Files
RedBear-OS/local/recipes/tools/diffutils/source/m4/pselect.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

78 lines
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# pselect.m4
# serial 11
dnl Copyright (C) 2011-2025 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_PSELECT],
[
AC_REQUIRE([gl_SYS_SELECT_H])
AC_REQUIRE([AC_C_RESTRICT])
AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
AC_CHECK_FUNCS_ONCE([pselect])
if test $ac_cv_func_pselect = yes; then
AC_CACHE_CHECK([whether signature of pselect conforms to POSIX],
[gl_cv_sig_pselect],
[AC_LINK_IFELSE(
[AC_LANG_PROGRAM(
[[#include <sys/select.h>
]],
[[int (*p) (int, fd_set *, fd_set *, fd_set *restrict,
struct timespec const *restrict,
sigset_t const *restrict) = pselect;
return !p;]])],
[gl_cv_sig_pselect=yes],
[gl_cv_sig_pselect=no])])
dnl On FreeBSD 8.2, pselect() doesn't always reject bad fds.
AC_CACHE_CHECK([whether pselect detects invalid fds],
[gl_cv_func_pselect_detects_ebadf],
[
AC_RUN_IFELSE([AC_LANG_PROGRAM([[
#include <sys/types.h>
#include <sys/time.h>
#if HAVE_SYS_SELECT_H
# include <sys/select.h>
#endif
#include <unistd.h>
#include <errno.h>
]GL_MDA_DEFINES],
[[
fd_set set;
dup2(0, 16);
FD_ZERO(&set);
FD_SET(16, &set);
close(16);
struct timespec timeout;
timeout.tv_sec = 0;
timeout.tv_nsec = 5000;
return pselect (17, &set, NULL, NULL, &timeout, NULL) != -1 || errno != EBADF;
]])], [gl_cv_func_pselect_detects_ebadf=yes],
[gl_cv_func_pselect_detects_ebadf=no],
[
case "$host_os" in
# Guess yes on Linux systems.
linux-* | linux) gl_cv_func_pselect_detects_ebadf="guessing yes" ;;
# Guess yes on systems that emulate the Linux system calls.
midipix*) gl_cv_func_pselect_detects_ebadf="guessing yes" ;;
# Guess yes on glibc systems.
*-gnu* | gnu*) gl_cv_func_pselect_detects_ebadf="guessing yes" ;;
# If we don't know, obey --enable-cross-guesses.
*) gl_cv_func_pselect_detects_ebadf="$gl_cross_guess_normal" ;;
esac
])
])
case $gl_cv_func_pselect_detects_ebadf in
*yes) ;;
*) REPLACE_PSELECT=1 ;;
esac
fi
if test $ac_cv_func_pselect = no || test $gl_cv_sig_pselect = no; then
REPLACE_PSELECT=1
fi
])