"Fossies" - the Fresh Open Source Software Archive

Member "CSSC-1.4.1/m4/fseeko.m4" (7 Feb 2016, 2287 Bytes) of package /linux/privat/CSSC-1.4.1.tar.gz:


As a special service "Fossies" has tried to format the requested text file into HTML format (style: standard) with prefixed line numbers. Alternatively you can here view or download the uninterpreted source code file. See also the latest Fossies "Diffs" side-by-side code changes report for "fseeko.m4": 1.4.0_vs_1.4.1.

    1 # fseeko.m4 serial 17
    2 dnl Copyright (C) 2007-2016 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 AC_DEFUN([gl_FUNC_FSEEKO],
    8 [
    9   AC_REQUIRE([gl_STDIO_H_DEFAULTS])
   10   AC_REQUIRE([gl_STDIN_LARGE_OFFSET])
   11   AC_REQUIRE([gl_SYS_TYPES_H])
   12   AC_REQUIRE([AC_PROG_CC])
   13 
   14   dnl Persuade glibc <stdio.h> to declare fseeko().
   15   AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
   16 
   17   AC_CACHE_CHECK([for fseeko], [gl_cv_func_fseeko],
   18     [
   19       AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <stdio.h>
   20 ]], [fseeko (stdin, 0, 0);])],
   21         [gl_cv_func_fseeko=yes], [gl_cv_func_fseeko=no])
   22     ])
   23 
   24   AC_CHECK_DECLS_ONCE([fseeko])
   25   if test $ac_cv_have_decl_fseeko = no; then
   26     HAVE_DECL_FSEEKO=0
   27   fi
   28 
   29   if test $gl_cv_func_fseeko = no; then
   30     HAVE_FSEEKO=0
   31   else
   32     if test $WINDOWS_64_BIT_OFF_T = 1; then
   33       REPLACE_FSEEKO=1
   34     fi
   35     if test $gl_cv_var_stdin_large_offset = no; then
   36       REPLACE_FSEEKO=1
   37     fi
   38     m4_ifdef([gl_FUNC_FFLUSH_STDIN], [
   39       gl_FUNC_FFLUSH_STDIN
   40       if test $gl_cv_func_fflush_stdin != yes; then
   41         REPLACE_FSEEKO=1
   42       fi
   43     ])
   44   fi
   45 ])
   46 
   47 dnl Code shared by fseeko and ftello.  Determine if large files are supported,
   48 dnl but stdin does not start as a large file by default.
   49 AC_DEFUN([gl_STDIN_LARGE_OFFSET],
   50   [
   51     AC_CACHE_CHECK([whether stdin defaults to large file offsets],
   52       [gl_cv_var_stdin_large_offset],
   53       [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <stdio.h>]],
   54 [[#if defined __SL64 && defined __SCLE /* cygwin */
   55   /* Cygwin 1.5.24 and earlier fail to put stdin in 64-bit mode, making
   56      fseeko/ftello needlessly fail.  This bug was fixed in 1.5.25, and
   57      it is easier to do a version check than building a runtime test.  */
   58 # include <cygwin/version.h>
   59 # if CYGWIN_VERSION_DLL_COMBINED < CYGWIN_VERSION_DLL_MAKE_COMBINED (1005, 25)
   60   choke me
   61 # endif
   62 #endif]])],
   63         [gl_cv_var_stdin_large_offset=yes],
   64         [gl_cv_var_stdin_large_offset=no])])
   65 ])
   66 
   67 # Prerequisites of lib/fseeko.c.
   68 AC_DEFUN([gl_PREREQ_FSEEKO],
   69 [
   70   dnl Native Windows has the function _fseeki64. mingw hides it, but mingw64
   71   dnl makes it usable again.
   72   AC_CHECK_FUNCS([_fseeki64])
   73 ])