diff options
Diffstat (limited to 'm4/dirfd.m4')
| -rw-r--r-- | m4/dirfd.m4 | 26 |
1 files changed, 14 insertions, 12 deletions
diff --git a/m4/dirfd.m4 b/m4/dirfd.m4 index 85223351b28..e58582e6145 100644 --- a/m4/dirfd.m4 +++ b/m4/dirfd.m4 @@ -1,4 +1,4 @@ -# serial 26 -*- Autoconf -*- +# serial 30 -*- Autoconf -*- dnl Find out how to get the file descriptor associated with an open DIR*. @@ -12,7 +12,7 @@ dnl From Jim Meyering AC_DEFUN([gl_FUNC_DIRFD], [ AC_REQUIRE([gl_DIRENT_H_DEFAULTS]) - AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles + AC_REQUIRE([AC_CANONICAL_HOST]) dnl Persuade glibc <dirent.h> to declare dirfd(). AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS]) @@ -36,15 +36,17 @@ AC_DEFUN([gl_FUNC_DIRFD], [gl_cv_func_dirfd_macro=yes], [gl_cv_func_dirfd_macro=no])]) - # Use the replacement if we have no function or macro with that name, - # or if OS/2 kLIBC whose dirfd() does not work. - # Replace only if the system declares dirfd already. - case $ac_cv_func_dirfd,$gl_cv_func_dirfd_macro,$host_os,$ac_cv_have_decl_dirfd in - no,no,*,yes | *,*,os2*,yes) + if test $ac_cv_func_dirfd = no && test $gl_cv_func_dirfd_macro = no; then + HAVE_DIRFD=0 + else + HAVE_DIRFD=1 + dnl Replace dirfd() on native Windows and OS/2 kLIBC, + dnl to support fdopendir(). + AC_REQUIRE([gl_DIRENT_DIR]) + if test $DIR_HAS_FD_MEMBER = 0; then REPLACE_DIRFD=1 - AC_DEFINE([REPLACE_DIRFD], [1], - [Define to 1 if gnulib's dirfd() replacement is used.]);; - esac + fi + fi ]) dnl Prerequisites of lib/dirfd.c. @@ -53,7 +55,7 @@ AC_DEFUN([gl_PREREQ_DIRFD], AC_CACHE_CHECK([how to get the file descriptor associated with an open DIR*], [gl_cv_sys_dir_fd_member_name], [ - dirfd_save_CFLAGS=$CFLAGS + gl_saved_CFLAGS=$CFLAGS for ac_expr in d_fd dd_fd; do CFLAGS="$CFLAGS -DDIR_FD_MEMBER_NAME=$ac_expr" @@ -63,7 +65,7 @@ AC_DEFUN([gl_PREREQ_DIRFD], [[DIR *dir_p = opendir("."); (void) dir_p->DIR_FD_MEMBER_NAME;]])], [dir_fd_found=yes] ) - CFLAGS=$dirfd_save_CFLAGS + CFLAGS=$gl_saved_CFLAGS test "$dir_fd_found" = yes && break done test "$dir_fd_found" = yes || ac_expr=no_such_member |