diff --git a/docs/tools/Makefile b/docs/tools/Makefile
index 4cffc45..5521d6b 100644
--- a/docs/tools/Makefile
+++ b/docs/tools/Makefile
@@ -40,7 +40,8 @@
 CLANG_LEVEL := ../..
 include $(CLANG_LEVEL)/Makefile
 
-CLANG_VERSION := $(shell cat $(PROJ_SRC_DIR)/../../VER)
+CLANG_VERSION := $(word 3,$(shell grep "CLANG_VERSION " \
+	$(PROJ_OBJ_DIR)/$(CLANG_LEVEL)/include/clang/Basic/Version.inc))
 
 SRC_DOC_DIR=$(PROJ_SRC_DIR)/
 DST_HTML_DIR=$(PROJ_OBJ_DIR)/
diff --git a/lib/Headers/Makefile b/lib/Headers/Makefile
index 79c5b3a..45c7709 100644
--- a/lib/Headers/Makefile
+++ b/lib/Headers/Makefile
@@ -14,7 +14,8 @@
 
 include $(CLANG_LEVEL)/Makefile
 
-CLANG_VERSION := $(shell cat $(PROJ_SRC_DIR)/../../VER)
+CLANG_VERSION := $(word 3,$(shell grep "CLANG_VERSION " \
+	$(PROJ_OBJ_DIR)/$(CLANG_LEVEL)/include/clang/Basic/Version.inc))
 
 HeaderDir := $(PROJ_OBJ_ROOT)/$(BuildMode)/lib/clang/$(CLANG_VERSION)/include
 
diff --git a/lib/Runtime/Makefile b/lib/Runtime/Makefile
index 1b25818..347df9b 100644
--- a/lib/Runtime/Makefile
+++ b/lib/Runtime/Makefile
@@ -16,7 +16,9 @@
 CLANG_LEVEL := ../..
 include $(CLANG_LEVEL)/Makefile
 
-CLANG_VERSION := $(shell cat $(PROJ_SRC_DIR)/../../VER)
+CLANG_VERSION := $(word 3,$(shell grep "CLANG_VERSION " \
+	$(PROJ_OBJ_DIR)/$(CLANG_LEVEL)/include/clang/Basic/Version.inc))
+
 ResourceDir := $(PROJ_OBJ_ROOT)/$(BuildMode)/lib/clang/$(CLANG_VERSION)
 PROJ_resources := $(DESTDIR)$(PROJ_prefix)/lib/clang/$(CLANG_VERSION)