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build: Cache check for futex() and eventfd()

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This commit is contained in:
Colin Walters 2011-06-21 23:24:07 -04:00
parent fa87399280
commit fdca8060aa
1 changed files with 10 additions and 18 deletions
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28
configure.ac
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@ -2582,8 +2582,8 @@ AM_CONDITIONAL(HAVE_GCC_BUILTINS_FOR_ATOMIC_OPERATIONS,
dnl ************************
dnl ** Check for futex(2) **
dnl ************************
AC_MSG_CHECKING([for futex(2) system call])
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([
AC_CACHE_CHECK(for futex(2) system call,
glib_cv_futex,AC_COMPILE_IFELSE([AC_LANG_PROGRAM([
#include <linux/futex.h>
#include <sys/syscall.h>
#include <unistd.h>
@ -2595,17 +2595,13 @@ main (void)
syscall (__NR_futex, NULL, FUTEX_WAKE, FUTEX_WAIT);
return 0;
}
])],
[
AC_MSG_RESULT(yes)
])],glib_cv_futex=yes,glib_cv_futex=no))
if test x"$glib_cv_futex" = xyes; then
AC_DEFINE(HAVE_FUTEX, 1, [we have the futex(2) system call])
],
[
AC_MSG_RESULT(no)
])
fi
AC_MSG_CHECKING([for eventfd(2) system call])
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([
AC_CACHE_CHECK(for eventfd(2) system call,
glib_cv_eventfd,AC_COMPILE_IFELSE([AC_LANG_PROGRAM([
#include <sys/eventfd.h>
#include <unistd.h>
],[
@ -2615,14 +2611,10 @@ main (void)
eventfd (0, EFD_CLOEXEC);
return 0;
}
])],
[
AC_MSG_RESULT(yes)
])],glib_cv_eventfd=yes,glib_cv_eventfd=no))
if test x"$glib_cv_eventfd" = x"yes"; then
AC_DEFINE(HAVE_EVENTFD, 1, [we have the eventfd(2) system call])
],
[
AC_MSG_RESULT(no)
])
fi
dnl ****************************************
dnl *** GLib POLL* compatibility defines ***