From 83315b2951f01c93650be3c075a1cfe058957700 Mon Sep 17 00:00:00 2001
From: Dennis Klein <d.klein@gsi.de>
Date: Mon, 16 Apr 2018 01:36:51 +0200
Subject: [PATCH] Generate package dependencies

and install Version.h.
---
 CMakeLists.txt              | 75 ++++++++++++++++++++++++++-----------
 cmake/FairMQConfig.cmake.in | 57 ++++++++--------------------
 cmake/FairMQLib.cmake       | 61 ++++++++++++++++++++++++------
 cmake/FindMsgpack.cmake     | 39 -------------------
 4 files changed, 119 insertions(+), 113 deletions(-)
 delete mode 100644 cmake/FindMsgpack.cmake

diff --git a/CMakeLists.txt b/CMakeLists.txt
index f8a73b60..4bb575ae 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -17,7 +17,7 @@ set_fairmq_cmake_policies()
 get_git_version(OUTVAR_PREFIX FairMQ)
 
 project(FairMQ VERSION ${FairMQ_VERSION} LANGUAGES CXX)
-message(STATUS "${BWhite}${PROJECT_NAME}${CR} ${FairMQ_GIT_VERSION} from ${FairMQ_DATE}")
+message(STATUS "${BWhite}${PROJECT_NAME}${CR} ${${PROJECT_NAME}_GIT_VERSION} from ${${PROJECT_NAME}_DATE}")
 
 set_fairmq_defaults()
 
@@ -33,40 +33,69 @@ option(BUILD_DDS_PLUGIN "Build DDS plugin." OFF)
 
 
 # Dependencies #################################################################
+set(dep Boost)
+set(PROJECT_${dep}_VERSION 1.64)
+set(PROJECT_${dep}_COMPONENTS program_options thread system filesystem regex date_time signals)
 if(Boost_INCLUDE_DIR) # Silence output, if Boost was found already
   set(SILENCE_BOOST QUIET)
 endif()
-find_package(Boost 1.64 ${SILENCE_BOOST} REQUIRED
-  COMPONENTS program_options thread system filesystem regex date_time signals
-)
+find_package(${dep} ${PROJECT_${dep}_VERSION} ${SILENCE_BOOST} REQUIRED COMPONENTS ${PROJECT_${dep}_COMPONENTS})
+list(APPEND PROJECT_PACKAGE_DEPENDENCIES ${dep})
 
-set(CMAKE_PREFIX_PATH ${FAIRLOGGER_ROOT} $ENV{FAIRLOGGER_ROOT} ${CMAKE_PREFIX_PATH})
-find_package(FairLogger 1.0.1 REQUIRED)
+set(dep FairLogger)
+set(PROJECT_${dep}_VERSION 1.0.2)
+string(TOUPPER ${dep} upper_dep)
+set(old ${CMAKE_PREFIX_PATH})
+set(CMAKE_PREFIX_PATH ${${upper_dep}_ROOT} $ENV{${upper_dep}_ROOT} ${CMAKE_PREFIX_PATH})
+find_package(${dep} ${PROJECT_${dep}_VERSION} REQUIRED)
+list(APPEND PROJECT_PACKAGE_DEPENDENCIES ${dep})
+set(CMAKE_PREFIX_PATH ${old})
 
-find_package(ZeroMQ 4.2.2 REQUIRED)
+set(dep ZeroMQ)
+set(PROJECT_${dep}_VERSION 4.2.2)
+find_package(${dep} ${PROJECT_${dep}_VERSION} REQUIRED)
+list(APPEND PROJECT_PACKAGE_DEPENDENCIES ${dep})
 
 if(BUILD_NANOMSG_TRANSPORT)
-  find_package(nanomsg REQUIRED)
-  set(CMAKE_PREFIX_PATH ${MSGPACK_ROOT} $ENV{MSGPACK_ROOT} ${CMAKE_PREFIX_PATH})
-  find_package(msgpack 2.1.5 REQUIRED)
+  set(dep nanomsg)
+  find_package(${dep} REQUIRED)
+  list(APPEND PROJECT_PACKAGE_DEPENDENCIES ${dep})
+
+  set(dep msgpack)
+  set(PROJECT_${dep}_VERSION 2.1.5)
+  string(TOUPPER ${dep} upper_dep)
+  set(old ${CMAKE_PREFIX_PATH})
+  set(CMAKE_PREFIX_PATH ${${upper_dep}_ROOT} $ENV{${upper_dep}_ROOT} ${CMAKE_PREFIX_PATH})
+  find_package(${dep} ${PROJECT_${dep}_VERSION} REQUIRED)
+  list(APPEND PROJECT_PACKAGE_DEPENDENCIES ${dep})
+  set(CMAKE_PREFIX_PATH ${old})
 endif()
 
 if(BUILD_OFI_TRANSPORT)
-  find_package(OFI 1.6.0 REQUIRED COMPONENTS fi_sockets)
+  set(dep OFI)
+  set(PROJECT_${dep}_VERSION 1.6.0)
+  set(PROJECT_${dep}_COMPONENTS fi_sockets)
+  find_package(${dep} ${PROJECT_${dep}_VERSION} REQUIRED COMPONENTS ${PROJECT_${dep}_COMPONENTS})
+  list(APPEND PROJECT_PACKAGE_DEPENDENCIES ${dep})
 endif()
 
 if(BUILD_DDS_PLUGIN)
-  find_package(DDS 2.0 REQUIRED)
+  set(dep DDS)
+  set(PROJECT_${dep}_VERSION 2.0)
+  find_package(${dep} ${PROJECT_${dep}_VERSION} REQUIRED)
+  list(APPEND PROJECT_PACKAGE_DEPENDENCIES ${dep})
 endif()
 
 if(BUILD_TESTING)
-  find_package(GTest REQUIRED)
+  set(dep GTest)
+  set(PROJECT_${dep}_VERSION 1.7.0)
+  find_package(${dep} ${PROJECT_${dep}_VERSION} REQUIRED)
+  list(APPEND PROJECT_PACKAGE_DEPENDENCIES ${dep})
 endif()
 ################################################################################
 
 
 # Targets ######################################################################
-# Configure Version.hpp
 configure_file(${PROJECT_NAME_LOWER}/Version.h.in
   ${CMAKE_BINARY_DIR}/${PROJECT_NAME_LOWER}/Version.h
   @ONLY
@@ -81,7 +110,11 @@ endif()
 
 
 # Installation #################################################################
-install_fairmq_cmake_package()
+install(FILE ${CMAKE_BINARY_DIR}/${PROJECT_NAME_LOWER}/Version.h
+  DESTINATION ${PROJECT_INSTALL_INCDIR}
+)
+
+install_cmake_package()
 ################################################################################
 
 
@@ -95,18 +128,18 @@ else()
   set(tests_summary "${BRed} NO${CR}    (enable with ${BMagenta}-DBUILD_TESTING=ON${CR})")
 endif()
 message(STATUS "  ${BWhite}tests${CR}              ${tests_summary}")
-if(BUILD_OFI_TRANSPORT)
-  set(ofi_summary "${BGreen}YES${CR}    (disable with ${BMagenta}-DBUILD_OFI_TRANSPORT=OFF${CR})")
-else()
-  set(ofi_summary "${BRed} NO${CR}    (default, enable with ${BMagenta}-DBUILD_OFI_TRANSPORT=ON${CR})")
-endif()
-message(STATUS "  ${BWhite}OFI transport${CR}      ${ofi_summary} Experimental")
 if(BUILD_NANOMSG_TRANSPORT)
   set(nn_summary "${BGreen}YES${CR}    (disable with ${BMagenta}-DBUILD_NANOMSG_TRANSPORT=OFF${CR})")
 else()
   set(nn_summary "${BRed} NO${CR}    (default, enable with ${BMagenta}-DBUILD_NANOMSG_TRANSPORT=ON${CR})")
 endif()
 message(STATUS "  ${BWhite}nanomsg transport${CR}  ${nn_summary}")
+if(BUILD_OFI_TRANSPORT)
+  set(ofi_summary "${BGreen}YES${CR}    (disable with ${BMagenta}-DBUILD_OFI_TRANSPORT=OFF${CR})")
+else()
+  set(ofi_summary "${BRed} NO${CR}    (default, enable with ${BMagenta}-DBUILD_OFI_TRANSPORT=ON${CR})")
+endif()
+message(STATUS "  ${BWhite}OFI transport${CR}      ${ofi_summary} Experimental")
 if(BUILD_DDS_PLUGIN)
   set(dds_summary "${BGreen}YES${CR}    (disable with ${BMagenta}-DBUILD_DDS_PLUGIN=OFF${CR})")
 else()
diff --git a/cmake/FairMQConfig.cmake.in b/cmake/FairMQConfig.cmake.in
index fcaac6d6..f8e895ee 100644
--- a/cmake/FairMQConfig.cmake.in
+++ b/cmake/FairMQConfig.cmake.in
@@ -11,55 +11,28 @@ cmake_minimum_required(VERSION 3.9.4 FATAL_ERROR)
 @PACKAGE_INIT@
 
 ### General variables for project discovery/inspection
-set(FAIRMQ_VERSION @PROJECT_VERSION@)
-set(FAIRMQ_GIT_VERSION @FAIRMQ_GIT_VERSION@)
+set(@PROJECT_NAME@_VERSION @PROJECT_VERSION@)
+set(@PROJECT_NAME@_GIT_VERSION @PROJECT_GIT_VERSION@)
+set(@PROJECT_NAME@_GIT_DATE @PROJECT_GIT_DATE@)
 
-set_and_check(FairMQ_ROOT @PACKAGE_CMAKE_INSTALL_PREFIX@)
-set_and_check(FairMQ_BINDIR @PACKAGE_CMAKE_INSTALL_PREFIX@/@FairMQ_INSTALL_BINDIR@)
-set_and_check(FairMQ_INCDIR @PACKAGE_CMAKE_INSTALL_PREFIX@/@FairMQ_INSTALL_INCDIR@)
-set_and_check(FairMQ_LIBDIR @PACKAGE_CMAKE_INSTALL_PREFIX@/@FairMQ_INSTALL_LIBDIR@)
-set_and_check(FairMQ_DATADIR @PACKAGE_CMAKE_INSTALL_PREFIX@/@FairMQ_INSTALL_DATADIR@)
-set_and_check(FairMQ_CMAKEMODDIR @PACKAGE_CMAKE_INSTALL_PREFIX@/@FairMQ_INSTALL_CMAKEMODDIR@)
+set_and_check(@PROJECT_NAME@_ROOT @PACKAGE_CMAKE_INSTALL_PREFIX@)
+set_and_check(@PROJECT_NAME@_BINDIR @PACKAGE_CMAKE_INSTALL_PREFIX@/@PROJECT_INSTALL_BINDIR@)
+set_and_check(@PROJECT_NAME@_INCDIR @PACKAGE_CMAKE_INSTALL_PREFIX@/@PROJECT_INSTALL_INCDIR@)
+set_and_check(@PROJECT_NAME@_LIBDIR @PACKAGE_CMAKE_INSTALL_PREFIX@/@PROJECT_INSTALL_LIBDIR@)
+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@)
 
 ### Import cmake modules
-set(CMAKE_MODULE_PATH ${FairMQ_CMAKEMODDIR} ${CMAKE_MODULE_PATH})
+set(CMAKE_MODULE_PATH ${@PROJECT_NAME@_CMAKEMODDIR} ${CMAKE_MODULE_PATH})
 
-### Package dependencies
-include(CMakeFindDependencyMacro)
-
-if(    NOT (FairMQ_BOOST_DISABLED OR FairMQ_PACKAGE_DEPENDENCIES_DISABLED)
-   AND (@Boost_FOUND@ OR FairMQ_Boost_REQUIRED))
-  set(FairMQ_Boost_COMPONENTS system)
-  if(FairMQ_ADDITIONAL_Boost_COMPONENTS)
-    list(APPEND FairMQ_Boost_COMPONENTS ${FairMQ_ADDITIONAL_Boost_COMPONENTS})
-    list(REMOVE_DUPLICATES FairMQ_Boost_COMPONENTS)
-  endif()
-  if(Boost_INCLUDE_DIR) # checks for cached boost variable which indicates if Boost is already found
-    set(SILENCE_BOOST QUIET)
-  endif()
-  find_dependency(Boost 1.64 ${SILENCE_BOOST}
-    COMPONENTS ${FairMQ_Boost_COMPONENTS}
-  )
-endif()
-
-if(    NOT (FairMQ_OFI_DISABLED OR FairMQ_PACKAGE_DEPENDENCIES_DISABLED)
-   AND (@OFI_FOUND@ OR FairMQ_OFI_REQUIRED))
-  set(FairMQ_OFI_COMPONENTS fi_sockets)
-  if(FairMQ_ADDITIONAL_OFI_COMPONENTS)
-    list(APPEND FairMQ_OFI_COMPONENTS ${FairMQ_ADDITIONAL_OFI_COMPONENTS})
-    list(REMOVE_DUPLICATES FairMQ_OFI_COMPONENTS)
-  endif()
-  find_dependency(OFI 1.6.0
-    COMPONENTS ${FairMQ_OFI_COMPONENTS}
-  )
-endif()
+@PACKAGE_DEPENDENCIES@
 
 ### Import targets
-include(@PACKAGE_CMAKE_INSTALL_PREFIX@/@PACKAGE_INSTALL_DESTINATION@/FairMQTargets.cmake)
+include(@PACKAGE_CMAKE_INSTALL_PREFIX@/@PACKAGE_INSTALL_DESTINATION@/@PROJECT_NAME@Targets.cmake)
 
 ### Alias target for backwards compat (DEPRECATED)
-if(NOT TARGET FairRoot::FairMQ)
-  add_library(FairRoot::FairMQ ALIAS FairMQ::FairMQ)
+if(NOT TARGET FairRoot::@PROJECT_NAME@)
+  add_library(FairRoot::@PROJECT_NAME@ ALIAS @PROJECT_NAME@::@PROJECT_NAME@)
 endif()
 
-check_required_components(FairMQ)
+check_required_components(@PROJECT_NAME@)
diff --git a/cmake/FairMQLib.cmake b/cmake/FairMQLib.cmake
index de02b832..9fbbba08 100644
--- a/cmake/FairMQLib.cmake
+++ b/cmake/FairMQLib.cmake
@@ -54,7 +54,7 @@ function(get_git_version)
   cmake_parse_arguments(ARGS "" "DEFAULT_VERSION;DEFAULT_DATE;OUTVAR_PREFIX" "" ${ARGN})
 
   if(NOT ARGS_OUTVAR_PREFIX)
-    set(ARGS_OUTVAR_PREFIX FairMQ)
+    set(ARGS_OUTVAR_PREFIX PROJECT)
   endif()
 
   if(GIT_FOUND AND EXISTS ${CMAKE_SOURCE_DIR}/.git)
@@ -127,29 +127,67 @@ macro(set_fairmq_defaults)
   include(GNUInstallDirs)
 
   # Define install dirs
-  set(FairMQ_INSTALL_BINDIR ${CMAKE_INSTALL_BINDIR})
-  set(FairMQ_INSTALL_LIBDIR ${CMAKE_INSTALL_LIBDIR}/${PROJECT_NAME_LOWER})
-  set(FairMQ_INSTALL_INCDIR ${CMAKE_INSTALL_INCLUDEDIR}/${PROJECT_NAME_LOWER})
-  set(FairMQ_INSTALL_DATADIR ${CMAKE_INSTALL_DATADIR}/${PROJECT_NAME_LOWER})
-  set(FairMQ_INSTALL_CMAKEMODDIR ${FairMQ_INSTALL_DATADIR}/cmake)
+  set(PROJECT_INSTALL_BINDIR ${CMAKE_INSTALL_BINDIR})
+  set(PROJECT_INSTALL_LIBDIR ${CMAKE_INSTALL_LIBDIR}/${PROJECT_NAME_LOWER})
+  set(PROJECT_INSTALL_INCDIR ${CMAKE_INSTALL_INCLUDEDIR}/${PROJECT_NAME_LOWER})
+  set(PROJECT_INSTALL_DATADIR ${CMAKE_INSTALL_DATADIR}/${PROJECT_NAME_LOWER})
+  set(PROJECT_INSTALL_CMAKEMODDIR ${${PROJECT_NAME}_INSTALL_DATADIR}/cmake)
 
   # Define export set, only one for now
-  set(FairMQ_EXPORT_SET ${PROJECT_NAME}Targets)
+  set(PROJECT_EXPORT_SET ${PROJECT_NAME}Targets)
 endmacro()
 
+macro(generate_package_dependencies)
+  set(PACKAGE_DEPENDENCIES "\
+include(CMakeFindDependencyMacro)
+
+set(${PROJECT_NAME}_PACKAGE_DEPENDENCIES ${PROJECT_PACKAGE_DEPENDENCIES})
+
+")
+  foreach(dep IN LISTS PROJECT_PACKAGE_DEPENDENCIES)
+    string(CONCAT ${PACKAGE_DEPENDENCIES} "\
+set(${PROJECT_NAME}_${dep}_COMPONENTS ${PROJECT_${dep}_COMPONENTS})
+set(${PROJECT_NAME}_${dep}_VERSION ${PROJECT_${dep}_VERSION})
+set(${PROJECT_NAME}_${dep}_FOUND ${${dep}_FOUND})
+
+")
+  endforeach()
+  string(CONCAT ${PACKAGE_DEPENDENCIES} "\
+if(Boost_INCLUDE_DIR) # checks for cached boost variable which indicates if Boost is already found
+  set(${PROJECT_NAME}_Boost_QUIET QUIET)
+endif()
+
+foreach(dep IN LISTS ${PROJECT_NAME}_PACKAGE_DEPENDENCIES)
+  if(    NOT (${PROJECT_NAME}_\${dep}_DISABLED OR ${PROJECT_NAME}_PACKAGE_DEPENDENCIES_DISABLED)
+    AND (${PROJECT_NAME}_\${dep}_FOUND OR ${PROJECT_NAME}_\${dep}_REQUIRED))
+    if(${PROJECT_NAME}_ADDITIONAL_\${dep}_COMPONENTS)
+      list(APPEND ${PROJECT_NAME}_\${dep}_COMPONENTS \${${PROJECT_NAME}_ADDITIONAL_\${dep}_COMPONENTS})
+      list(REMOVE_DUPLICATES ${PROJECT_NAME}_\${dep}_COMPONENTS)
+    endif()
+    if(${PROJECT_NAME}_\${dep}_COMPONENTS)
+      set(components COMPONENTS \${${PROJECT_NAME}_\${dep}_COMPONENTS})
+    else()
+      set(components)
+    endif()
+    find_dependency(\${dep} \${${PROJECT_NAME}_\${dep}_VERSION} \${${PROJECT_NAME}_\${dep}_QUIET} \${components})
+  endif()
+endforeach()
+")
+endmacro()
 
 # Configure/Install CMake package
-macro(install_fairmq_cmake_package)
+macro(install_cmake_package)
   # Install cmake modules
-  install( FILES cmake/FindOFI.cmake
-    DESTINATION ${FairMQ_INSTALL_CMAKEMODDIR}
+  install(DIRECTORY cmake
+    PATTERN "cmake/Find*.cmake"
+    DESTINATION ${${PROJECT_NAME}_INSTALL_CMAKEMODDIR}
   )
 
   include(CMakePackageConfigHelpers)
   set(PACKAGE_INSTALL_DESTINATION
     ${CMAKE_INSTALL_LIBDIR}/cmake/${PROJECT_NAME}-${PROJECT_VERSION}
   )
-  install(EXPORT ${FairMQ_EXPORT_SET}
+  install(EXPORT ${${PROJECT_NAME}_EXPORT_SET}
     NAMESPACE ${PROJECT_NAME}::
     DESTINATION ${PACKAGE_INSTALL_DESTINATION}
     EXPORT_LINK_INTERFACE_LIBRARIES
@@ -158,6 +196,7 @@ macro(install_fairmq_cmake_package)
     ${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}ConfigVersion.cmake
     COMPATIBILITY AnyNewerVersion
   )
+  generate_package_dependencies() # fills ${PACKAGE_DEPENDENCIES}
   configure_package_config_file(
     ${CMAKE_SOURCE_DIR}/cmake/${PROJECT_NAME}Config.cmake.in
     ${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}Config.cmake
diff --git a/cmake/FindMsgpack.cmake b/cmake/FindMsgpack.cmake
deleted file mode 100644
index 27b69498..00000000
--- a/cmake/FindMsgpack.cmake
+++ /dev/null
@@ -1,39 +0,0 @@
-################################################################################
-# Copyright (C) 2014-2018 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"                       #
-################################################################################
-
-find_path(MSGPACK_INCLUDE_DIR
-  NAMES msgpack.hpp
-  HINTS ${MSGPACK_ROOT} $ENV{MSGPACK_ROOT}
-  PATH_SUFFIXES include
-)
-
-find_path(MSGPACK_LIBRARY_DIR
-  NAMES libmsgpackc.dylib libmsgpackc.so
-  HINTS ${MSGPACK_ROOT} $ENV{MSGPACK_ROOT}
-  PATH_SUFFIXES lib
-)
-
-find_library(MSGPACK_LIBRARY_SHARED
-  NAMES libmsgpackc.dylib libmsgpackc.so
-  HINTS ${MSGPACK_ROOT} $ENV{MSGPACK_ROOT}
-  PATH_SUFFIXES lib
-)
-
-include(FindPackageHandleStandardArgs)
-find_package_handle_standard_args(Msgpack
-  REQUIRED_VARS MSGPACK_INCLUDE_DIR MSGPACK_LIBRARY_DIR MSGPACK_LIBRARY_SHARED
-)
-
-# idempotently import targets
-if(NOT TARGET Msgpack AND Msgpack_FOUND)
-  add_library(Msgpack SHARED IMPORTED)
-  set_target_properties(Msgpack PROPERTIES
-    IMPORTED_LOCATION ${MSGPACK_LIBRARY_SHARED}
-    INTERFACE_INCLUDE_DIRECTORIES ${MSGPACK_INCLUDE_DIR}
-  )
-endif()