build: simplify checks for sched.h

* configure.ac: Remove redundant checks.
This commit is contained in:
Eric Blake 2010-05-04 17:18:28 -06:00
parent 062a25f078
commit 2de2d525fc
1 changed files with 10 additions and 24 deletions

View File

@ -108,7 +108,7 @@ LIBS=$old_libs
dnl Availability of various common headers (non-fatal if missing).
AC_CHECK_HEADERS([pwd.h paths.h regex.h sys/syslimits.h \
sched.h termios.h sys/poll.h syslog.h mntent.h net/ethernet.h])
termios.h sys/poll.h syslog.h mntent.h net/ethernet.h])
dnl Where are the XDR functions?
dnl If portablexdr is installed, prefer that.
@ -495,33 +495,19 @@ if test "$with_libvirtd" = "no" ; then
with_lxc=no
fi
if test "$with_lxc" = "yes" || test "$with_lxc" = "check"; then
AC_CHECK_HEADER([sched.h],
dnl Header is there, check for unshare()
[
AC_TRY_LINK([#define _GNU_SOURCE
#include <sched.h>], [
unshare (1);
], [
with_lxc=yes
], [
if test "$with_lxc" = "check"; then
with_lxc=no
AC_MSG_NOTICE([Function unshare() not present in <sched.h> header but required for LXC driver, disabling it])
else
AC_MSG_ERROR([Function unshare() not present in <sched.h> header, but required for LXC driver])
fi
])
dnl Header is not there
],[
AC_TRY_LINK([#define _GNU_SOURCE
#include <sched.h>
], [
unshare (1);
], [
with_lxc=yes
], [
if test "$with_lxc" = "check"; then
with_lxc=no
AC_MSG_NOTICE([Header <sched.h> not found but required for LXC driver, disabling it])
AC_MSG_NOTICE([Function unshare() not present in <sched.h> header but required for LXC driver, disabling it])
else
AC_MSG_ERROR([Header <sched.h> not found but required for LXC driver])
AC_MSG_ERROR([Function unshare() not present in <sched.h> header, but required for LXC driver])
fi
])
fi
if test "$with_lxc" = "yes" ; then