1 # snprintf.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 snprintf only if it does not support %1$s, 8 dnl but defers to any gnulib snprintf replacements. Therefore, gnulib 9 dnl must guarantee that the decision for replacing snprintf is a superset 10 dnl of the reasons checked by libintl. 11 AC_DEFUN([gl_FUNC_SNPRINTF], 12 [ 13 AC_REQUIRE([gl_STDIO_H_DEFAULTS]) 14 gl_cv_func_snprintf_usable=no 15 AC_CHECK_FUNCS([snprintf]) 16 if test $ac_cv_func_snprintf = yes; then 17 gl_SNPRINTF_SIZE1 18 case "$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_snprintf_usable=yes 27 ;; 28 esac 29 ;; 30 esac 31 ;; 32 esac 33 fi 34 if test $gl_cv_func_snprintf_usable = no; then 35 gl_REPLACE_SNPRINTF 36 fi 37 AC_CHECK_DECLS_ONCE([snprintf]) 38 if test $ac_cv_have_decl_snprintf = no; then 39 HAVE_DECL_SNPRINTF=0 40 fi 41 ]) 42 43 AC_DEFUN([gl_REPLACE_SNPRINTF], 44 [ 45 AC_REQUIRE([gl_STDIO_H_DEFAULTS]) 46 AC_LIBOBJ([snprintf]) 47 if test $ac_cv_func_snprintf = yes; then 48 REPLACE_SNPRINTF=1 49 fi 50 gl_PREREQ_SNPRINTF 51 ]) 52 53 # Prerequisites of lib/snprintf.c. 54 AC_DEFUN([gl_PREREQ_SNPRINTF], [:]) 55
