| # off64_t.m4 |
| # serial 1 |
| dnl Copyright (C) 2024-2026 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. |
| dnl This file is offered as-is, without any warranty. |
| |
| dnl Check whether <sys/types.h> defines the 'off64_t' type. |
| dnl Set HAVE_OFF64_T. |
| |
| AC_DEFUN([gl_TYPE_OFF64_T], |
| [ |
| dnl Persuade glibc <sys/types.h>, <stdio.h>, <fcntl.h>, <unistd.h>, <aio.h> |
| dnl to define off64_t. |
| AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS]) |
| |
| AC_CACHE_CHECK([for off64_t], [gl_cv_off64_t], |
| [AC_COMPILE_IFELSE( |
| [AC_LANG_PROGRAM( |
| [[#include <sys/types.h>]], |
| [[int x = sizeof (off64_t *) + sizeof (off64_t); |
| return !x;]])], |
| [gl_cv_off64_t=yes], [gl_cv_off64_t=no])]) |
| |
| if test $gl_cv_off64_t != no; then |
| HAVE_OFF64_T=1 |
| else |
| HAVE_OFF64_T=0 |
| fi |
| AC_SUBST([HAVE_OFF64_T]) |
| ]) |
