diff --git a/BaseTools/Source/C/GenFfs/GenFfs.c b/BaseTools/Source/C/GenFfs/GenFfs.c
index d78d62ab36..4c2e93e6f4 100644
--- a/BaseTools/Source/C/GenFfs/GenFfs.c
+++ b/BaseTools/Source/C/GenFfs/GenFfs.c
@@ -7,7 +7,9 @@ SPDX-License-Identifier: BSD-2-Clause-Patent
 **/
 
 #ifndef __GNUC__
+#define RUNTIME_FUNCTION  _WINNT_DUP_RUNTIME_FUNCTION
 #include <windows.h>
+#undef RUNTIME_FUNCTION
 #include <io.h>
 #include <sys/types.h>
 #include <sys/stat.h>
diff --git a/BaseTools/Source/C/GenFw/Elf32Convert.c b/BaseTools/Source/C/GenFw/Elf32Convert.c
index de198e58db..246497a718 100644
--- a/BaseTools/Source/C/GenFw/Elf32Convert.c
+++ b/BaseTools/Source/C/GenFw/Elf32Convert.c
@@ -10,7 +10,9 @@ SPDX-License-Identifier: BSD-2-Clause-Patent
 **/
 
 #ifndef __GNUC__
+#define RUNTIME_FUNCTION  _WINNT_DUP_RUNTIME_FUNCTION
 #include <windows.h>
+#undef RUNTIME_FUNCTION
 #include <io.h>
 #endif
 #include <assert.h>
diff --git a/BaseTools/Source/C/GenFw/Elf64Convert.c b/BaseTools/Source/C/GenFw/Elf64Convert.c
index 897045b2be..6919e18809 100644
--- a/BaseTools/Source/C/GenFw/Elf64Convert.c
+++ b/BaseTools/Source/C/GenFw/Elf64Convert.c
@@ -11,7 +11,9 @@ SPDX-License-Identifier: BSD-2-Clause-Patent
 **/
 
 #ifndef __GNUC__
+#define RUNTIME_FUNCTION  _WINNT_DUP_RUNTIME_FUNCTION
 #include <windows.h>
+#undef RUNTIME_FUNCTION
 #include <io.h>
 #endif
 #include <assert.h>
diff --git a/BaseTools/Source/C/GenFw/ElfConvert.c b/BaseTools/Source/C/GenFw/ElfConvert.c
index 3205f61494..d6d9feb7d8 100644
--- a/BaseTools/Source/C/GenFw/ElfConvert.c
+++ b/BaseTools/Source/C/GenFw/ElfConvert.c
@@ -8,7 +8,9 @@ SPDX-License-Identifier: BSD-2-Clause-Patent
 **/
 
 #ifndef __GNUC__
+#define RUNTIME_FUNCTION  _WINNT_DUP_RUNTIME_FUNCTION
 #include <windows.h>
+#undef RUNTIME_FUNCTION
 #include <io.h>
 #endif
 #include <stdio.h>
diff --git a/BaseTools/Source/C/GenFw/GenFw.c b/BaseTools/Source/C/GenFw/GenFw.c
index bd635b375a..daf840c3cd 100644
--- a/BaseTools/Source/C/GenFw/GenFw.c
+++ b/BaseTools/Source/C/GenFw/GenFw.c
@@ -7,7 +7,9 @@ SPDX-License-Identifier: BSD-2-Clause-Patent
 **/
 
 #ifndef __GNUC__
+#define RUNTIME_FUNCTION  _WINNT_DUP_RUNTIME_FUNCTION
 #include <windows.h>
+#undef RUNTIME_FUNCTION
 #include <io.h>
 #include <sys/types.h>
 #include <sys/stat.h>
diff --git a/BaseTools/Source/C/GenSec/GenSec.c b/BaseTools/Source/C/GenSec/GenSec.c
index cf24d821aa..d9d2efeca7 100644
--- a/BaseTools/Source/C/GenSec/GenSec.c
+++ b/BaseTools/Source/C/GenSec/GenSec.c
@@ -6,7 +6,9 @@ SPDX-License-Identifier: BSD-2-Clause-Patent
 
 **/
 #ifndef __GNUC__
+#define RUNTIME_FUNCTION  _WINNT_DUP_RUNTIME_FUNCTION
 #include <windows.h>
+#undef RUNTIME_FUNCTION
 #include <io.h>
 #include <sys/types.h>
 #include <sys/stat.h>
diff --git a/BaseTools/Source/C/Makefiles/ms.common b/BaseTools/Source/C/Makefiles/ms.common
index fe7a59c280..66f0f5ba4c 100644
--- a/BaseTools/Source/C/Makefiles/ms.common
+++ b/BaseTools/Source/C/Makefiles/ms.common
@@ -51,6 +51,23 @@ BIN_PATH     = $(BASE_TOOLS_PATH)\Bin\Win64
 LIB_PATH     = $(BASE_TOOLS_PATH)\Lib\Win64
 SYS_BIN_PATH = $(EDK_TOOLS_PATH)\Bin\Win64
 SYS_LIB_PATH = $(EDK_TOOLS_PATH)\Lib\Win64
+CFLAGS = $(CFLAGS) /wd4267 /wd4244 /wd4334
+
+!ELSEIF "$(HOST_ARCH)"=="ARM"
+ARCH_INCLUDE = $(EDK2_PATH)\MdePkg\Include\Arm
+BIN_PATH     = $(BASE_TOOLS_PATH)\Bin\Win32
+LIB_PATH     = $(BASE_TOOLS_PATH)\Lib\Win32
+SYS_BIN_PATH = $(EDK_TOOLS_PATH)\Bin\Win32
+SYS_LIB_PATH = $(EDK_TOOLS_PATH)\Lib\Win32
+
+!ELSEIF "$(HOST_ARCH)"=="AARCH64"
+ARCH_INCLUDE = $(EDK2_PATH)\MdePkg\Include\AArch64
+BIN_PATH     = $(BASE_TOOLS_PATH)\Bin\Win64
+LIB_PATH     = $(BASE_TOOLS_PATH)\Lib\Win64
+SYS_BIN_PATH = $(EDK_TOOLS_PATH)\Bin\Win64
+SYS_LIB_PATH = $(EDK_TOOLS_PATH)\Lib\Win64
+# Note: These are bit-width conversion related warning suppressions.
+CFLAGS = $(CFLAGS) /wd4267 /wd4244 /wd4334
 
 !ELSE
 !ERROR "Bad HOST_ARCH"