diff --git a/Modules/CMakeCCompilerId.c.in b/Modules/CMakeCCompilerId.c.in
index 6bae3a20b6..cfa65c2851 100644
--- a/Modules/CMakeCCompilerId.c.in
+++ b/Modules/CMakeCCompilerId.c.in
@@ -17,6 +17,9 @@
 
 #elif defined(__clang__)
 # define COMPILER_ID "Clang"
+# define COMPILER_VERSION_MAJOR DEC(__clang_major__)
+# define COMPILER_VERSION_MINOR DEC(__clang_minor__)
+# define COMPILER_VERSION_PATCH DEC(__clang_patchlevel__)
 
 #elif defined(__BORLANDC__)
 # define COMPILER_ID "Borland"
diff --git a/Modules/CMakeCXXCompilerId.cpp.in b/Modules/CMakeCXXCompilerId.cpp.in
index f2d6f6b4cb..19fa7300c5 100644
--- a/Modules/CMakeCXXCompilerId.cpp.in
+++ b/Modules/CMakeCXXCompilerId.cpp.in
@@ -19,6 +19,9 @@
 
 #elif defined(__clang__)
 # define COMPILER_ID "Clang"
+# define COMPILER_VERSION_MAJOR DEC(__clang_major__)
+# define COMPILER_VERSION_MINOR DEC(__clang_minor__)
+# define COMPILER_VERSION_PATCH DEC(__clang_patchlevel__)
 
 #elif defined(__BORLANDC__)
 # define COMPILER_ID "Borland"