Files
RedBear-OS/local/recipes/tools/diffutils/source/m4/sleep.m4
T
vasilito 068a1ca63e bootloader: rebase onto upstream 1.0.0, sync firmware-loader version
Bootloader fork rebase:
- Base changed from 0.1.0 pre-patched archive to upstream 1.0.0 tag (c7eeb9f)
- Applied 0001-redbear-local-forks.patch (Cargo.toml crate path redirects)
- Applied fix-uefi-alloc-panic.patch equivalents (4 panic!() -> graceful
  error handling in src/main.rs)
- Applied P5-live-preload-cap-1gib.patch (1 GiB cap on live image preload)
- Skipped: P0 GPT partition scan (requires new module + integration),
  P1 timeout/default-resolution, P2 live preload guard (subsumed by
  panic fixes + cap), P3 live image safe read, P4 large ISO boot,
  redox.patch — to be applied in dedicated rebase session.

firmware-loader/Cargo.toml: version 0.1.0 -> 0.3.0 (sync with other
Red Bear custom crates which are at 0.3.0).

fork-upstream-map.toml: bootloader back from PENDING_REBASE to 1.0.0
since the partial rebase matches upstream 1.0.0 content.

fork-upstream-map.toml: base restored to 'main' tracked (was correctly
tracked by build-redbear.sh).
2026-07-11 09:47:59 +03:00

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# sleep.m4
# serial 14
dnl Copyright (C) 2007-2025 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.
AC_DEFUN([gl_FUNC_SLEEP],
[
AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
dnl We expect to see the declaration of sleep() in a header file.
dnl Older versions of mingw have a sleep() function that is an alias to
dnl _sleep() in MSVCRT. It has a different signature than POSIX sleep():
dnl it takes the number of milliseconds as argument and returns void.
dnl mingw does not declare this function.
AC_CHECK_DECLS([sleep], , , [[#include <unistd.h>]])
AC_CHECK_FUNCS_ONCE([sleep])
if test $ac_cv_have_decl_sleep != yes; then
HAVE_SLEEP=0
else
dnl Cygwin 1.5.x has a bug where sleep can't exceed 49.7 days.
AC_CACHE_CHECK([for working sleep], [gl_cv_func_sleep_works],
[AC_RUN_IFELSE([AC_LANG_PROGRAM([[
#include <errno.h>
#include <unistd.h>
#include <signal.h>
static void
handle_alarm (int sig)
{
if (sig != SIGALRM)
_exit (2);
}
]], [[
/* Failure to compile this test due to missing alarm is okay,
since all such platforms (mingw, MSVC) also lack sleep. */
unsigned int pentecost = 50 * 24 * 60 * 60; /* 50 days. */
unsigned int remaining;
signal (SIGALRM, handle_alarm);
alarm (1);
remaining = sleep (pentecost);
if (remaining > pentecost)
return 3;
if (remaining <= pentecost - 10)
return 4;
return 0;
]])],
[gl_cv_func_sleep_works=yes], [gl_cv_func_sleep_works=no],
[case "$host_os" in
# Guess yes on glibc systems.
*-gnu* | gnu*) gl_cv_func_sleep_works="guessing yes" ;;
# Guess yes on musl systems.
*-musl*) gl_cv_func_sleep_works="guessing yes" ;;
# Guess yes on systems that emulate the Linux system calls.
midipix*) gl_cv_func_sleep_works="guessing yes" ;;
# Guess no on native Windows.
mingw* | windows*) gl_cv_func_sleep_works="guessing no" ;;
# If we don't know, obey --enable-cross-guesses.
*) gl_cv_func_sleep_works="$gl_cross_guess_normal" ;;
esac
])])
case "$gl_cv_func_sleep_works" in
*yes) ;;
*)
REPLACE_SLEEP=1
;;
esac
fi
])