X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/3cf8dfbfab4595b3e7ae85d3cd89ce9dbcdd7a24..4c0f097ce86c3fee37663cfcf88cf3d3dc8da088:/CMakeLists.txt

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 48070fd9d8..58aa7888c7 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -16,63 +16,55 @@ endif()
 ## 
 ## Check the C/C++ standard that we need
 ##   See also tools/cmake/GCCFlags.cmake that sets our paranoid warning flags
-if (MSVC)
-  message("-- You are compiling SimGrid with MicroSoft Visual C. Good luck.")
-
-  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -D_SCL_SECURE_NO_WARNINGS")
-  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -D_SCL_SECURE_NO_WARNINGS")
-else() # gcc or clang
-  INCLUDE(CheckCCompilerFlag)
-  CHECK_C_COMPILER_FLAG(-fstack-cleaner HAVE_C_STACK_CLEANER)
-
-  ## Request full debugging flags
-  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -g3")
-  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -g3")
-  set(CMAKE_Fortran_FLAGS "${CMAKE_Fortran_FLAGS} -g")
-
-  if (CMAKE_COMPILER_IS_GNUCC)    
-    if (CMAKE_CXX_COMPILER_VERSION VERSION_LESS "4.7")
-      message(FATAL_ERROR
-              "SimGrid needs at least g++ version 4.7 to compile but you have ${CMAKE_CXX_COMPILER_VERSION}."
-  	      "You need a sufficient support of c++11 to compile SimGrid.")
-    endif()
+INCLUDE(CheckCCompilerFlag)
+CHECK_C_COMPILER_FLAG(-fstack-cleaner HAVE_C_STACK_CLEANER)
+
+## Request full debugging flags
+set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -g3")
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -g3")
+set(CMAKE_Fortran_FLAGS "${CMAKE_Fortran_FLAGS} -g")
+
+if (CMAKE_COMPILER_IS_GNUCC)    
+  if (CMAKE_CXX_COMPILER_VERSION VERSION_LESS "4.7")
+    message(FATAL_ERROR
+            "SimGrid needs at least g++ version 4.7 to compile but you have ${CMAKE_CXX_COMPILER_VERSION}."
+            "You need a sufficient support of c++11 to compile SimGrid.")
   endif()
+endif()
 
-  ## We need a decent support of the c++11 standard
-  include(CheckCXXCompilerFlag)
-  CHECK_CXX_COMPILER_FLAG("-std=gnu++11" COMPILER_SUPPORTS_CXX11)
-  if(COMPILER_SUPPORTS_CXX11)
-    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=gnu++11")
-  else() 
-    message(FATAL_ERROR 
-            "The compiler ${CMAKE_CXX_COMPILER} (v${CMAKE_CXX_COMPILER_VERSION}) has no C++11 support. "
-            "Please use a decent C++ compiler.")
-  endif()
+## We need a decent support of the c++11 standard
+include(CheckCXXCompilerFlag)
+CHECK_CXX_COMPILER_FLAG("-std=gnu++11" COMPILER_SUPPORTS_CXX11)
+if(COMPILER_SUPPORTS_CXX11)
+  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=gnu++11")
+else() 
+  message(FATAL_ERROR 
+          "The compiler ${CMAKE_CXX_COMPILER} (v${CMAKE_CXX_COMPILER_VERSION}) has no C++11 support. "
+           "Please use a decent C++ compiler.")
+endif()
 
-  ### And we need C11 standard, too
-  include(CheckCCompilerFlag)
-  CHECK_C_COMPILER_FLAG("-std=gnu11" COMPILER_SUPPORTS_C11)
-  if(COMPILER_SUPPORTS_C11)
-    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -std=gnu11")
-  else()
-    message(FATAL_ERROR 
-            "The compiler ${CMAKE_C_COMPILER} (v${CMAKE_C_COMPILER_VERSION}) has no C11 support. "
-            "Please use a decent C compiler "
-            "(note that c++11 support of ${CMAKE_CXX_COMPILER} seems ok).")
-  endif()
-  if(APPLE AND (CMAKE_C_COMPILER_VERSION VERSION_LESS "4.6"))
-      ### gcc 4.[1-5] cannot compile ucontext on OSX
-      message(STATUS "Ucontext can't be used with this version of gcc (must be greater than 4.5)")
-      set(HAVE_UCONTEXT_H 0)
-  endif()
-endif() # NOT MSVC
+### And we need C11 standard, too
+include(CheckCCompilerFlag)
+CHECK_C_COMPILER_FLAG("-std=gnu11" COMPILER_SUPPORTS_C11)
+if(COMPILER_SUPPORTS_C11)
+  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -std=gnu11")
+else()
+  message(FATAL_ERROR 
+          "The compiler ${CMAKE_C_COMPILER} (v${CMAKE_C_COMPILER_VERSION}) has no C11 support. "
+          "Please use a decent C compiler "
+          "(note that c++11 support of ${CMAKE_CXX_COMPILER} seems ok).")
+endif()
+if(APPLE AND (CMAKE_C_COMPILER_VERSION VERSION_LESS "4.6"))
+  ### gcc 4.[1-5] cannot compile ucontext on OSX
+  message(STATUS "Ucontext can't be used with this version of gcc (must be greater than 4.5)")
+  set(HAVE_UCONTEXT_H 0)
+endif()
 
 ### SMPI vs. Fortran
 if ((NOT DEFINED enable_smpi OR enable_smpi) AND NOT APPLE) # smpi is enabled by default
-  # Call enable_language(Fortran) in order to load the build rules for
-  # this language, needed by teshsuite/smpi/mpich-test/.  Use
-  # CMAKE_FORCE_Fortran_COMPILER to bypass checks for a working
-  # compiler (smpiff don't exist at configure time).
+  # Call enable_language(Fortran) in order to load the build rules for this language, needed by 
+  # teshsuite/smpi/mpich-test/.  Use CMAKE_FORCE_Fortran_COMPILER to bypass checks for a working compiler (smpiff 
+  # doesn't exist at configure time).
   include(CMakeForceCompiler)
   if(NOT COMMAND CMAKE_FORCE_Fortran_COMPILER)
     MACRO(CMAKE_FORCE_Fortran_COMPILER compiler id)
@@ -98,8 +90,8 @@ endif()
 
 set(SIMGRID_VERSION_MAJOR "3")
 set(SIMGRID_VERSION_MINOR "13")
-set(SIMGRID_VERSION_PATCH "0")
-set(SIMGRID_VERSION_EXTRA "-devel") # Extra words to add to version string (e.g. -rc1)
+set(SIMGRID_VERSION_PATCH "90")
+set(SIMGRID_VERSION_EXTRA "-prealpha") # Extra words to add to version string (e.g. -rc1)
 
 set(SIMGRID_VERSION_DATE  "2016") # Year for copyright information
 
@@ -110,12 +102,6 @@ else()
 endif()
 
 set(SIMGRID_VERSION_STRING "SimGrid version ${release_version}${SIMGRID_VERSION_EXTRA}")
-set(SIMGRID_VERSION_BANNER "SIMGRID_VERSION_STRING\\nCopyright (c) 2004-${SIMGRID_VERSION_DATE}. The Simgrid Team.")
-if(release)
-  set(SIMGRID_VERSION_BANNER "${SIMGRID_VERSION_BANNER}\\nRelease build")
-else()
-  set(SIMGRID_VERSION_BANNER "${SIMGRID_VERSION_BANNER}\\nDevelopment build")
-endif()
 
 set(libsimgrid_version "${release_version}")
 set(libsimgrid-java_version "${release_version}")
@@ -132,7 +118,7 @@ else()
   endif()
 endif()
 
-exec_program("${CMAKE_LINKER} --version" OUTPUT_VARIABLE "LINKER_VERSION")
+execute_process(COMMAND   ${CMAKE_LINKER}   --version    OUTPUT_VARIABLE LINKER_VERSION)
 string(REGEX MATCH "[0-9].[0-9]*" LINKER_VERSION "${LINKER_VERSION}")
 
 ### Find programs and paths
@@ -169,14 +155,12 @@ ELSE()
 ENDIF()
 
 if(WIN32)
-
   set(CMAKE_INCLUDE_WIN "${CMAKE_C_COMPILER}")
   set(CMAKE_LIB_WIN "${CMAKE_C_COMPILER}")
   string(REGEX REPLACE "/bin/gcc.*" "/include"  CMAKE_INCLUDE_WIN "${CMAKE_INCLUDE_WIN}")
   string(REGEX REPLACE "/bin/gcc.*" "/lib"  CMAKE_LIB_WIN "${CMAKE_LIB_WIN}")
   set(INCLUDES ${INCLUDES} ${CMAKE_INCLUDE_WIN})
   unset(CMAKE_INCLUDE_WIN)
-
 endif()
 
 include_directories(${INCLUDES})
@@ -185,21 +169,26 @@ include_directories(${INCLUDES})
 include(${CMAKE_HOME_DIRECTORY}/tools/cmake/Option.cmake)
 
 ### Determine the assembly flavor that we need today
+set(HAVE_RAW_CONTEXTS 0)
 include(CMakeDetermineSystem)
 IF(CMAKE_SYSTEM_PROCESSOR MATCHES ".86|AMD64|amd64")
   IF(${ARCH_32_BITS})
     message(STATUS "System processor: i686 (${CMAKE_SYSTEM_PROCESSOR}, 32 bits)")
     set(PROCESSOR_i686 1)
+    set(PROCESSOR_x86_64 0)
   ELSE()
     message(STATUS "System processor: x86_64 (${CMAKE_SYSTEM_PROCESSOR}, 64 bits)")
+    set(PROCESSOR_i686 0)
     set(PROCESSOR_x86_64 1)
   ENDIF()
   if (WIN32)
-    message(STATUS "Disable fast raw contextes on Windows.")
+    message(STATUS "Disable fast raw contexts on Windows.")
   else()
     set(HAVE_RAW_CONTEXTS 1)
   endif()
-
+ELSE()
+  set(PROCESSOR_i686 0)
+  set(PROCESSOR_x86_64 0)
 ENDIF()
 
 include(CheckFunctionExists)
@@ -211,7 +200,6 @@ include(CheckSymbolExists)
 
 set(HAVE_GRAPHVIZ 0)
 include(FindGraphviz)
-include(FindLibSigc++)
 
 set(HAVE_LUA 0)
 if(enable_lua)
@@ -239,36 +227,60 @@ else()
   else()
     message(FATAL_ERROR "Failed to find Boost libraries."
                         "Did you install libboost-dev and libboost-context-dev?"
-                        "(libboost-context-dev is optional)")
+                        "(libboost-context-dev is optional)"
+                        "SimGrid requires Boost >= 1.48.0")
   endif()
 endif()
 
-# Try again to see if we have libboost-context
-find_package(Boost 1.42 COMPONENTS context)
-set(Boost_FOUND 1) # We don't care of whether this component is missing
+#Boost context 1.61 will break compatibility with our implementation.
+#Warn users about that
+find_package(Boost 1.61 COMPONENTS context)
 
 if(Boost_FOUND AND Boost_CONTEXT_FOUND)
-  # We should use feature detection for this instead:
-  if (Boost_VERSION LESS 105600)
-    message("Found Boost.Context API v1")
-    set(HAVE_BOOST_CONTEXTS 1)
+  message("WARNING : our implementation of Boost context factory is not compatible with Boost >=1.61 yet.")
+
+  set(Boost_FOUND 1)
+  set(HAVE_BOOST_CONTEXTS 0)
+else()
+# Try again to see if we have libboost-context
+  find_package(Boost 1.42 COMPONENTS context)
+  set(Boost_FOUND 1) # We don't care of whether this component is missing
+
+  if(Boost_FOUND AND Boost_CONTEXT_FOUND)
+    # We should use feature detection for this instead:
+    if (Boost_VERSION LESS 105600)
+      message("Found Boost.Context API v1")
+      set(HAVE_BOOST_CONTEXTS 1)
+    else()
+      message("Found Boost.Context API v2")
+      set(HAVE_BOOST_CONTEXTS 2)
+    endif()
   else()
-    message("Found Boost.Context API v2")
-    set(HAVE_BOOST_CONTEXTS 2)
+    message ("   boost        : found.")
+    message ("   boost-context: missing. Install libboost-context-dev for this optional feature.")
+    set(HAVE_BOOST_CONTEXTS 0)
   endif()
-else()
-  message ("   boost        : found.")
-  message ("   boost-context: missing. Install libboost-context-dev for this optional feature.")
-  set(HAVE_BOOST_CONTEXTS 0)
 endif()
 
+# Try again to see if we have libboost-graph
+#find_package(Boost 1.42 COMPONENTS graph)
+#set(Boost_FOUND 1) # We don't care of whether this component is missing
+#
+#if(Boost_FOUND AND Boost_GRAPH_FOUND)
+#  set(HAVE_BOOST_GRAPH 1)
+#else()
+#  message ("   boost        : found.")
+#  message ("   boost-graph  : missing. Install libboost-graph-dev for this optional feature.")
+#  set(HAVE_BOOST_GRAPH 0)
+#endif()
+
 # Checks for header libraries functions.
-CHECK_LIBRARY_EXISTS(execinfo backtrace              "" HAVE_BACKTRACE_IN_LIBEXECINFO)
 CHECK_LIBRARY_EXISTS(rt      clock_gettime           "" HAVE_POSIX_GETTIME)
 
 CHECK_LIBRARY_EXISTS(pthread pthread_create          "" HAVE_PTHREAD)
 CHECK_LIBRARY_EXISTS(pthread sem_init                "" HAVE_SEM_INIT_LIB)
 CHECK_LIBRARY_EXISTS(pthread sem_open                "" HAVE_SEM_OPEN_LIB)
+set(HAVE_PTHREAD_SETAFFINITY 0)
 CHECK_LIBRARY_EXISTS(pthread pthread_setaffinity_np  "" HAVE_PTHREAD_SETAFFINITY)
 
 if(CMAKE_SYSTEM_NAME MATCHES "Darwin")
@@ -281,7 +293,7 @@ else()
   set(CMAKE_REQUIRED_DEFINITIONS "-D_GNU_SOURCE")
 endif()
 
-CHECK_INCLUDE_FILE("valgrind/valgrind.h" HAVE_VALGRIND_VALGRIND_H)
+CHECK_INCLUDE_FILE("valgrind/valgrind.h" HAVE_VALGRIND_H)
 CHECK_INCLUDE_FILE("unistd.h" HAVE_UNISTD_H)
 CHECK_INCLUDE_FILE("execinfo.h" HAVE_EXECINFO_H)
 CHECK_INCLUDE_FILE("signal.h" HAVE_SIGNAL_H)
@@ -290,6 +302,7 @@ CHECK_INCLUDE_FILE("sys/sysctl.h" HAVE_SYS_SYSCTL_H)
 CHECK_INCLUDE_FILE("ucontext.h" HAVE_UCONTEXT_H)
 CHECK_INCLUDE_FILE("linux/futex.h" HAVE_FUTEX_H)
 
+CHECK_FUNCTION_EXISTS(backtrace HAVE_BACKTRACE)
 CHECK_FUNCTION_EXISTS(gettimeofday HAVE_GETTIMEOFDAY)
 CHECK_FUNCTION_EXISTS(nanosleep HAVE_NANOSLEEP)
 CHECK_FUNCTION_EXISTS(getdtablesize HAVE_GETDTABLESIZE)
@@ -299,21 +312,19 @@ CHECK_FUNCTION_EXISTS(process_vm_readv HAVE_PROCESS_VM_READV)
 CHECK_FUNCTION_EXISTS(mmap HAVE_MMAP)
 
 CHECK_SYMBOL_EXISTS(vasprintf stdio.h HAVE_VASPRINTF)
-if(MINGW) 
+if(MINGW)
   # The detection of vasprintf fails on MinGW, assumingly because it's
   # defined as an inline function in stdio.h instead of a regular
   # function. So force the result to be 1 despite of the test.
   set(HAVE_VASPRINTF 1)
 endif()
 
-
 #Check if __thread is defined
 execute_process(
-  COMMAND "${CMAKE_C_COMPILER} ${CMAKE_HOME_DIRECTORY}/tools/cmake/test_prog/prog_thread_storage.c"
+  COMMAND "${CMAKE_C_COMPILER} ${CMAKE_HOME_DIRECTORY}/tools/cmake/test_prog/prog_thread_storage.c -o testprog"
   WORKING_DIRECTORY ${CMAKE_BINARY_DIR}
-  RESULT_VARIABLE HAVE_thread_storage_run
-  )
-
+  RESULT_VARIABLE HAVE_thread_storage_run)
+file(REMOVE testprog)
 if(HAVE_thread_storage_run)
   set(HAVE_THREAD_LOCAL_STORAGE 1)
 else()
@@ -338,26 +349,26 @@ endif()
 
 if(enable_jedule)
   set(HAVE_JEDULE 1)
+else()
+  set(HAVE_JEDULE 0)
 endif()
 
 if(enable_mallocators)
-  SET(MALLOCATOR_IS_WANTED 1)
+  SET(HAVE_MALLOCATOR 1)
 else()
-  SET(MALLOCATOR_IS_WANTED 0)
+  SET(HAVE_MALLOCATOR 0)
 endif()
 
 if(enable_model-checking AND HAVE_MMALLOC)
   SET(HAVE_MC 1)
-  SET(MMALLOC_WANT_OVERRIDE_LEGACY 1)
   include(FindLibunwind)
   include(FindLibdw)
 else()
   if(enable_model-checking)
-    message(STATUS "Warning: support for model-checking has been disabled because HAVE_MMALLOC is false")
+    message(STATUS "Warning: support for model-checking has been disabled because you are missing either mmap or __thread.")
   endif()
   SET(HAVE_MC 0)
   SET(HAVE_MMALLOC 0)
-  SET(MMALLOC_WANT_OVERRIDE_LEGACY 0)
 endif()
 
 if(enable_smpi)
@@ -373,54 +384,53 @@ if(enable_smpi)
     message (STATUS "Warning:  no support for SMPI automatic privatization on this platform")
     SET(HAVE_PRIVATIZATION 0)
   endif()
+else()
+  SET(HAVE_SMPI 0)
 endif()
 
 #--------------------------------------------------------------------------------------------------
 ### Check for GNU dynamic linker
 CHECK_INCLUDE_FILE("dlfcn.h" HAVE_DLFCN_H)
 if (HAVE_DLFCN_H)
-    execute_process(COMMAND ${CMAKE_C_COMPILER} ${CMAKE_HOME_DIRECTORY}/tools/cmake/test_prog/prog_gnu_dynlinker.c -ldl -o test_gnu_ld
-      WORKING_DIRECTORY ${CMAKE_BINARY_DIR}
-      OUTPUT_VARIABLE HAVE_GNU_LD_compil
-    )
-    if(HAVE_GNU_LD_compil)
-      set(HAVE_GNU_LD 0)
-      message(STATUS "Warning: test program toward GNU ld failed to compile:")
-      message(STATUS "${HAVE_GNU_LD_comp_output}")
+  execute_process(COMMAND ${CMAKE_C_COMPILER} ${CMAKE_HOME_DIRECTORY}/tools/cmake/test_prog/prog_gnu_dynlinker.c -ldl -o test_gnu_ld
+                  WORKING_DIRECTORY ${CMAKE_BINARY_DIR}
+                  OUTPUT_VARIABLE HAVE_GNU_LD_compil
+  )
+  if(HAVE_GNU_LD_compil)
+    set(HAVE_GNU_LD 0)
+    message(STATUS "Warning: test program toward GNU ld failed to compile:")
+    message(STATUS "${HAVE_GNU_LD_comp_output}")
+  else()
+    execute_process(COMMAND ./test_gnu_ld
+                    WORKING_DIRECTORY ${CMAKE_BINARY_DIR}
+                    RESULT_VARIABLE HAVE_GNU_LD_run
+                    OUTPUT_VARIABLE var_exec
+                   )
+
+    if(NOT HAVE_GNU_LD_run)
+      set(HAVE_GNU_LD 1)
+      message(STATUS "We are using GNU dynamic linker")
     else()
-
-      execute_process(COMMAND ./test_gnu_ld
-          WORKING_DIRECTORY ${CMAKE_BINARY_DIR}
-          RESULT_VARIABLE HAVE_GNU_LD_run
-          OUTPUT_VARIABLE var_exec
-      )
-
-      if(NOT HAVE_GNU_LD_run)
-        set(HAVE_GNU_LD 1)
-        message(STATUS "We are using GNU dynamic linker")
-      else()
-        set(HAVE_GNU_LD 0)
-        message(STATUS "Warning: error while checking for GNU ld:")
-        message(STATUS "Test output: '${var_exec}'")
-        message(STATUS "Exit status: ${HAVE_GNU_LD_run}")
-      endif()
-      file(REMOVE test_gnu_ld)
+      set(HAVE_GNU_LD 0)
+      message(STATUS "Warning: error while checking for GNU ld:")
+      message(STATUS "Test output: '${var_exec}'")
+      message(STATUS "Exit status: ${HAVE_GNU_LD_run}")
     endif()
+    file(REMOVE test_gnu_ld)
+  endif()
 endif()
 
-
 #--------------------------------------------------------------------------------------------------
 ### Initialize of CONTEXT THREADS
 
 set(HAVE_THREAD_CONTEXTS 0)
-
 if(HAVE_PTHREAD)
   ### Test that we have a way to create semaphores
 
   if(HAVE_SEM_OPEN_LIB)
     execute_process(COMMAND ${CMAKE_C_COMPILER} ${CMAKE_HOME_DIRECTORY}/tools/cmake/test_prog/prog_sem_open.c -lpthread -o sem_open
-    WORKING_DIRECTORY ${CMAKE_BINARY_DIR}
-    OUTPUT_VARIABLE HAVE_SEM_OPEN_compil
+      WORKING_DIRECTORY ${CMAKE_BINARY_DIR}
+      OUTPUT_VARIABLE HAVE_SEM_OPEN_compil
     )
 
     # Test sem_open by compiling:
@@ -436,9 +446,9 @@ if(HAVE_PTHREAD)
     # If we're not crosscompiling, we check by executing the program:
     if (HAVE_SEM_OPEN AND NOT CMAKE_CROSSCOMPILING)
       execute_process(COMMAND ./sem_open
-      WORKING_DIRECTORY ${CMAKE_BINARY_DIR}
-      RESULT_VARIABLE HAVE_SEM_OPEN_run
-      OUTPUT_VARIABLE var_compil
+        WORKING_DIRECTORY ${CMAKE_BINARY_DIR}
+        RESULT_VARIABLE HAVE_SEM_OPEN_run
+        OUTPUT_VARIABLE var_compil
       )
       if (NOT HAVE_SEM_OPEN_run)
         set(HAVE_SEM_OPEN 1)
@@ -456,15 +466,15 @@ if(HAVE_PTHREAD)
       endif()
     endif()
     file(REMOVE sem_open)
-
   else()
     set(HAVE_SEM_OPEN 0)
   endif()
 
   if(HAVE_SEM_INIT_LIB)
     execute_process(COMMAND ${CMAKE_C_COMPILER} ${CMAKE_HOME_DIRECTORY}/tools/cmake/test_prog/prog_sem_init.c -lpthread -o sem_init
-    WORKING_DIRECTORY ${CMAKE_BINARY_DIR}
-    RESULT_VARIABLE HAVE_SEM_INIT_run OUTPUT_VARIABLE HAVE_SEM_INIT_compil)
+      WORKING_DIRECTORY ${CMAKE_BINARY_DIR}
+      RESULT_VARIABLE HAVE_SEM_INIT_run 
+      OUTPUT_VARIABLE HAVE_SEM_INIT_compil)
 
     # Test sem_init by compiling:
     if(HAVE_SEM_INIT_compil)
@@ -479,9 +489,9 @@ if(HAVE_PTHREAD)
     # If we're not crosscompiling, we check by executing the program:
     if (HAVE_SEM_INIT AND NOT CMAKE_CROSSCOMPILING)
       execute_process(COMMAND ./sem_init
-      WORKING_DIRECTORY ${CMAKE_BINARY_DIR}
-      RESULT_VARIABLE HAVE_SEM_INIT_run
-      OUTPUT_VARIABLE var_compil
+        WORKING_DIRECTORY ${CMAKE_BINARY_DIR}
+        RESULT_VARIABLE HAVE_SEM_INIT_run
+        OUTPUT_VARIABLE var_compil
       )
       if (NOT HAVE_SEM_INIT_run)
         set(HAVE_SEM_INIT 1)
@@ -509,7 +519,6 @@ if(HAVE_PTHREAD)
   message("-- Support for thread context factory ok.")
 endif()
 
-
 set(HAVE_UCONTEXT_CONTEXTS 0)
 if(NOT HAVE_UCONTEXT_H)
   message("-- No ucontext factory: <ucontext.h> not found.")
@@ -519,7 +528,7 @@ elseif(APPLE)
 else()
   try_compile(compile_makecontext ${CMAKE_BINARY_DIR} ${CMAKE_HOME_DIRECTORY}/tools/cmake/test_prog/prog_makecontext.c
     OUTPUT_VARIABLE compile_makecontext_output)
-  
+
   #If can have both context
   if(compile_makecontext)
     set(HAVE_UCONTEXT_CONTEXTS 1)
@@ -566,7 +575,7 @@ else()
   endif()
 endif()
 # If the test ran well, remove the test binary
-execute_process(COMMAND ${CMAKE_COMMAND} -E remove test_stackgrowth)
+file(REMOVE test_stackgrowth)
 #--------------------------------------------------------------------------------------------------
 
 ### check for addr2line
@@ -579,65 +588,72 @@ endif()
 ## GIT version check
 ##
 if(EXISTS ${CMAKE_HOME_DIRECTORY}/.git/)
-  execute_process(COMMAND git remote
-  COMMAND head -n 1
-  WORKING_DIRECTORY ${CMAKE_HOME_DIRECTORY}/.git/
-  OUTPUT_VARIABLE remote
-  RESULT_VARIABLE ret
-  )
-  string(REPLACE "\n" "" remote "${remote}")
+  execute_process(
+     COMMAND git remote
+     COMMAND head -n 1
+     WORKING_DIRECTORY ${CMAKE_HOME_DIRECTORY}/.git/
+     OUTPUT_VARIABLE remote
+     OUTPUT_STRIP_TRAILING_WHITESPACE)
   #message(STATUS "Git remote: ${remote}")
   execute_process(COMMAND git config --get remote.${remote}.url
-  WORKING_DIRECTORY ${CMAKE_HOME_DIRECTORY}/.git/
-  OUTPUT_VARIABLE url
-  RESULT_VARIABLE ret
-  )
-  string(REPLACE "\n" "" url "${url}")
+     WORKING_DIRECTORY ${CMAKE_HOME_DIRECTORY}/.git/
+     OUTPUT_VARIABLE url
+     OUTPUT_STRIP_TRAILING_WHITESPACE)
   #message(STATUS "Git url: ${url}")
   if(url)
     execute_process(COMMAND git --git-dir=${CMAKE_HOME_DIRECTORY}/.git log --pretty=oneline --abbrev-commit -1
-    WORKING_DIRECTORY ${CMAKE_HOME_DIRECTORY}/.git/
-    OUTPUT_VARIABLE GIT_VERSION
-    RESULT_VARIABLE ret
-    )
-    string(REPLACE "\n" "" GIT_VERSION "${GIT_VERSION}")
+       WORKING_DIRECTORY ${CMAKE_HOME_DIRECTORY}/.git/
+       OUTPUT_VARIABLE GIT_VERSION
+       OUTPUT_STRIP_TRAILING_WHITESPACE)
     message(STATUS "Git version: ${GIT_VERSION}")
+
     execute_process(COMMAND git --git-dir=${CMAKE_HOME_DIRECTORY}/.git log -n 1 --pretty=format:%ai .
-    WORKING_DIRECTORY ${CMAKE_HOME_DIRECTORY}/.git/
-    OUTPUT_VARIABLE GIT_DATE
-    RESULT_VARIABLE ret
-    )
-    string(REPLACE "\n" "" GIT_DATE "${GIT_DATE}")
+       WORKING_DIRECTORY ${CMAKE_HOME_DIRECTORY}/.git/
+       OUTPUT_VARIABLE GIT_DATE 
+       OUTPUT_STRIP_TRAILING_WHITESPACE)
     message(STATUS "Git date: ${GIT_DATE}")
     string(REGEX REPLACE " .*" "" GIT_VERSION "${GIT_VERSION}")
-    
+
     execute_process(COMMAND git --git-dir=${CMAKE_HOME_DIRECTORY}/.git log --pretty=format:%H -1
-                    WORKING_DIRECTORY ${CMAKE_HOME_DIRECTORY}/.git/
-		    OUTPUT_VARIABLE SIMGRID_GITHASH
-		    RESULT_VARIABLE ret
-		    )
-    string(REPLACE "\n" "" SIMGRID_GITHASH "${SIMGRID_GITHASH}")
-		    
+       WORKING_DIRECTORY ${CMAKE_HOME_DIRECTORY}/.git/
+       OUTPUT_VARIABLE SIMGRID_GITHASH
+       OUTPUT_STRIP_TRAILING_WHITESPACE)
   endif()
 elseif(EXISTS ${CMAKE_HOME_DIRECTORY}/.gitversion)
   FILE(STRINGS ${CMAKE_HOME_DIRECTORY}/.gitversion GIT_VERSION)
 endif()
 
-if(GIT_VERSION)
-  set(SIMGRID_VERSION_BANNER "${SIMGRID_VERSION_BANNER} at commit ${GIT_VERSION}")
-endif()
-if(GIT_DATE)
-  set(SIMGRID_VERSION_BANNER "${SIMGRID_VERSION_BANNER} (${GIT_DATE})")
-endif()
-
 ### Generate the required headers and scripts
 #############################################
-configure_file("${CMAKE_HOME_DIRECTORY}/tools/cmake/src/internal_config.h.in" "${CMAKE_BINARY_DIR}/src/internal_config.h"    @ONLY IMMEDIATE)
-configure_file("${CMAKE_HOME_DIRECTORY}/include/simgrid_config.h.in"          "${CMAKE_BINARY_DIR}/include/simgrid_config.h" @ONLY IMMEDIATE)
+
+# gcc makes no difference between "#define HAVE_FOOBAR" and "#define HAVE_FOOBAR 0" by default, 
+# but this too error prone. If you forget to include the config.h, you get weird segfaults.
+# If you include it everywhere, everything gets recompiled everytime.
+# So we include only where needed, and compile with -Wundef to notice the missing includes.
+# But cmake sometimes defines to the empty definition (#define HAVE_VALGRIND_H).
+# So we have to make sure that everything got a decent value before generating the files.
+foreach(var HAVE_BACKTRACE HAVE_EXECINFO_H HAVE_FUTEX_H HAVE_GETDTABLESIZE HAVE_GETTIMEOFDAY HAVE_MMAP HAVE_NANOSLEEP HAVE_POPEN
+            HAVE_POSIX_GETTIME HAVE_PROCESS_VM_READV HAVE_SIGNAL_H HAVE_SYS_PARAM_H HAVE_SYS_SYSCTL_H HAVE_SYSCONF 
+            HAVE_UCONTEXT_H HAVE_UNISTD_H HAVE_VALGRIND_H HAVE_VASPRINTF)
+  if(${var})
+    set(${var} 1)
+  else()
+    set(${var} 0)
+  endif()
+endforeach()
+
+# Avoid triggering a (full) rebuild by touching the files if they did not really change
+configure_file("${CMAKE_HOME_DIRECTORY}/tools/cmake/src/internal_config.h.in" "${CMAKE_BINARY_DIR}/src/internal_config.h.generated"    @ONLY IMMEDIATE)
+configure_file("${CMAKE_HOME_DIRECTORY}/include/simgrid_config.h.in"          "${CMAKE_BINARY_DIR}/include/simgrid_config.h.generated" @ONLY IMMEDIATE)
+execute_process(COMMAND ${CMAKE_COMMAND} -E copy_if_different ${CMAKE_BINARY_DIR}/src/internal_config.h.generated ${CMAKE_BINARY_DIR}/src/internal_config.h)
+execute_process(COMMAND ${CMAKE_COMMAND} -E copy_if_different ${CMAKE_BINARY_DIR}/include/simgrid_config.h.generated ${CMAKE_BINARY_DIR}/include/simgrid_config.h)
+file(REMOVE ${CMAKE_BINARY_DIR}/src/internal_config.h.generated)
+file(REMOVE ${CMAKE_BINARY_DIR}/include/simgrid_config.h.generated)
 
 # We need two versions of the SMPI scripts because they contain the path to the library
 # so, it depends of whether SimGrid is installed, or run from the sources (during the build)
-file(READ ${CMAKE_HOME_DIRECTORY}/src/smpi/smpitools.sh SMPITOOLS_SH) # Definitions shared amongst all scripts, inlined in each of them
+
+file(READ ${CMAKE_HOME_DIRECTORY}/src/smpi/smpitools.sh SMPITOOLS_SH) # Definitions shared amongst all SMPI scripts, inlined in each of them
 
 ### SMPI script used when simgrid is installed
 set(exec_prefix ${CMAKE_INSTALL_PREFIX})
@@ -683,9 +699,7 @@ set(generated_headers_to_install
   ${CMAKE_CURRENT_BINARY_DIR}/include/simgrid_config.h
   )
 
-set(generated_headers
-  ${CMAKE_CURRENT_BINARY_DIR}/src/internal_config.h
-  )
+set(generated_headers  ${CMAKE_CURRENT_BINARY_DIR}/src/internal_config.h )
 
 set(generated_files_to_clean
   ${generated_headers}
@@ -714,7 +728,7 @@ if(NOT "${CMAKE_BINARY_DIR}" STREQUAL "${CMAKE_HOME_DIRECTORY}")
   configure_file(${CMAKE_HOME_DIRECTORY}/examples/smpi/replay/actions_gather.txt ${CMAKE_BINARY_DIR}/examples/smpi/replay/actions_gather.txt COPYONLY)
   configure_file(${CMAKE_HOME_DIRECTORY}/examples/smpi/replay/actions_allgatherv.txt ${CMAKE_BINARY_DIR}/examples/smpi/replay/actions_allgatherv.txt COPYONLY)
   configure_file(${CMAKE_HOME_DIRECTORY}/teshsuite/smpi/hostfile ${CMAKE_BINARY_DIR}/teshsuite/smpi/hostfile COPYONLY)
-  
+
   configure_file(${CMAKE_HOME_DIRECTORY}/examples/smpi/replay_multiple/description_file ${CMAKE_BINARY_DIR}/examples/smpi/replay_multiple/description_file COPYONLY)
   configure_file(${CMAKE_HOME_DIRECTORY}/examples/smpi/replay_multiple/README ${CMAKE_BINARY_DIR}/examples/smpi/replay_multiple/README COPYONLY)
   configure_file(${CMAKE_HOME_DIRECTORY}/examples/smpi/replay_multiple/smpi_replay.txt ${CMAKE_BINARY_DIR}/examples/smpi/replay_multiple/smpi_replay.txt COPYONLY)
@@ -869,12 +883,22 @@ endif()
 message("")
 message("##########################################")
 message("#### Content of src/internal_config.h ####")
+message("##########################################")
 file(STRINGS ${CMAKE_CURRENT_BINARY_DIR}/src/internal_config.h config_output)
-LIST(REMOVE_AT config_output 0 1 2 3 4 5 6 7 8) # Pass the file header
+LIST(REMOVE_AT config_output 0 1 2 3 4 5 6 7 8 9 10) # Pass the file header
 foreach(line ${config_output})
   message("   ${line}")
 endforeach()
-message("####   end of src/internal_config.h   ####")
+message("##########################################")
+message("####   Content of simgrid_config.h    ####")
+message("##########################################")
+file(STRINGS ${CMAKE_CURRENT_BINARY_DIR}/include/simgrid_config.h config_output)
+LIST(REMOVE_AT config_output 0 1 2 3 4 5 6 7 8 9 -1) # Pass the file header
+foreach(line ${config_output})
+  message("   ${line}")
+endforeach()
+message("##########################################")
+message("####   End of configuration headers   ####")
 message("##########################################")
 
 message("\nConfiguration of package `simgrid':")
@@ -941,13 +965,12 @@ message("        Documentation................: ${enable_documentation}")
 message("        Model checking ..............: ${HAVE_MC}")
 message("        Jedule  mode ................: ${HAVE_JEDULE}")
 message("        Graphviz mode ...............: ${HAVE_GRAPHVIZ}")
-message("        Sigc++ mode .................: ${SIMGRID_HAVE_LIBSIG}")
 message("        Mallocators .................: ${enable_mallocators}")
 message("")
 message("        Simgrid dependencies ........: ${SIMGRID_DEP}")
 message("")
 
-exec_program("${CMAKE_COMMAND} -E make_directory ${PROJECT_BINARY_DIR}/Testing/Notes/" OUTPUT_VARIABLE OKIDOKI)
+execute_process(COMMAND ${CMAKE_COMMAND} -E make_directory ${PROJECT_BINARY_DIR}/Testing/Notes/)
 file(WRITE ${PROJECT_BINARY_DIR}/Testing/Notes/Build  "GIT version : ${GIT_VERSION}\n")
 file(APPEND ${PROJECT_BINARY_DIR}/Testing/Notes/Build "Release     : simgrid-${release_version}\n")