Add a script in Scripts/developers_scripts thatcheck if there are differencies in the dependencies of packages

Installation/CMakeLists.txt

@@ -1049,6 +1049,12 @@ Note that this option will modify the source directory!"
     ${CGAL_ENABLE_CHECK_HEADERS})
 
   if(CGAL_ENABLE_CHECK_HEADERS OR CGAL_COMPUTE_DEPENDENCIES)
+
+    option(CGAL_COPY_DEPENDENCIES
+      "Copy package dependencies in source directories.
+  Note that this option will modify the source directory!"
+      FALSE)
+
     if(NOT CMAKE_MAJOR_VERSION GREATER 2)
       message(FATAL_ERROR "Your version of CMake is too old.
 You must disable CGAL_ENABLE_CHECK_HEADERS and CGAL_COMPUTE_DEPENDENCIES.")
@@ -1302,6 +1308,8 @@ ${CMAKE_CURRENT_SOURCE_DIR}/../${package}/include/${header}"
           COMMENT "Compute dependencies of ${package}"
           COMMAND ${CMAKE_COMMAND}
             -DCGAL_PACKAGES_PREFIX=${CGAL_SOURCE_DIR}
+            -DCGAL_COPY_DEPENDENCIES=${CGAL_COPY_DEPENDENCIES}
+            -DCGAL_COPY_PATH=${CGAL_SOURCE_DIR}/${package}/dependencies
             -DOUTPUT_HEADERS_LIST=${CGAL_BINARY_DIR}/package_info/${package}/included_headers
             -DOUTPUT_PACKAGES_LIST=${CGAL_BINARY_DIR}/package_info/${package}/dependencies
             -P "${CGAL_MODULES_DIR}/process_dependencies.cmake"
@@ -1327,7 +1335,6 @@ ${CMAKE_CURRENT_SOURCE_DIR}/../${package}/include/${header}"
     - package_info/<package>/check_headers/ (error messages from \
 the headers checks)\n")
     message( "== Setting header checking (DONE) ==\n" )
-
   endif()
 endif( CGAL_BRANCH_BUILD )
 

Installation/cmake/modules/process_dependencies.cmake

@@ -1,4 +1,4 @@
-foreach(n RANGE 5 ${CMAKE_ARGC})
+foreach(n RANGE 7 ${CMAKE_ARGC})
   list(APPEND INPUT_FILES ${CMAKE_ARGV${n}})
 endforeach()
 
@@ -43,7 +43,15 @@ if(OUTPUT_HEADERS_LIST)
 endif()
 if(OUTPUT_PACKAGES_LIST)
   file(WRITE ${OUTPUT_PACKAGES_LIST} "")
+  if (CGAL_COPY_DEPENDENCIES)
+    file(WRITE ${CGAL_COPY_PATH} "")
+  endif()
   foreach(pkg ${pkgs})
-    file(APPEND ${OUTPUT_PACKAGES_LIST} "${pkg}\n")
+    file(APPEND ${CGAL_COPY_PATH} "${pkg}\n")
+    if (CGAL_COPY_DEPENDENCIES)
+      file(APPEND package_path/dependencies "${pkg}\n")
+    endif()
   endforeach()
 endif()
+
+

Scripts/developer_scripts/cgal_check_dependencies.sh

@@ -0,0 +1,51 @@
+#This script must be called from the CGAL root.
+
+while test $# -gt 0
+do
+    case "$1" in
+        --help) echo "Usage: $0 <doxygen_exe_path> "
+        echo " $0 must be called from the CGAL root directory. It will compile documentation for all packages using doxygen_exe_path, and deduce "
+        echo "their dependencies. It will then compare them with the previous ones and output 1if the dependencies has changed, "
+        echo "0 otherwise."
+        exit 0
+            ;;
+        --*) echo "bad option $1"
+            ;;
+        *) DOX_PATH="$1"
+            ;;
+    esac
+    shift
+done
+
+CGAL_ROOT=$PWD
+mkdir -p dep_check_build && cd dep_check_build
+for pkg in ../*
+do
+  if [ -f $pkg/dependencies ]; then
+    echo "$pkg"
+    mv $pkg/dependencies $pkg/dependencies.old
+  fi
+done
+
+cmake -DCGAL_ENABLE_CHECK_HEADERS=TRUE -DDOXYGEN_EXECUTABLE="$DOX_PATH" -DCGAL_COPY_DEPENDENCIES=TRUE ..
+make -j$(nproc --all) packages_dependencies
+for pkg in ../*
+do
+  if [ -f $pkg/dependencies ]; then
+    PKG_DIFF=$(diff -N -w  $pkg/dependencies $pkg/dependencies.old)
+    if [ -n "$PKG_DIFF" ]; then
+      HAS_DIFF=TRUE
+      echo "Differences in $pkg: $PKG_DIFF"
+      fi
+    rm $pkg/dependencies.old
+  fi
+done
+cd $CGAL_ROOT
+rm -r dep_check_build
+if [ -n "$HAS_DIFF" ]; then
+  echo " You should run cmake with option CGAL_CHECK_HEADERS ON, make the target packages_dependencies and commit the new dependencies files."
+  exit 1
+else
+  echo "The dependencies are up to date."
+  exit 0
+fi