[config] configure.ac checks required features, updated porting

Added a real config.rpath
Fixed build date calc for BSD
Require some needed headers at configure time
Correctly check libav functions using pkg-config flags
Made checks for some Linux features available on other ports
Fixed porting issue with antlr dep files
Added default HOST_NAME_MAX if not defined
Added missing libav header

src/Makefile.am

@@ -170,7 +170,7 @@ EXTRA_DIST = \
 # ANTLR dependency files (bypass circular dependency of .g on .tokens)
 %.u: %.g
 	$(AM_V_GEN)$(ANTLR) -depend -fo . $< > $@
-	$(AM_V_at)sed -n -e '/^.*\.g[ ]*:\(.*\)/ { s//\1/;h;d }' -e '/\.tokens.*:/ { p;d }' -e '/:/ { G;s/\n/ /;p }' $@ > $@-t
+	$(AM_V_at)sed -n -e '/^.*\.g[ ]*:\(.*\)/ { s//\1/;h;d; }' -e '/\.tokens.*:/ { p;d; }' -e '/:/ { G;s/\n/ /;p; }' $@ > $@-t
 	$(AM_V_at)mv $@-t $@
 
 -include $(ANTLR_DEPS)

src/commands.c

@@ -183,11 +183,11 @@ commands_base_new(struct event_base *evbase, command_exit_cb exit_cb)
       return NULL;
     }
 
-# if defined(__linux__)
+#ifdef HAVE_PIPE2
   ret = pipe2(cmdbase->command_pipe, O_CLOEXEC);
-# else
+#else
   ret = pipe(cmdbase->command_pipe);
-# endif
+#endif
   if (ret < 0)
     {
       DPRINTF(E_LOG, L_MAIN, "Could not create command pipe: %s\n", strerror(errno));

src/filescanner_ffmpeg.c

@@ -25,9 +25,7 @@
 #include <string.h>
 #include <time.h>
 
-#ifdef HAVE_STDINT_H
 #include <stdint.h>
-#endif
 
 #include <libavcodec/avcodec.h>
 #include <libavformat/avformat.h>

src/main.c

@@ -37,7 +37,7 @@
 #include <grp.h>
 #include <stdint.h>
 
-#if defined(__linux__)
+#ifdef HAVE_SIGNALFD
 # include <sys/signalfd.h>
 #elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
 # include <sys/time.h>
@@ -334,7 +334,7 @@ register_services(char *ffid, int no_rsp, int no_daap, int mdns_no_mpd)
 }
 
 
-#if defined(__linux__)
+#ifdef HAVE_SIGNALFD
 static void
 signal_signalfd_cb(int fd, short event, void *arg)
 {
@@ -813,7 +813,7 @@ main(int argc, char **argv)
   /* Register this CNAME with mDNS for OAuth */
   mdns_cname("forked-daapd.local");
 
-#if defined(__linux__)
+#ifdef HAVE_SIGNALFD
   /* Set up signal fd */
   sigfd = signalfd(-1, &sigs, SFD_NONBLOCK | SFD_CLOEXEC);
   if (sigfd < 0)

src/mdns_avahi.c

@@ -630,6 +630,11 @@ entry_group_callback(AvahiEntryGroup *g, AvahiEntryGroupState state, AVAHI_GCC_U
     }
 }
 
+#ifndef HOST_NAME_MAX
+/* some systems want programs to query this, just define a reasonable limit */
+#define HOST_NAME_MAX 64
+#endif
+
 static int
 create_group_entry(struct mdns_group_entry *ge, int commit)
 {

src/player.c

@@ -35,7 +35,7 @@
 # include <pthread_np.h>
 #endif
 
-#if defined(__linux__)
+#ifdef HAVE_TIMERFD
 # include <sys/timerfd.h>
 #elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
 # include <signal.h>
@@ -193,7 +193,7 @@ static char shuffle;
 static char consume;
 
 /* Playback timer */
-#if defined(__linux__)
+#ifdef HAVE_TIMERFD
 static int pb_timer_fd;
 #else
 timer_t pb_timer;
@@ -389,7 +389,7 @@ pb_timer_start(void)
   tick.it_interval = tick_interval;
   tick.it_value = tick_interval;
 
-#if defined(__linux__)
+#ifdef HAVE_TIMERFD
   ret = timerfd_settime(pb_timer_fd, 0, &tick, NULL);
 #else
   ret = timer_settime(pb_timer, 0, &tick, NULL);
@@ -412,7 +412,7 @@ pb_timer_stop(void)
 
   memset(&tick, 0, sizeof(struct itimerspec));
 
-#if defined(__linux__)
+#ifdef HAVE_TIMERFD
   ret = timerfd_settime(pb_timer_fd, 0, &tick, NULL);
 #else
   ret = timer_settime(pb_timer, 0, &tick, NULL);
@@ -1451,7 +1451,7 @@ player_playback_cb(int fd, short what, void *arg)
 
   // Check if we missed any timer expirations
   overrun = 0;
-#if defined(__linux__)
+#ifdef HAVE_TIMERFD
   ret = read(fd, &overrun, sizeof(overrun));
   if (ret <= 0)
     DPRINTF(E_LOG, L_PLAYER, "Error reading timer\n");
@@ -1463,7 +1463,7 @@ player_playback_cb(int fd, short what, void *arg)
     DPRINTF(E_LOG, L_PLAYER, "Error getting timer overrun\n");
   else
     overrun = ret;
-#endif /* __linux__ */
+#endif /* HAVE_TIMERFD */
 
   // The reason we get behind the playback timer may be that we are playing a 
   // network stream OR that the source is slow to open OR some interruption.
@@ -3479,7 +3479,7 @@ player_init(void)
   tick_interval.tv_nsec = interval;
 
   // Create the playback timer
-#if defined(__linux__)
+#ifdef HAVE_TIMERFD
   pb_timer_fd = timerfd_create(CLOCK_MONOTONIC, TFD_CLOEXEC | TFD_NONBLOCK);
   ret = pb_timer_fd;
 #else
@@ -3512,7 +3512,7 @@ player_init(void)
       goto evbase_fail;
     }
 
-#if defined(__linux__)
+#ifdef HAVE_TIMERFD
   pb_timer_ev = event_new(evbase_player, pb_timer_fd, EV_READ | EV_PERSIST, player_playback_cb, NULL);
 #else
   pb_timer_ev = event_new(evbase_player, SIGALRM, EV_SIGNAL | EV_PERSIST, player_playback_cb, NULL);
@@ -3557,7 +3557,7 @@ player_init(void)
  evbase_fail:
   evbuffer_free(audio_buf);
  audio_fail:
-#if defined(__linux__)
+#ifdef HAVE_TIMERFD
   close(pb_timer_fd);
 #else
   timer_delete(pb_timer);
@@ -3586,7 +3586,7 @@ player_deinit(void)
   free(history);
 
   pb_timer_stop();
-#if defined(__linux__)
+#ifdef HAVE_TIMERFD
   close(pb_timer_fd);
 #else
   timer_delete(pb_timer);

src/transcode.c

@@ -32,6 +32,7 @@
 #include <libavutil/opt.h>
 #include <libavutil/time.h>
 #include <libavutil/pixdesc.h>
+#include <libavutil/channel_layout.h>
 
 #ifdef HAVE_LIBAVFILTER
 # include <libavfilter/avcodec.h>