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