make MGIS CPM friendly

CMakeLists.txt

@@ -229,7 +229,7 @@ endif(enable-doxygen-doc OR enable-website)
 
 # add a target to generate API documentation with Doxygen
 if(enable-doxygen-doc)
-  file(MAKE_DIRECTORY ${CMAKE_BINARY_DIR}/docs)
+  file(MAKE_DIRECTORY ${PROJECT_BINARY_DIR}/docs)
   find_package(Doxygen)
   if(DOXYGEN_FOUND)
     configure_file(${CMAKE_CURRENT_SOURCE_DIR}/Doxyfile.in
@@ -296,7 +296,7 @@ add_subdirectory(bindings)
 if(MFrontGenericInterfaceSupportDevelopmentVersion)
   set(CPACK_PACKAGE_VERSION_PATCH "${CMAKE_PROJECT_VERSION_PATCH}-dev")
 endif()
-set(CPACK_RESOURCE_FILE_LICENSE "${CMAKE_SOURCE_DIR}/LGPL-3.0.txt")
+set(CPACK_RESOURCE_FILE_LICENSE "${PROJECT_SOURCE_DIR}/LGPL-3.0.txt")
 set(CPACK_VERBATIM_VARIABLES YES)
 if(NOT CPACK_SOURCE_GENERATOR)
   set(CPACK_SOURCE_GENERATOR "TGZ")

Doxyfile.in

@@ -58,7 +58,7 @@ PROJECT_LOGO           =
 # entered, it will be relative to the location where doxygen was started. If
 # left blank the current directory will be used.
 
-OUTPUT_DIRECTORY       = @CMAKE_BINARY_DIR@/docs/doxygen
+OUTPUT_DIRECTORY       = @PROJECT_BINARY_DIR@/docs/doxygen
 
 # If the CREATE_SUBDIRS tag is set to YES then doxygen will create 4096 sub-
 # directories (in 2 levels) under the output directory of each output format and

bindings/fortran/src/CMakeLists.txt

@@ -4,7 +4,7 @@ mgis_library(MFrontGenericInterface-fortran
   mgis_behaviour.f95
   mgis_model.f95)
 set_target_properties(MFrontGenericInterface-fortran
-  PROPERTIES Fortran_MODULE_DIRECTORY "${CMAKE_BINARY_DIR}/bindings/fortran/modules")
+  PROPERTIES Fortran_MODULE_DIRECTORY "${PROJECT_BINARY_DIR}/bindings/fortran/modules")
 target_include_directories(MFrontGenericInterface-fortran
 	PRIVATE "${PROJECT_SOURCE_DIR}/include"
 	PRIVATE "${PROJECT_SOURCE_DIR}/bindings/c/include")

bindings/fortran/tests/CMakeLists.txt

@@ -6,15 +6,15 @@ add_library(MFrontGenericInterfaceFortranUnitTestingUtilities
   mgis_testing_utilities.f95
   mgis_testing_utilities.c)
 target_include_directories(MFrontGenericInterfaceFortranUnitTestingUtilities
- PRIVATE "${CMAKE_BINARY_DIR}/bindings/fortran/modules")
+ PRIVATE "${PROJECT_BINARY_DIR}/bindings/fortran/modules")
 target_link_libraries(MFrontGenericInterfaceFortranUnitTestingUtilities
    PRIVATE MFrontGenericInterface-fortran)
 
 function(test_fortran_bindings test)
   add_executable(${test}_f
     EXCLUDE_FROM_ALL ${test}.f95)
   target_include_directories(${test}_f
-    PRIVATE "${CMAKE_BINARY_DIR}/bindings/fortran/modules")
+    PRIVATE "${PROJECT_BINARY_DIR}/bindings/fortran/modules")
   target_link_libraries(${test}_f
     PRIVATE MFrontGenericInterface-fortran MFrontGenericInterfaceFortranUnitTestingUtilities)
   if(CMAKE_CONFIGURATION_TYPES)