diff --git a/Source/Core/Core/DSP/Jit/DSPJitRegCache.cpp b/Source/Core/Core/DSP/Jit/DSPJitRegCache.cpp
index 080476a3ec..a8f8e06ad2 100644
--- a/Source/Core/Core/DSP/Jit/DSPJitRegCache.cpp
+++ b/Source/Core/Core/DSP/Jit/DSPJitRegCache.cpp
@@ -1011,7 +1011,7 @@ void DSPJitRegCache::spillXReg(X64Reg reg)
 	if (xregs[reg].guest_reg <= DSP_REG_MAX_MEM_BACKED)
 	{
 		_assert_msg_(DSPLLE, !regs[xregs[reg].guest_reg].used,
-		             "to be spilled host reg %x(guest reg %x) still in use!",
+		             "to be spilled host reg %x(guest reg %zx) still in use!",
 		             reg, xregs[reg].guest_reg);
 
 		movToMemory(xregs[reg].guest_reg);
diff --git a/Source/Core/Core/PowerPC/Jit64IL/IR_X86.cpp b/Source/Core/Core/PowerPC/Jit64IL/IR_X86.cpp
index 584aaba32c..0ff84352f2 100644
--- a/Source/Core/Core/PowerPC/Jit64IL/IR_X86.cpp
+++ b/Source/Core/Core/PowerPC/Jit64IL/IR_X86.cpp
@@ -1666,7 +1666,7 @@ static void DoWriteCode(IRBuilder* ibuild, JitIL* Jit, u32 exitAddress) {
 			u64 val = ibuild->GetImmValue64(I);
 			if ((u32)val == val)
 				Jit->MOV(32, R(reg), Imm32(val));
-			else if ((s32)val == val)
+			else if ((s32)val == (s64)val)
 				Jit->MOV(64, R(reg), Imm32(val));
 			else
 				Jit->MOV(64, R(reg), Imm64(val));
diff --git a/Source/Core/DolphinWX/MainAndroid.cpp b/Source/Core/DolphinWX/MainAndroid.cpp
index b8f05b4684..4f0d8a5c10 100644
--- a/Source/Core/DolphinWX/MainAndroid.cpp
+++ b/Source/Core/DolphinWX/MainAndroid.cpp
@@ -110,8 +110,6 @@ bool Host_RendererHasFocus()
 
 void Host_ConnectWiimote(int wm_idx, bool connect) {}
 
-void Host_SetWaitCursor(bool enable){}
-
 void Host_UpdateStatusBar(const std::string& text, int filed){}
 
 void Host_SysMessage(const char *fmt, ...)
diff --git a/Source/Core/DolphinWX/MainNoGUI.cpp b/Source/Core/DolphinWX/MainNoGUI.cpp
index 6deebab93b..e8211a993f 100644
--- a/Source/Core/DolphinWX/MainNoGUI.cpp
+++ b/Source/Core/DolphinWX/MainNoGUI.cpp
@@ -41,15 +41,15 @@
 #import <Cocoa/Cocoa.h>
 #endif
 
-bool rendererHasFocus = true;
-bool running = true;
+static bool rendererHasFocus = true;
+static bool running = true;
 
 void Host_NotifyMapLoaded() {}
 void Host_RefreshDSPDebuggerWindow() {}
 
 void Host_ShowJitResults(unsigned int address){}
 
-Common::Event updateMainFrameEvent;
+static Common::Event updateMainFrameEvent;
 void Host_Message(int Id)
 {
 	switch (Id)
@@ -109,8 +109,6 @@ bool Host_RendererHasFocus()
 
 void Host_ConnectWiimote(int wm_idx, bool connect) {}
 
-void Host_SetWaitCursor(bool enable){}
-
 void Host_UpdateStatusBar(const std::string& text, int filed){}
 
 void Host_SysMessage(const char *fmt, ...)
@@ -137,7 +135,7 @@ void Host_SetWiiMoteConnectionState(int _State) {}
 void Host_ShowVideoConfig(void*, const std::string&, const std::string&) {}
 
 #if HAVE_X11
-void X11_MainLoop()
+static void X11_MainLoop()
 {
 	bool fullscreen = SConfig::GetInstance().m_LocalCoreStartupParameter.bFullscreen;
 	while (!Core::IsRunning())
@@ -271,7 +269,7 @@ void X11_MainLoop()
 #endif
 
 #if HAVE_WAYLAND
-void Wayland_MainLoop()
+static void Wayland_MainLoop()
 {
 	// Wait for display to be initialized
 	while (!GLWin.wl_display)
diff --git a/Source/DSPTool/DSPTool.cpp b/Source/DSPTool/DSPTool.cpp
index da3b2e1a8f..ba7fd1ea8d 100644
--- a/Source/DSPTool/DSPTool.cpp
+++ b/Source/DSPTool/DSPTool.cpp
@@ -21,7 +21,7 @@ void DSPHost::UpdateDebugger() {}
 
 // This test goes from text ASM to binary to text ASM and once again back to binary.
 // Then the two binaries are compared.
-bool RoundTrip(const std::vector<u16> &code1)
+static bool RoundTrip(const std::vector<u16> &code1)
 {
 	std::vector<u16> code2;
 	std::string text;
@@ -45,7 +45,7 @@ bool RoundTrip(const std::vector<u16> &code1)
 
 // This test goes from text ASM to binary to text ASM and once again back to binary.
 // Very convenient for testing. Then the two binaries are compared.
-bool SuperTrip(const char *asm_code)
+static bool SuperTrip(const char *asm_code)
 {
 	std::vector<u16> code1, code2;
 	std::string text;
@@ -80,7 +80,7 @@ bool SuperTrip(const char *asm_code)
 	return true;
 }
 
-void RunAsmTests()
+static void RunAsmTests()
 {
 	bool fail = false;
 #define CHK(a) if (!SuperTrip(a)) printf("FAIL\n%s\n", a), fail = true;
diff --git a/Source/UnitTests/Common/BitFieldTest.cpp b/Source/UnitTests/Common/BitFieldTest.cpp
index a97fd3bb82..aa98352272 100644
--- a/Source/UnitTests/Common/BitFieldTest.cpp
+++ b/Source/UnitTests/Common/BitFieldTest.cpp
@@ -24,7 +24,7 @@ union TestUnion
 };
 
 // table of raw numbers to test with
-u64 table[] =
+static u64 table[] =
 {
 	0x0000000000000000ull, // all zero
 	0xffffffffffffffffull, // all one