diff --git a/litex/soc/interconnect/wishbonebridge.py b/litex/soc/interconnect/wishbonebridge.py
index 3f5fc89f5..00ec4a0ce 100644
--- a/litex/soc/interconnect/wishbonebridge.py
+++ b/litex/soc/interconnect/wishbonebridge.py
@@ -67,7 +67,7 @@ class WishboneStreamingBridge(Module):
         ]
 
         fsm = ResetInserter()(FSM(reset_state="IDLE"))
-        timer = WaitTimer(clk_freq//10)
+        timer = WaitTimer(int(clk_freq//10))
         self.submodules += fsm, timer
         self.comb += [
             fsm.reset.eq(timer.done),
diff --git a/litex/soc/software/include/base/stdlib.h b/litex/soc/software/include/base/stdlib.h
index 448b2f670..a8af6cdf2 100644
--- a/litex/soc/software/include/base/stdlib.h
+++ b/litex/soc/software/include/base/stdlib.h
@@ -46,7 +46,7 @@ static inline long int labs(long int x)
 	return x > 0 ? x : -x;
 }
 
-unsigned long strtoul(const char *nptr, char **endptr, int base);
+unsigned long strtoul(const char *nptr, char **endptr, unsigned int base);
 long strtol(const char *nptr, char **endptr, int base);
 double strtod(const char *str, char **endptr);
 
diff --git a/litex/soc/software/libbase/libc.c b/litex/soc/software/libbase/libc.c
index be48cf651..7a2728bb7 100644
--- a/litex/soc/software/libbase/libc.c
+++ b/litex/soc/software/libbase/libc.c
@@ -374,7 +374,7 @@ void *memchr(const void *s, int c, size_t n)
  * @endptr: A pointer to the end of the parsed string will be placed here
  * @base: The number base to use
  */
-unsigned long strtoul(const char *nptr, char **endptr, int base)
+unsigned long strtoul(const char *nptr, char **endptr, unsigned int base)
 {
 	unsigned long result = 0,value;
 
@@ -535,7 +535,7 @@ char *number(char *buf, char *end, unsigned long num, int base, int size, int pr
  */
 int vscnprintf(char *buf, size_t size, const char *fmt, va_list args)
 {
-	int i;
+        size_t i;
 
 	i=vsnprintf(buf,size,fmt,args);
 	return (i >= size) ? (size - 1) : i;
@@ -579,7 +579,7 @@ int snprintf(char * buf, size_t size, const char *fmt, ...)
 int scnprintf(char * buf, size_t size, const char *fmt, ...)
 {
 	va_list args;
-	int i;
+	size_t i;
 
 	va_start(args, fmt);
 	i = vsnprintf(buf, size, fmt, args);
diff --git a/litex/soc/software/libbase/qsort.c b/litex/soc/software/libbase/qsort.c
index 4df3987a0..7fab2f4dc 100644
--- a/litex/soc/software/libbase/qsort.c
+++ b/litex/soc/software/libbase/qsort.c
@@ -196,15 +196,15 @@ loop:
   pn = (char *) base + nmemb * size;
   r = min(pa - (char *)base, pb - pa);
   vecswap(base, pb - r, r);
-  r = min(pd - pc, pn - pd - size);
+  r = min(pd - pc, pn - pd - (int)size);
   vecswap(pb, pn - r, r);
 
-  if ((r = pb - pa) > size)
+  if ((r = pb - pa) > (int)size)
     {
       qsort(base, r / size, size, compar);
     }
 
-  if ((r = pd - pc) > size)
+  if ((r = pd - pc) > (int)size)
     {
       /* Iterate rather than recurse to save stack space */
       base = pn - r;
diff --git a/litex/soc/software/libbase/strtod.c b/litex/soc/software/libbase/strtod.c
index e79a1eeb6..38b4b3913 100644
--- a/litex/soc/software/libbase/strtod.c
+++ b/litex/soc/software/libbase/strtod.c
@@ -107,7 +107,7 @@ double strtod(const char *str, char **endptr)
   switch (*p)
     {
     case '-':
-      negative = 1; /* Fall through to increment position */
+      negative = 1; /* FALLTHRU */ /* to increment position */
     case '+':
       p++;
     }
@@ -166,7 +166,7 @@ double strtod(const char *str, char **endptr)
       switch(*++p)
         {
         case '-':
-          negative = 1;   /* Fall through to increment pos */
+          negative = 1;   /* FALLTHRU */ /* to increment pos */
         case '+':
           p++;
         }
diff --git a/litex/soc/software/libbase/vsnprintf.c b/litex/soc/software/libbase/vsnprintf.c
index e056d328b..1785676f3 100644
--- a/litex/soc/software/libbase/vsnprintf.c
+++ b/litex/soc/software/libbase/vsnprintf.c
@@ -262,6 +262,7 @@ int vsnprintf(char *buf, size_t size, const char *fmt, va_list args)
 
 			case 'X':
 				flags |= PRINTF_LARGE;
+                                /* FALLTHRU */
 			case 'x':
 				base = 16;
 				break;