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40 lines
1.3 KiB
40 lines
1.3 KiB
dnl this file is part of libev, do not make local modifications
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dnl http://software.schmorp.de/pkg/libev
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dnl libev support
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AC_CHECK_HEADERS(sys/inotify.h sys/epoll.h sys/event.h sys/queue.h port.h poll.h sys/select.h sys/eventfd.h)
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AC_CHECK_FUNCS(inotify_init epoll_ctl kqueue port_create poll select eventfd)
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AC_CHECK_FUNC(clock_gettime, [], [
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dnl on linux, try syscall wrapper first
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if test $(uname) = Linux; then
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AC_MSG_CHECKING(for clock_gettime syscall)
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AC_LINK_IFELSE([AC_LANG_PROGRAM(
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[#include <syscall.h>
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#include <time.h>],
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[struct timespec ts; int status = syscall (SYS_clock_gettime, CLOCK_REALTIME, &ts)])],
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[ac_have_clock_syscall=1
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AC_DEFINE(HAVE_CLOCK_SYSCALL, 1, "use syscall interface for clock_gettime")
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AC_MSG_RESULT(yes)],
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[AC_MSG_RESULT(no)])
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fi
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if test -z "$LIBEV_M4_AVOID_LIBRT" && test -z "$ac_have_clock_syscall"; then
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AC_CHECK_LIB(rt, clock_gettime)
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unset ac_cv_func_clock_gettime
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AC_CHECK_FUNCS(clock_gettime)
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fi
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])
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AC_CHECK_FUNC(nanosleep, [], [
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if test -z "$LIBEV_M4_AVOID_LIBRT"; then
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AC_CHECK_LIB(rt, nanosleep)
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unset ac_cv_func_nanosleep
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AC_CHECK_FUNCS(nanosleep)
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fi
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])
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AC_CHECK_LIB(m, ceil)
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