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This incorporates: 2019-09-22 Update some URLs 2019-09-15 fcntl-h: fix compilation error of creat.c on MSVC 2019-09-15 creat: new module 2019-09-15 access: new module 2019-09-09 Add option to assume best, not worst, when cross-compiling. * build-aux/config.guess, build-aux/config.sub, doc/misc/texinfo.tex: * lib/careadlinkat.c, lib/careadlinkat.h, lib/count-leading-zeros.h: * lib/count-trailing-zeros.h, lib/diffseq.h, lib/fcntl.in.h: * lib/ftoastr.c, lib/get-permissions.c: * lib/ieee754.in.h, lib/inttypes.in.h, lib/mktime.c, lib/open.c: * lib/pathmax.h, lib/pipe2.c, lib/stddef.in.h, lib/stdint.in.h: * lib/stdlib.in.h, lib/str-two-way.h, lib/string.in.h, lib/time.in.h: * lib/timegm.c, lib/unistd.in.h, m4/canonicalize.m4: * m4/extern-inline.m4, m4/fcntl_h.m4, m4/fdopendir.m4: * m4/getgroups.m4, m4/getopt.m4, m4/gettimeofday.m4: * m4/gnulib-common.m4, m4/largefile.m4: * m4/lstat.m4, m4/memmem.m4, m4/mktime.m4, m4/nocrash.m4, m4/open.m4: * m4/pselect.m4, m4/putenv.m4, m4/readlink.m4, m4/regex.m4: * m4/symlink.m4, m4/unistd_h.m4, m4/utimens.m4, m4/utimes.m4: Copy from Gnulib. * lib/gnulib.mk.in, m4/gnulib-comp.m4: Regenerate. * m4/open-slash.m4: New file, copied from Gnulib.
80 lines
2.8 KiB
Plaintext
80 lines
2.8 KiB
Plaintext
# serial 33
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# Copyright (C) 1997-2001, 2003-2019 Free Software Foundation, Inc.
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#
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# This file is free software; the Free Software Foundation
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# gives unlimited permission to copy and/or distribute it,
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# with or without modifications, as long as this notice is preserved.
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dnl From Jim Meyering.
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AC_DEFUN([gl_FUNC_LSTAT],
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[
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AC_REQUIRE([AC_CANONICAL_HOST])
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AC_REQUIRE([gl_SYS_STAT_H_DEFAULTS])
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dnl If lstat does not exist, the replacement <sys/stat.h> does
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dnl "#define lstat stat", and lstat.c is a no-op.
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AC_CHECK_FUNCS_ONCE([lstat])
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if test $ac_cv_func_lstat = yes; then
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AC_REQUIRE([gl_FUNC_LSTAT_FOLLOWS_SLASHED_SYMLINK])
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case $host_os,$gl_cv_func_lstat_dereferences_slashed_symlink in
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solaris* | *no)
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REPLACE_LSTAT=1
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;;
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esac
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else
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HAVE_LSTAT=0
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fi
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])
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# Prerequisites of lib/lstat.c.
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AC_DEFUN([gl_PREREQ_LSTAT], [:])
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AC_DEFUN([gl_FUNC_LSTAT_FOLLOWS_SLASHED_SYMLINK],
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[
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dnl We don't use AC_FUNC_LSTAT_FOLLOWS_SLASHED_SYMLINK any more, because it
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dnl is no longer maintained in Autoconf and because it invokes AC_LIBOBJ.
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AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
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AC_CACHE_CHECK([whether lstat correctly handles trailing slash],
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[gl_cv_func_lstat_dereferences_slashed_symlink],
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[rm -f conftest.sym conftest.file
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echo >conftest.file
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AC_RUN_IFELSE(
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[AC_LANG_PROGRAM(
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[AC_INCLUDES_DEFAULT],
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[[struct stat sbuf;
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if (symlink ("conftest.file", "conftest.sym") != 0)
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return 1;
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/* Linux will dereference the symlink and fail, as required by
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POSIX. That is better in the sense that it means we will not
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have to compile and use the lstat wrapper. */
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return lstat ("conftest.sym/", &sbuf) == 0;
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]])],
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[gl_cv_func_lstat_dereferences_slashed_symlink=yes],
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[gl_cv_func_lstat_dereferences_slashed_symlink=no],
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[case "$host_os" in
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linux-* | linux)
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# Guess yes on Linux systems.
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gl_cv_func_lstat_dereferences_slashed_symlink="guessing yes" ;;
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*-gnu* | gnu*)
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# Guess yes on glibc systems.
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gl_cv_func_lstat_dereferences_slashed_symlink="guessing yes" ;;
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mingw*)
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# Guess no on native Windows.
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gl_cv_func_lstat_dereferences_slashed_symlink="guessing no" ;;
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*)
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# If we don't know, obey --enable-cross-guesses.
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gl_cv_func_lstat_dereferences_slashed_symlink="$gl_cross_guess_normal" ;;
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esac
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])
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rm -f conftest.sym conftest.file
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])
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case "$gl_cv_func_lstat_dereferences_slashed_symlink" in
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*yes)
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AC_DEFINE_UNQUOTED([LSTAT_FOLLOWS_SLASHED_SYMLINK], [1],
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[Define to 1 if 'lstat' dereferences a symlink specified
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with a trailing slash.])
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;;
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esac
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])
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