| # 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]) | |
| ]) |