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      1 # vsnprintf.m4 serial 6
      2 dnl Copyright (C) 2002-2004, 2007-2012 Free Software Foundation, Inc.
      3 dnl This file is free software; the Free Software Foundation
      4 dnl gives unlimited permission to copy and/or distribute it,
      5 dnl with or without modifications, as long as this notice is preserved.
      6 
      7 dnl Libintl 0.17 will replace vsnprintf only if it does not support %1$s,
      8 dnl but defers to any gnulib vsnprintf replacements.  Therefore, gnulib
      9 dnl must guarantee that the decision for replacing vsnprintf is a superset
     10 dnl of the reasons checked by libintl.
     11 AC_DEFUN([gl_FUNC_VSNPRINTF],
     12 [
     13   AC_REQUIRE([gl_STDIO_H_DEFAULTS])
     14   gl_cv_func_vsnprintf_usable=no
     15   AC_CHECK_FUNCS([vsnprintf])
     16   if test $ac_cv_func_vsnprintf = yes; then
     17     gl_SNPRINTF_SIZE1
     18     case "$gl_cv_func_snprintf_size1" in
     19       *yes)
     20         gl_SNPRINTF_RETVAL_C99
     21         case "$gl_cv_func_snprintf_retval_c99" in
     22           *yes)
     23             gl_PRINTF_POSITIONS
     24             case "$gl_cv_func_printf_positions" in
     25               *yes)
     26                 gl_cv_func_vsnprintf_usable=yes
     27                 ;;
     28             esac
     29             ;;
     30         esac
     31         ;;
     32     esac
     33   fi
     34   if test $gl_cv_func_vsnprintf_usable = no; then
     35     gl_REPLACE_VSNPRINTF
     36   fi
     37   AC_CHECK_DECLS_ONCE([vsnprintf])
     38   if test $ac_cv_have_decl_vsnprintf = no; then
     39     HAVE_DECL_VSNPRINTF=0
     40   fi
     41 ])
     42 
     43 AC_DEFUN([gl_REPLACE_VSNPRINTF],
     44 [
     45   AC_REQUIRE([gl_STDIO_H_DEFAULTS])
     46   AC_LIBOBJ([vsnprintf])
     47   if test $ac_cv_func_vsnprintf = yes; then
     48     REPLACE_VSNPRINTF=1
     49   fi
     50   gl_PREREQ_VSNPRINTF
     51 ])
     52 
     53 # Prerequisites of lib/vsnprintf.c.
     54 AC_DEFUN([gl_PREREQ_VSNPRINTF], [:])
     55