Initial CMake support

.gitignore

@@ -1,6 +1,7 @@
 sc/
 p4est/
 build-aux/
+build/
 
 .deps/
 .libs/

CMakeLists.txt

@@ -0,0 +1,68 @@
+cmake_minimum_required( VERSION 3.16 )
+project( T8CODE DESCRIPTION "Parallel algorithms and data structures for tree-based AMR with arbitrary element shapes." LANGUAGES C CXX )
+include( CTest )
+
+
+option( T8CODE_BUILD_AS_SHARED_LIBRARY "Whether t8code should be built as a shared or a static library" ON )
+option( T8CODE_BUILD_TESTS "Build t8code's automated tests" ON )
+option( T8CODE_BUILD_TUTORIALS "Build t8code's tutorials" ON )
+option( T8CODE_BUILD_EXAMPLES "Build t8code's examples" ON )
+
+option( T8CODE_ENABLE_MPI "Enable t8code's features which rely on MPI" ON )
+option( T8CODE_ENABLE_VTK "Enable t8code's features which rely on VTK" OFF )
+
+
+if( NOT CMAKE_BUILD_TYPE )
+    set( CMAKE_BUILD_TYPE "Release" )
+endif()
+
+set( CMAKE_C_STANDARD 11 )
+set( CMAKE_C_STANDARD_REQUIRED ON )
+set( CMAKE_C_EXTENSIONS OFF )
+list( APPEND CMAKE_C_FLAGS "-Wall" )
+
+set( CMAKE_CXX_STANDARD 17 )
+set( CMAKE_CXX_STANDARD_REQUIRED ON )
+set( CMAKE_CXX_EXTENSIONS OFF )
+list( APPEND CMAKE_CXX_FLAGS "-Wall" )
+
+
+if( T8CODE_ENABLE_MPI )
+    find_package( MPI COMPONENTS C REQUIRED )
+    if( NOT MPIEXEC_EXECUTABLE )
+        message( FATAL_ERROR "MPIEXEC was not found" )
+    endif()
+    set( SC_ENABLE_MPI ON )
+    set( mpi ON ) # This is very dirty, we should consider fixing this in the p4est repo
+endif()
+
+if( T8CODE_ENABLE_VTK )
+    find_package( VTK REQUIRED )
+endif()
+
+# Override default for this libsc option
+set( BUILD_SHARED_LIBS ON CACHE BOOL "Build libsc as a shared library" )
+
+# Prevent `libsc` and `p4est` from overwriting the default install prefix.
+set(CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT FALSE)
+
+# Rpath options necessary for shared library install to work correctly in user projects.
+set(CMAKE_INSTALL_NAME_DIR ${CMAKE_INSTALL_PREFIX}/lib)
+set(CMAKE_INSTALL_RPATH ${CMAKE_INSTALL_PREFIX}/lib)
+set(CMAKE_INSTALL_RPATH_USE_LINK_PATH true)
+
+add_subdirectory( ${CMAKE_CURRENT_LIST_DIR}/sc )
+add_subdirectory( ${CMAKE_CURRENT_LIST_DIR}/p4est )
+add_subdirectory( ${CMAKE_CURRENT_LIST_DIR}/src )
+
+if ( T8CODE_BUILD_TESTS )
+    add_subdirectory( ${CMAKE_CURRENT_LIST_DIR}/test )
+endif()
+
+if ( T8CODE_BUILD_TUTORIALS )
+    add_subdirectory( ${CMAKE_CURRENT_LIST_DIR}/tutorials )
+endif()
+
+if ( T8CODE_BUILD_EXAMPLES )
+    add_subdirectory( ${CMAKE_CURRENT_LIST_DIR}/example )
+endif()

example/CMakeLists.txt

@@ -0,0 +1,52 @@
+# Conditionally adding new sources to the main T8 target as in the original BS looked wrong...
+add_library( t8example )
+target_sources( t8example PRIVATE common/t8_example_common.cxx common/t8_example_common_functions.cxx )
+target_include_directories( t8example PRIVATE ${CMAKE_CURRENT_LIST_DIR}/.. )
+target_link_libraries( t8example PRIVATE T8 )
+install( TARGETS t8example DESTINATION ${CMAKE_INSTALL_PREFIX}/lib )
+
+function( add_t8_example )
+    set( options "" )
+    set( oneValueArgs "NAME" )  
+    set( multiValueArgs "SOURCES" )
+    cmake_parse_arguments( ADD_T8_EXAMPLE "${options}" "${oneValueArgs}" "${multiValueArgs}" ${ARGN} )
+
+    add_executable( ${ADD_T8_EXAMPLE_NAME} ${ADD_T8_EXAMPLE_SOURCES} )
+    target_link_libraries( ${ADD_T8_EXAMPLE_NAME} PRIVATE T8 t8example SC::SC )
+    target_include_directories( ${ADD_T8_EXAMPLE_NAME} PRIVATE ${CMAKE_CURRENT_LIST_DIR}/.. )
+
+    install( TARGETS ${ADD_T8_EXAMPLE_NAME} DESTINATION ${CMAKE_INSTALL_PREFIX}/example )
+endfunction()
+
+add_t8_example( NAME t8_advection                       SOURCES advect/t8_advection.cxx )
+
+add_t8_example( NAME t8_cmesh_partition                 SOURCES cmesh/t8_cmesh_partition.cxx )
+add_t8_example( NAME t8_cmesh_set_join_by_vertices      SOURCES cmesh/t8_cmesh_set_join_by_vertices.cxx )
+add_t8_example( NAME t8_cmesh_geometry_examples         SOURCES cmesh/t8_cmesh_geometry_examples.cxx )
+add_t8_example( NAME t8_cmesh_create_partitioned        SOURCES cmesh/t8_cmesh_create_partitioned.cxx )
+add_t8_example( NAME t8_cmesh_hypercube_pad             SOURCES cmesh/t8_cmesh_hypercube_pad.cxx )
+
+add_t8_example( NAME t8_face_neighbor                   SOURCES forest/t8_face_neighbor.cxx )
+add_t8_example( NAME t8_test_ghost                      SOURCES forest/t8_test_ghost.cxx )
+add_t8_example( NAME t8_test_face_iterate               SOURCES forest/t8_test_face_iterate.cxx )
+add_t8_example( NAME t8_test_ghost_large_level_diff     SOURCES forest/t8_test_ghost_large_level_diff.cxx )
+
+add_t8_example( NAME t8_example_geometries              SOURCES geometry/t8_example_geometries.cxx )
+
+add_t8_example( NAME t8_cmesh_load_save                 SOURCES IO/cmesh/t8_cmesh_load_save.cxx )
+add_t8_example( NAME t8_read_msh_file                   SOURCES IO/cmesh/gmsh/t8_read_msh_file.cxx )
+add_t8_example( NAME t8_load_and_refine_square_w_hole   SOURCES IO/cmesh/gmsh/t8_load_and_refine_square_w_hole.cxx )
+add_t8_example( NAME t8_write_cmesh_netcdf              SOURCES IO/cmesh/netcdf/t8_write_cmesh_netcdf.cxx )
+add_t8_example( NAME t8_read_tetgen                     SOURCES IO/cmesh/tetgen/t8_read_tetgen_file.cxx )
+add_t8_example( NAME t8_time_tetgen                     SOURCES IO/cmesh/tetgen/t8_time_tetgen_file.cxx )
+add_t8_example( NAME t8_forest_tetgen                   SOURCES IO/cmesh/tetgen/t8_forest_from_tetgen.cxx )
+add_t8_example( NAME t8_read_triangle                   SOURCES IO/cmesh/triangle/t8_read_triangle_file.cxx )
+add_t8_example( NAME t8_cmesh_read_from_vtk             SOURCES IO/cmesh/vtk/t8_cmesh_read_from_vtk.cxx )
+add_t8_example( NAME t8_netcdf_compilation_status       SOURCES IO/forest/netcdf/t8_netcdf_status.c )
+add_t8_example( NAME t8_write_forest_netcdf             SOURCES IO/forest/netcdf/t8_write_forest_netcdf.cxx )
+
+add_t8_example( NAME t8_example_spheres                 SOURCES remove/t8_example_spheres.cxx )
+add_t8_example( NAME t8_example_gauss_blob              SOURCES remove/t8_example_gauss_blob.cxx )
+add_t8_example( NAME t8_example_empty_trees             SOURCES remove/t8_example_empty_trees.cxx )
+
+add_t8_example( NAME t8_version                         SOURCES version/t8_version.cxx )

src/CMakeLists.txt

@@ -0,0 +1,199 @@
+if ( ${T8CODE_BUILD_AS_SHARED_LIBRARY} )
+    add_library( T8 SHARED )
+    set_target_properties( T8 PROPERTIES POSITION_INDEPENDENT_CODE ON )
+else()
+    add_library( T8 STATIC )
+endif()
+
+set_target_properties( T8 PROPERTIES OUTPUT_NAME t8 )
+
+target_compile_definitions( T8 PUBLIC T8_CMAKE_BUILD )
+target_compile_definitions( T8 PUBLIC T8_CC="${CMAKE_C_COMPILER}" )
+target_compile_definitions( T8 PUBLIC T8_CFLAGS="${CMAKE_C_FLAGS}" )
+target_compile_definitions( T8 PUBLIC T8_CPP="${CMAKE_CXX_COMPILER}" )
+target_compile_definitions( T8 PUBLIC T8_CPPFLAGS="${CMAKE_CXX_FLAGS}" )
+target_compile_definitions( T8 PUBLIC T8_LDFLAGS="${CMAKE_SHARED_LINKER_FLAGS}" )
+target_compile_definitions( T8 PUBLIC T8_LIBS="Not available with CMake builds" )
+
+
+find_package( Git REQUIRED )
+execute_process( COMMAND ${GIT_EXECUTABLE} describe --tags 
+                 COMMAND cut -c 2- 
+                 WORKING_DIRECTORY ${CMAKE_CURRENT_LIST_DIR}
+                 OUTPUT_VARIABLE T8CODE_VERSION 
+                 OUTPUT_STRIP_TRAILING_WHITESPACE )
+execute_process( COMMAND echo ${T8CODE_VERSION} 
+                 COMMAND cut -d. -f1 
+                 OUTPUT_VARIABLE T8CODE_VERSION_MAJOR 
+                 OUTPUT_STRIP_TRAILING_WHITESPACE )
+execute_process( COMMAND echo ${T8CODE_VERSION} 
+                 COMMAND cut -d. -f2 
+                 OUTPUT_VARIABLE T8CODE_VERSION_MINOR 
+                 OUTPUT_STRIP_TRAILING_WHITESPACE )
+execute_process( COMMAND echo ${T8CODE_VERSION} 
+                 COMMAND cut -d. -f3 
+                 OUTPUT_VARIABLE T8CODE_VERSION_POINT 
+                 OUTPUT_STRIP_TRAILING_WHITESPACE )
+
+target_compile_definitions( T8 PUBLIC T8_PACKAGE_STRING="t8 ${T8CODE_VERSION}" )
+target_compile_definitions( T8 PUBLIC T8_VERSION="${T8CODE_VERSION}" )
+target_compile_definitions( T8 PUBLIC T8_VERSION_MAJOR=${T8CODE_VERSION_MAJOR} )
+target_compile_definitions( T8 PUBLIC T8_VERSION_MINOR=${T8CODE_VERSION_MINOR} )
+target_compile_definitions( T8 PUBLIC T8_VERSION_POINT=${T8CODE_VERSION_POINT} )
+
+
+target_include_directories( T8 PUBLIC ${CMAKE_CURRENT_LIST_DIR} )
+target_link_libraries( T8 PUBLIC P4EST::P4EST SC::SC )
+
+if ( T8CODE_ENABLE_MPI )
+    target_compile_definitions( T8 PUBLIC T8_ENABLE_MPI )
+    target_compile_definitions( T8 PUBLIC T8_ENABLE_MPIIO )
+    target_link_libraries( T8 PUBLIC MPI::MPI_C )
+endif()
+
+if( T8CODE_ENABLE_VTK )
+    target_compile_definitions( T8 PUBLIC T8_VTK_VERSION_USED="${VTK_MAJOR_VERSION}.${VTK_MINOR_VERSION}" )
+    target_compile_definitions( T8 PUBLIC T8_WITH_VTK=1 )
+    target_include_directories( T8 PUBLIC ${VTK_INCLUDE_DIRS} )
+    target_link_libraries( T8 PUBLIC ${VTK_LIBRARIES} )
+endif()
+
+target_sources( T8 PRIVATE 
+    t8.c 
+    t8_eclass.c 
+    t8_mesh.c 
+    t8_element.c 
+    t8_element_cxx.cxx 
+    t8_element_c_interface.cxx 
+    t8_refcount.c 
+    t8_cmesh/t8_cmesh.c 
+    t8_cmesh/t8_cmesh_cad.cxx 
+    t8_cmesh/t8_cmesh_cxx.cxx 
+    t8_cmesh/t8_cmesh_triangle.c 
+    t8_cmesh/t8_cmesh_vtk_writer.c 
+    t8_cmesh/t8_cmesh_stash.c 
+    t8_cmesh/t8_cmesh_vtk_reader.cxx 
+    t8_cmesh/t8_cmesh_save.c 
+    t8_cmesh/t8_cmesh_netcdf.c 
+    t8_cmesh/t8_cmesh_trees.c 
+    t8_cmesh/t8_cmesh_commit.c 
+    t8_cmesh/t8_cmesh_partition.c 
+    t8_cmesh/t8_cmesh_copy.c 
+    t8_data/t8_shmem.c 
+    t8_cmesh/t8_cmesh_geometry.cxx 
+    t8_cmesh/t8_cmesh_examples.c 
+    t8_cmesh/t8_cmesh_helpers.c 
+    t8_data/t8_containers.cxx 
+    t8_cmesh/t8_cmesh_offset.c 
+    t8_cmesh/t8_cmesh_readmshfile.cxx 
+    t8_forest/t8_forest.c 
+    t8_forest/t8_forest_adapt.cxx 
+    t8_geometry/t8_geometry.cxx 
+    t8_geometry/t8_geometry_helpers.c 
+    t8_geometry/t8_geometry_base.cxx 
+    t8_geometry/t8_geometry_with_vertices.cxx 
+    t8_geometry/t8_geometry_implementations/t8_geometry_analytic.cxx 
+    t8_geometry/t8_geometry_implementations/t8_geometry_cad.cxx 
+    t8_geometry/t8_geometry_implementations/t8_geometry_linear.cxx 
+    t8_geometry/t8_geometry_implementations/t8_geometry_linear_axis_aligned.cxx 
+    t8_geometry/t8_geometry_implementations/t8_geometry_zero.cxx 
+    t8_geometry/t8_geometry_implementations/t8_geometry_examples.cxx 
+    t8_forest/t8_forest_partition.cxx 
+    t8_forest/t8_forest_cxx.cxx 
+    t8_forest/t8_forest_private.c 
+    t8_forest/t8_forest_vtk.cxx 
+    t8_forest/t8_forest_ghost.cxx 
+    t8_forest/t8_forest_iterate.cxx 
+    t8_version.c 
+    t8_vtk.c 
+    t8_forest/t8_forest_balance.cxx 
+    t8_forest/t8_forest_netcdf.cxx 
+    t8_element_shape.c 
+    t8_netcdf.c 
+    t8_cmesh/t8_cmesh_testcases.c 
+    t8_vtk/t8_vtk_polydata.cxx 
+    t8_vtk/t8_vtk_unstructured.cxx 
+    t8_vtk/t8_vtk_parallel.cxx 
+    t8_vtk/t8_vtk_reader.cxx 
+    t8_schemes/t8_default/t8_default_cxx.cxx
+    t8_schemes/t8_default/t8_default_common/t8_default_common_cxx.cxx
+    t8_schemes/t8_default/t8_default_hex/t8_default_hex_cxx.cxx
+    t8_schemes/t8_default/t8_default_hex/t8_dhex_bits.c
+    t8_schemes/t8_default/t8_default_line/t8_default_line_cxx.cxx
+    t8_schemes/t8_default/t8_default_line/t8_dline_bits.c
+    t8_schemes/t8_default/t8_default_prism/t8_default_prism_cxx.cxx
+    t8_schemes/t8_default/t8_default_prism/t8_dprism_bits.c
+    t8_schemes/t8_default/t8_default_quad/t8_default_quad_cxx.cxx
+    t8_schemes/t8_default/t8_default_quad/t8_dquad_bits.c
+    t8_schemes/t8_default/t8_default_tet/t8_default_tet_cxx.cxx
+    t8_schemes/t8_default/t8_default_tet/t8_dtet_bits.c
+    t8_schemes/t8_default/t8_default_tet/t8_dtet_connectivity.c
+    t8_schemes/t8_default/t8_default_tri/t8_default_tri_cxx.cxx
+    t8_schemes/t8_default/t8_default_tri/t8_dtri_bits.c
+    t8_schemes/t8_default/t8_default_tri/t8_dtri_connectivity.c
+    t8_schemes/t8_default/t8_default_vertex/t8_default_vertex_cxx.cxx
+    t8_schemes/t8_default/t8_default_vertex/t8_dvertex_bits.c
+    t8_schemes/t8_default/t8_default_pyramid/t8_default_pyramid_cxx.cxx
+    t8_schemes/t8_default/t8_default_pyramid/t8_dpyramid_bits.c
+    t8_schemes/t8_default/t8_default_pyramid/t8_dpyramid_connectivity.c 
+)
+
+set( T8_PUBLIC_HEADERS 
+    t8.h 
+    t8_eclass.h 
+    t8_mesh.h 
+    t8_element_cxx.hxx 
+    t8_element.h
+    t8_element_c_interface.h 
+    t8_refcount.h 
+    t8_cmesh.h t8_cmesh_triangle.h 
+    t8_cmesh_tetgen.h t8_cmesh_readmshfile.h
+    t8_cmesh_vtk_writer.h
+    t8_cmesh_vtk_reader.hxx 
+    t8_vec.h 
+    t8_version.h 
+    t8_vtk.h 
+    t8_cmesh_netcdf.h 
+    t8_forest_netcdf.h 
+    t8_element_shape.h 
+    t8_netcdf.h
+    t8_cmesh/t8_cmesh_testcases.h
+    t8_cmesh/t8_cmesh_save.h
+    t8_cmesh/t8_cmesh_examples.h 
+    t8_cmesh/t8_cmesh_geometry.h 
+    t8_cmesh/t8_cmesh_helpers.h 
+    t8_cmesh/t8_cmesh_cad.hxx
+    t8_data/t8_shmem.h 
+    t8_data/t8_containers.h
+    t8_forest/t8_forest.h
+    t8_forest/t8_forest_general.h
+    t8_forest/t8_forest_geometrical.h
+    t8_forest/t8_forest_profiling.h
+    t8_forest/t8_forest_io.h
+    t8_forest/t8_forest_adapt.h 
+    t8_forest/t8_forest_vtk.h 
+    t8_forest/t8_forest_to_vtkUnstructured.hxx
+    t8_forest/t8_forest_iterate.h 
+    t8_forest/t8_forest_partition.h
+    t8_geometry/t8_geometry.h
+    t8_geometry/t8_geometry_base.hxx 
+    t8_geometry/t8_geometry_base.h 
+    t8_geometry/t8_geometry_with_vertices.hxx 
+    t8_geometry/t8_geometry_with_vertices.h 
+    t8_geometry/t8_geometry_helpers.h
+    t8_geometry/t8_geometry_implementations/t8_geometry_linear.h
+    t8_geometry/t8_geometry_implementations/t8_geometry_linear_axis_aligned.h
+    t8_geometry/t8_geometry_implementations/t8_geometry_analytic.hxx
+    t8_geometry/t8_geometry_implementations/t8_geometry_examples.h
+    t8_geometry/t8_geometry_implementations/t8_geometry_cad.h
+    t8_geometry/t8_geometry_implementations/t8_geometry_cad.hxx
+    t8_geometry/t8_geometry_implementations/t8_geometry_linear.hxx
+    t8_geometry/t8_geometry_implementations/t8_geometry_linear_axis_aligned.hxx
+    t8_geometry/t8_geometry_implementations/t8_geometry_examples.hxx
+    t8_geometry/t8_geometry_implementations/t8_geometry_zero.hxx 
+    t8_vtk/t8_vtk_reader.hxx 
+    t8_vtk/t8_vtk_types.h
+)
+
+install( FILES ${T8_PUBLIC_HEADERS} DESTINATION ${CMAKE_INSTALL_PREFIX}/include )
+install( TARGETS T8 DESTINATION ${CMAKE_INSTALL_PREFIX}/lib )

src/t8.h

@@ -30,7 +30,9 @@
 #define T8_H
 
 /* include config headers */
+#ifndef T8_CMAKE_BUILD
 #include <t8_config.h>
+#endif
 #include <sc_config.h>
 #if (defined(T8_ENABLE_MPI) && !defined(SC_ENABLE_MPI)) || (!defined(T8_ENABLE_MPI) && defined(SC_ENABLE_MPI))
 #error "MPI configured differently in t8code and libsc"

src/t8_version.h

@@ -47,7 +47,9 @@
 #define T8_VERSION_H
 
 #include <t8.h>
+#ifndef T8_CMAKE_BUILD
 #include <t8_config.h>
+#endif
 
 /* In order to convert a macro to a string, we
  * need to pass it through these two helper macros. */