diff --git a/Tools/Conf/tools_def.template b/Tools/Conf/tools_def.template
index 24d7f2102b..d85438e155 100644
--- a/Tools/Conf/tools_def.template
+++ b/Tools/Conf/tools_def.template
@@ -42,3 +42,16 @@
 *_MSFT_EBC_*_SPATH = C:\Program Files\Intel\EBC\Lib\EbcLib.lib
 *_MSFT_EBC_CC_NAME = iec.exe
 *_MSFT_EBC_SLINK_NAME = link.exe
+
+# GCC definitions
+*_GCC_*_*_FAMILY = GCC
+*_GCC_*_CC_NAME = gcc
+*_GCC_*_SLINK_NAME = ar
+*_GCC_*_DLINK_NAME = ld
+*_GCC_*_ASM_NAME = ml.exe
+*_GCC_*_PP_NAME=gcc
+
+# GCC, IA32
+*_GCC_IA32_*_PATH = C:\cygwin\opt\tiano\i386-tiano-pe\i386-tiano-pe\bin
+*_GCC_IA32_ASM_PATH = C:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\bin
+*_GCC_IA32_ASM_DPATH = C:\Program Files\Microsoft Visual Studio .NET 2003\Common7\IDE