Merge branch 'master' of scm.gforge.inria.fr:/gitroot/simgrid/simgrid

[simgrid.git] / CMakeLists.txt

diff --git a/CMakeLists.txt b/CMakeLists.txt
index b0f52fe..9b3995b 100644 (file)
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -281,7 +281,7 @@ 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)
@@ -630,12 +630,18 @@ 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)
+# 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)
+exec_program("${CMAKE_COMMAND} -E copy_if_different ${CMAKE_BINARY_DIR}/src/internal_config.h.generated ${CMAKE_BINARY_DIR}/src/internal_config.h")
+exec_program("${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})