-# fseeko.m4 serial 9
-dnl Copyright (C) 2007-2010 Free Software Foundation, Inc.
+# fseeko.m4 serial 11
+dnl Copyright (C) 2007-2011 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
dnl with or without modifications, as long as this notice is preserved.
AC_REQUIRE([gl_HAVE_FSEEKO])
AC_REQUIRE([gl_STDIN_LARGE_OFFSET])
+ AC_CHECK_DECLS_ONCE([fseeko])
+ if test $ac_cv_have_decl_fseeko = no; then
+ HAVE_DECL_FSEEKO=0
+ fi
+
if test $gl_cv_func_fseeko = no; then
HAVE_FSEEKO=0
gl_REPLACE_FSEEKO
dnl If we are also using the fseek module, then fseek needs replacing, too.
m4_ifdef([gl_REPLACE_FSEEK], [gl_REPLACE_FSEEK])
])
+
+dnl Code shared by fseeko and ftello. Determine if large files are supported,
+dnl but stdin does not start as a large file by default.
+AC_DEFUN([gl_STDIN_LARGE_OFFSET],
+ [
+ AC_CACHE_CHECK([whether stdin defaults to large file offsets],
+ [gl_cv_var_stdin_large_offset],
+ [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <stdio.h>]],
+[[#if defined __SL64 && defined __SCLE /* cygwin */
+ /* Cygwin 1.5.24 and earlier fail to put stdin in 64-bit mode, making
+ fseeko/ftello needlessly fail. This bug was fixed in 1.5.25, and
+ it is easier to do a version check than building a runtime test. */
+# include <cygwin/version.h>
+# if CYGWIN_VERSION_DLL_COMBINED < CYGWIN_VERSION_DLL_MAKE_COMBINED (1005, 25)
+ choke me
+# endif
+#endif]])],
+ [gl_cv_var_stdin_large_offset=yes],
+ [gl_cv_var_stdin_large_offset=no])])
+])