1 # CMake find module to search for the SimGrid library.
3 # Copyright (c) 2016-2018. The SimGrid Team.
5 # This file is free software; you can redistribute it and/or modify it
6 # under the terms of the license (GNU LGPL) which comes with this package.
9 # USERS OF PROGRAMS USING SIMGRID
10 # -------------------------------
12 # If cmake does not find this file, add its path to CMAKE_PREFIX_PATH:
13 # CMAKE_PREFIX_PATH="/path/to/FindSimGrid.cmake:$CMAKE_PREFIX_PATH" cmake .
15 # If this file does not find SimGrid, define SimGrid_PATH:
16 # SimGrid_PATH=/path/to/simgrid cmake .
19 # DEVELOPERS OF PROGRAMS USING SIMGRID
20 # ------------------------------------
22 # 1. Include this file in your own CMakeLists.txt
23 # Either by copying it in your tree, or (recommended) by using the
24 # version automatically installed by SimGrid.
26 # 2. Afterward, if you have CMake >= 2.8.12, this will define a
27 # target called 'SimGrid::Simgrid'. Use it as:
28 # target_link_libraries(your-simulator SimGrid::SimGrid)
30 # With older CMake (< 2.8.12), it simply defines several variables:
31 # SimGrid_INCLUDE_DIR - the SimGrid include directories
32 # SimGrid_LIBRARY - link your simulator against it to use SimGrid
34 # include_directories("${SimGrid_INCLUDE_DIR}" SYSTEM)
35 # target_link_libraries(your-simulator ${SimGrid_LIBRARY})
37 # In both cases, it also define a SimGrid_VERSION macro, that you
38 # can use to deal with API evolutions as follows:
40 # #if SimGrid_VERSION < 31800
41 # (code to use if the installed version is lower than v3.18)
42 # #elif SimGrid_VERSION < 31900
43 # (code to use if we are using SimGrid v3.18.x)
45 # (code to use with SimGrid v3.19+)
51 # - Use automatic SimGridConfig.cmake creation via export/install(EXPORT in main CMakeLists.txt:
52 # https://cliutils.gitlab.io/modern-cmake/chapters/exporting.html
53 # https://cmake.org/Wiki/CMake/Tutorials/How_to_create_a_ProjectConfig.cmake_file
54 # https://github.com/boostcon/cppnow_presentations_2017/blob/master/05-19-2017_friday/effective_cmake__daniel_pfeifer__cppnow_05-19-2017.pdf
56 cmake_minimum_required(VERSION 2.8)
58 find_path(SimGrid_INCLUDE_DIR
59 NAMES simgrid_config.h
60 PATHS ${SimGrid_PATH}/include /opt/simgrid/include
62 find_library(SimGrid_LIBRARY
64 PATHS ${SimGrid_PATH}/lib /opt/simgrid/lib
66 mark_as_advanced(SimGrid_INCLUDE_DIR)
67 mark_as_advanced(SimGrid_LIBRARY)
69 if (SimGrid_INCLUDE_DIR)
70 set(SimGrid_VERSION_REGEX "^#define SIMGRID_VERSION_(MAJOR|MINOR|PATCH) ([0-9]+)$")
71 file(STRINGS "${SimGrid_INCLUDE_DIR}/simgrid_config.h" SimGrid_VERSION_STRING REGEX ${SimGrid_VERSION_REGEX})
72 set(SimGrid_VERSION "")
74 # Concat the matches to MAJOR.MINOR.PATCH assuming they appear in this order
75 foreach(match ${SimGrid_VERSION_STRING})
77 set(SimGrid_VERSION "${SimGrid_VERSION}.")
79 string(REGEX REPLACE ${SimGrid_VERSION_REGEX} "${SimGrid_VERSION}\\2" SimGrid_VERSION ${match})
80 set(SimGrid_VERSION_${CMAKE_MATCH_1} ${CMAKE_MATCH_2})
82 unset(SimGrid_VERSION_STRING)
83 unset(SimGrid_VERSION_REGEX)
86 include(FindPackageHandleStandardArgs)
87 find_package_handle_standard_args(SimGrid
88 FOUND_VAR SimGrid_FOUND
89 REQUIRED_VARS SimGrid_INCLUDE_DIR SimGrid_LIBRARY
90 VERSION_VAR SimGrid_VERSION
93 if (SimGrid_FOUND AND NOT CMAKE_VERSION VERSION_LESS 2.8.12)
94 add_library(SimGrid::SimGrid SHARED IMPORTED)
95 set_target_properties(SimGrid::SimGrid PROPERTIES
96 INTERFACE_SYSTEM_INCLUDE_DIRECTORIES ${SimGrid_INCLUDE_DIR}
97 INTERFACE_COMPILE_FEATURES cxx_alias_templates
98 IMPORTED_LOCATION ${SimGrid_LIBRARY}
100 # We need C++11, so check for it just in case the user removed it since compiling SimGrid
101 if (NOT CMAKE_VERSION VERSION_LESS 3.8)
102 # 3.8+ allows us to simply require C++11 (or higher)
103 set_property(TARGET SimGrid::SimGrid PROPERTY INTERFACE_COMPILE_FEATURES cxx_std_11)
104 elseif (NOT CMAKE_VERSION VERSION_LESS 3.1)
105 # 3.1+ is similar but for certain features. We pick just one
106 set_property(TARGET SimGrid::SimGrid PROPERTY INTERFACE_COMPILE_FEATURES cxx_alias_templates)
108 # Old CMake can't do much. Just check the CXX_FLAGS and inform the user when a C++11 feature does not work
109 include(CheckCXXSourceCompiles)
110 set(CMAKE_REQUIRED_FLAGS "${CMAKE_CXX_FLAGS}")
111 check_cxx_source_compiles("using Foo = int; int main(){}" _SIMGRID_CXX11_ENABLED)
112 if (NOT _SIMGRID_CXX11_ENABLED)
113 message(WARNING "C++11 is required to use SimGrid. Enable it with e.g. -std=c++11")
115 unset(_SIMGRID_CXX11_ENABLED CACHE)