diff --git a/.gitignore b/.gitignore
index bd6ba1c71e..3ce57ccd58 100644
--- a/.gitignore
+++ b/.gitignore
@@ -47,6 +47,7 @@ test-qmp-output-visitor
 test-string-input-visitor
 test-string-output-visitor
 test-visitor-serialization
+fsdev/virtfs-proxy-helper
 fsdev/virtfs-proxy-helper.1
 fsdev/virtfs-proxy-helper.pod
 .gdbinit
diff --git a/configure b/configure
index ecdb33a58e..728caca0d0 100755
--- a/configure
+++ b/configure
@@ -1359,6 +1359,14 @@ esac
 
 fi
 
+##########################################
+# pkg-config probe
+
+if ! has "$pkg_config_exe"; then
+  echo "Error: pkg-config binary '$pkg_config_exe' not found"
+  exit 1
+fi
+
 ##########################################
 # NPTL probe
 
@@ -1589,14 +1597,6 @@ if test "$xen_pci_passthrough" != "no"; then
   fi
 fi
 
-##########################################
-# pkg-config probe
-
-if ! has "$pkg_config_exe"; then
-  echo "Error: pkg-config binary '$pkg_config_exe' not found"
-  exit 1
-fi
-
 ##########################################
 # libtool probe
 
diff --git a/hw/arm_gic.c b/hw/arm_gic.c
index 8d769de4f5..b6062c4241 100644
--- a/hw/arm_gic.c
+++ b/hw/arm_gic.c
@@ -76,7 +76,7 @@ void gic_update(GICState *s)
         if (best_prio < s->priority_mask[cpu]) {
             s->current_pending[cpu] = best_irq;
             if (best_prio < s->running_priority[cpu]) {
-                DPRINTF("Raised pending IRQ %d\n", best_irq);
+                DPRINTF("Raised pending IRQ %d (cpu %d)\n", best_irq, cpu);
                 level = 1;
             }
         }
diff --git a/hw/pflash_cfi01.c b/hw/pflash_cfi01.c
index 7d040b508a..931264ff8c 100644
--- a/hw/pflash_cfi01.c
+++ b/hw/pflash_cfi01.c
@@ -46,15 +46,15 @@
 
 #define PFLASH_BUG(fmt, ...) \
 do { \
-    printf("PFLASH: Possible BUG - " fmt, ## __VA_ARGS__); \
+    fprintf(stderr, "PFLASH: Possible BUG - " fmt, ## __VA_ARGS__); \
     exit(1); \
 } while(0)
 
 /* #define PFLASH_DEBUG */
 #ifdef PFLASH_DEBUG
-#define DPRINTF(fmt, ...)                          \
-do {                                               \
-    printf("PFLASH: " fmt , ## __VA_ARGS__);       \
+#define DPRINTF(fmt, ...)                                   \
+do {                                                        \
+    fprintf(stderr, "PFLASH: " fmt , ## __VA_ARGS__);       \
 } while (0)
 #else
 #define DPRINTF(fmt, ...) do { } while (0)
@@ -438,9 +438,9 @@ static void pflash_write(pflash_t *pfl, hwaddr offset,
     return;
 
  error_flash:
-    printf("%s: Unimplemented flash cmd sequence "
-           "(offset " TARGET_FMT_plx ", wcycle 0x%x cmd 0x%x value 0x%x)\n",
-           __func__, offset, pfl->wcycle, pfl->cmd, value);
+    qemu_log_mask(LOG_UNIMP, "%s: Unimplemented flash cmd sequence "
+                  "(offset " TARGET_FMT_plx ", wcycle 0x%x cmd 0x%x value 0x%x)"
+                  "\n", __func__, offset, pfl->wcycle, pfl->cmd, value);
 
  reset_flash:
     memory_region_rom_device_set_readable(&pfl->mem, true);
diff --git a/hw/pflash_cfi02.c b/hw/pflash_cfi02.c
index f918e36580..c60ae831b4 100644
--- a/hw/pflash_cfi02.c
+++ b/hw/pflash_cfi02.c
@@ -45,9 +45,9 @@
 
 //#define PFLASH_DEBUG
 #ifdef PFLASH_DEBUG
-#define DPRINTF(fmt, ...)                          \
-do {                                               \
-    printf("PFLASH: " fmt , ## __VA_ARGS__);       \
+#define DPRINTF(fmt, ...)                                  \
+do {                                                       \
+    fprintf(stderr "PFLASH: " fmt , ## __VA_ARGS__);       \
 } while (0)
 #else
 #define DPRINTF(fmt, ...) do { } while (0)
diff --git a/hw/vmmouse.c b/hw/vmmouse.c
index 6338efa1c3..578122c9f5 100644
--- a/hw/vmmouse.c
+++ b/hw/vmmouse.c
@@ -252,7 +252,6 @@ static void vmmouse_reset(DeviceState *d)
 {
     VMMouseState *s = container_of(d, VMMouseState, dev.qdev);
 
-    s->status = 0xffff;
     s->queue_size = VMMOUSE_QUEUE_SIZE;
 
     vmmouse_disable(s);
diff --git a/hw/zynq_slcr.c b/hw/zynq_slcr.c
index dde4306195..f55ab8d8a9 100644
--- a/hw/zynq_slcr.c
+++ b/hw/zynq_slcr.c
@@ -334,7 +334,7 @@ static uint64_t zynq_slcr_read(void *opaque, hwaddr offset,
 {
     uint32_t ret = zynq_slcr_read_imp(opaque, offset);
 
-    DB_PRINT("addr: %08x data: %08x\n", offset, ret);
+    DB_PRINT("addr: %08x data: %08x\n", (unsigned)offset, (unsigned)ret);
     return ret;
 }
 
@@ -343,7 +343,7 @@ static void zynq_slcr_write(void *opaque, hwaddr offset,
 {
     ZynqSLCRState *s = (ZynqSLCRState *)opaque;
 
-    DB_PRINT("offset: %08x data: %08x\n", offset, (unsigned)val);
+    DB_PRINT("offset: %08x data: %08x\n", (unsigned)offset, (unsigned)val);
 
     switch (offset) {
     case 0x00: /* SCL */
@@ -476,7 +476,8 @@ static void zynq_slcr_write(void *opaque, hwaddr offset,
             break;
         default:
         bad_reg:
-            DB_PRINT("Bad register write %x <= %08x\n", (int)offset, val);
+            DB_PRINT("Bad register write %x <= %08x\n", (int)offset,
+                     (unsigned)val);
         }
     } else {
         DB_PRINT("SCLR registers are locked. Unlock them first\n");
diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index 31d5276465..275260a6ff 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -28,6 +28,7 @@
 #include <fcntl.h>
 #include <time.h>
 #include <limits.h>
+#include <grp.h>
 #include <sys/types.h>
 #include <sys/ipc.h>
 #include <sys/msg.h>
@@ -584,7 +585,6 @@ extern int personality(int);
 extern int flock(int, int);
 extern int setfsuid(int);
 extern int setfsgid(int);
-extern int setgroups(int, gid_t *);
 
 /* ARM EABI and MIPS expect 64bit types aligned even on pairs or registers */
 #ifdef TARGET_ARM
diff --git a/net/hub.c b/net/hub.c
index be413012bb..3b2d1ffcd2 100644
--- a/net/hub.c
+++ b/net/hub.c
@@ -256,7 +256,7 @@ void net_hub_info(Monitor *mon)
 /**
  * Get the hub id that a client is connected to
  *
- * @id              Pointer for hub id output, may be NULL
+ * @id: Pointer for hub id output, may be NULL
  */
 int net_hub_id_for_client(NetClientState *nc, int *id)
 {
diff --git a/user-exec.c b/user-exec.c
index 1185cb03c8..5863b9f362 100644
--- a/user-exec.c
+++ b/user-exec.c
@@ -436,7 +436,7 @@ int cpu_signal_handler(int host_signum, void *pinfo,
     unsigned long pc;
     int is_write;
 
-#if (__GLIBC__ < 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ <= 3))
+#if defined(__GLIBC__) && (__GLIBC__ < 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ <= 3))
     pc = uc->uc_mcontext.gregs[R15];
 #else
     pc = uc->uc_mcontext.arm_pc;