| 1 | dnl this file is part of libev, do not make local modifications |
1 | dnl this file is part of libev, do not make local modifications |
| 2 | dnl http://software.schmorp.de/pkg/libev |
2 | dnl http://software.schmorp.de/pkg/libev |
| 3 | |
3 | |
| 4 | dnl libev support |
4 | dnl libev support |
| 5 | AC_CHECK_HEADERS(sys/epoll.h sys/event.h sys/queue.h port.h poll.h sys/select.h) |
5 | AC_CHECK_HEADERS(sys/inotify.h sys/epoll.h sys/event.h port.h poll.h) |
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6 | AC_CHECK_HEADERS(sys/select.h sys/eventfd.h sys/signalfd.h linux/aio_abi.h) |
| 6 | |
7 | |
| 7 | AC_CHECK_FUNCS(epoll_ctl kqueue port_create poll select) |
8 | AC_CHECK_FUNCS(inotify_init epoll_ctl kqueue port_create poll select eventfd signalfd) |
| 8 | |
9 | |
| 9 | AC_CHECK_FUNC(clock_gettime, [], [ |
10 | AC_CHECK_FUNCS(clock_gettime, [], [ |
| 10 | if test -z "$LIBEV_M4_AVOID_LIBRT"; then |
11 | dnl on linux, try syscall wrapper first |
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12 | if test $(uname) = Linux; then |
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13 | AC_MSG_CHECKING(for clock_gettime syscall) |
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14 | AC_LINK_IFELSE([AC_LANG_PROGRAM( |
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15 | [#include <unistd.h> |
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16 | #include <sys/syscall.h> |
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17 | #include <time.h>], |
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18 | [struct timespec ts; int status = syscall (SYS_clock_gettime, CLOCK_REALTIME, &ts)])], |
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19 | [ac_have_clock_syscall=1 |
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20 | AC_DEFINE(HAVE_CLOCK_SYSCALL, 1, Define to 1 to use the syscall interface for clock_gettime) |
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21 | AC_MSG_RESULT(yes)], |
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22 | [AC_MSG_RESULT(no)]) |
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23 | fi |
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24 | if test -z "$LIBEV_M4_AVOID_LIBRT" && test -z "$ac_have_clock_syscall"; then |
| 11 | AC_CHECK_LIB(rt, clock_gettime) |
25 | AC_CHECK_LIB(rt, clock_gettime) |
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26 | unset ac_cv_func_clock_gettime |
| 12 | AC_CHECK_FUNCS(clock_gettime) |
27 | AC_CHECK_FUNCS(clock_gettime) |
| 13 | fi |
28 | fi |
| 14 | ]) |
29 | ]) |
| 15 | |
30 | |
| 16 | AC_CHECK_LIB(m, ceil) |
31 | AC_CHECK_FUNCS(nanosleep, [], [ |
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32 | if test -z "$LIBEV_M4_AVOID_LIBRT"; then |
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33 | AC_CHECK_LIB(rt, nanosleep) |
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34 | unset ac_cv_func_nanosleep |
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35 | AC_CHECK_FUNCS(nanosleep) |
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36 | fi |
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37 | ]) |
| 17 | |
38 | |
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39 | if test -z "$LIBEV_M4_AVOID_LIBM"; then |
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40 | LIBM=m |
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41 | fi |
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42 | AC_SEARCH_LIBS(floor, $LIBM, [AC_DEFINE(HAVE_FLOOR, 1, Define to 1 if the floor function is available)]) |
| 18 | |
43 | |
| 19 | |
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