[PATCH 1/3] build: Use #ifdef to check for #defines

[pmeerw@xxxxxxxxxx (Peter Meerwald-Stadler)]

for example, in case HAVE_MEMFD is #undef, checking with #if HAVE_MEMFD
gives a warning (gcc 5.4.1, Ubuntu)

pulsecore/shm.c: In function 'sharedmem_create':
pulsecore/shm.c:208:5: warning: "HAVE_MEMFD" is not defined [-Wundef]
 #if HAVE_MEMFD

use #ifdef or #if defined() to check for presence of a #define

Signed-off-by: Peter Meerwald-Stadler <pmeerw at pmeerw.net>
---
 src/modules/dbus/module-dbus-protocol.c | 4 ++--
 src/pulsecore/dbus-util.c               | 4 ++--
 src/pulsecore/shm.c                     | 2 +-
 src/utils/padsp.c                       | 6 +++---
 4 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/src/modules/dbus/module-dbus-protocol.c b/src/modules/dbus/module-dbus-protocol.c
index 8079d6b..2cd206e 100644
--- a/src/modules/dbus/module-dbus-protocol.c
+++ b/src/modules/dbus/module-dbus-protocol.c
@@ -220,7 +220,7 @@ static void io_event_cb(pa_mainloop_api *mainloop, pa_io_event *e, int fd, pa_io
     unsigned int flags = 0;
     DBusWatch *watch = userdata;
 
-#if HAVE_DBUS_WATCH_GET_UNIX_FD
+#ifdef HAVE_DBUS_WATCH_GET_UNIX_FD
     pa_assert(fd == dbus_watch_get_unix_fd(watch));
 #else
     pa_assert(fd == dbus_watch_get_fd(watch));
@@ -291,7 +291,7 @@ static dbus_bool_t watch_add_cb(DBusWatch *watch, void *data) {
 
     ev = mainloop->io_new(
             mainloop,
-#if HAVE_DBUS_WATCH_GET_UNIX_FD
+#ifdef HAVE_DBUS_WATCH_GET_UNIX_FD
             dbus_watch_get_unix_fd(watch),
 #else
             dbus_watch_get_fd(watch),
diff --git a/src/pulsecore/dbus-util.c b/src/pulsecore/dbus-util.c
index d786af4..80e2866 100644
--- a/src/pulsecore/dbus-util.c
+++ b/src/pulsecore/dbus-util.c
@@ -100,7 +100,7 @@ static void handle_io_event(pa_mainloop_api *ea, pa_io_event *e, int fd, pa_io_e
     unsigned int flags = 0;
     DBusWatch *watch = userdata;
 
-#if HAVE_DBUS_WATCH_GET_UNIX_FD
+#ifdef HAVE_DBUS_WATCH_GET_UNIX_FD
     pa_assert(fd == dbus_watch_get_unix_fd(watch));
 #else
     pa_assert(fd == dbus_watch_get_fd(watch));
@@ -153,7 +153,7 @@ static dbus_bool_t add_watch(DBusWatch *watch, void *data) {
 
     ev = c->mainloop->io_new(
             c->mainloop,
-#if HAVE_DBUS_WATCH_GET_UNIX_FD
+#ifdef HAVE_DBUS_WATCH_GET_UNIX_FD
             dbus_watch_get_unix_fd(watch),
 #else
             dbus_watch_get_fd(watch),
diff --git a/src/pulsecore/shm.c b/src/pulsecore/shm.c
index 919d71a..0742cb8 100644
--- a/src/pulsecore/shm.c
+++ b/src/pulsecore/shm.c
@@ -205,7 +205,7 @@ static int sharedmem_create(pa_shm *m, pa_mem_type_t type, size_t size, mode_t m
         pa_assert_se(pa_close(fd) == 0);
         m->fd = -1;
     }
-#if HAVE_MEMFD
+#ifdef HAVE_MEMFD
     else
         m->fd = fd;
 #endif
diff --git a/src/utils/padsp.c b/src/utils/padsp.c
index 7a94114..f74122a 100644
--- a/src/utils/padsp.c
+++ b/src/utils/padsp.c
@@ -2285,7 +2285,7 @@ static int dsp_ioctl(fd_info *i, unsigned long request, void*argp, int *_errno)
             break;
         }
 
-#if HAVE_DECL_SOUND_PCM_READ_RATE
+#ifdef HAVE_DECL_SOUND_PCM_READ_RATE
         case SOUND_PCM_READ_RATE:
             debug(DEBUG_LEVEL_NORMAL, __FILE__": SOUND_PCM_READ_RATE\n");
 
@@ -2295,7 +2295,7 @@ static int dsp_ioctl(fd_info *i, unsigned long request, void*argp, int *_errno)
             break;
 #endif
 
-#if HAVE_DECL_SOUND_PCM_READ_CHANNELS
+#ifdef HAVE_DECL_SOUND_PCM_READ_CHANNELS
         case SOUND_PCM_READ_CHANNELS:
             debug(DEBUG_LEVEL_NORMAL, __FILE__": SOUND_PCM_READ_CHANNELS\n");
 
@@ -2305,7 +2305,7 @@ static int dsp_ioctl(fd_info *i, unsigned long request, void*argp, int *_errno)
             break;
 #endif
 
-#if HAVE_DECL_SOUND_PCM_READ_BITS
+#ifdef HAVE_DECL_SOUND_PCM_READ_BITS
         case SOUND_PCM_READ_BITS:
             debug(DEBUG_LEVEL_NORMAL, __FILE__": SOUND_PCM_READ_BITS\n");
 
-- 
2.7.4