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| author | Paul Eggert <eggert@cs.ucla.edu> | 2015-04-29 20:11:59 -0700 |
|---|---|---|
| committer | Paul Eggert <eggert@cs.ucla.edu> | 2015-04-29 20:12:24 -0700 |
| commit | 6eaa9a57a172181f866d9c50f3e5880601551932 (patch) | |
| tree | f7c80892059656bef4d7f266f2ae62908deb2d1e /m4/acl.m4 | |
| parent | fa175b449597256dc4cb0411ce1978aa2016c170 (diff) | |
| download | emacs-6eaa9a57a172181f866d9c50f3e5880601551932.tar.gz emacs-6eaa9a57a172181f866d9c50f3e5880601551932.tar.bz2 emacs-6eaa9a57a172181f866d9c50f3e5880601551932.zip | |
Merge from gnulib
This incorporates:
2015-04-29 extern-inline: no need for workaround in GCC 5.1
2015-04-26 file-has-acl: port to CentOS 6
* m4/acl.m4, m4/extern-inline.m4: Update from gnulib.
Diffstat (limited to 'm4/acl.m4')
| -rw-r--r-- | m4/acl.m4 | 24 |
1 files changed, 19 insertions, 5 deletions
diff --git a/m4/acl.m4 b/m4/acl.m4 index 186353c395b..b8f4660f7e3 100644 --- a/m4/acl.m4 +++ b/m4/acl.m4 @@ -1,5 +1,5 @@ # acl.m4 - check for access control list (ACL) primitives -# serial 18 +# serial 19 # Copyright (C) 2002, 2004-2015 Free Software Foundation, Inc. # This file is free software; the Free Software Foundation @@ -181,12 +181,26 @@ AC_DEFUN([gl_FILE_HAS_ACL], [ AC_REQUIRE([gl_FUNC_ACL_ARG]) if test "$enable_acl" != no; then - AC_CHECK_HEADERS([linux/xattr.h], - [AC_CHECK_HEADERS([sys/xattr.h], - [AC_CHECK_FUNCS([getxattr])])]) + AC_CACHE_CHECK([for getxattr with XATTR_NAME_POSIX_ACL macros], + [gl_cv_getxattr_with_posix_acls], + [gl_cv_getxattr_with_posix_acls=no + AC_LINK_IFELSE( + [AC_LANG_PROGRAM( + [[#include <sys/types.h> + #include <sys/xattr.h> + #include <linux/xattr.h> + ]], + [[ssize_t a = getxattr (".", XATTR_NAME_POSIX_ACL_ACCESS, 0, 0); + ssize_t b = getxattr (".", XATTR_NAME_POSIX_ACL_DEFAULT, 0, 0); + return a < 0 || b < 0; + ]])], + [gl_cv_getxattr_with_posix_acls=yes])]) fi - if test "$ac_cv_header_sys_xattr_h,$ac_cv_header_linux_xattr_h,$ac_cv_func_getxattr" = yes,yes,yes; then + if test "$gl_cv_getxattr_with_posix_acls" = yes; then LIB_HAS_ACL= + AC_DEFINE([GETXATTR_WITH_POSIX_ACLS], 1, + [Define to 1 if getxattr works with XATTR_NAME_POSIX_ACL_ACCESS + and XATTR_NAME_POSIX_ACL_DEFAULT.]) else dnl Set gl_need_lib_has_acl to a nonempty value, so that any dnl later gl_FUNC_ACL call will set LIB_HAS_ACL=$LIB_ACL. |