From ab6fd35a860fadb630a8c68ceacc572de16fee4f Mon Sep 17 00:00:00 2001
From: Dennis Klein <d.klein@gsi.de>
Date: Wed, 8 Aug 2018 16:28:46 +0200
Subject: [PATCH] Add header-only target for msgpack

---
 cmake/Findmsgpack.cmake | 46 +++++++++++++++++++++++++++++++++++++++++
 fairmq/CMakeLists.txt   |  2 +-
 2 files changed, 47 insertions(+), 1 deletion(-)
 create mode 100644 cmake/Findmsgpack.cmake

diff --git a/cmake/Findmsgpack.cmake b/cmake/Findmsgpack.cmake
new file mode 100644
index 00000000..3d28453b
--- /dev/null
+++ b/cmake/Findmsgpack.cmake
@@ -0,0 +1,46 @@
+################################################################################
+#    Copyright (C) 2018 GSI Helmholtzzentrum fuer Schwerionenforschung GmbH    #
+#                                                                              #
+#              This software is distributed under the terms of the             #
+#              GNU Lesser General Public Licence (LGPL) version 3,             #
+#                  copied verbatim in the file "LICENSE"                       #
+################################################################################
+
+unset(_args)
+
+if(msgpack_FIND_VERSION)
+  list(APPEND _args ${msgpack_FIND_VERSION})
+endif()
+
+if(msgpack_FIND_EXACT)
+  list(APPEND _args "EXACT")
+endif()
+
+if(msgpack_FIND_QUIETLY)
+  list(APPEND _args "QUIET")
+endif()
+
+if(msgpack_FIND_REQUIRED)
+  list(APPEND _args "REQUIRED")
+endif()
+
+if(msgpack_FIND_COMPONENTS)
+  list(APPEND _args "COMPONENTS" ${msgpack_FIND_COMPONENTS})
+endif()
+
+find_package(msgpack ${_args} CONFIG)
+
+if(msgpack_FOUND AND NOT TARGET msgpack::msgpack)
+  # config mode find_package does not set $msgpack_ROOT, workaround by extracting
+  # root path from library target
+  unset(_msgpack_lib)
+  unset(_prefix)
+  get_target_property(_msgpack_lib msgpackc INTERFACE_LOCATION)
+  get_filename_component(_prefix ${_msgpack_lib} DIRECTORY)
+  get_filename_component(_prefix ${_prefix}/.. ABSOLUTE)
+
+  add_library(msgpack::msgpack INTERFACE IMPORTED)
+  set_target_properties(msgpack::msgpack PROPERTIES
+    INTERFACE_INCLUDE_DIRECTORIES "${_prefix}/include"
+  )
+endif()
diff --git a/fairmq/CMakeLists.txt b/fairmq/CMakeLists.txt
index eee7f8af..c2269130 100644
--- a/fairmq/CMakeLists.txt
+++ b/fairmq/CMakeLists.txt
@@ -214,7 +214,7 @@ target_include_directories(FairMQ
 # link libraries #
 ##################
 if(BUILD_NANOMSG_TRANSPORT)
-  set(NANOMSG_DEPS nanomsg msgpackc)
+  set(NANOMSG_DEPS nanomsg msgpack::msgpack)
 endif()
 if(BUILD_OFI_TRANSPORT)
   set(OFI_DEPS OFI::libfabric protobuf::libprotobuf $<TARGET_OBJECTS:OfiTransport>)