X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/362f7743fc754145e622fc3bdd3b94592c0e08f1..b33bdec7b1eb6f5780141d3df13200c608d42ed7:/FindSimGrid.cmake diff --git a/FindSimGrid.cmake b/FindSimGrid.cmake index 168c9c9a7d..ad4792e827 100644 --- a/FindSimGrid.cmake +++ b/FindSimGrid.cmake @@ -1,47 +1,129 @@ -#IF YOU HAVE INSTALL SIMGRID IN A SPECIAL DIRECTORY -#YOU CAN SPECIFY SIMGRID_ROOT OR GRAS_ROOT - -find_library(SIMGRID_LIB - NAME simgrid - HINTS - $ENV{SIMGRID_ROOT} - PATH_SUFFIXES lib +# CMake find module to search for the SimGrid library. + +# Copyright (c) 2016-2018. The SimGrid Team. +# +# This file is free software; you can redistribute it and/or modify it +# under the terms of the license (GNU LGPL) which comes with this package. + +# +# USERS OF PROGRAMS USING SIMGRID +# ------------------------------- +# +# If cmake does not find this file, add its path to CMAKE_PREFIX_PATH: +# CMAKE_PREFIX_PATH="/path/to/FindSimGrid.cmake:$CMAKE_PREFIX_PATH" cmake . +# +# If this file does not find SimGrid, define SimGrid_PATH: +# SimGrid_PATH=/path/to/simgrid cmake . + +# +# DEVELOPERS OF PROGRAMS USING SIMGRID +# ------------------------------------ +# +# 1. Include this file in your own CMakeLists.txt +# Either by copying it in your tree, or (recommended) by using the +# version automatically installed by SimGrid. +# +# 2. Afterward, if you have CMake >= 2.8.12, this will define a +# target called 'SimGrid::Simgrid'. Use it as: +# target_link_libraries(your-simulator SimGrid::SimGrid) +# +# With older CMake (< 2.8.12), it simply defines several variables: +# 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}) +# +# In both cases, it also define a SimGrid_VERSION macro, that you +# can use to deal with API evolutions as follows: +# +# #if SimGrid_VERSION < 31800 +# (code to use if the installed version is lower than v3.18) +# #elif SimGrid_VERSION < 31900 +# (code to use if we are using SimGrid v3.18.x) +# #else +# (code to use with SimGrid v3.19+) +# #endif + +# +# IMPROVING THIS FILE +# ------------------- +# - 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 ${SimGrid_PATH}/include /opt/simgrid/include +) +if (NOT SimGrid_INCLUDE_DIR) + # search under the old name + find_path(SimGrid_INCLUDE_DIR + NAMES simgrid_config.h + PATHS ${SimGrid_PATH}/include /opt/simgrid/include + ) +endif() +find_library(SimGrid_LIBRARY + NAMES simgrid + PATHS ${SimGrid_PATH}/lib /opt/simgrid/lib ) +mark_as_advanced(SimGrid_INCLUDE_DIR) +mark_as_advanced(SimGrid_LIBRARY) + +if (SimGrid_INCLUDE_DIR) + set(SimGrid_VERSION_REGEX "^#define SIMGRID_VERSION_(MAJOR|MINOR|PATCH) ([0-9]+)$") + if (EXISTS "${SimGrid_INCLUDE_DIR}/simgrid/config.h") + file(STRINGS "${SimGrid_INCLUDE_DIR}/simgrid/config.h" SimGrid_VERSION_STRING REGEX ${SimGrid_VERSION_REGEX}) + else() + file(STRINGS "${SimGrid_INCLUDE_DIR}/simgrid_config.h" SimGrid_VERSION_STRING REGEX ${SimGrid_VERSION_REGEX}) + endif() + set(SimGrid_VERSION "") -find_path(SIMGRID_INCLUDES msg/msg.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(SIMGRID_LIB) - message(STATUS "Looking for lib SimGrid - found") - get_filename_component(simgrid_version ${SIMGRID_LIB} REALPATH) - string(REPLACE "${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}") -else(SIMGRID_LIB) - message(STATUS "Looking for lib SimGrid - not found") -endif(SIMGRID_LIB) - -string(REGEX REPLACE "libsimgrid.*" "" SIMGRID_LIB_PATH "${SIMGRID_LIB}") - -message(STATUS "Simgrid : ${SIMGRID_LIB}") -message(STATUS "Simgrid_path : ${SIMGRID_LIB_PATH}") -message(STATUS "Simgrid version : ${SIMGRID_MAJOR_VERSION}.${SIMGRID_MINOR_VERSION}") - -message(STATUS "Looking for msg.h") -if(SIMGRID_INCLUDES) - message(STATUS "Looking for msg.h - found") -else(SIMGRID_INCLUDES) - message(STATUS "Looking for msg.h - not found") -endif(SIMGRID_INCLUDES) - -if(SIMGRID_LIB AND SIMGRID_INCLUDES) -else(SIMGRID_LIB AND SIMGRID_INCLUDES) - message(FATAL_ERROR "Unable to find both the library and the include files. Setting the environment variable SIMGRID_ROOT may help.") -endif(SIMGRID_LIB AND SIMGRID_INCLUDES) \ 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 ${SimGrid_LIBRARY} + ) + # We need C++11, so check for it just in case the user removed it since compiling SimGrid + if (NOT CMAKE_VERSION VERSION_LESS 3.8) + # 3.8+ allows us to simply require C++11 (or higher) + set_property(TARGET SimGrid::SimGrid PROPERTY INTERFACE_COMPILE_FEATURES cxx_std_11) + elseif (NOT CMAKE_VERSION VERSION_LESS 3.1) + # 3.1+ is similar but for certain features. We pick just one + set_property(TARGET SimGrid::SimGrid PROPERTY INTERFACE_COMPILE_FEATURES cxx_alias_templates) + else () + # Old CMake can't do much. Just check the CXX_FLAGS and inform the user when a C++11 feature does not work + include(CheckCXXSourceCompiles) + set(CMAKE_REQUIRED_FLAGS "${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 SimGrid. Enable it with e.g. -std=c++11") + endif () + unset(_SIMGRID_CXX11_ENABLED CACHE) + endif () +endif () +