remove WITH_XXX cache options

Installation/CMakeLists.txt

@@ -526,7 +526,7 @@ message("== Detect external libraries ==")
 #  External libs configured when Qt5 lib of cgal are required
 #  Coin is used in KDS, but no FindCoin or FindCOIN exists
 #  There exists FindIPE, FindMKL, but they are only used to support supporting libs
-list (INSERT CGAL_SUPPORTING_3RD_PARTY_LIBRARIES 0 GMP MPFR ZLIB OpenGL LEDA MPFI RS RS3 OpenNL Eigen3 ESBTL Coin3D NTL IPE)
+list (INSERT CGAL_SUPPORTING_3RD_PARTY_LIBRARIES 0 LEDA )
 
 # Where CMake is run several times, to avoid duplicates
 list(REMOVE_DUPLICATES CGAL_SUPPORTING_3RD_PARTY_LIBRARIES)
@@ -562,13 +562,8 @@ if(CGAL_DISABLE_GMP)
   unset(MPFR_FOUND CACHE)
   unset(WITH_CGAL_Core)
   unset(WITH_CGAL_Core CACHE)
-  unset(WITH_GMP)
-  unset(WITH_GMP CACHE)
   unset(CGAL_USE_GMP)
   unset(CGAL_USE_GMP CACHE)
-  unset(WITH_MPFR)
-  unset(WITH_MPFR CACHE)
-
   # Nasty trick to make sure <gmp.h> is not used when CGAL_DISABLE_GMP is TRUE
   file(WRITE "${CMAKE_BINARY_DIR}/include/gmp.h"
     "#error GMP is disabled by the CMake option CGAL_DISABLE_GMP")

Installation/cmake/modules/CGAL_Macros.cmake

@@ -333,45 +333,6 @@ if( NOT CGAL_MACROS_FILE_INCLUDED )
 
   endmacro()
 
-  macro( use_essential_libs )
-
-    # Comment: This is subject to be changed in the future
-    #          - either more specific (giving precise include_dir- and link-order)
-    #          - or even less specific if order becomes less relevant
-    # Eric Berberich 2012/06/29
-
-    if(NOT CGAL_DISABLE_GMP)
-      if(RS_FOUND)
-        use_component( RS )
-      endif()
-
-      if(MPFI_FOUND)
-        use_component( MPFI )
-      endif()
-
-      if(MPFR_FOUND)
-        use_component( MPFR )
-      endif()
-
-      if (GMPXX_FOUND)
-        use_component( GMPXX )
-      endif()
-
-      if(GMP_FOUND)
-        use_component( GMP )
-      endif()
-    endif(NOT CGAL_DISABLE_GMP)
-
-    if(LEDA_FOUND)
-      use_component( LEDA )
-    endif()
-
-    if(NTL_FOUND)
-      use_component( NTL )
-    endif()
-  endmacro()
-
-
   function( cgal_setup_module_path )
     # Avoid to modify the modules path twice
     if(NOT CGAL_MODULE_PATH_IS_SET)

Installation/lib/cmake/CGAL/CGALConfig.cmake

@@ -35,10 +35,10 @@ if(BRANCH_BUILD)
   foreach(package_dir ${packages_dirs})
     set(inc_dir ${package_dir}/include)
     if(IS_DIRECTORY ${inc_dir}
-	AND IS_DIRECTORY ${package_dir}/package_info)
+  AND IS_DIRECTORY ${package_dir}/package_info)
       list(APPEND CGAL_INCLUDE_DIRS ${inc_dir})
       if(EXISTS ${inc_dir}/CGAL/config.h)
-	set(CGAL_FOUND TRUE)
+  set(CGAL_FOUND TRUE)
       endif()
     endif()
   endforeach()