disables 'make install'

Makefile.am

@@ -7,10 +7,6 @@ EXTRA_DIST =
 # included in the 'subdirs' variable.
 SUBDIRS = $(subdirs)
 
-# Scripts and utilities to be installed by 'make install'.
-dist_bin_SCRIPTS = scripts/gmock_doctor.py
-bin_SCRIPTS = scripts/gmock-config
-
 # This is generated by the configure script, so clean it for distribution.
 DISTCLEANFILES = scripts/gmock-config
 
@@ -199,3 +195,15 @@ maintainer-clean-local:
 # Death tests may produce core dumps in the build directory. In case
 # this happens, clean them to keep distcleancheck happy.
 CLEANFILES = core
+
+# Disables 'make install' as installing a compiled version of Google
+# Mock can lead to undefined behavior due to violation of the
+# One-Definition Rule.
+
+install-exec-local:
+	echo "'make install' is dangerous and not supported. Instead, see README for how to integrate Google Mock into your build system."
+	false
+
+install-data-local:
+	echo "'make install' is dangerous and not supported. Instead, see README for how to integrate Google Mock into your build system."
+	false