diff --git a/Modules/CMakeDetermineCCompiler.cmake b/Modules/CMakeDetermineCCompiler.cmake
index d564b1b36..736fc8932 100644
--- a/Modules/CMakeDetermineCCompiler.cmake
+++ b/Modules/CMakeDetermineCCompiler.cmake
@@ -148,16 +148,16 @@ endif ()
 if (CMAKE_CROSSCOMPILING  AND NOT _CMAKE_TOOLCHAIN_PREFIX)
 
   if("${CMAKE_C_COMPILER_ID}" MATCHES "GNU")
-  get_filename_component(COMPILER_BASENAME "${CMAKE_C_COMPILER}" NAME)
-  if (COMPILER_BASENAME MATCHES "^(.+-)g?cc(-[0-9]+\\.[0-9]+\\.[0-9]+)?(\\.exe)?$")
-    set(_CMAKE_TOOLCHAIN_PREFIX ${CMAKE_MATCH_1})
-  endif ()
+    get_filename_component(COMPILER_BASENAME "${CMAKE_C_COMPILER}" NAME)
+    if (COMPILER_BASENAME MATCHES "^(.+-)g?cc(-[0-9]+\\.[0-9]+\\.[0-9]+)?(\\.exe)?$")
+      set(_CMAKE_TOOLCHAIN_PREFIX ${CMAKE_MATCH_1})
+    endif ()
 
-  # if "llvm-" is part of the prefix, remove it, since llvm doesn't have its own binutils
-  # but uses the regular ar, objcopy, etc. (instead of llvm-objcopy etc.)
-  if ("${_CMAKE_TOOLCHAIN_PREFIX}" MATCHES "(.+-)?llvm-$")
-    set(_CMAKE_TOOLCHAIN_PREFIX ${CMAKE_MATCH_1})
-  endif ()
+    # if "llvm-" is part of the prefix, remove it, since llvm doesn't have its own binutils
+    # but uses the regular ar, objcopy, etc. (instead of llvm-objcopy etc.)
+    if ("${_CMAKE_TOOLCHAIN_PREFIX}" MATCHES "(.+-)?llvm-$")
+      set(_CMAKE_TOOLCHAIN_PREFIX ${CMAKE_MATCH_1})
+    endif ()
   endif()
 
 endif ()
diff --git a/Modules/CMakeDetermineCXXCompiler.cmake b/Modules/CMakeDetermineCXXCompiler.cmake
index 3523f8d9e..c128cfa46 100644
--- a/Modules/CMakeDetermineCXXCompiler.cmake
+++ b/Modules/CMakeDetermineCXXCompiler.cmake
@@ -146,16 +146,16 @@ endif ()
 if (CMAKE_CROSSCOMPILING  AND NOT  _CMAKE_TOOLCHAIN_PREFIX)
 
   if("${CMAKE_CXX_COMPILER_ID}" MATCHES "GNU")
-  get_filename_component(COMPILER_BASENAME "${CMAKE_CXX_COMPILER}" NAME)
-  if (COMPILER_BASENAME MATCHES "^(.+-)[gc]\\+\\+(-[0-9]+\\.[0-9]+\\.[0-9]+)?(\\.exe)?$")
-    set(_CMAKE_TOOLCHAIN_PREFIX ${CMAKE_MATCH_1})
-  endif ()
+    get_filename_component(COMPILER_BASENAME "${CMAKE_CXX_COMPILER}" NAME)
+    if (COMPILER_BASENAME MATCHES "^(.+-)[gc]\\+\\+(-[0-9]+\\.[0-9]+\\.[0-9]+)?(\\.exe)?$")
+      set(_CMAKE_TOOLCHAIN_PREFIX ${CMAKE_MATCH_1})
+    endif ()
 
-  # if "llvm-" is part of the prefix, remove it, since llvm doesn't have its own binutils
-  # but uses the regular ar, objcopy, etc. (instead of llvm-objcopy etc.)
-  if ("${_CMAKE_TOOLCHAIN_PREFIX}" MATCHES "(.+-)?llvm-$")
-    set(_CMAKE_TOOLCHAIN_PREFIX ${CMAKE_MATCH_1})
-  endif ()
+    # if "llvm-" is part of the prefix, remove it, since llvm doesn't have its own binutils
+    # but uses the regular ar, objcopy, etc. (instead of llvm-objcopy etc.)
+    if ("${_CMAKE_TOOLCHAIN_PREFIX}" MATCHES "(.+-)?llvm-$")
+      set(_CMAKE_TOOLCHAIN_PREFIX ${CMAKE_MATCH_1})
+    endif ()
   endif()
 
 endif ()
diff --git a/Modules/CMakeDetermineFortranCompiler.cmake b/Modules/CMakeDetermineFortranCompiler.cmake
index b37ebfe37..4d3fb9076 100644
--- a/Modules/CMakeDetermineFortranCompiler.cmake
+++ b/Modules/CMakeDetermineFortranCompiler.cmake
@@ -203,16 +203,16 @@ endif ()
 if (CMAKE_CROSSCOMPILING  AND NOT _CMAKE_TOOLCHAIN_PREFIX)
 
   if("${CMAKE_Fortran_COMPILER_ID}" MATCHES "GNU")
-  get_filename_component(COMPILER_BASENAME "${CMAKE_Fortran_COMPILER}" NAME)
-  if (COMPILER_BASENAME MATCHES "^(.+-)g?fortran(-[0-9]+\\.[0-9]+\\.[0-9]+)?(\\.exe)?$")
-    set(_CMAKE_TOOLCHAIN_PREFIX ${CMAKE_MATCH_1})
-  endif ()
+    get_filename_component(COMPILER_BASENAME "${CMAKE_Fortran_COMPILER}" NAME)
+    if (COMPILER_BASENAME MATCHES "^(.+-)g?fortran(-[0-9]+\\.[0-9]+\\.[0-9]+)?(\\.exe)?$")
+      set(_CMAKE_TOOLCHAIN_PREFIX ${CMAKE_MATCH_1})
+    endif ()
 
-  # if "llvm-" is part of the prefix, remove it, since llvm doesn't have its own binutils
-  # but uses the regular ar, objcopy, etc. (instead of llvm-objcopy etc.)
-  if ("${_CMAKE_TOOLCHAIN_PREFIX}" MATCHES "(.+-)?llvm-$")
-    set(_CMAKE_TOOLCHAIN_PREFIX ${CMAKE_MATCH_1})
-  endif ()
+    # if "llvm-" is part of the prefix, remove it, since llvm doesn't have its own binutils
+    # but uses the regular ar, objcopy, etc. (instead of llvm-objcopy etc.)
+    if ("${_CMAKE_TOOLCHAIN_PREFIX}" MATCHES "(.+-)?llvm-$")
+      set(_CMAKE_TOOLCHAIN_PREFIX ${CMAKE_MATCH_1})
+    endif ()
   endif()
 
 endif ()