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(UTILS_FUNC_DIRFD): Test the cache variable, not one

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that is guaranteed to be `no'.  Use `no_such_member' to indicate
that condition, rather than `-1' which is slightly misleading.
Change the name of the cache variable to have the gl_ prefix.
Prompted by a patch from Richard Dawe for DJGPP.
This commit is contained in:
Jim Meyering
2003-03-17 19:28:31 +00:00
parent 49475d0eea
commit 70c7e4f3e8
1 changed files with 6 additions and 6 deletions
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m4/dirfd.m4
+6 -6
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@@ -1,4 +1,4 @@
#serial 4
#serial 5
dnl Find out how to get the file descriptor associated with an open DIR*.
dnl From Jim Meyering
@@ -45,7 +45,7 @@ AC_DEFUN([UTILS_FUNC_DIRFD],
AC_REPLACE_FUNCS([dirfd])
AC_CACHE_CHECK(
[how to get the file descriptor associated with an open DIR*],
ac_cv_sys_dir_fd_member_name,
gl_cv_sys_dir_fd_member_name,
[
dirfd_save_CFLAGS=$CFLAGS
for ac_expr in d_fd dd_fd; do
@@ -60,14 +60,14 @@ AC_DEFUN([UTILS_FUNC_DIRFD],
CFLAGS=$dirfd_save_CFLAGS
test "$dir_fd_found" = yes && break
done
test "$dir_fd_found" = yes || ac_expr=-1
test "$dir_fd_found" = yes || ac_expr=no_such_member
ac_cv_sys_dir_fd_member_name=$ac_expr
gl_cv_sys_dir_fd_member_name=$ac_expr
]
)
if test $ac_cv_have_decl_dirfd = no; then
if test $gl_cv_sys_dir_fd_member_name != no_such_member; then
AC_DEFINE_UNQUOTED(DIR_FD_MEMBER_NAME,
$ac_cv_sys_dir_fd_member_name,
$gl_cv_sys_dir_fd_member_name,
[the name of the file descriptor member of DIR])
fi
AH_VERBATIM(DIR_TO_FD,