diff --git a/EdkModulePkg/EdkModulePkg-All-Archs.fpd b/EdkModulePkg/EdkModulePkg-All-Archs.fpd
index 84cbe8926e..275b41219b 100644
--- a/EdkModulePkg/EdkModulePkg-All-Archs.fpd
+++ b/EdkModulePkg/EdkModulePkg-All-Archs.fpd
@@ -15733,29 +15733,6 @@
       </Option>
       <Option ToolChainFamily="INTEL" SupArchList="EBC" ToolCode="PP"> "-nologo", "-P", "-TC" </Option>
         
-      <!-- GCC tool chain options definition : IA32 -->
-      <Option ToolChainFamily="GCC" SupArchList="IA32" ToolCode="CC">
-        "-Os", "-fshort-wchar", "-fno-strict-aliasing", "-Wall", "-Werror", "-c", "-include ${DEST_DIR_DEBUG}/AutoGen.h"
-      </Option>
-      <Option ToolChainFamily="GCC" SupArchList="IA32" ToolCode="ASM"> "--warn" </Option>
-      <Option ToolChainFamily="GCC" SupArchList="IA32" ToolCode="SLINK"> </Option>
-      <Option ToolChainFamily="GCC" SupArchList="IA32" ToolCode="DLINK">
-        "-nostdlib", "-O2", "--gc-sections", "--dll", "--export-all-symbols", "--entry ${ENTRYPOINT}"
-      </Option>
-      <Option ToolChainFamily="GCC" SupArchList="IA32" ToolCode="ASMLINK"/>
-      <Option ToolChainFamily="GCC" SupArchList="IA32" ToolCode="PP"> "-E", "-x assembler-with-cpp", "-include ${DEST_DIR_DEBUG}/AutoGen.h" </Option>
-
-      <!-- BOB tool chain options definition : IA32 -->
-      <Option TagName="BOB" SupArchList="IA32" ToolCode="CC">
-        "-Os", "-fshort-wchar", "-fno-strict-aliasing", "-Wall", "-Werror", "-c"
-      </Option>
-      <Option TagName="BOB" SupArchList="IA32" ToolCode="ASM"> "--warn" </Option>
-      <Option TagName="BOB" SupArchList="IA32" ToolCode="SLINK"> </Option>
-      <Option TagName="BOB" SupArchList="IA32" ToolCode="DLINK">
-        "-nostdlib", "-O2", "--gc-sections", "--dll", "--export-all-symbols"
-      </Option>
-      <Option TagName="BOB" SupArchList="IA32" ToolCode="ASMLINK"/>
-      <Option TagName="BOB" SupArchList="IA32" ToolCode="PP"> "-E" </Option>
     </Options>    
 
 	  <Ffs FfsKey="APPLICATION">
diff --git a/EdkModulePkg/EdkModulePkg.fpd b/EdkModulePkg/EdkModulePkg.fpd
index bf875e95eb..f941ad44b9 100644
--- a/EdkModulePkg/EdkModulePkg.fpd
+++ b/EdkModulePkg/EdkModulePkg.fpd
@@ -1839,7 +1839,7 @@
         <FfsFormatKey>BS_DRIVER</FfsFormatKey>
       </ModuleSaBuildOptions>
     </ModuleSA>
-    <ModuleSA SupArchList="IA32" PackageGuid="B6EC423C-21D2-490D-85C6-DD5864EAA674" ModuleGuid="911D584C-35F7-4955-BEF9-B452769DDC3A">
+    <!--ModuleSA SupArchList="IA32" PackageGuid="B6EC423C-21D2-490D-85C6-DD5864EAA674" ModuleGuid="911D584C-35F7-4955-BEF9-B452769DDC3A">
       <Libraries>
         <Instance ModuleGuid="ff5c7a2c-ab7a-4366-8616-11c6e53247b6" PackageGuid="5e0e9358-46b6-4ae2-8218-4ab8b9bbdcec"/>
         <Instance ModuleGuid="27d67720-ea68-48ae-93da-a3a074c90e30" PackageGuid="5e0e9358-46b6-4ae2-8218-4ab8b9bbdcec"/>
@@ -1919,7 +1919,7 @@
         <FvBinding>NULL</FvBinding>
         <FfsFormatKey>BS_DRIVER</FfsFormatKey>
       </ModuleSaBuildOptions>
-    </ModuleSA>
+    </ModuleSA-->
     <ModuleSA SupArchList="IA32" PackageGuid="B6EC423C-21D2-490D-85C6-DD5864EAA674" ModuleGuid="9E863906-A40F-4875-977F-5B93FF237FC6">
       <Libraries>
         <Instance ModuleGuid="ff5c7a2c-ab7a-4366-8616-11c6e53247b6" PackageGuid="5e0e9358-46b6-4ae2-8218-4ab8b9bbdcec"/>
@@ -2668,7 +2668,7 @@
         <FfsFormatKey>BS_DRIVER</FfsFormatKey>
       </ModuleSaBuildOptions>
     </ModuleSA>
-    <ModuleSA SupArchList="IA32" PackageGuid="B6EC423C-21D2-490D-85C6-DD5864EAA674" ModuleGuid="13AC6DD0-73D0-11D4-B06B-00AA00BD6DE7">
+    <!--ModuleSA SupArchList="IA32" PackageGuid="B6EC423C-21D2-490D-85C6-DD5864EAA674" ModuleGuid="13AC6DD0-73D0-11D4-B06B-00AA00BD6DE7">
       <Libraries>
         <Instance ModuleGuid="ff5c7a2c-ab7a-4366-8616-11c6e53247b6" PackageGuid="5e0e9358-46b6-4ae2-8218-4ab8b9bbdcec"/>
         <Instance ModuleGuid="27d67720-ea68-48ae-93da-a3a074c90e30" PackageGuid="5e0e9358-46b6-4ae2-8218-4ab8b9bbdcec"/>
@@ -2750,7 +2750,7 @@
         <FvBinding>NULL</FvBinding>
         <FfsFormatKey>BS_DRIVER</FfsFormatKey>
       </ModuleSaBuildOptions>
-    </ModuleSA>
+    </ModuleSA-->
     <ModuleSA SupArchList="IA32" PackageGuid="B6EC423C-21D2-490D-85C6-DD5864EAA674" ModuleGuid="EBf342FE-B1D3-4EF8-957C-8048606FF670">
       <Libraries>
         <Instance ModuleGuid="ff5c7a2c-ab7a-4366-8616-11c6e53247b6" PackageGuid="5e0e9358-46b6-4ae2-8218-4ab8b9bbdcec"/>
@@ -4149,7 +4149,7 @@
       <Option ToolChainFamily="GCC" SupArchList="IA32" ToolCode="ASM"> "--warn" </Option>
       <Option ToolChainFamily="GCC" SupArchList="IA32" ToolCode="SLINK"> </Option>
       <Option ToolChainFamily="GCC" SupArchList="IA32" ToolCode="DLINK">
-        "-nostdlib", "-O2", "--gc-sections", "--dll", "--export-all-symbols", "--entry ${ENTRYPOINT}"
+        "-nostdlib", "-O2", "--gc-sections", "--dll", "--export-all-symbols", "--entry _${ENTRYPOINT}"
       </Option>
       <Option ToolChainFamily="GCC" SupArchList="IA32" ToolCode="ASMLINK"/>
       <Option ToolChainFamily="GCC" SupArchList="IA32" ToolCode="PP"> "-E", "-x assembler-with-cpp", "-include ${DEST_DIR_DEBUG}/AutoGen.h" </Option>
diff --git a/MdePkg/MdePkg-All-Archs.fpd b/MdePkg/MdePkg-All-Archs.fpd
index bf2ddb09e6..0ff0002473 100644
--- a/MdePkg/MdePkg-All-Archs.fpd
+++ b/MdePkg/MdePkg-All-Archs.fpd
@@ -2605,30 +2605,6 @@
         "/NOLOGO", "/MACHINE:EBC", "/SUBSYSTEM:EFI_BOOT_SERVICE_DRIVER", "/OPT:REF", "/NODEFAULTLIB", "/ENTRY:${ENTRYPOINT}", "/SUBSYSTEM:${SUBSYSTEM}"
       </Option>
       <Option ToolChainFamily="INTEL" SupArchList="EBC" ToolCode="PP"> "-nologo", "-P", "-TC" </Option>
-        
-      <!-- GCC tool chain options definition : IA32 -->
-      <Option ToolChainFamily="GCC" SupArchList="IA32" ToolCode="CC">
-        "-Os", "-fshort-wchar", "-fno-strict-aliasing", "-Wall", "-Werror", "-c", "-include ${DEST_DIR_DEBUG}/AutoGen.h"
-      </Option>
-      <Option ToolChainFamily="GCC" SupArchList="IA32" ToolCode="ASM"> "--warn" </Option>
-      <Option ToolChainFamily="GCC" SupArchList="IA32" ToolCode="SLINK"> </Option>
-      <Option ToolChainFamily="GCC" SupArchList="IA32" ToolCode="DLINK">
-        "-nostdlib", "-O2", "--gc-sections", "--dll", "--export-all-symbols", "--entry ${ENTRYPOINT}"
-      </Option>
-      <Option ToolChainFamily="GCC" SupArchList="IA32" ToolCode="ASMLINK"/>
-      <Option ToolChainFamily="GCC" SupArchList="IA32" ToolCode="PP"> "-E", "-x assembler-with-cpp", "-include ${DEST_DIR_DEBUG}/AutoGen.h" </Option>
-
-      <!-- BOB tool chain options definition : IA32 -->
-      <Option TagName="BOB" SupArchList="IA32" ToolCode="CC">
-        "-Os", "-fshort-wchar", "-fno-strict-aliasing", "-Wall", "-Werror", "-c"
-      </Option>
-      <Option TagName="BOB" SupArchList="IA32" ToolCode="ASM"> "--warn" </Option>
-      <Option TagName="BOB" SupArchList="IA32" ToolCode="SLINK"> </Option>
-      <Option TagName="BOB" SupArchList="IA32" ToolCode="DLINK">
-        "-nostdlib", "-O2", "--gc-sections", "--dll", "--export-all-symbols"
-      </Option>
-      <Option TagName="BOB" SupArchList="IA32" ToolCode="ASMLINK"/>
-      <Option TagName="BOB" SupArchList="IA32" ToolCode="PP"> "-E" </Option>
     </Options>    
 
 	  <Ffs FfsKey="APPLICATION">
diff --git a/MdePkg/MdePkg.fpd b/MdePkg/MdePkg.fpd
index 5147b6cfaa..d03de71960 100644
--- a/MdePkg/MdePkg.fpd
+++ b/MdePkg/MdePkg.fpd
@@ -840,7 +840,7 @@
       <Option ToolChainFamily="GCC" SupArchList="IA32" ToolCode="ASM"> "--warn" </Option>

       <Option ToolChainFamily="GCC" SupArchList="IA32" ToolCode="SLINK"> </Option>

       <Option ToolChainFamily="GCC" SupArchList="IA32" ToolCode="DLINK">

-        "-nostdlib", "-O2", "--gc-sections", "--dll", "--export-all-symbols", "--entry ${ENTRYPOINT}"
+        "-nostdlib", "-O2", "--gc-sections", "--dll", "--export-all-symbols", "--entry _${ENTRYPOINT}"
       </Option>

       <Option ToolChainFamily="GCC" SupArchList="IA32" ToolCode="ASMLINK"/>

       <Option ToolChainFamily="GCC" SupArchList="IA32" ToolCode="PP"> "-E", "-x assembler-with-cpp", "-include ${DEST_DIR_DEBUG}/AutoGen.h" </Option>