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

79 lines
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# fchdir.m4
# serial 32
dnl Copyright (C) 2006-2025 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_FCHDIR],
[
AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
AC_REQUIRE([gl_DIRENT_H_DEFAULTS])
AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
AC_CHECK_DECLS_ONCE([fchdir])
if test $ac_cv_have_decl_fchdir = no; then
HAVE_DECL_FCHDIR=0
fi
AC_REQUIRE([gl_TEST_FCHDIR])
if test $HAVE_FCHDIR = 1; then
AC_REQUIRE([gl_DIRENT_DIR])
if test $DIR_HAS_FD_MEMBER = 0; then
dnl fchdir() should be replaced if dirfd() does not work.
REPLACE_FCHDIR=1
fi
fi
if test $HAVE_FCHDIR = 0 || test $REPLACE_FCHDIR = 1; then
AC_DEFINE([REPLACE_FCHDIR], [1],
[Define to 1 if gnulib's fchdir() replacement is used.])
dnl We must also replace anything that can manipulate a directory fd,
dnl to keep our bookkeeping up-to-date. We don't have to replace
dnl fstatat, since no platform has fstatat but lacks fchdir.
AC_CACHE_CHECK([whether open can visit directories],
[gl_cv_func_open_directory_works],
[AC_RUN_IFELSE(
[AC_LANG_PROGRAM(
[[#include <fcntl.h>
]GL_MDA_DEFINES],
[[return open(".", O_RDONLY) < 0;]])],
[gl_cv_func_open_directory_works=yes],
[gl_cv_func_open_directory_works=no],
[case "$host_os" in
# Guess yes on Linux systems.
linux-* | linux) gl_cv_func_open_directory_works="guessing yes" ;;
# Guess yes on systems that emulate the Linux system calls.
midipix*) gl_cv_func_open_directory_works="guessing yes" ;;
# Guess yes on glibc systems.
*-gnu* | gnu*) gl_cv_func_open_directory_works="guessing yes" ;;
# Guess no on native Windows.
mingw* | windows*) gl_cv_func_open_directory_works="guessing no" ;;
# If we don't know, obey --enable-cross-guesses.
*) gl_cv_func_open_directory_works="$gl_cross_guess_normal" ;;
esac
])])
case "$gl_cv_func_open_directory_works" in
*yes) ;;
*)
AC_DEFINE([REPLACE_OPEN_DIRECTORY], [1], [Define to 1 if open() should
work around the inability to open a directory.])
;;
esac
fi
])
# Determine whether to use the overrides in lib/fchdir.c.
AC_DEFUN([gl_TEST_FCHDIR],
[
AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
AC_CHECK_FUNCS_ONCE([fchdir])
if test $ac_cv_func_fchdir = no; then
HAVE_FCHDIR=0
fi
])
# Prerequisites of lib/fchdir.c.
AC_DEFUN([gl_PREREQ_FCHDIR], [:])