1# obstack-printf.m4 serial 4 2dnl Copyright (C) 2008-2012 Free Software Foundation, Inc. 3dnl This file is free software; the Free Software Foundation 4dnl gives unlimited permission to copy and/or distribute it, 5dnl with or without modifications, as long as this notice is preserved. 6 7dnl From Eric Blake. 8dnl Test whether obstack_printf() exists. For now, we assume that 9dnl obstack_vprintf behaves identically, so we only test for one. 10 11AC_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 25AC_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 33dnl Ensure obstack_printf() and obstack_vprintf() are declared 34dnl (whether or not they are being replaced). 35AC_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