--- protobuf/src/Makefile.am.old	2017-04-20 17:58:28.941775687 +0200
+++ protobuf/src/Makefile.am	2017-04-20 17:57:40.629763450 +0200
@@ -481,7 +481,10 @@
   google/protobuf/compiler/csharp/csharp_wrapper_field.cc      \
   google/protobuf/compiler/csharp/csharp_wrapper_field.h
 
+EXTRA_PROGRAMS = protoc
+if !USE_EXTERNAL_PROTOC
 bin_PROGRAMS = protoc
+endif
 protoc_LDADD = $(PTHREAD_LIBS) libprotobuf.la libprotoc.la
 protoc_SOURCES = google/protobuf/compiler/main.cc
 
--- protobuf/src/Makefile.am.old	2018-03-14 15:00:19.974044729 +0100
+++ protobuf/src/Makefile.am	2018-03-14 15:01:03.158043968 +0100
@@ -174,7 +174,7 @@
   google/protobuf/util/type_resolver_util.h                     \
   google/protobuf/util/message_differencer.h
 
-lib_LTLIBRARIES = libprotobuf-lite.la libprotobuf.la libprotoc.la
+lib_LTLIBRARIES = libprotobuf-lite.la libprotobuf.la
 
 libprotobuf_lite_la_LIBADD = $(PTHREAD_LIBS)
 libprotobuf_lite_la_LDFLAGS = -version-info 11:0:0 -export-dynamic -no-undefined