mirror of
https://github.com/ioacademy-jikim/debugging
synced 2025-06-10 09:26:15 +00:00
91 lines
3.1 KiB
Plaintext
91 lines
3.1 KiB
Plaintext
# HW_HEADER_TIME_H
|
|
# ------------------
|
|
# Define HAVE_TIME_H to 1 if <time.h> is available.
|
|
AC_DEFUN([HW_HEADER_TIME_H],
|
|
[
|
|
AC_PREREQ([2.60])dnl Older releases should work if AC_CHECK_HEADERS is used.
|
|
AC_CHECK_HEADERS_ONCE([time.h])
|
|
])# HW_HEADER_TIME_H
|
|
|
|
# HW_LIBRT_TIMERS
|
|
# -----------------
|
|
# Set $hw_cv_librt_timers and $hw_cv_librt_timers_posix to "yes" or "no",
|
|
# respectively. If the timer_create() function is available and
|
|
# POSIX compliant, then the system's timer_create(), timer_settime(),
|
|
# and timer_delete() functions are used. Otherwise, make sure
|
|
# the replacement functions will be built.
|
|
#
|
|
# In the case where we are cross compiling, the POSIX detection of
|
|
# the timer_create() function is skipped, and instead the usual check
|
|
# for the existence of all the timer_* functions is done using
|
|
# AC_REPLACE_FUNCS.
|
|
#
|
|
# If enable_timer_replacement=true, the replacements is forced to be built.
|
|
AC_DEFUN([HW_LIBRT_TIMERS],
|
|
[
|
|
AC_PREREQ([2.60])dnl 2.59 should work if some AC_TYPE_* macros are replaced.
|
|
AC_REQUIRE([HW_HEADER_TIME_H])dnl Our check evaluates HAVE_TIME_H.
|
|
|
|
if test "xtrue" != x"$enable_timer_replacement"; then
|
|
AC_CHECK_FUNC([timer_create],
|
|
[hw_cv_librt_timers=yes],
|
|
[hw_cv_librt_timers=no])
|
|
AS_IF([test "$hw_cv_librt_timers" = yes],
|
|
[AC_CACHE_CHECK([if timer_create is supported on the system],
|
|
[hw_cv_librt_timers_posix],
|
|
[AC_RUN_IFELSE(
|
|
[AC_LANG_PROGRAM(
|
|
[[#if HAVE_TIME_H
|
|
#include <time.h>
|
|
#endif
|
|
#include <errno.h>
|
|
static int test_timer_create()
|
|
{
|
|
timer_t timerid;
|
|
if(timer_create(CLOCK_REALTIME, NULL, &timerid) != 0)
|
|
{
|
|
/*
|
|
On this system, although the function is available,
|
|
no meaningful implementation is provided.
|
|
*/
|
|
if(errno == ENOSYS)
|
|
{
|
|
return 1;
|
|
}
|
|
}
|
|
return 0;
|
|
}]],
|
|
[[return test_timer_create();]])],
|
|
[hw_cv_librt_timers_posix=yes],
|
|
[hw_cv_librt_timers_posix=no],
|
|
[hw_cv_librt_timers_posix=autodetect])])],
|
|
[hw_cv_librt_timers_posix=no])
|
|
else
|
|
hw_cv_librt_timers_posix=no
|
|
fi
|
|
|
|
# If the system does not have a POSIX timer_create(), then use
|
|
# Check's reimplementation of the timer_* calls
|
|
AS_IF([test "$hw_cv_librt_timers_posix" = no],
|
|
[_HW_LIBRT_TIMERS_REPLACE])
|
|
|
|
# If we are cross compiling, do the normal check for the
|
|
# timer_* calls.
|
|
AS_IF([test "$hw_cv_librt_timers_posix" = autodetect],
|
|
[AC_REPLACE_FUNCS([timer_create timer_settime timer_delete])
|
|
AC_CHECK_DECLS([timer_create, timer_settime, timer_delete])])
|
|
])# HW_LIBRT_TIMERS
|
|
|
|
# _HW_LIBRT_TIMERS_REPLACE
|
|
# ------------------------
|
|
# Arrange for building timer_create.c, timer_settime.c, and
|
|
# timer_delete.c.
|
|
AC_DEFUN([_HW_LIBRT_TIMERS_REPLACE],
|
|
[
|
|
AS_IF([test "x$_hw_cv_librt_timers_replace_done" != xyes],
|
|
[AC_LIBOBJ([timer_create])
|
|
AC_LIBOBJ([timer_settime])
|
|
AC_LIBOBJ([timer_delete])
|
|
_hw_cv_librt_timers_replace_done=yes])
|
|
])# _HW_LIBRT_TIMERS_REPLACE
|