diff options
Diffstat (limited to 'm4/dirfd.m4')
| -rw-r--r-- | m4/dirfd.m4 | 29 |
1 files changed, 19 insertions, 10 deletions
diff --git a/m4/dirfd.m4 b/m4/dirfd.m4 index 2135535042..d1ee2c7f61 100644 --- a/m4/dirfd.m4 +++ b/m4/dirfd.m4 @@ -1,4 +1,4 @@ -# serial 26 -*- Autoconf -*- +# serial 27 -*- 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 +36,24 @@ 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 only if the system declares dirfd already. + if test $ac_cv_have_decl_dirfd = yes; then REPLACE_DIRFD=1 - AC_DEFINE([REPLACE_DIRFD], [1], - [Define to 1 if gnulib's dirfd() replacement is used.]);; - esac + fi + dnl Replace dirfd() on native Windows, to support fdopendir(). + AC_REQUIRE([gl_DIRENT_DIR]) + if test $DIR_HAS_FD_MEMBER = 0; then + REPLACE_DIRFD=1 + fi + dnl OS/2 kLIBC dirfd() does not work. + case "$host_os" in + os2*) REPLACE_DIRFD=1 ;; + esac + fi ]) dnl Prerequisites of lib/dirfd.c. |