--- protobuf-2.5.0/autogen.sh.orig	2013-03-03 08:13:52.293540047 +0100
+++ protobuf-2.5.0/autogen.sh	2013-03-03 08:14:36.570204855 +0100
@@ -15,25 +15,8 @@
   exit 1
 fi
 
-# Check that gtest is present.  Usually it is already there since the
-# directory is set up as an SVN external.
-if test ! -e gtest; then
-  echo "Google Test not present.  Fetching gtest-1.5.0 from the web..."
-  curl http://googletest.googlecode.com/files/gtest-1.5.0.tar.bz2 | tar jx
-  mv gtest-1.5.0 gtest
-fi
-
 set -ex
 
-# Temporary hack:  Must change C runtime library to "multi-threaded DLL",
-#   otherwise it will be set to "multi-threaded static" when MSVC upgrades
-#   the project file to MSVC 2005/2008.  vladl of Google Test says gtest will
-#   probably change their default to match, then this will be unnecessary.
-#   One of these mappings converts the debug configuration and the other
-#   converts the release configuration.  I don't know which is which.
-sed -i -e 's/RuntimeLibrary="5"/RuntimeLibrary="3"/g;
-           s/RuntimeLibrary="4"/RuntimeLibrary="2"/g;' gtest/msvc/*.vcproj
-
 # TODO(kenton):  Remove the ",no-obsolete" part and fix the resulting warnings.
 autoreconf -f -i -Wall,no-obsolete
 
diff -up protobuf-2.3.0/Makefile.am.orig protobuf-2.3.0/Makefile.am
--- protobuf-2.3.0/Makefile.am.orig	2010-04-21 18:55:38.009265866 -0600
+++ protobuf-2.3.0/Makefile.am	2010-04-21 18:56:15.068016238 -0600
@@ -11,27 +11,6 @@ SUBDIRS = . src
 # Always include gtest in distributions.
 DIST_SUBDIRS = $(subdirs) src
 
-# Build gtest before we build protobuf tests.  We don't add gtest to SUBDIRS
-# because then "make check" would also build and run all of gtest's own tests,
-# which takes a lot of time and is generally not useful to us.  Also, we don't
-# want "make install" to recurse into gtest since we don't want to overwrite
-# the installed version of gtest if there is one.
-check-local:
-	@echo "Making lib/libgtest.a lib/libgtest_main.a in gtest"
-	@cd gtest && $(MAKE) $(AM_MAKEFLAGS) lib/libgtest.la lib/libgtest_main.la
-
-# We would like to clean gtest when "make clean" is invoked.  But we have to
-# be careful because clean-local is also invoked during "make distclean", but
-# "make distclean" already recurses into gtest because it's listed among the
-# DIST_SUBDIRS.  distclean will delete gtest/Makefile, so if we then try to
-# cd to the directory again and "make clean" it will fail.  So, check that the
-# Makefile exists before recursing.
-clean-local:
-	@if test -e gtest/Makefile; then \
-	  echo "Making clean in gtest"; \
-	  cd gtest && $(MAKE) $(AM_MAKEFLAGS) clean; \
-	fi
-
 pkgconfigdir = $(libdir)/pkgconfig
 pkgconfig_DATA = protobuf.pc protobuf-lite.pc
 
--- protobuf-2.6.1/src/Makefile.am.orig	2014-10-11 07:50:39.000000000 +0200
+++ protobuf-2.6.1/src/Makefile.am	2014-10-13 21:17:00.879286908 +0200
@@ -325,10 +325,8 @@
 check_PROGRAMS = protoc protobuf-test protobuf-lazy-descriptor-test \
                  protobuf-lite-test test_plugin $(GZCHECKPROGRAMS)
 protobuf_test_LDADD = $(PTHREAD_LIBS) libprotobuf.la libprotoc.la \
-                      $(top_builddir)/gtest/lib/libgtest.la       \
-                      $(top_builddir)/gtest/lib/libgtest_main.la
-protobuf_test_CPPFLAGS = -I$(top_srcdir)/gtest/include         \
-                         -I$(top_builddir)/gtest/include
+                      -lgtest -lgtest_main
+protobuf_test_CPPFLAGS =
 # Disable optimization for tests unless the user explicitly asked for it,
 # since test_util.cc takes forever to compile with optimization (with GCC).
 # See configure.ac for more info.
@@ -375,10 +373,8 @@
 # Run cpp_unittest again with PROTOBUF_TEST_NO_DESCRIPTORS defined.
 protobuf_lazy_descriptor_test_LDADD = $(PTHREAD_LIBS) libprotobuf.la \
                       libprotoc.la                                   \
-                      $(top_builddir)/gtest/lib/libgtest.la          \
-                      $(top_builddir)/gtest/lib/libgtest_main.la
-protobuf_lazy_descriptor_test_CPPFLAGS = -I$(top_srcdir)/gtest/include    \
-                                         -I$(top_builddir)/gtest/include  \
+		      -lgtest -lgtest_main
+protobuf_lazy_descriptor_test_CPPFLAGS = \
                                          -DPROTOBUF_TEST_NO_DESCRIPTORS
 protobuf_lazy_descriptor_test_CXXFLAGS = $(NO_OPT_CXXFLAGS)
 protobuf_lazy_descriptor_test_SOURCES =                        \
@@ -397,7 +393,7 @@
 
 # Test plugin binary.
 test_plugin_LDADD = $(PTHREAD_LIBS) libprotobuf.la libprotoc.la \
-                    $(top_builddir)/gtest/lib/libgtest.la
+                    -lgtest
 test_plugin_CPPFLAGS = -I$(top_srcdir)/gtest/include         \
                        -I$(top_builddir)/gtest/include
 test_plugin_SOURCES =                                          \