-#IF YOU HAVE INSTALL SIMGRID IN A SPECIAL DIRECTORY
-#YOU CAN SPECIFY SIMGRID_ROOT OR GRAS_ROOT
-
-find_library(HAVE_SIMGRID_LIB
- NAME simgrid
- HINTS
- $ENV{SIMGRID_ROOT}
- PATH_SUFFIXES lib
+# CMake find module to search for the SimGrid library.
+
+# Copyright (c) 2016-2018. The SimGrid Team.
+#
+# This file is free software; you can redistribute it and/or modify it
+# under the terms of the license (GNU LGPL) which comes with this package.
+
+# Once done, the following will be defined:
+#
+# CMake >= 2.8.12:
+# Target SimGrid::Simgrid
+#
+# Use as:
+# target_link_libraries(your-simulator SimGrid::SimGrid)
+#
+# Older CMake (< 2.8.12)
+# SimGrid_INCLUDE_DIR - the SimGrid include directories
+# SimGrid_LIBRARY - link your simulator against it to use SimGrid
+#
+# Use as:
+# include_directories("${SimGrid_INCLUDE_DIR}" SYSTEM)
+# target_link_libraries(your-simulator ${SimGrid_LIBRARY})
+#
+# This could be improved:
+# - Use automatic SimGridConfig.cmake creation via export/install(EXPORT in main CMakeLists.txt:
+# https://cliutils.gitlab.io/modern-cmake/chapters/exporting.html
+# https://cmake.org/Wiki/CMake/Tutorials/How_to_create_a_ProjectConfig.cmake_file
+# https://github.com/boostcon/cppnow_presentations_2017/blob/master/05-19-2017_friday/effective_cmake__daniel_pfeifer__cppnow_05-19-2017.pdf
+
+cmake_minimum_required(VERSION 2.8)
+
+find_path(SimGrid_INCLUDE_DIR
+ NAMES simgrid_config.h
+ PATHS /opt/simgrid/include
)
+find_library(SimGrid_LIBRARY
+ NAMES simgrid
+ PATHS /opt/simgrid/lib
+)
+mark_as_advanced(SimGrid_INCLUDE_DIR)
+mark_as_advanced(SimGrid_LIBRARY)
+
+if (SimGrid_INCLUDE_DIR)
+ set(SimGrid_VERSION_REGEX "^#define SIMGRID_VERSION_(MAJOR|MINOR|PATCH) ([0-9]+)$")
+ file(STRINGS "${SimGrid_INCLUDE_DIR}/simgrid_config.h" SimGrid_VERSION_STRING REGEX ${SimGrid_VERSION_REGEX})
+ set(SimGrid_VERSION "")
-find_path(HAVE_GRAS_H gras.h
- HINTS
- $ENV{SIMGRID_ROOT}
- PATH_SUFFIXES include
+ # Concat the matches to MAJOR.MINOR.PATCH assuming they appear in this order
+ foreach(match ${SimGrid_VERSION_STRING})
+ if(SimGrid_VERSION)
+ set(SimGrid_VERSION "${SimGrid_VERSION}.")
+ endif()
+ string(REGEX REPLACE ${SimGrid_VERSION_REGEX} "${SimGrid_VERSION}\\2" SimGrid_VERSION ${match})
+ set(SimGrid_VERSION_${CMAKE_MATCH_1} ${CMAKE_MATCH_2})
+ endforeach()
+ unset(SimGrid_VERSION_STRING)
+ unset(SimGrid_VERSION_REGEX)
+endif ()
+
+include(FindPackageHandleStandardArgs)
+find_package_handle_standard_args(SimGrid
+ FOUND_VAR SimGrid_FOUND
+ REQUIRED_VARS SimGrid_INCLUDE_DIR SimGrid_LIBRARY
+ VERSION_VAR SimGrid_VERSION
)
-message(STATUS "Looking for lib SimGrid")
-if(HAVE_SIMGRID_LIB)
- message(STATUS "Looking for lib SimGrid - found")
- if(CMAKE_CACHE_MAJOR_VERSION EQUAL "2" AND CMAKE_CACHE_MINOR_VERSION GREATER "7") #need cmake version 2.8
- get_filename_component(simgrid_version ${HAVE_SIMGRID_LIB} REALPATH)
- string(REPLACE "${HAVE_SIMGRID_LIB}." "" simgrid_version "${simgrid_version}")
- string(REGEX MATCH "^[0-9]" SIMGRID_MAJOR_VERSION "${simgrid_version}")
- string(REGEX MATCH "^[0-9].[0-9]" SIMGRID_MINOR_VERSION "${simgrid_version}")
- string(REGEX MATCH "^[0-9].[0-9].[0-9]" SIMGRID_PATCH_VERSION "${simgrid_version}")
- string(REGEX REPLACE "^${SIMGRID_MINOR_VERSION}." "" SIMGRID_PATCH_VERSION "${SIMGRID_PATCH_VERSION}")
- string(REGEX REPLACE "^${SIMGRID_MAJOR_VERSION}." "" SIMGRID_MINOR_VERSION "${SIMGRID_MINOR_VERSION}")
- message(STATUS "Simgrid version : ${SIMGRID_MAJOR_VERSION}.${SIMGRID_MINOR_VERSION}")
- endif(CMAKE_CACHE_MAJOR_VERSION EQUAL "2" AND CMAKE_CACHE_MINOR_VERSION GREATER "7")
-else(HAVE_SIMGRID_LIB)
- message(STATUS "Looking for lib SimGrid - not found")
-endif(HAVE_SIMGRID_LIB)
-
-message(STATUS "Looking for gras.h")
-if(HAVE_GRAS_H)
-message(STATUS "Looking for gras.h - found")
-else(HAVE_GRAS_H)
-message(STATUS "Looking for gras.h - not found")
-endif(HAVE_GRAS_H)
-
-if(HAVE_SIMGRID_LIB AND HAVE_GRAS_H)
-else(HAVE_SIMGRID_LIB AND HAVE_GRAS_H)
- message(FATAL_ERROR "You need to install simgrid and set environment variable SIMGRID_ROOT!")
-endif(HAVE_SIMGRID_LIB AND HAVE_GRAS_H)
\ No newline at end of file
+if (SimGrid_FOUND AND NOT CMAKE_VERSION VERSION_LESS 2.8.12)
+ add_library(SimGrid::SimGrid SHARED IMPORTED)
+ set_target_properties(SimGrid::SimGrid PROPERTIES
+ INTERFACE_SYSTEM_INCLUDE_DIRECTORIES ${SimGrid_INCLUDE_DIR}
+ INTERFACE_COMPILE_FEATURES cxx_alias_templates
+ IMPORTED_LOCATION ${SimGrid_LIBRARY}
+ )
+ # We need C++11, so check for it
+ if (NOT CMAKE_VERSION VERSION_LESS 3.8)
+ # 3.8+ allows us to simply require C++11 (or higher)
+ set_property(TARGET SimGrid::SimGrid PROPERTY INTERFACE_COMPILE_FEATURES cxx_std_11)
+ elseif (NOT CMAKE_VERSION VERSION_LESS 3.1)
+ # 3.1+ is similar but for certain features. We pick just one
+ set_property(TARGET SimGrid::SimGrid PROPERTY INTERFACE_COMPILE_FEATURES cxx_alias_templates)
+ else ()
+ # Old CMake can't do much. Just check the CXX_FLAGS and inform the user when a C++11 feature does not work
+ include(CheckCXXSourceCompiles)
+ set(CMAKE_REQUIRED_FLAGS "${CMAKE_CXX_FLAGS}")
+ check_cxx_source_compiles("using Foo = int; int main(){}" _SIMGRID_CXX11_ENABLED)
+ if (NOT _SIMGRID_CXX11_ENABLED)
+ message(WARNING "C++11 is required to use this library. Enable it with e.g. -std=c++11")
+ endif ()
+ unset(_SIMGRID_CXX11_ENABLED CACHE)
+ endif ()
+endif ()
+
