1# fseeko.m4 serial 4 2dnl Copyright (C) 2007, 2008, 2009 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 7AC_DEFUN([gl_FUNC_FSEEKO], 8[ 9 AC_REQUIRE([gl_STDIO_H_DEFAULTS]) 10 AC_REQUIRE([AC_PROG_CC]) 11 AC_REQUIRE([gl_STDIN_LARGE_OFFSET]) 12 13 dnl Persuade glibc <stdio.h> to declare fseeko(). 14 AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS]) 15 16 AC_CACHE_CHECK([for fseeko], [gl_cv_func_fseeko], 17 [ 18 AC_TRY_LINK([#include <stdio.h>], [fseeko (stdin, 0, 0);], 19 [gl_cv_func_fseeko=yes], [gl_cv_func_fseeko=no]) 20 ]) 21 if test $gl_cv_func_fseeko = no; then 22 HAVE_FSEEKO=0 23 gl_REPLACE_FSEEKO 24 elif test $gl_cv_var_stdin_large_offset = no; then 25 gl_REPLACE_FSEEKO 26 fi 27]) 28 29AC_DEFUN([gl_REPLACE_FSEEKO], 30[ 31 AC_LIBOBJ([fseeko]) 32 AC_REQUIRE([gl_STDIO_H_DEFAULTS]) 33 REPLACE_FSEEKO=1 34]) 35