diff --git a/clientscr/gfx_switcher.C b/clientscr/gfx_switcher.C
index 2cbdb163d3..58015525ff 100644
--- a/clientscr/gfx_switcher.C
+++ b/clientscr/gfx_switcher.C
@@ -35,6 +35,7 @@
 
 #define CREATE_LOG 0
 
+#if CREATE_LOG
 #ifdef __cplusplus
 extern "C" {
 #endif
@@ -44,6 +45,7 @@ static void print_to_log_file(const char *format, ...);
 
 static void strip_cr(char *buf);
 #endif
+#endif  // if CREATE_LOG
 
 int main(int argc, char** argv) {
     passwd      *pw;
@@ -126,8 +128,8 @@ int main(int argc, char** argv) {
 }
 
 
-static void print_to_log_file(const char *format, ...) {
 #if CREATE_LOG
+static void print_to_log_file(const char *format, ...) {
     FILE *f;
     va_list args;
     char buf[256];
@@ -153,10 +155,8 @@ static void print_to_log_file(const char *format, ...) {
     fputs("\n", f);
     fflush(f);
     fclose(f);
-#endif
 }
 
-#if CREATE_LOG
 static void strip_cr(char *buf)
 {
     char *theCR;
diff --git a/lib/shmem.C b/lib/shmem.C
index d9d8bb840f..9a337ceedb 100644
--- a/lib/shmem.C
+++ b/lib/shmem.C
@@ -188,7 +188,7 @@ int create_shmem_mmap(char *path, size_t size, void** pp) {
 
     retval = fstat(fd, &sbuf);
     if (retval) return ERR_SHMGET;
-    if (sbuf.st_size < size) {
+    if (sbuf.st_size < (long)size) {
         // The following 2 lines extend the file and clear its new 
         // area to all zeros because they write beyond the old EOF. 
         // See the lseek man page for details.
diff --git a/mac_installer/uninstall.cpp b/mac_installer/uninstall.cpp
index f04f5aa9f1..8932c9bf03 100644
--- a/mac_installer/uninstall.cpp
+++ b/mac_installer/uninstall.cpp
@@ -44,7 +44,7 @@ static void DeleteLoginItem(void);
 static char * PersistentFGets(char *buf, size_t buflen, FILE *f);
 static pid_t FindProcessPID(char* name, pid_t thePID);
 static OSStatus QuitBOINCManager(OSType signature);
-static void SleepTicks(UInt32 ticksToSleep);
+//static void SleepTicks(UInt32 ticksToSleep);
 static Boolean ShowMessage(Boolean allowCancel, const char *format, ...);
 
 
@@ -217,6 +217,8 @@ static OSStatus DoUninstall(void) {
     system ("dscl . -delete /groups/boinc_master");
     system ("dscl . -delete /users/boinc_project");
     system ("dscl . -delete /groups/boinc_project");
+    
+    return 0;
 }
 
 
@@ -662,6 +664,7 @@ bail:
     return err;
 }
 
+#if 0
 // Uses usleep to sleep for full duration even if a signal is received
 static void SleepTicks(UInt32 ticksToSleep) {
     UInt32 endSleep, timeNow, ticksRemaining;
@@ -675,6 +678,7 @@ static void SleepTicks(UInt32 ticksToSleep) {
         ticksRemaining = endSleep - timeNow;
     } 
 }
+#endif
 
 
 static Boolean ShowMessage(Boolean allowCancel, const char *format, ...) {