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Comparing libev/libev.m4 (file contents):
Revision 1.11 by root, Thu Nov 20 00:35:10 2008 UTC vs.
Revision 1.18 by root, Fri Nov 22 14:32:13 2019 UTC

1dnl this file is part of libev, do not make local modifications 1dnl this file is part of libev, do not make local modifications
2dnl http://software.schmorp.de/pkg/libev 2dnl http://software.schmorp.de/pkg/libev
3 3
4dnl libev support 4dnl libev support
5AC_CHECK_HEADERS(sys/inotify.h sys/epoll.h sys/event.h sys/queue.h port.h poll.h sys/select.h sys/eventfd.h) 5AC_CHECK_HEADERS(sys/inotify.h sys/epoll.h sys/event.h port.h poll.h sys/timerfd.h)
6AC_CHECK_HEADERS(sys/select.h sys/eventfd.h sys/signalfd.h linux/aio_abi.h linux/fs.h)
6 7
7AC_CHECK_FUNCS(inotify_init epoll_ctl kqueue port_create poll select eventfd) 8AC_CHECK_FUNCS(inotify_init epoll_ctl kqueue port_create poll select eventfd signalfd)
8 9
9AC_CHECK_FUNC(clock_gettime, [], [ 10AC_CHECK_FUNCS(clock_gettime, [], [
10 dnl on linux, try syscall wrapper first 11 dnl on linux, try syscall wrapper first
11 if test $(uname) = Linux; then 12 if test $(uname) = Linux; then
12 AC_MSG_CHECKING(for clock_gettime syscall) 13 AC_MSG_CHECKING(for clock_gettime syscall)
13 AC_LINK_IFELSE([AC_LANG_PROGRAM( 14 AC_LINK_IFELSE([AC_LANG_PROGRAM(
15 [#include <unistd.h>
14 [#include <syscall.h> 16 #include <sys/syscall.h>
15 #include <time.h>], 17 #include <time.h>],
16 [struct timespec ts; int status = syscall (SYS_clock_gettime, CLOCK_REALTIME, &ts)])], 18 [struct timespec ts; int status = syscall (SYS_clock_gettime, CLOCK_REALTIME, &ts)])],
17 [ac_have_clock_syscall=1 19 [ac_have_clock_syscall=1
18 AC_DEFINE(HAVE_CLOCK_SYSCALL, 1, "use syscall interface for clock_gettime") 20 AC_DEFINE(HAVE_CLOCK_SYSCALL, 1, Define to 1 to use the syscall interface for clock_gettime)
19 AC_MSG_RESULT(yes)], 21 AC_MSG_RESULT(yes)],
20 [AC_MSG_RESULT(no)]) 22 [AC_MSG_RESULT(no)])
21 fi 23 fi
22 if test -z "$LIBEV_M4_AVOID_LIBRT" && test -z "$ac_have_clock_syscall"; then 24 if test -z "$LIBEV_M4_AVOID_LIBRT" && test -z "$ac_have_clock_syscall"; then
23 AC_CHECK_LIB(rt, clock_gettime) 25 AC_CHECK_LIB(rt, clock_gettime)
24 unset ac_cv_func_clock_gettime 26 unset ac_cv_func_clock_gettime
25 AC_CHECK_FUNCS(clock_gettime) 27 AC_CHECK_FUNCS(clock_gettime)
26 fi 28 fi
27]) 29])
28 30
29AC_CHECK_FUNC(nanosleep, [], [ 31AC_CHECK_FUNCS(nanosleep, [], [
30 if test -z "$LIBEV_M4_AVOID_LIBRT"; then 32 if test -z "$LIBEV_M4_AVOID_LIBRT"; then
31 AC_CHECK_LIB(rt, nanosleep) 33 AC_CHECK_LIB(rt, nanosleep)
32 unset ac_cv_func_nanosleep 34 unset ac_cv_func_nanosleep
33 AC_CHECK_FUNCS(nanosleep) 35 AC_CHECK_FUNCS(nanosleep)
34 fi 36 fi
35]) 37])
36 38
37AC_CHECK_LIB(m, ceil) 39AC_CHECK_TYPE(__kernel_rwf_t, [
40 AC_DEFINE(HAVE_KERNEL_RWF_T, 1, Define to 1 if linux/fs.h defined kernel_rwf_t)
41], [], [#include <linux/fs.h>])
38 42
43if test -z "$LIBEV_M4_AVOID_LIBM"; then
44 LIBM=m
45fi
46AC_SEARCH_LIBS(floor, $LIBM, [AC_DEFINE(HAVE_FLOOR, 1, Define to 1 if the floor function is available)])
39 47
40

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