Export CXX standard config

cmake/FairMQConfig.cmake.in

@@ -6,8 +6,6 @@
 #                  copied verbatim in the file "LICENSE"                       #
 ################################################################################
 
-cmake_minimum_required(VERSION 3.9.4 FATAL_ERROR)
-
 @PACKAGE_INIT@
 
 ### General variables for project discovery/inspection
@@ -22,6 +20,10 @@ set_and_check(@PROJECT_NAME@_LIBDIR @PACKAGE_CMAKE_INSTALL_PREFIX@/@PROJECT_INST
 set_and_check(@PROJECT_NAME@_DATADIR @PACKAGE_CMAKE_INSTALL_PREFIX@/@PROJECT_INSTALL_DATADIR@)
 set_and_check(@PROJECT_NAME@_CMAKEMODDIR @PACKAGE_CMAKE_INSTALL_PREFIX@/@PROJECT_INSTALL_CMAKEMODDIR@)
 
+set(@PROJECT_NAME@_CXX_STANDARD_REQUIRED @CMAKE_CXX_STANDARD_REQUIRED@)
+set(@PROJECT_NAME@_CXX_STANDARD @CMAKE_CXX_STANDARD@)
+set(@PROJECT_NAME@_CXX_EXTENSIONS @CMAKE_CXX_EXTENSIONS@)
+
 ### Import cmake modules
 set(CMAKE_MODULE_PATH ${@PROJECT_NAME@_CMAKEMODDIR} ${CMAKE_MODULE_PATH})
 

cmake/FairMQLib.cmake

@@ -35,7 +35,9 @@ endif()
 macro(set_fairmq_cmake_policies)
   # Find more details to each policy with cmake --help-policy CMPXXXX
   foreach(policy
+    CMP0025 # Compiler id for Apple Clang is now AppleClang.
     CMP0028 # Double colon in target name means ALIAS or IMPORTED target.
+    CMP0042 # MACOSX_RPATH is enabled by default.
     CMP0048 # The ``project()`` command manages VERSION variables.
     CMP0054 # Only interpret ``if()`` arguments as variables or keywords when unquoted.
   )
@@ -137,6 +139,13 @@ macro(set_fairmq_defaults)
   set(PROJECT_INSTALL_DATADIR ${CMAKE_INSTALL_DATADIR}/${PROJECT_NAME_LOWER})
   set(PROJECT_INSTALL_CMAKEMODDIR ${PROJECT_INSTALL_DATADIR}/cmake)
 
+  # https://cmake.org/Wiki/CMake_RPATH_handling#Always_full_RPATH
+  set(CMAKE_INSTALL_RPATH_USE_LINK_PATH TRUE)
+  list(FIND CMAKE_PLATFORM_IMPLICIT_LINK_DIRECTORIES "${CMAKE_INSTALL_PREFIX}/${PROJECT_INSTALL_LIBDIR}" isSystemDir)
+  if("${isSystemDir}" STREQUAL "-1")
+    set(CMAKE_INSTALL_RPATH "${CMAKE_INSTALL_PREFIX}/${PROJECT_INSTALL_LIBDIR}")
+  endif()
+
   # Define export set, only one for now
   set(PROJECT_EXPORT_SET ${PROJECT_NAME}Targets)
 endmacro()

fairmq/CMakeLists.txt

@@ -236,7 +236,10 @@ target_link_libraries(FairMQ
     ${NANOMSG_DEPS}
     ${OFI_DEPS}
 )
-
+set_target_properties(FairMQ PROPERTIES
+  VERSION ${PROJECT_VERSION}
+  SOVERSION "${PROJECT_VERSION_MAJOR}.${PROJECT_VERSION_MINOR}"
+)
 
 ###############
 # executables #