1 # obstack-printf.m4 serial 4 2 dnl Copyright (C) 2008-2012 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 From Eric Blake. 8 dnl Test whether obstack_printf() exists. For now, we assume that 9 dnl obstack_vprintf behaves identically, so we only test for one. 10 11 AC_DEFUN([gl_FUNC_OBSTACK_PRINTF], 12 [ 13 dnl Persuade glibc <stdio.h> to declare obstack_printf(), obstack_vprintf(). 14 AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS]) 15 16 AC_REQUIRE([gl_STDIO_H_DEFAULTS]) 17 AC_CHECK_FUNCS_ONCE([obstack_printf]) 18 if test $ac_cv_func_obstack_printf = no ; then 19 gl_REPLACE_OBSTACK_PRINTF 20 fi 21 22 gl_DECL_OBSTACK_PRINTF 23 ]) 24 25 AC_DEFUN([gl_REPLACE_OBSTACK_PRINTF], 26 [ 27 AC_REQUIRE([gl_STDIO_H_DEFAULTS]) 28 if test $ac_cv_func_obstack_printf = yes; then 29 REPLACE_OBSTACK_PRINTF=1 30 fi 31 ]) 32 33 dnl Ensure obstack_printf() and obstack_vprintf() are declared 34 dnl (whether or not they are being replaced). 35 AC_DEFUN([gl_DECL_OBSTACK_PRINTF], 36 [ 37 AC_CHECK_DECLS_ONCE([obstack_printf]) 38 if test $ac_cv_have_decl_obstack_printf = no; then 39 HAVE_DECL_OBSTACK_PRINTF=0 40 fi 41 ]) 42
