| 1 | # vsnprintf.m4 serial 6 |
| 2 | dnl Copyright (C) 2002-2004, 2007-2013 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], [:]) |