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main_repo / deps / libev / libev.m4 @ c5183738
History | View | Annotate | Download (1.33 KB)
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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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