diff --git a/Modules/CMakeDetermineASMCompiler.cmake b/Modules/CMakeDetermineASMCompiler.cmake
index 44bd234d8..eac8c55cd 100644
--- a/Modules/CMakeDetermineASMCompiler.cmake
+++ b/Modules/CMakeDetermineASMCompiler.cmake
@@ -43,14 +43,17 @@ IF (NOT _CMAKE_TOOLCHAIN_LOCATION)
   GET_FILENAME_COMPONENT(_CMAKE_TOOLCHAIN_LOCATION "${CMAKE_ASM${ASM_DIALECT}_COMPILER}" PATH)
 ENDIF (NOT _CMAKE_TOOLCHAIN_LOCATION)
 
-# if we have a gcc cross compiler, they have usually some prefix, like 
-# e.g. powerpc-linux-gcc, arm-elf-gcc or i586-mingw32msvc-gcc
-# the other tools of the toolchain usually have the same prefix
+# If we have a gcc cross compiler, they have usually some prefix, like 
+# e.g. powerpc-linux-gcc, arm-elf-gcc or i586-mingw32msvc-gcc .
+# The other tools of the toolchain usually have the same prefix
+# NAME_WE cannot be used since then this test will fail for names lile
+# "arm-unknown-nto-qnx6.3.0-gcc.exe", where BASENAME would be 
+# "arm-unknown-nto-qnx6" instead of the correct "arm-unknown-nto-qnx6.3.0-"
 IF (NOT _CMAKE_TOOLCHAIN_PREFIX)
-  GET_FILENAME_COMPONENT(COMPILER_BASENAME "${CMAKE_ASM${ASM_DIALECT}_COMPILER}" NAME_WE)
-  IF (COMPILER_BASENAME MATCHES "^(.+-)g?as")
-    STRING(REGEX REPLACE "^(.+-)g?as"  "\\1" _CMAKE_TOOLCHAIN_PREFIX "${COMPILER_BASENAME}")
-  ENDIF (COMPILER_BASENAME MATCHES "^(.+-)g?as")
+  GET_FILENAME_COMPONENT(COMPILER_BASENAME "${CMAKE_ASM${ASM_DIALECT}_COMPILER}" NAME)
+  IF (COMPILER_BASENAME MATCHES "^(.+-)g?as(\\.exe)?$")
+    STRING(REGEX REPLACE "^(.+-)g?as(\\.exe)?$"  "\\1" _CMAKE_TOOLCHAIN_PREFIX "${COMPILER_BASENAME}")
+  ENDIF (COMPILER_BASENAME MATCHES "^(.+-)g?as(\\.exe)?$")
 ENDIF (NOT _CMAKE_TOOLCHAIN_PREFIX)
 
 INCLUDE(CMakeFindBinUtils)
diff --git a/Modules/CMakeDetermineCCompiler.cmake b/Modules/CMakeDetermineCCompiler.cmake
index ffe0703f0..ae68f1886 100644
--- a/Modules/CMakeDetermineCCompiler.cmake
+++ b/Modules/CMakeDetermineCCompiler.cmake
@@ -88,14 +88,17 @@ IF (NOT _CMAKE_TOOLCHAIN_LOCATION)
   GET_FILENAME_COMPONENT(_CMAKE_TOOLCHAIN_LOCATION "${CMAKE_C_COMPILER}" PATH)
 ENDIF (NOT _CMAKE_TOOLCHAIN_LOCATION)
 
-# if we have a gcc cross compiler, they have usually some prefix, like 
-# e.g. powerpc-linux-gcc, arm-elf-gcc or i586-mingw32msvc-gcc
-# the other tools of the toolchain usually have the same prefix
+# If we have a gcc cross compiler, they have usually some prefix, like 
+# e.g. powerpc-linux-gcc, arm-elf-gcc or i586-mingw32msvc-gcc .
+# The other tools of the toolchain usually have the same prefix
+# NAME_WE cannot be used since then this test will fail for names lile
+# "arm-unknown-nto-qnx6.3.0-gcc.exe", where BASENAME would be 
+# "arm-unknown-nto-qnx6" instead of the correct "arm-unknown-nto-qnx6.3.0-"
 IF (NOT _CMAKE_TOOLCHAIN_PREFIX)
-  GET_FILENAME_COMPONENT(COMPILER_BASENAME "${CMAKE_C_COMPILER}" NAME_WE)
-  IF (COMPILER_BASENAME MATCHES "^(.+-)g?cc")
-    STRING(REGEX REPLACE "^(.+-)g?cc"  "\\1" _CMAKE_TOOLCHAIN_PREFIX "${COMPILER_BASENAME}")
-  ENDIF (COMPILER_BASENAME MATCHES "^(.+-)g?cc")
+  GET_FILENAME_COMPONENT(COMPILER_BASENAME "${CMAKE_C_COMPILER}" NAME)
+  IF (COMPILER_BASENAME MATCHES "^(.+-)g?cc(\\.exe)?$")
+    STRING(REGEX REPLACE "^(.+-)g?cc(\\.exe)?$"  "\\1" _CMAKE_TOOLCHAIN_PREFIX "${COMPILER_BASENAME}")
+  ENDIF (COMPILER_BASENAME MATCHES "^(.+-)g?cc(\\.exe)?$")
 ENDIF (NOT _CMAKE_TOOLCHAIN_PREFIX)
 
 
diff --git a/Modules/CMakeDetermineCXXCompiler.cmake b/Modules/CMakeDetermineCXXCompiler.cmake
index b02403481..1cd401fc5 100644
--- a/Modules/CMakeDetermineCXXCompiler.cmake
+++ b/Modules/CMakeDetermineCXXCompiler.cmake
@@ -91,11 +91,14 @@ ENDIF (NOT _CMAKE_TOOLCHAIN_LOCATION)
 # if we have a g++ cross compiler, they have usually some prefix, like 
 # e.g. powerpc-linux-g++, arm-elf-g++ or i586-mingw32msvc-g++
 # the other tools of the toolchain usually have the same prefix
+# NAME_WE cannot be used since then this test will fail for names lile
+# "arm-unknown-nto-qnx6.3.0-gcc.exe", where BASENAME would be 
+# "arm-unknown-nto-qnx6" instead of the correct "arm-unknown-nto-qnx6.3.0-"
 IF (NOT _CMAKE_TOOLCHAIN_PREFIX)
-  GET_FILENAME_COMPONENT(COMPILER_BASENAME "${CMAKE_CXX_COMPILER}" NAME_WE)
-  IF (COMPILER_BASENAME MATCHES "^(.+-)[gc]\\+\\+")
-    STRING(REGEX REPLACE "^(.+-)[gc]\\+\\+"  "\\1" _CMAKE_TOOLCHAIN_PREFIX "${COMPILER_BASENAME}")
-  ENDIF (COMPILER_BASENAME MATCHES "^(.+-)[gc]\\+\\+")
+  GET_FILENAME_COMPONENT(COMPILER_BASENAME "${CMAKE_CXX_COMPILER}" NAME)
+  IF (COMPILER_BASENAME MATCHES "^(.+-)[gc]\\+\\+(\\.exe)?$")
+    STRING(REGEX REPLACE "^(.+-)[gc]\\+\\+(\\.exe)?$"  "\\1" _CMAKE_TOOLCHAIN_PREFIX "${COMPILER_BASENAME}")
+  ENDIF (COMPILER_BASENAME MATCHES "^(.+-)[gc]\\+\\+(\\.exe)?$")
 ENDIF (NOT _CMAKE_TOOLCHAIN_PREFIX)
 
 # This block was used before the compiler was identified by building a