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