diff --git a/configure b/configure
index 353d7889f7..499ad811a0 100755
--- a/configure
+++ b/configure
@@ -1323,7 +1323,7 @@ if test -z "$cross_prefix" ; then
 # big/little endian test
 cat > $TMPC << EOF
 #include <inttypes.h>
-int main(int argc, char ** argv){
+int main(void) {
         volatile uint32_t i=0x01234567;
         return (*((uint8_t*)(&i))) == 0x67;
 }
@@ -2896,7 +2896,7 @@ static int sfaa(int *ptr)
   return __sync_fetch_and_and(ptr, 0);
 }
 
-int main(int argc, char **argv)
+int main(void)
 {
   int val = 42;
   sfaa(&val);
diff --git a/net/tap-win32.c b/net/tap-win32.c
index f1801e22d2..22dad3f8fb 100644
--- a/net/tap-win32.c
+++ b/net/tap-win32.c
@@ -29,6 +29,7 @@
 #include "tap.h"
 
 #include "qemu-common.h"
+#include "clients.h"            /* net_init_tap */
 #include "net.h"
 #include "sysemu.h"
 #include "qemu-error.h"
diff --git a/target-arm/neon_helper.c b/target-arm/neon_helper.c
index 8bb5129d6a..9aa920d2ac 100644
--- a/target-arm/neon_helper.c
+++ b/target-arm/neon_helper.c
@@ -788,7 +788,6 @@ uint64_t HELPER(neon_qshlu_s64)(CPUARMState *env, uint64_t valop, uint64_t shift
     return helper_neon_qshl_u64(env, valop, shiftop);
 }
 
-/* FIXME: This is wrong.  */
 #define NEON_FN(dest, src1, src2) do { \
     int8_t tmp; \
     tmp = (int8_t)src2; \
diff --git a/targphys.h b/targphys.h
index 08cade9096..50911fd12f 100644
--- a/targphys.h
+++ b/targphys.h
@@ -3,6 +3,8 @@
 #ifndef TARGPHYS_H
 #define TARGPHYS_H
 
+#ifndef CONFIG_USER_ONLY
+
 #define TARGET_PHYS_ADDR_BITS 64
 /* target_phys_addr_t is the type of a physical address (its size can
    be different from 'target_ulong').  */
@@ -18,3 +20,5 @@ typedef uint64_t target_phys_addr_t;
 #define TARGET_PRIXPHYS PRIX64
 
 #endif
+
+#endif
diff --git a/ui/vnc-jobs.c b/ui/vnc-jobs.c
index 087b84d319..3c592b3f3d 100644
--- a/ui/vnc-jobs.c
+++ b/ui/vnc-jobs.c
@@ -33,21 +33,21 @@
 /*
  * Locking:
  *
- * There is three levels of locking:
+ * There are three levels of locking:
  * - jobs queue lock: for each operation on the queue (push, pop, isEmpty?)
  * - VncDisplay global lock: mainly used for framebuffer updates to avoid
  *                      screen corruption if the framebuffer is updated
- *			while the worker is doing something.
+ *                      while the worker is doing something.
  * - VncState::output lock: used to make sure the output buffer is not corrupted
- * 		   	 if two threads try to write on it at the same time
+ *                          if two threads try to write on it at the same time
  *
- * While the VNC worker thread is working, the VncDisplay global lock is hold
- * to avoid screen corruptions (this does not block vnc_refresh() because it
- * uses trylock()) but the output lock is not hold because the thread work on
+ * While the VNC worker thread is working, the VncDisplay global lock is held
+ * to avoid screen corruption (this does not block vnc_refresh() because it
+ * uses trylock()) but the output lock is not held because the thread works on
  * its own output buffer.
  * When the encoding job is done, the worker thread will hold the output lock
  * and copy its output buffer in vs->output.
-*/
+ */
 
 struct VncJobQueue {
     QemuCond cond;
@@ -62,7 +62,7 @@ typedef struct VncJobQueue VncJobQueue;
 
 /*
  * We use a single global queue, but most of the functions are
- * already reetrant, so we can easilly add more than one encoding thread
+ * already reentrant, so we can easily add more than one encoding thread
  */
 static VncJobQueue *queue;
 
diff --git a/ui/vnc.c b/ui/vnc.c
index 33e6386a6e..66ae93010f 100644
--- a/ui/vnc.c
+++ b/ui/vnc.c
@@ -1806,10 +1806,12 @@ static void set_encodings(VncState *vs, int32_t *encodings, size_t n_encodings)
             vs->features |= VNC_FEATURE_TIGHT_MASK;
             vs->vnc_encoding = enc;
             break;
+#ifdef CONFIG_VNC_PNG
         case VNC_ENCODING_TIGHT_PNG:
             vs->features |= VNC_FEATURE_TIGHT_PNG_MASK;
             vs->vnc_encoding = enc;
             break;
+#endif
         case VNC_ENCODING_ZLIB:
             vs->features |= VNC_FEATURE_ZLIB_MASK;
             vs->vnc_encoding = enc;