEFAULTS])
-  AC_REPLACE_FUNCS(snprintf)
-  AC_CHECK_DECLS_ONCE(snprintf)
+  gl_cv_func_snprintf_usable=no
+  AC_CHECK_FUNCS([snprintf])
+  if test $ac_cv_func_snprintf = yes; then
+    gl_SNPRINTF_SIZE1
+    case "$gl_cv_func_snprintf_size1" in
+      *yes)
+        gl_SNPRINTF_RETVAL_C99
+        case "$gl_cv_func_snprintf_retval_c99" in
+          *yes)
+            gl_PRINTF_POSITIONS
+            case "$gl_cv_func_printf_positions" in
+              *yes)
+                gl_cv_func_snprintf_usable=yes
+                ;;
+            esac
+            ;;
+        esac
+        ;;
+    esac
+  fi
+  if test $gl_cv_func_snprintf_usable = no; then
+    gl_REPLACE_SNPRINTF
+  fi
+  AC_CHECK_DECLS_ONCE([snprintf])
   if test $ac_cv_have_decl_snprintf = no; then
     HAVE_DECL_SNPRINTF=0
   fi
+])
+
+AC_DEFUN([gl_REPLACE_SNPRINTF],
+[
+  AC_REQUIRE([gl_STDIO_H_DEFAULTS])
+  AC_LIBOBJ([snprintf])
+  if test $ac_cv_func_snprintf = yes; then
+    REPLACE_SNPRINTF=1
+  fi
   gl_PREREQ_SNPRINTF
 ])