mirror of
git://git.sv.gnu.org/coreutils.git
synced 2026-04-13 07:15:50 +02:00
74 lines
2.3 KiB
Plaintext
74 lines
2.3 KiB
Plaintext
#serial 1
|
|
# Use the replacement ftw.c if the one in the C library is inadequate or buggy.
|
|
# For now, we always use the code in lib/ because libc doesn't have the FTW_DCH
|
|
# or FTW_DCHP that we need. Arrange to use lib/ftw.h. And since that
|
|
# implementation uses tsearch.c/tdestroy, add tsearch.o to the list of
|
|
# objects and arrange to use lib/search.h if necessary.
|
|
# From Jim Meyering
|
|
|
|
AC_DEFUN([AC_FUNC_FTW],
|
|
[
|
|
# prerequisites
|
|
AC_REQUIRE([jm_FUNC_LSTAT])
|
|
AC_REQUIRE([AC_HEADER_DIRENT])
|
|
AC_CHECK_HEADERS(sys/param.h)
|
|
AC_CHECK_DECLS([stpcpy])
|
|
|
|
# In the event that we have to use the replacement ftw.c,
|
|
# see if we'll also need the replacement tsearch.c.
|
|
AC_CHECK_FUNC([tdestroy], , [need_tdestroy=1])
|
|
|
|
AC_CACHE_CHECK([for ftw/FTW_CHDIR that informs callback of failed chdir],
|
|
ac_cv_func_ftw_working,
|
|
[
|
|
# The following test would fail prior to glibc-2.3.2, because `depth'
|
|
# would be 2 rather than 4. Of course, now that we require FTW_DCH
|
|
# and FTW_DCHP, this test fails even with GNU libc's fixed ftw.
|
|
mkdir -p conftest.dir/a/b/c
|
|
AC_RUN_IFELSE([AC_LANG_SOURCE([[
|
|
#include <string.h>
|
|
#include <stdlib.h>
|
|
#include <ftw.h>
|
|
|
|
static char *_f[] = { "conftest.dir", "conftest.dir/a",
|
|
"conftest.dir/a/b", "conftest.dir/a/b/c" };
|
|
static char **p = _f;
|
|
static int depth;
|
|
|
|
static int
|
|
cb (const char *file, const struct stat *sb, int file_type, struct FTW *info)
|
|
{
|
|
if (strcmp (file, *p++) != 0)
|
|
exit (1);
|
|
++depth;
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
main ()
|
|
{
|
|
/* Require these symbols, too. */
|
|
int d1 = FTW_DCH;
|
|
int d2 = FTW_DCHP;
|
|
|
|
int err = nftw ("conftest.dir", cb, 30, FTW_PHYS | FTW_MOUNT | FTW_CHDIR);
|
|
exit ((err == 0 && depth == 4) ? 0 : 1);
|
|
}
|
|
]])],
|
|
[ac_cv_func_ftw_working=yes],
|
|
[ac_cv_func_ftw_working=no],
|
|
[ac_cv_func_ftw_working=no])])
|
|
rm -rf conftest.dir
|
|
if test $ac_cv_func_ftw_working = no; then
|
|
AC_LIBOBJ([ftw])
|
|
AC_CONFIG_LINKS([$ac_config_libobj_dir/ftw.h:$ac_config_libobj_dir/ftw_.h])
|
|
# Add tsearch.o IFF we have to use the replacement ftw.c.
|
|
if test -n "$need_tdestroy"; then
|
|
AC_LIBOBJ([tsearch])
|
|
# Link search.h to search_.h if we use the replacement tsearch.c.
|
|
AC_CONFIG_LINKS(
|
|
[$ac_config_libobj_dir/search.h:$ac_config_libobj_dir/search_.h])
|
|
fi
|
|
fi
|
|
])# AC_FUNC_FTW
|