From b93bfc9ec608881e9343f1841bf15954808b202c Mon Sep 17 00:00:00 2001
From: "hyunghwan.chung" <hyunghwan.chung@c9d47f8d-4fed-4a2f-8cad-691f5fbe3904>
Date: Sun, 7 May 2017 08:58:34 +0000
Subject: [PATCH] added header file checks for io multiplexer and dynamic
 linker in configure.ac

---
 moo/configure        | 25 ++++++++++++++++++++++
 moo/configure.ac     |  2 ++
 moo/lib/main.c       | 49 ++++++++++++++++++++++++++++----------------
 moo/lib/moo-cfg.h.in |  9 ++++++++
 4 files changed, 67 insertions(+), 18 deletions(-)

diff --git a/moo/configure b/moo/configure
index 43d3822..fe3bf86 100755
--- a/moo/configure
+++ b/moo/configure
@@ -18850,6 +18850,31 @@ fi
 
 done
 
+for ac_header in dlfcn.h
+do :
+  ac_fn_c_check_header_mongrel "$LINENO" "dlfcn.h" "ac_cv_header_dlfcn_h" "$ac_includes_default"
+if test "x$ac_cv_header_dlfcn_h" = xyes; then :
+  cat >>confdefs.h <<_ACEOF
+#define HAVE_DLFCN_H 1
+_ACEOF
+
+fi
+
+done
+
+for ac_header in sys/devpoll.h sys/epoll.h poll.h
+do :
+  as_ac_Header=`$as_echo "ac_cv_header_$ac_header" | $as_tr_sh`
+ac_fn_c_check_header_mongrel "$LINENO" "$ac_header" "$as_ac_Header" "$ac_includes_default"
+if eval test \"x\$"$as_ac_Header"\" = x"yes"; then :
+  cat >>confdefs.h <<_ACEOF
+#define `$as_echo "HAVE_$ac_header" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+
+done
+
 for ac_header in dyncall.h
 do :
   ac_fn_c_check_header_mongrel "$LINENO" "dyncall.h" "ac_cv_header_dyncall_h" "$ac_includes_default"
diff --git a/moo/configure.ac b/moo/configure.ac
index 2850baf..67b9e0a 100644
--- a/moo/configure.ac
+++ b/moo/configure.ac
@@ -152,6 +152,8 @@ dnl check header files.
 AC_HEADER_STDC
 AC_CHECK_HEADERS([stddef.h wchar.h wctype.h errno.h signal.h fcntl.h dirent.h])
 AC_CHECK_HEADERS([time.h sys/time.h utime.h spawn.h execinfo.h ucontext.h])
+AC_CHECK_HEADERS([dlfcn.h])
+AC_CHECK_HEADERS([sys/devpoll.h sys/epoll.h poll.h])
 AC_CHECK_HEADERS([dyncall.h])
 AC_CHECK_HEADERS([xcb/xcb.h])
 
diff --git a/moo/lib/main.c b/moo/lib/main.c
index 8ef7e47..08f6adc 100644
--- a/moo/lib/main.c
+++ b/moo/lib/main.c
@@ -62,9 +62,11 @@
 #	if defined(MOO_ENABLE_LIBLTDL)
 #		include <ltdl.h>
 #		define USE_LTDL
-#	else
+#	elif defined(HAVE_DLFCN_H)
 #		include <dlfcn.h>
 #		error NOT IMPLEMENTED
+#	else
+#		error UNSUPPORTED DYNAMIC LINKER
 #	endif
 
 #	if defined(HAVE_TIME_H)
@@ -80,27 +82,38 @@
 #	include <unistd.h>
 #	include <fcntl.h>
 
-#if defined(__sun) && defined(__SVR4)
-	/* solaris */
-#	include <sys/devpoll.h>
-#	define USE_DEVPOLL
-#	define XPOLLIN POLLIN
-#	define XPOLLOUT POLLOUT
-#	define XPOLLERR POLLERR
-#	define XPOLLHUP POLLHUP
-#else
-#	include <sys/epoll.h>
-#	define USE_EPOLL
-#	define XPOLLIN EPOLLIN
-#	define XPOLLOUT EPOLLOUT
-#	define XPOLLERR EPOLLERR
-#	define XPOLLHUP EPOLLHUP
-#endif
-
 #	if defined(USE_THREAD)
 #		include <pthread.h>
 #		include <sched.h>
 #	endif
+
+#	if defined(HAVE_SYS_DEVPOLL_H)
+		/* solaris */
+#		include <sys/devpoll.h>
+#		define USE_DEVPOLL
+#		define XPOLLIN POLLIN
+#		define XPOLLOUT POLLOUT
+#		define XPOLLERR POLLERR
+#		define XPOLLHUP POLLHUP
+#	elif defined(HAVE_SYS_EPOLL_H)
+		/* linux */
+#		include <sys/epoll.h>
+#		define USE_EPOLL
+#		define XPOLLIN EPOLLIN
+#		define XPOLLOUT EPOLLOUT
+#		define XPOLLERR EPOLLERR
+#		define XPOLLHUP EPOLLHUP
+#	elif defined(HAVE_POLL_H)
+#		include <poll.h>
+#		define USE_POLL
+#		define XPOLLIN POLLIN
+#		define XPOLLOUT POLLOUT
+#		define XPOLLERR POLLERR
+#		define XPOLLHUP POLLHUP
+#	else
+#		error UNSUPPORTED MULTIPLEXER
+#	endif
+
 #endif
 
 #if !defined(MOO_DEFAULT_PFMODPREFIX)
diff --git a/moo/lib/moo-cfg.h.in b/moo/lib/moo-cfg.h.in
index a5917c2..fb5882b 100644
--- a/moo/lib/moo-cfg.h.in
+++ b/moo/lib/moo-cfg.h.in
@@ -163,6 +163,9 @@
 /* Define to 1 if you have the `opendir' function. */
 #undef HAVE_OPENDIR
 
+/* Define to 1 if you have the <poll.h> header file. */
+#undef HAVE_POLL_H
+
 /* Define to 1 if you have the `powq' function. */
 #undef HAVE_POWQ
 
@@ -238,9 +241,15 @@
 /* Define to 1 if you have the `swapcontext' function. */
 #undef HAVE_SWAPCONTEXT
 
+/* Define to 1 if you have the <sys/devpoll.h> header file. */
+#undef HAVE_SYS_DEVPOLL_H
+
 /* Define to 1 if you have the <sys/dl.h> header file. */
 #undef HAVE_SYS_DL_H
 
+/* Define to 1 if you have the <sys/epoll.h> header file. */
+#undef HAVE_SYS_EPOLL_H
+
 /* Define to 1 if you have the <sys/stat.h> header file. */
 #undef HAVE_SYS_STAT_H